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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2011
Commission file number 001-33334

PETROHAWK ENERGY CORPORATION
(Exact name of registrant as specified in its charter)


Delaware		86-0876964
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification Number)

1000 Louisiana, Suite 5600, Houston, Texas 77002
(Address of principal executive offices including ZIP code)

(832) 204-2700
(Registrant's telephone number)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of "large accelerated filer", "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act:


Large accelerated filer ý		Accelerated filer o		Non-accelerated filer o (Do not check if a smaller reporting company)		Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No ý

As of December 2, 2011 the Registrant had 100 shares of Common Stock, $.001 par value, outstanding, all of which were held by BHP Billiton Petroleum (North America) Inc., a wholly owned subsidiary of BHP Billiton Limited.

The registrant is a wholly owned subsidiary of BHP Billiton Limited and meets the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is therefore filing this Form with a reduced disclosure format as permitted by Instruction H(2).

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PART I. FINANCIAL INFORMATION
	ITEM 1.	Condensed consolidated financial statements (unaudited)	5
		Condensed consolidated statements of operations for the three and nine months ended September 30, 2011 and 2010 (Restated)	5
		Condensed consolidated balance sheets as of September 30, 2011 and December 31, 2010 (Restated)	6
		Condensed consolidated statements of cash flows for the nine months ended September 30, 2011 and 2010 (Restated)	7
		Notes to condensed consolidated financial statements	8
	ITEM 2.	Management's narrative analysis of results of operations	50
	ITEM 4.	Controls and procedures	60
PART II. OTHER INFORMATION
	ITEM 1.	Legal proceedings	61
	ITEM 1A.	Risk factors	62
	ITEM 6.	Exhibits	65

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Special note regarding forward-looking statements

This Quarterly Report on Form 10-Q contains, and we may from time to time otherwise make in other public filings, press releases and presentations, forward-looking statements within the meaning of the federal securities laws. All statements, other than statements of historical facts, concerning, among other things, planned capital expenditures, potential increases in oil and natural gas production, the number and location of wells to be drilled in the future, future cash flows and borrowings, pursuit of potential acquisition opportunities, our financial position, business strategy and other plans and objectives for future operations, are forward-looking statements. These forward-looking statements are identified by their use of terms and phrases such as "may," "expect," "estimate," "project," "plan," "believe," "intend," "achievable," "anticipate," "will," "continue," "potential," "should," "could" and similar terms and phrases. Although we believe that the expectations reflected in these forward-looking statements are reasonable, they do involve certain assumptions, risks and uncertainties. Actual results could differ materially from those anticipated in these forward-looking statements. One should consider carefully the statements under the "Risk Factors" section of this report and in our previously filed Annual Report on Form 10-K for the year ended December 31, 2010 and the other disclosures contained herein and therein, as well as the disclosures contained in Amendment No. 1 to the Annual Report on Form 10-K for the period ended December 31, 2010, which describe factors that could cause our actual results to differ from those anticipated in the forward-looking statements, including, but not limited to, the following factors:

•: our ability to successfully integrate our business with affiliates of BHP Billiton Limited;
•: our ability to retain key members of senior management and key technical employees;
•: volatility in commodity prices for oil and natural gas;
•: the possibility that our industry may be subject to future regulatory or legislative actions (including any additional taxes and changes in environmental regulation);
•: the presence or recoverability of estimated oil and natural gas reserves and the actual future production rates and associated costs;
•: the potential for production decline rates for our wells to be greater than we expect;
•: our ability to replace oil and natural gas reserves;
•: environmental risks;
•: drilling and operating risks;
•: exploration and development risks;
•: competition, including competition for acreage in resource play areas;
•: management's ability to execute our plans to meet our goals;
•: the cost and availability of goods and services, such as drilling rigs, fracture stimulation services and tubulars;
•: access to and availability of water and other treatment materials to carry out planned fracture stimulations in our resource plays;
•: access to adequate gathering systems and transportation take-away capacity, necessary to fully execute our capital program;
•: our ability to secure firm transportation and other marketing outlets for the natural gas, natural gas liquids and crude oil and condensate we produce and to sell these products at market prices;

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•: general economic conditions, whether internationally, nationally or in the regional and local market areas in which we do business, may be less favorable than expected, including the possibility that the economic conditions in the United States will worsen and that capital markets are disrupted, which could adversely affect demand for oil and natural gas and make it difficult to access financial markets;
•: social unrest, political instability, armed conflict, or acts of terrorism or sabotage in oil and natural gas producing regions, such as the Middle East, or our markets; and
•: other economic, competitive, governmental, legislative, regulatory, geopolitical and technological factors that may negatively impact our business, operations or pricing.

All forward-looking statements are expressly qualified in their entirety by the cautionary statements in this paragraph and elsewhere in this document. Other than as required under the securities laws, we do not assume a duty to update these forward-looking statements, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

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PART I. FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements (Unaudited)

PETROHAWK ENERGY CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

(In thousands)

				Three Months Ended September 30,						Nine Months Ended September 30,

				2011			2010 Restated(1)			2011			2010 Restated(1)
Operating revenues:
	Oil and natural gas			$	491,288		$	280,328		$	1,285,225		$	820,753
	Marketing				5,916			122,981			295,946			360,438
	Midstream				5,019			4,860			12,167			16,429

		Total operating revenues			502,223			408,169			1,593,338			1,197,620

Operating expenses:
	Marketing				6,319			139,053			322,266			392,984
	Production:
		Lease operating			17,333			15,794			43,670			49,573
		Workover and other			2,863			2,758			12,047			6,707
	Taxes other than income				18,563			(2,995	)		48,142			15,025
	Gathering, transportation and other				56,223			24,047			99,736			76,546
	General and administrative				132,982			40,974			224,463			116,503
	Depletion, depreciation and amortization				231,726			109,987			590,507			316,093

			Total operating expenses		466,009			329,618			1,340,831			973,431

Income from operations					36,214			78,551			252,507			224,189
Other income (expenses):
	Net gain on derivative contracts				199,440			147,892			232,040			345,970
	Interest expense and other				(108,658	)		(125,858	)		(283,297	)		(254,945	)

			Total other income (expenses)		90,782			22,034			(51,257	)		91,025

Income from continuing operations before income taxes					126,996			100,585			201,250			315,214
Income tax provision					(45,350	)		(39,400	)		(73,571	)		(122,841	)

Income from continuing operations, net of income taxes					81,646			61,185			127,679			192,373
Loss from discontinued operations, net of income taxes					(42	)		(828	)		(3,201	)		(1,493	)

Net income				$	81,604		$	60,357		$	124,478		$	190,880

(1): See further discussion at Note 13, "Restatement."

The accompanying notes are an integral part of these unaudited condensed consolidated
financial statements.

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PETROHAWK ENERGY CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

(In thousands, except share amounts)

				September 30, 2011			December 31, 2010 Restated(1)

Current assets:
	Cash			$	100,925		$	1,591
	Accounts receivable				398,052			356,597
	Receivables from derivative contracts				250,663			217,018
	Prepaids and other				49,536			62,831

			Total current assets		799,176			638,037

Oil and natural gas properties (full cost method):
	Evaluated				9,819,839			7,520,446
	Unevaluated				2,458,854			2,387,037

			Gross oil and natural gas properties		12,278,693			9,907,483
	Less—accumulated depletion				(5,339,688	)		(4,774,579	)

			Net oil and natural gas properties		6,939,005			5,132,904

Other operating property and equipment:
	Gas gathering systems and equipment				804,207			593,388
	Other operating assets				94,893			55,315

			Gross other operating property and equipment		899,100			648,703
	Less—accumulated depreciation				(50,151	)		(27,635	)

			Net other operating property and equipment		848,949			621,068

Other noncurrent assets:
	Goodwill				932,802			932,802
	Other intangible assets, net of amortization				81,053			89,342
	Debt issuance costs, net of amortization				62,133			45,941
	Deferred income taxes				281,622			316,546
	Receivables from derivative contracts				46,247			41,721
	Assets held for sale				—			74,448
	Other				11,124			6,944

Total assets				$	10,002,111		$	7,899,753

Current liabilities:
	Accounts payable and accrued liabilities			$	886,310		$	787,238
	Deferred income taxes				51,898			45,815
	Liabilities from derivative contracts				398			5,820
	Payable to KinderHawk Field Services LLC				—			976
	Payable on financing arrangements				16,809			7,052
	Long-term debt				27,285			14,790

			Total current liabilities		982,700			861,691

Long-term debt					3,250,842			2,612,852
Other noncurrent liabilities:
	Liabilities from derivative contracts				—			13,575
	Asset retirement obligations				44,075			31,741
	Payable on financing arrangements				1,757,864			933,811
	Other				649			544
	Commitments and contingencies (Note 7)
Stockholders' equity:
		Common stock: 100 and 500,000,000 shares of $.001 par value authorized; 100 and 302,489,501 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively			—			302
		Additional paid-in capital			5,027,875			4,631,609
		Accumulated deficit			(1,061,894	)		(1,186,372	)

			Total stockholders' equity		3,965,981			3,445,539

Total liabilities and stockholders' equity				$	10,002,111		$	7,899,753

(1): See further discussion at Note 13, "Restatement."

The accompanying notes are an integral part of these unaudited condensed consolidated
financial statements.

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PETROHAWK ENERGY CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

(In thousands)

		Nine Months Ended September 30,

		2011			2010 Restated(1)
Cash flows from operating activities:
Net income		$	124,478		$	190,880
Adjustments to reconcile net income to net cash provided by operating activities:
	Depletion, depreciation and amortization		589,160			319,919
	Income tax provision		71,593			121,886
	Loss on sale		3,950			—
	Stock-based compensation		53,203			17,038
	Net unrealized gain on derivative contracts		(50,580	)		(190,228	)
	Other operating		29,140			75,098
Change in assets and liabilities:
	Accounts receivable		(51,272	)		(136,655	)
	Receivable from KinderHawk Field Services LLC		—			(780	)
	Prepaids and other		13,295			(28,530	)
	Accounts payable and accrued liabilities		(12,409	)		(22,967	)
	Payable to KinderHawk Field Services LLC		(976	)		—
	Other		(3,879	)		16,752

Net cash provided by operating activities			765,703			362,413

Cash flows from investing activities:
	Oil and natural gas capital expenditures		(2,353,101	)		(1,731,707	)
	Proceeds received from sale of oil and natural gas properties		86,438			613,317
	Proceeds received from sale of Fayetteville gas gathering systems		76,898			—
	Marketable securities purchased		(896,006	)		(1,091,005	)
	Marketable securities redeemed		896,006			1,091,005
	Increase in restricted cash		(295,748	)		(198,209	)
	Decrease in restricted cash		295,748			368,991
	Other operating property and equipment capital expenditures		(236,570	)		(223,111	)

Net cash used in investing activities			(2,426,335	)		(1,170,719	)

Cash flows from financing activities:
	Proceeds from exercise of stock options		5,426			1,821
	Contribution from parent		628,375			—
	Restricted stock awards settled		(85,904	)		—
	Stock option awards and stock option appreciation rights settled		(224,216	)		—
	Proceeds from borrowings		4,386,500			2,184,000
	Repayment of borrowings		(3,752,157	)		(2,274,888	)
	Increase in payable on financing arrangements		836,355			921,408
	Decrease in payable on financing arrangements		(4,008	)		—
	Debt issuance costs		(25,982	)		(17,706	)
	Other		(4,423	)		(3,688	)

Net cash provided by financing activities			1,759,966			810,947

Net increase in cash			99,334			2,641
Cash at beginning of period			1,591			1,511

Cash at end of period		$	100,925		$	4,152

(1): See further discussion at Note 13, "Restatement."

The accompanying notes are an integral part of these unaudited condensed consolidated
financial statements.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

1. FINANCIAL STATEMENT PRESENTATION

Petrohawk Energy Corporation (Petrohawk or the Company) is engaged in the exploration, development and production of predominately natural gas properties located in the United States. As further discussed under the heading "Merger" below, on August 25, 2011, BHP Billiton Limited, a corporation organized under the laws of Victoria, Australia (BHP Billiton Limited), acquired 100% of the outstanding shares of Petrohawk through the merger of a wholly owned subsidiary of BHP Billiton Petroleum (North America) Inc., a Delaware corporation (which is a wholly owned subsidiary of BHP Billiton Limited), with and into Petrohawk, with Petrohawk continuing as the surviving entity. Petrohawk remains an indirect, wholly owned subsidiary of BHP Billiton Limited. The Company operates in two segments, oil and natural gas production and midstream operations. The unaudited condensed consolidated financial statements include the accounts of all majority-owned, controlled subsidiaries of the Company. All intercompany accounts and transactions have been eliminated. Certain prior year amounts have been reclassified to conform to the current year presentation. These unaudited condensed consolidated financial statements reflect, in the opinion of the Company's management, all adjustments, consisting only of normal and recurring adjustments, necessary to present fairly the financial position as of, and the results of operations for, the periods presented. During interim periods, Petrohawk follows the accounting policies disclosed in its 2010 Annual Report on Form 10-K, as amended, filed with the United States Securities and Exchange Commission (SEC). Please refer to the footnotes in the 2010 Annual Report on Form 10-K, as amended, when reviewing interim financial results.

Merger

On July 14, 2011, the Company entered into an agreement and plan of merger (Merger Agreement) with BHP Billiton Limited (Guarantor), BHP Billiton Petroleum (North America) Inc., a Delaware corporation (Parent) and a wholly owned subsidiary of Guarantor, and North America Holdings II Inc., a Delaware corporation (Purchaser) and a wholly owned subsidiary of Parent, pursuant to which Purchaser commenced on July 25, 2011, an offer (Offer) to acquire all of the outstanding shares of the Company's common stock, par value $0.001 per share (Shares), for $38.75 per share, net to the seller in cash (the Offer Price), without interest, less any applicable withholding taxes.

On August 21, 2011, BHP Billiton Limited announced the completion of the Offer. The Offer expired at 12:00 midnight, New York City time, Friday, August 19, 2011 (the Expiration Date). According to Computershare Trust Company, N.A., the depositary (Depositary) for the Offer, as of the Expiration Date, approximately 293.9 million Shares had been validly tendered and not withdrawn pursuant to the Offer, including approximately 36.0 million Shares tendered by guaranteed delivery, which tendered shares represent approximately 97.4% of the total outstanding Shares. Purchaser accepted for payment all Shares validly tendered and not validly withdrawn pursuant to the Offer on or prior to the Expiration Date, and payment for such Shares was made in accordance with the terms of the Offer. Pursuant to the Merger Agreement, on August 25, 2011, Purchaser merged with and into Petrohawk, with Petrohawk continuing as the surviving corporation in the merger and as a wholly owned subsidiary of Parent (the BHP Merger).

At Parent's request and direction and as an inducement to Parent's willingness to enter into the Merger Agreement, the Company entered into retention agreements (Retention Agreements) with certain of the Company's executive officers contemporaneously with the execution of the Merger Agreement. The Retention Agreements became effective upon the acceptance for payment of Shares validly tendered and not withdrawn pursuant to the terms and conditions of the Offer (Acceptance

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

1. FINANCIAL STATEMENT PRESENTATION (Continued)

Time). The Retention Agreements continue the employment of each executive with the Company for a period of time following the Acceptance Time. For those executives who had employment agreements with the Company at such time, such employment agreements were superseded and replaced in their entirety by the Retention Agreements as of the effective time of such Retention Agreement. Floyd C. Wilson also entered into a consulting agreement (Consulting Agreement) with the Company beginning after the retention date specified in Mr. Wilson's Retention Agreement and ending six months thereafter under which Mr. Wilson will provide services to the Company and pursuant to which he will be entitled to separately specified compensation. Additional information regarding the Merger Agreement, Retention Agreements and Consulting Agreement is set forth in the Company's Form 8-K filed on July 20, 2011.

The company incurred approximately $89.3 million in charges related to the BHP Merger during the third quarter 2011. These costs are reported in "General and administrative" on the unaudited condensed consolidated statements of operations.

Use of Estimates

The preparation of the Company's unaudited condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires the Company's management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities, if any, at the date of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the respective reporting periods. The Company bases its estimates and judgments on historical experience and on various other assumptions and information that are believed to be reasonable under the circumstances. Estimates and assumptions about future events and their effects cannot be perceived with certainty and, accordingly, these estimates may change as new events occur, as more experience is acquired, as additional information is obtained and as the Company's operating environment changes. Actual results may differ from the estimates and assumptions used in the preparation of the Company's unaudited condensed consolidated financial statements.

Interim period results are not necessarily indicative of results of operations or cash flows for the full year and accordingly, certain information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States has been condensed or omitted. The Company has evaluated events or transactions through the date of issuance of these unaudited condensed consolidated financial statements.

Marketing Revenue and Expense

Historically, for Louisiana and Arkansas production, a subsidiary of the Company purchased and sold the Company's own and third party natural gas produced from wells which the Company and third parties operated. The revenues and expenses related to these marketing activities were reported on a gross basis as part of operating revenues and operating expenses in historical periods. Marketing revenues were recorded at the time natural gas was physically delivered to third parties at a fixed or index price. Marketing expenses attributable to gas purchases were recorded as the subsidiary of the Company took physical title to natural gas and transported the purchased volumes to the point of sale. Effective July 1, 2011, the Company's marketing subsidiary ceased its marketing operations. Therefore, the Company will no longer reflect these activities on a gross basis on the unaudited condensed

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

1. FINANCIAL STATEMENT PRESENTATION (Continued)

consolidated statements of operations. As a result, certain items previously recorded to "Marketing revenues" will no longer be reported while others will now be recorded to "Oil and natural gas revenues" on the unaudited condensed consolidated statements of operations. In addition, certain charges previously reported in "Marketing expenses" will no longer be recorded while others will now be recorded to "Gathering, transportation and other" on the unaudited condensed consolidated statements of operations.

Midstream Revenues

Revenues from the Company's midstream operations are derived from providing gathering and treating services for the Company and other owners in wells which the Company and third parties operate. Revenues are recognized when services are provided at a fixed or determinable price, collectability is reasonably assured and evidenced by a contract. The midstream operations segment does not take title to the natural gas for which services are provided, with the exception of imbalances that are monthly cash settled. The imbalances are recorded using published natural gas market prices.

The contribution of the Company's Haynesville Shale gas gathering and treating business to KinderHawk Field Services LLC (KinderHawk) on May 21, 2010 for a 50% membership interest and approximately $917 million in cash is accounted for in accordance with the Financial Accounting Standards Board's (FASB) Accounting Standards Codification (ASC) Subtopic 360-20, Property, Plant and Equipment—Real Estate Sales (ASC 360-20). Under the financing method for a failed sale of in substance real estate, the Company records KinderHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, on the unaudited condensed consolidated statements of operations in "Midstream revenues." On July 1, 2011, following the transfer of the Company's remaining 50% membership interest in KinderHawk to KM Gathering LLC (KM Gathering), KinderHawk's revenues are no longer recorded in the Company's unaudited condensed consolidated statements of operations in "Midstream revenues."

On July 1, 2011, the Company transferred a 25% interest in EagleHawk Field Services LLC (EagleHawk) to KM Eagle Gathering LLC (Eagle Gathering). The EagleHawk transaction is accounted for in accordance with ASC 360-20. Under the financing method for a failed sale of in substance real estate, the Company records EagleHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, on the unaudited condensed consolidated statements of operations in "Midstream revenues."

See Note 2, "Acquisitions and Divestitures" for more details regarding the KinderHawk and EagleHawk joint venture arrangements and for discussion of the accounting treatment related to the arrangements.

Gas Gathering Systems and Equipment and Other Operating Assets

Gas gathering systems and equipment are recorded at cost. Depreciation is calculated using the straight-line method over a 30-year estimated useful life. Upon disposition, the cost and accumulated depreciation are removed and any gains or losses are reflected in current operations. Maintenance and repair costs are charged to operating expense as incurred. Material expenditures which increase the life of an asset are capitalized and depreciated over the estimated remaining useful life of the asset. The Company capitalized $0.1 million and $1.8 million of interest for the three and nine months ended September 30, 2011, respectively, and $0.4 million and $2.9 million of interest for the three and nine

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

1. FINANCIAL STATEMENT PRESENTATION (Continued)

months ended September 30, 2010, respectively, related to the construction of the Company's gas gathering systems and equipment.

The contribution of the Company's Haynesville Shale gas gathering and treating business to KinderHawk on May 21, 2010 for a 50% membership interest and approximately $917 million in cash is accounted for in accordance with the ASC 360-20. Under the financing method, the historical cost of the Haynesville Shale gas gathering system contributed to KinderHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. Contributions to KinderHawk from the Company and the joint venture partner are recorded as increases in "Gas gathering systems and equipment" on the unaudited condensed consolidated balance sheets. On July 1, 2011, the Company transferred its remaining 50% membership interest in KinderHawk to KM Gathering. In accordance with ASC 360-20, the historical cost of the Haynesville Shale gas gathering system is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheet and depreciated over the useful life of the assets.

The Company's transfer of a 25% interest in EagleHawk on July 1, 2011, to Eagle Gathering is accounted for in accordance with ASC 360-20. Under the financing method, the historical cost of the Eagle Ford Shale gas gathering systems contributed to EagleHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. Contributions to EagleHawk from the Company and the joint venture partner are recorded as increases in "Gas gathering systems and equipment" on the unaudited condensed consolidated balance sheets.

Gas gathering systems and equipment as of September 30, 2011 and December 31, 2010 consisted of the following:

		September 30, 2011(1)(2)			December 31, 2010(1)(3)

		(In thousands)
Gas gathering systems and equipment		$	804,207		$	748,112
Less—accumulated depreciation			(26,867	)		(22,170	)

	Net gas gathering systems and equipment	$	777,340		$	725,942

(1): Under the financing method, the historical cost of the Haynesville Shale gas gathering system contributed to KinderHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. As of September 30, 2011 and December 31, 2010, the table above includes approximately $423.7 million and $434.6 million, respectively, attributed to the net carrying value of the assets contributed to KinderHawk.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

1. FINANCIAL STATEMENT PRESENTATION (Continued)

(2): Under the financing method, the historical cost of the Eagle Ford Shale gas gathering systems contributed to EagleHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. As of September 30, 2011, the table above includes approximately $341.6 million attributed to the net carrying value of the assets contributed to EagleHawk.
(3): Includes gas gathering systems and equipment of approximately $155 million and related accumulated depreciation of approximately $11 million associated with the Company's Fayetteville Shale midstream assets, which were classified as "Assets held for sale" in the unaudited condensed consolidated balance sheets at December 31, 2010. "Assets held for sale" were recorded at the lesser of the carrying amount or the fair value less costs to sell, which resulted in a write down of approximately $69.7 million that was recorded in the year ended December 31, 2010. "Assets held for sale" were approximately $74 million as of December 31, 2010. The Company divested its Fayetteville Shale midstream operations on January 7, 2011.

Other operating property and equipment are recorded at cost. Depreciation is calculated using the straight-line method. Upon disposition, the cost and accumulated depreciation are removed and any gains or losses are reflected in current operations. Maintenance and repair costs are charged to operating expense as incurred. Material expenditures which increase the life of an asset are capitalized and depreciated over the estimated remaining useful life of the asset.

The Company reviews its gas gathering systems and equipment and other operating assets in accordance with ASC 360, Property, Plant, and Equipment (ASC 360). ASC 360 requires the Company to evaluate gas gathering systems and equipment and other operating assets as events occur or circumstances change that would more likely than not reduce the fair value below the carrying amount. If the carrying amount is not recoverable from its undiscounted cash flows, then the Company would recognize an impairment loss for the difference between the carrying amount and the current fair value. Further, the Company evaluates the remaining useful lives of its gas gathering systems and equipment and other operating assets at each reporting period to determine whether events and circumstances warrant a revision to the remaining depreciation periods.

Payable on Financing Arrangements

The contribution of the Company's Haynesville Shale gas gathering and treating business to KinderHawk on May 21, 2010 for a 50% membership interest and approximately $917 million in cash is accounted for in accordance with ASC 360-20. Due to the gathering agreement entered into with the formation of KinderHawk, which constitutes extended continuing involvement under ASC 360-20, it has been determined that the contribution of the Company's Haynesville Shale gathering and treating system to form KinderHawk is accounted for as a failed sale of in substance real estate. See Note 2, "Acquisitions and Divestitures" for more details regarding the KinderHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. Under the financing method for a failed sale of in substance real estate, on May 21, 2010, the Company recorded a financing obligation on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $917 million. Reductions to the obligation and the non cash interest on the financing obligation are tied to the gathering and treating services, as the Company

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delivers natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to the joint venture partner, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. On July 1, 2011, the Company transferred its remaining 50% membership interest in KinderHawk to KM Gathering. See further discussion in Note 2, "Acquisitions and Divestitures." As a result of the transfer on July 1, 2011, the Company recorded an increase in its financing obligation associated with KinderHawk of approximately $743.0 million.

The Company's transfer of a 25% interest in EagleHawk on July 1, 2011 to Eagle Gathering is accounted for in accordance with ASC 360-20. Due to the gathering agreements which constitute extended continuing involvement under ASC 360-20, it has been determined that the transfer of the Company's Eagle Ford Shale gathering and treating systems to EagleHawk is accounted for as a failed sale of in substance real estate. See Note 2, "Acquisitions and Divestitures" for more details regarding the EagleHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. Under the financing method for a failed sale of in substance real estate, on July 1, 2011, the Company recorded a financing obligation on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $93 million. Reductions to the obligation and the non cash interest on the financing obligation are tied to the gathering and treating services, as the Company delivers natural gas through the Eagle Ford Shale gathering and treating systems. Interest and principal are determined based upon the allocable income to the joint venture partner, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. The balance of the Company's financing obligation as of September 30, 2011 and December 31, 2010, was approximately $1.8 billion and $940.9 million, respectively, of which approximately $16.8 million and $7.1 million was classified as current for the respective periods.

Goodwill

Goodwill represents the excess of the purchase price over the estimated fair value of the assets acquired net of the fair value of liabilities assumed in an acquisition. ASC 350, Intangibles—Goodwill and Other (ASC 350) requires that intangible assets with indefinite lives, including goodwill, be evaluated on an annual basis for impairment or more frequently if events occur or circumstances change that could potentially result in impairment. The goodwill impairment test requires the allocation of goodwill and all other assets and liabilities to reporting units. The Company has determined that it has two reporting units: oil and natural gas production and midstream operations. All of the Company's goodwill has been allocated to its oil and natural gas production reporting unit as all of its historical goodwill relates to its acquisitions of oil and natural gas properties. The Company performs its goodwill test annually during the third quarter or more often if circumstances require. The Company completed its annual goodwill impairment test during the third quarter of 2011 and based on this review, no goodwill impairment was deemed necessary.

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Other Intangible Assets

The Company treats the costs associated with acquired transportation contracts as other intangible assets. The initial amount recorded represents the fair value of the contract at the time of acquisition, which is amortized using the straight-line method over the life of the contract. Any unamortized balance of the Company's other intangible assets is subject to impairment testing pursuant to the Impairment or Disposal of Long-Lived Assets Subsections of ASC Subtopic 360-10. The Company reviews its intangible assets for potential impairment whenever events or changes in circumstances indicate that an other-than-temporary decline in the value of the investment has occurred.

Amortization expense was $2.8 million and $8.3 million for the three and nine months ended September 30, 2011 and 2010, respectively. Historically, the Company allocated the amortization to operating expenses between "Marketing" and "Gathering, transportation and other" on the unaudited condensed consolidated statements of operations based on the usage of the contract. Effective July 1, 2011 and in conjunction with the elimination of the Company's marketing activities, this amortization will be included in "Gathering, transportation and other" only. The estimated amortization expense will be approximately $11.1 million per year for the remainder of the contract through 2019.

Other intangible assets subject to amortization at September 30, 2011 and December 31, 2010 are as follows:

		September 30, 2011			December 31, 2010

		(In thousands)
Transportation contracts		$	105,108		$	105,108
Less—accumulated amortization			(24,055	)		(15,766	)

	Net transportation contracts	$	81,053		$	89,342

Assets Held for Sale

As discussed in Note 2, "Acquisitions and Divestitures," the Company divested its Fayetteville Shale midstream operations on January 7, 2011 for approximately $75 million in cash, before customary closing adjustments. The Company's assets related to the Fayetteville Shale midstream operations were presented separately as "Assets held for sale" in the unaudited condensed consolidated balance sheet at December 31, 2010, in accordance with ASC 360. Assets held for sale were recorded at the lesser of the carrying amount or the fair value less costs to sell, which resulted in a write down of the carrying amount of approximately $69.7 million that was recorded in the year ended December 31, 2010.

Discontinued Operations

Certain amounts related to the Company's Fayetteville Shale midstream operations and other operating property and equipment have been reclassified to discontinued operations for all periods presented. Unless otherwise noted, information contained in the notes to the unaudited condensed consolidated financial statements relates to the Company's continuing operations. See Note 12, "Discontinued Operations," for further discussion of the presentation of the Company's Fayetteville Shale midstream and other operating assets as discontinued operations.

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Recently Issued Accounting Pronouncements

In December 2010, the FASB issued Accounting Standards Update (ASU) No. 2010-28, When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (ASU 2010-28). This codification update modifies Step 1 of the goodwill impairment test for reporting units with zero or negative carrying amounts and requires reporting units with such carrying amounts to perform Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists. ASU 2010-28 is effective for fiscal years and interim periods beginning after December 15, 2010 and early adoption is not permitted. The Company adopted the provisions of this update in the first quarter of 2011 and applied the provisions of ASU 2010-28 when the Company's annual goodwill test was performed in the third quarter of 2011. The application of ASU 2010-28 did not have a material impact on the Company's operating results, financial position, cash flows or disclosures.

In December 2010, the FASB issued ASU No. 2010-29, Disclosure of Supplementary Pro Forma Information for Business Combinations (ASU 2010-29). ASU 2010-29 requires a public entity who discloses comparative pro forma information for business combinations that occurred in the current reporting period to disclose revenue and earnings of the combined entity as though the business combination(s) occurred as of the beginning of the comparable prior annual period only. This update also expands the supplemental pro forma disclosures required to include a description of the nature and amount of material, nonrecurring pro forma adjustments directly attributable to the business combination included in the reported pro forma revenue and earnings. ASU 2010-29 is effective for business combinations for which the acquisition date is on or after the beginning of the first annual reporting period beginning on or after December 15, 2010 and early adoption is permitted. The Company will apply the provisions of this update for any business combinations that occur after January 1, 2011.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs (ASU 2011-04). The amendments in ASU 2011-04 are the result of the FASB's and the International Accounting Standards Board's (IASB) work to develop common requirements for measuring fair value and for disclosing information about fair value measurements in accordance with generally accepted accounting principles (GAAP) in the United States and the International Financial Reporting Standards (IFRS). ASU 2011-04 explains how to measure fair value and changes the wording used to describe many of the fair value requirements in GAAP, but does not require additional fair value measurements. The amendments in this update are to be applied prospectively to interim and annual reporting periods beginning after December 15, 2011. The Company is currently assessing the impact that the adoption of ASU 2011-04 will have on its operating results, financial position, cash flows and disclosures.

In July 2011, the FASB issued ASU No. 2011-06, Fees Paid to the Federal Government by Health Insurers (ASU 2011-06). This amendment discusses how health insurers should recognize and classify in their income statements the fees mandated by the Health Care and Education Reconciliation Act (the Acts). The Acts impose an annual fee upon health insurers for each calendar year on or after January 1, 2014. The annual fee imposed on the health insurance industry will be allocated to individual entities providing health insurance to employees based on a ratio, as provided for in the Acts. The health insurer's portion of the fee becomes payable to the United States Treasury once an entity provides health insurance for any United States health risk for each calendar year. ASU 2011-06

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specifies that the liability for the entity's fee should be estimated and recorded in full once the entity has provided qualifying health insurance in the calendar year in which the fee is payable to the government. A corresponding deferred cost should be recorded and amortized on a straight line basis (unless a better amortization method is available) over the calendar year that the fee is payable. The amendments in this update are effective for calendar years beginning after December 15, 2013, once the fee is instituted. The Company is currently assessing the impact that the adoption of ASU 2011-06 will have on its operating results, financial position, cash flows and disclosures.

In September 2011, the FASB issued ASU No. 2011-08, Testing for Goodwill Impairment (ASU 2011-08) to simplify how companies test goodwill for impairment. ASU 2011-08 simplifies testing for goodwill impairments by allowing entities to first assess qualitative factors to determine whether the facts or circumstances lead to the conclusion that it is more likely than not that the fair value of a reporting unit is less than the carrying amount. If the entity concludes that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then the entity does not have to perform the two-step impairment test. However, if that same conclusion is not reached, the company is required to perform the first step of the two-step impairment test. In this step, the fair value of the reporting unit is calculated and compared to the carrying amount of the reporting unit. If the carrying amount exceeds the fair value, then the entity must perform the second step of the impairment test to measure the amount of the impairment loss, if any. ASU 2011-08 allows a company to bypass the qualitative assessment and proceed directly with performing the two-step goodwill impairment test. ASU 2011-08 is effective for annual and interim goodwill impairment tests for fiscal years beginning after December 15, 2011 and early adoption is permitted. The Company adopted the provisions of ASU 2011-08 in its goodwill impairment test conducted in the third quarter of 2011. The Company opted to bypass the qualitative assessment and proceeded with the two-step goodwill impairment test. See further discussion above under the heading "Goodwill".

2. ACQUISITIONS AND DIVESTITURES

Divestitures

Midstream Transactions

On July 1, 2011, the Company closed previously announced transactions with KM Gathering and Eagle Gathering, each of which is an affiliate of Kinder Morgan Energy Partners, L.P., a publicly traded master limited partnership (Kinder Morgan), in which Hawk Field Services LLC (Hawk Field Services) transferred (i) its remaining 50% membership interest in KinderHawk to KM Gathering and (ii) a 25% interest in EagleHawk to Eagle Gathering, in exchange for aggregate cash consideration of approximately $836 million. In conjunction with the closing of the transactions, the balance of the Company's capital commitment to KinderHawk, approximately $41.4 million as of July 1, 2011, was relieved. The Company's commitment to deliver certain minimum annual quantities of natural gas through the Haynesville gathering system through May 2015 was not relieved in the transfer. The effective date of the transactions is July 1, 2011. See "Hawk Field Services, LLC Joint Venture" below for more details regarding the initial joint venture arrangement between Hawk Field Services and Kinder Morgan and for discussion of the accounting treatment for both KinderHawk transactions.

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2. ACQUISITIONS AND DIVESTITURES (Continued)

EagleHawk engages in the natural gas midstream business in the Eagle Ford Shale in South Texas. EagleHawk holds the Company's gathering and treating assets and business serving the Company's Hawkville and Black Hawk fields in the Eagle Ford Shale. EagleHawk has agreements with the Company covering gathering and treating of natural gas and transportation of condensate and pursuant to which the Company dedicates its production from its Eagle Ford Shale leases. Hawk Field Services manages EagleHawk's operations.

The EagleHawk joint venture is accounted for as a failed sale of in substance real estate under the provisions of ASC 360-20. ASC 360-20 establishes standards for recognition of profit on all real estate sales transactions other than retail land sales, without regard to the nature of the seller's business. In making the determination of whether a transaction qualifies, in substance, as a sale of real estate, the nature of the entire real estate being sold is considered, including the land plus the property improvements and the integral equipment. The Eagle Ford Shale gathering and treating systems, consist of right of ways, pipelines and processing facilities. Due to the gathering agreements which constitute extended continuing involvement under ASC 360-20, it has been determined that the transfer of the Company's Eagle Ford Shale gathering and treating systems to EagleHawk should be accounted for as a failed sale of in substance real estate.

As a result of the failed sale the Company accounts for the continued operations of the gas gathering systems and reflects a financing obligation, representing the proceeds received, under the financing method of real estate accounting. Under the financing method, the historical cost of the Eagle Ford Shale gas gathering systems transferred to EagleHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $93 million. Reductions to the obligation and non cash interest on the financing obligation are tied to the gathering and treating services, as the Company delivers its production through the Eagle Ford Shale gathering and treating systems. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. Additionally the Company records EagleHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, and expenses on the unaudited condensed consolidated statements of operations in "Midstream revenues," "Taxes other than income," "Gathering, transportation and other," "General and administrative," "Interest expense and other" and "Depletion, depreciation and amortization."

Fayetteville Shale

On December 22, 2010, the Company completed the sale of its interest in natural gas properties and related other operating property and equipment in the Fayetteville Shale for $575 million in cash, before customary closing adjustments. Proceeds from the sale of the interest in natural gas properties were recorded as a reduction to the carrying value of the Company's full cost pool with no gain or loss recorded. In conjunction with the sale of the related other operating property and equipment, the Company recorded a loss of approximately $0.5 million in the year ended December 31, 2010. On January 7, 2011, the Company completed the sale of its midstream assets in the Fayetteville Shale for

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approximately $75 million in cash, before customary closing adjustments. As of December 31, 2010, the Fayetteville Shale midstream assets were classified as "Assets held for sale" on the Company's unaudited condensed consolidated balance sheet. "Assets held for sale" were recorded at the lesser of the carrying amount or the fair value less costs to sell, which resulted in a write down of the carrying amount of approximately $69.7 million in the year ended December 31, 2010. Both transactions had an effective date of October 1, 2010.

Mid-Continent Properties

On September 29, 2010, the Company completed the sale of its interest in certain oil and natural gas properties in Texas, Oklahoma and Arkansas for $123 million in cash, before customary closing adjustments. Proceeds from the sale were recorded as a reduction to the carrying value of the Company's full cost pool with no gain or loss recorded. The transaction had an effective date of July 1, 2010.

Hawk Field Services, LLC Joint Venture

On May 21, 2010, Hawk Field Services and Kinder Morgan formed a joint venture pursuant to a Formation and Contribution Agreement (Contribution Agreement). The joint venture entity, KinderHawk, was engaged in the natural gas midstream business in Northwest Louisiana, focused on the Haynesville and Lower Bossier Shales. Pursuant to the Contribution Agreement, Hawk Field Services contributed to KinderHawk its Haynesville Shale gathering and treating business in Northwest Louisiana, and Kinder Morgan contributed approximately $917 million in cash ($875 million for a 50% membership interest in KinderHawk and $42 million for certain closing adjustments including 2010 capital expenditures through the closing date) to KinderHawk. Upon the completion of the transaction both the Company and Kinder Morgan held a 50% membership interest in KinderHawk. KinderHawk distributed approximately $917 million to Hawk Field Services. The joint venture had an economic effective date of January 1, 2010, and Hawk Field Services continued to operate the business until September 30, 2010, at which date Hawk Field Services and Kinder Morgan terminated the transition services agreement and KinderHawk assumed operations of the joint venture. On July 1, 2011, the Company transferred its remaining 50% membership interest in KinderHawk to KM Gathering.

The Company is obligated to deliver to KinderHawk agreed upon minimum annual quantities of natural gas from Petrohawk operated wells producing from the Haynesville and Lower Bossier Shales with specified acreage in Northwest Louisiana through May 2015, or in the alternative, pay an annual true-up fee to KinderHawk if such minimum annual quantities are not delivered. The Company pays KinderHawk negotiated gathering and treating fees, subject to an annual inflation adjustment factor. The gathering fee is equal to $0.34 per thousand cubic feet (Mcf) of natural gas delivered at KinderHawk's receipt points. The treating fee is charged for gas delivered containing more than 2% by volume of carbon dioxide. For gas delivered containing between 2% and 5.5% carbon dioxide, the treating fee is between $0.030 and $0.345 per Mcf, and for gas containing over 5.5% carbon dioxide, the treating fee starts at $0.365 per Mcf and increases on a scale of $0.09 per Mcf for each additional 1% of carbon dioxide content. The Company's obligation to deliver minimum annual quantities of natural gas to KinderHawk through May 2015 remained in effect following the transfer of the Company's remaining 50% membership interest in KinderHawk on July 1, 2011.

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The KinderHawk joint venture is accounted for as a failed sale of in substance real estate under the provisions of ASC 360-20. ASC 360-20 establishes standards for recognition of profit on all real estate sales transactions other than retail land sales, without regard to the nature of the seller's business. In making the determination of whether a transaction qualifies, in substance, as a sale of real estate, the nature of the entire real estate being sold is considered, including the land plus the property improvements and the integral equipment. The Haynesville Shale gathering and treating system, consists of right of ways, pipelines and processing facilities. Due to the gathering agreement which constitutes extended continuing involvement under ASC 360-20, it has been determined that the contribution of the Company's Haynesville Shale gathering and treating system to form KinderHawk should be accounted for as a failed sale of in substance real estate.

As a result of the failed sale the Company accounts for the continued operations of the gas gathering system and reflects a financing obligation, representing the proceeds received, under the financing method of real estate accounting. Under the financing method, the historical cost of the Haynesville Shale gas gathering system contributed to KinderHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $1.7 billion. Reductions to the obligation and non cash interest on the financing obligation are tied to the gathering and treating services, as the Company delivers natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. Additionally the Company records KinderHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, and expenses on the unaudited condensed consolidated statements of operations in "Midstream revenues," "Taxes other than income," "Gathering, transportation and other," "General and administrative," "Interest expense and other" and "Depletion, depreciation and amortization."

On July 1, 2011, the Company transferred its remaining 50% membership interest in KinderHawk to KM Gathering. The historical cost of the Haynesville Shale gas gathering system is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheet and depreciated over the useful life of the assets.

Terryville

On May 12, 2010, the Company completed the sale of its interest in Terryville Field, located in Lincoln and Claiborne Parishes, Louisiana for $320 million in cash, before customary closing adjustments. Proceeds from the sale were recorded as a reduction to the carrying value of the Company's full cost pool with no gain or loss recorded. The transaction had an effective date of January 1, 2010. In conjunction with the closing, the Company deposited $75 million with a qualified intermediary to facilitate like-kind exchange transactions all of which had been utilized as of December 31, 2010.

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2. ACQUISITIONS AND DIVESTITURES (Continued)

West Edmond Hunton Lime Unit

On April 30, 2010, the Company completed the sale of its interest in the West Edmond Hunton Lime Unit (WEHLU) Field in Oklahoma County, Oklahoma for $155 million in cash, before customary closing adjustments. Proceeds from the sale were recorded as a reduction to the carrying value of the Company's full cost pool with no gain or loss recorded. The transaction had an effective date of April 1, 2010.

3. OIL AND NATURAL GAS PROPERTIES

The Company uses the full cost method of accounting for its investment in oil and natural gas properties. Under this method of accounting, all costs of acquisition, exploration and development of oil and natural gas reserves (including such costs as leasehold acquisition costs, geological expenditures, dry hole costs, tangible and intangible development costs and direct internal costs) are capitalized as the cost of oil and natural gas properties when incurred. To the extent capitalized costs of evaluated oil and natural gas properties, net of accumulated depletion exceed the discounted future net revenues of proved oil and natural gas reserves net of deferred taxes, such excess capitalized costs are charged to expense. The Company uses the unweighted arithmetic average first day of the month price for oil and natural gas for the 12-month period preceding the calculation date to calculate the future net revenues of proved reserves.

The Company assesses all items classified as unevaluated property on a quarterly basis for possible impairment or reduction in value. The Company assesses properties on an individual basis or as a group if properties are individually insignificant. The assessment includes consideration of the following factors, among others: intent to drill; remaining lease term; geological and geophysical evaluations; drilling results and activity; the assignment of proved reserves; and the economic viability of development if proved reserves are assigned. During any period in which these factors indicate an impairment, the cumulative drilling costs incurred to date for such property and all or a portion of the associated leasehold costs are transferred to the full cost pool and are then subject to amortization.

At September 30, 2011, the ceiling test value of the Company's reserves was calculated based on the first day average of the 12-months ended September 30, 2011 of the West Texas Intermediate (WTI) spot price of $94.51 per barrel, adjusted by lease or field for quality, transportation fees, and regional price differentials, and the first day average of the 12-months ended September 30, 2011 of the Henry Hub price of $4.16 per million British thermal units (Mmbtu), adjusted by lease or field for energy content, transportation fees, and regional price differentials. Using these prices, the Company's net book value of oil and natural gas properties at September 30, 2011 did not exceed the ceiling amount. Changes in production rates, levels of reserves, future development costs, and other factors will determine the Company's actual ceiling test calculation and impairment analyses in future periods.

At September 30, 2010, the ceiling test value of the Company's reserves was calculated based on the first day average of the 12-months ended September 30, 2010 of the WTI posted price of $75.55 per barrel, adjusted by lease or field for quality, transportation fees, and regional price differentials, and the first day average of the 12-months ended September 30, 2010 of the Henry Hub price of $4.41 per Mmbtu, adjusted by lease or field for energy content, transportation fees, and regional price differentials. Using these prices, the Company's net book value of oil and natural gas properties at September 30, 2010 did not exceed the ceiling amount.

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4. LONG-TERM DEBT

Long-term debt as of September 30, 2011 and December 31, 2010 consisted of the following:

	September 30, 2011(1)		December 31, 2010(1)

	(In thousands)
Senior revolving credit facility	$	—	$	146,000
EagleHawk senior revolving credit facility		56,500		—
6.25% $600 million senior notes(2)		600,000		—
7.25% $1.2 billion senior notes(3)		1,231,980		825,000
10.5% $600 million senior notes(4)		558,376		562,115
7.875% $800 million senior notes(5)		799,611		800,000
7.125% $275 million senior notes(6)		—		268,922
Deferred premiums on derivatives		4,375		10,815

	$	3,250,842	$	2,612,852

(1): Table excludes $16.5 million and $14.6 million of deferred premiums on derivative contracts which have been classified as current at September 30, 2011 and December 31, 2010, respectively. Table also excludes $0.2 million of 9.875% senior notes due 2011 which were classified as current at December 31, 2010.
(2): On May 20, 2011, the Company issued $600 million principal amount of its 6.25% senior notes due 2019. See "6.25% Senior Notes" below for more details.
(3): On August 17, 2010 and January 31, 2011, the Company issued an initial $825 million principal amount and an additional $400 million principal amount, respectively, of its 7.25% senior notes due 2018. Amount includes a $7.0 million premium at September 30, 2011, recorded by the Company in conjunction with the issuance of the additional $400 million principal amount. See "7.25% Senior Notes" below for more details.
(4): Table excludes $10.4 million of 10.5% senior notes due 2014 that were classified as current at September 30, 2011. Table includes a $31.3 million and $37.9 million discount, at September 30, 2011 and December 31, 2010, respectively, which was recorded by the Company in conjunction with the issuance of the 10.5% senior notes due 2014. See "10.5% Senior Notes" below for more details.
(5): Table excludes $0.4 million of 7.875% senior notes due 2015 that were classified as current at September 30, 2011. See "7.875% Senior Notes" below for more details.
(6): The 7.125% $275 million senior notes were redeemed during the first quarter of 2011. At December 31, 2010, amount includes a $3.5 million discount recorded by the Company in conjunction with the assumption of the notes. See "7.125% Senior Notes" below for more details.

Senior Revolving Credit Facility

Effective August 2, 2010, the Company amended and restated its existing credit facility dated October 14, 2009 by entering into the Fifth Amended and Restated Senior Revolving Credit Agreement (the Senior Credit Agreement), among the Company, each of the lenders from time to time party

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4. LONG-TERM DEBT (Continued)

thereto (the Lenders), BNP Paribas, as administrative agent for the Lenders, Bank of America, N.A. and Bank of Montreal as co-syndication agents for the Lenders, and JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A., as co-documentation agents for the Lenders. On July 1, 2011, the Company entered into the Fourth Amendment to the Senior Credit Agreement. The Fourth Amendment was entered into to facilitate the closing of the EagleHawk joint venture. The Fourth Amendment, among other things, permitted Hawk Field Services to: convey its Eagle Ford Shale gathering and treating business in South Texas to EagleHawk; transfer a 25% equity interest in EagleHawk to Kinder Morgan; enter into and abide by the terms of the operative documents governing the formation and operation of EagleHawk, and reaffirmed the oil and gas component of the Company's borrowing base under the Senior Credit Agreement at $1.8 billion, while reducing to zero the midstream component of the Company's borrowing base. As of September 30, 2011, the Senior Credit Agreement provided for a $2.5 billion facility and the borrowing base was approximately $1.8 billion. The portion of the borrowing base relating to the Company's oil and natural gas properties is redetermined on a semi-annual basis (with the Company and the Lenders each having the right to one annual interim unscheduled redetermination) and adjusted based on the Company's oil and natural gas properties, reserves, other indebtedness and other relevant factors. At September 30, 2011, the Company had approximately $24.5 million outstanding letters of credit with various customers, vendors and others. The Company's borrowing base is subject to a reduction equal to the product of $0.25 multiplied by the stated principal amount (without regard to any initial issue discount) of any unsecured senior or senior subordinated notes that the Company may issue. Effective October 3, 2011, the Company reduced the borrowing capacity under Senior Credit Agreement from $2.5 billion to $25 million. Refer to Note 14, "Subsequent Events" for more details. The Company's primary sources of capital and liquidity have historically been internally generated cash flows from operations, proceeds from asset sales and availability under the Senior Credit Agreement. The Company's future capital resources and liquidity will be from internally generated cash flows from operations and funding from the Parent.

Amounts outstanding under the Senior Credit Agreement bear interest at specified margins over the London Interbank Offered Rate (LIBOR) of 1.50% to 2.50% for Eurodollar loans or at specified margins over the Alternate Base Rate (ABR) of 0.50% to 1.50% for ABR loans. Such margins will fluctuate based on the utilization of the facility. Borrowings under the Senior Credit Agreement are secured by first priority liens on substantially all of the Company's assets, including pursuant to the terms of the Fifth Amended and Restated Guarantee and Collateral Agreement, all of the assets of, and equity interests in, the Company's subsidiaries. Amounts drawn down on the facility will mature on July 1, 2016.

The Senior Credit Agreement contains customary financial and other covenants, including minimum working capital levels (the ratio of current assets plus the unused commitment under the Senior Credit Agreement to current liabilities) of not less than 1.0 to 1.0 and minimum coverage of interest expenses (as defined in the Senior Credit Agreement) of not less than 2.5 to 1.0. In addition, the Company is subject to covenants limiting dividends and other restricted payments, transactions with affiliates, incurrence of debt, changes of control, asset sales, and liens on properties. As previously reported in the Company's Form 8-K filed on August 19, 2011, a Waiver and Consent dated August 15, 2011 waived the change of control and other defaults and events of default caused by the consummation of the transactions with BHP Billiton Limited. Additionally, effective September 27, 2011, the Company's compliance obligations with respect to the aforementioned minimum working capital level and minimum coverage of interest expense covenants, as well as the Company's

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

4. LONG-TERM DEBT (Continued)

compliance obligations with respect to certain other covenants in the Senior Credit Agreement including reserve report and other information delivery, were suspended until March 31, 2012.

EagleHawk Revolving Credit Facility

On July 1, 2011, EagleHawk, each of the lenders from time to time party hereto (the EagleHawk Lenders), and Wells Fargo Bank, N.A., as administrative agent for the EagleHawk Lenders, entered into a Revolving Credit Agreement (the EagleHawk Revolving Credit Agreement). The EagleHawk Revolving Credit Agreement provides for up to a $250 million credit facility with initial availability of $75 million. As of September 30, 2011, the amount of the EagleHawk Revolving Credit Agreement remained at $75 million, but could be increased to a maximum of $250 million, subject to certain conditions, including if EBITDA (as defined in the EagleHawk Revolving Credit Agreement) for the most recently completed four fiscal quarters for which financial statements are available is equal to at least one-half of the proposed aggregate commitment amount.

Amounts outstanding under the EagleHawk Revolving Credit Agreement bear interest at specified margins over the LIBOR (as adjusted pursuant to the terms of the EagleHawk Revolving Credit Agreement) of 2.00% to 2.50% for Eurodollar loans or at specified margins over the ABR of 1.00% to 1.50% for ABR loans. Such margins will fluctuate based on the Company's Leverage Ratio (as defined in the EagleHawk Revolving Credit Agreement).

The EagleHawk Revolving Credit Agreement contains customary financial and other covenants, including a maximum leverage ratio (the ratio to total debt to EBITDA for the last four fiscal quarters) of 3.0 to 1.0. In addition, EagleHawk is subject to covenants limiting restricted payments, incurrence of debt, changes of control, asset sales, and liens on properties. At September 30, 2011, EagleHawk was in compliance with its maximum leverage ratio under the EagleHawk Revolving Credit Agreement.

6.25% Senior Notes

On May 20, 2011, the Company completed a private placement offering to eligible purchasers of an aggregate principal amount of $600 million of its 6.25% senior notes due 2019 (the 2019 Notes). The 2019 Notes were issued under and are governed by an indenture dated May 20, 2011, between the Company, U.S. Bank Trust National Association, as trustee, and the Company's subsidiaries named therein as guarantors (the 2019 Indenture). The 2019 Notes were sold to investors at 100% of the aggregate principal amount of the 2019 Notes. The net proceeds from the sale of the 2019 Notes were approximately $589 million (after deducting offering fees and expenses). The proceeds were used to repay borrowings outstanding under the Company's senior revolving credit facility and for working capital for general corporate purposes.

The 2019 Notes bear interest at a rate of 6.25% per annum, payable semi-annually on June 1 and December 1 of each year, commencing on December 1, 2011. The 2019 Notes will mature on June 1, 2019. The 2019 Notes are senior unsecured obligations of the Company and rank equally with all of its current and future senior indebtedness. The 2019 Notes are jointly and severally, fully and unconditionally guaranteed on a senior unsecured basis by the Company's subsidiaries. Petrohawk Energy Corporation, the issuer of the 2019 Notes, has no material independent assets or operations apart from the assets and operations of its subsidiaries.

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4. LONG-TERM DEBT (Continued)

On or prior to June 1, 2014, the Company may redeem up to 35% of the aggregate principal amount of the 2019 Notes with the net cash proceeds of certain equity offerings at a redemption price of 106.25% of the principal amount, plus accrued and unpaid interest to the redemption date; provided that at least 65% in aggregate principal of the 2019 Notes originally issued under the 2019 Indenture remain outstanding immediately after the redemption. In addition, on or prior to June 1, 2015, the Company may redeem all or part of the 2019 Notes at a redemption price equal to the principal amount, plus accrued and unpaid interest, plus a make whole premium equal to the excess, if any of (a) the present value at such time of (i) the redemption price of such note at June 1, 2015 plus (ii) any required interest payments due on such note through June 1, 2015 (except for currently accrued and unpaid interest), computed using a discount rate equal to the Treasury Rate plus 50 basis points, discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months), over (b) the principal amount of such Note.

On or prior to June 1, 2015, the Company may redeem all or a part of the 2019 Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make-whole premium, together with accrued and unpaid interest, if any, to the redemption date. The 2019 Notes will be redeemable, in whole or in part, on or after June 1 of the years indicated below, at redemption prices equal to the principal amount multiplied by the percentage set forth below, plus accrued and unpaid interest:

Year

2015	103.125	%
2016	101.563	%
2017 and thereafter	100.000	%

The Company is required to offer to repurchase the 2019 Notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, in the event of a change of control as defined in the 2019 Indenture that is followed by a decline within 90 days in the ratings of the 2019 Notes published by either Moody's Investor Service, Inc. (Moody's) or Standard & Poor's Rating Services (S&P). The Company's credit rating did not decline in the allotted period of time after the change of control with the closing of the BHP merger. As a result, no such offer was made. The 2019 Indenture contains covenants that, among other things, restrict or limit the ability of the Company and its subsidiaries to: borrow money; pay dividends on stock; purchase or redeem stock or subordinated indebtedness; make investments; create liens; enter into transactions with affiliates; sell assets; and merge with or into other companies or transfer all or substantially all of the Company's assets.

7.25% Senior Notes

On August 17, 2010, the Company completed a private placement offering to eligible purchasers of an aggregate principal amount of $825 million of its 7.25% senior notes due 2018 (the initial 2018 Notes) at a purchase price of 100% of the principal amount of the initial 2018 Notes. The initial 2018 Notes were issued under and are governed by an indenture dated August 17, 2010, between the Company, U.S. Bank Trust National Association, as trustee, and the Company's subsidiaries named therein as guarantors (the 2018 Indenture). The Company applied the net proceeds from the sale of the initial 2018 Notes to redeem its 9.125% $775 million senior notes due 2013.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

4. LONG-TERM DEBT (Continued)

On January 31, 2011, the Company completed the issuance of an additional $400 million aggregate principal amount of its 7.25% senior notes due 2018 (the additional 2018 Notes) in a private placement to eligible purchasers. The additional 2018 Notes are issued under the same Indenture and are part of the same series as the initial 2018 Notes. The additional 2018 Notes together with the initial 2018 Notes are collectively referred to as the 2018 Notes.

The additional 2018 Notes were sold to Barclays Capital Inc. at 101.875% of the aggregate principal amount of the additional 2018 Notes plus accrued interest. The net proceeds from the sale of the additional 2018 Notes were approximately $400.5 million (after deducting offering fees and expenses). A portion of the proceeds of the additional 2018 Notes were utilized to redeem all of the Company's outstanding 7.125% $275 million senior notes due 2012.

Interest on the 2018 Notes is payable on February 15 and August 15 of each year, beginning on February 15, 2011. Interest on the 2018 Notes accrued from August 17, 2010, the original issuance date of the series. The 2018 Notes will mature on August 15, 2018. The 2018 Notes are senior unsecured obligations of the Company and rank equally with all of the Company's current and future senior indebtedness. The 2018 Notes are jointly and severally, fully and unconditionally guaranteed on a senior unsecured basis by the Company's subsidiaries. Petrohawk Energy Corporation, the issuer of the 2018 Notes, has no material independent assets or operations apart from the assets and operations of its subsidiaries.

On or prior to August 15, 2013, the Company may redeem up to 35% of the aggregate principal amount of the 2018 Notes with the net cash proceeds of certain equity offerings at a redemption price of 107.25% of the principal amount, plus accrued and unpaid interest to the redemption date; provided that at least 65% in aggregate principal amount of the 2018 Notes originally issued under the 2018 Indenture remain outstanding immediately after the redemption. In addition, at any time prior to August 15, 2014, the Company may redeem some or all of the 2018 Notes for the principal amount, plus accrued and unpaid interest, plus a make whole premium equal to the excess, if any of (a) the present value at such time of (i) the redemption price of such note at August 15, 2014, (ii) any required interest payments due on the notes (except for currently accrued and unpaid interest), computed using a discount rate equal to the Treasury Rate plus 50 basis points, discounted to the redemption date on a semi-annual basis, over (b) the principal amount of such note.

On or after August 15, 2014, the Company may redeem all or part of the 2018 Notes at any time or from time to time at the redemption prices (expressed as a percentage of principal amount) set forth in the following table plus accrued and unpaid interest, if any, to the applicable redemption date, if redeemed during the 12-month period beginning August 15 of the years indicated below:

Year

2014	103.625	%
2015	101.813	%
2016 and thereafter	100.000	%

The Company is required to offer to repurchase the 2018 Notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, in the event of a change of control as defined in the 2018 Indenture that is followed by a decline within 90 days in the ratings of the 2018 Notes published by either Moody's or S&P. The Company's credit rating did not

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4. LONG-TERM DEBT (Continued)

decline in the allotted period of time after the change of control with the closing of the BHP merger. As a result, no such offer was made. The 2018 Indenture contains covenants that, among other things, restrict or limit the ability of the Company and its subsidiaries to: borrow money; pay dividends on stock; purchase or redeem stock or subordinated indebtedness; make investments; create liens; enter into transactions with affiliates; sell assets; and merge with or into other companies or transfer all or substantially all of the Company's assets.

In conjunction with the issuance of the additional 2018 Notes, the Company recorded a premium of $7.5 million to be amortized over the remaining life of the notes utilizing the effective interest rate method. The remaining unamortized premium was $7.0 million at September 30, 2011.

10.5% Senior Notes

On January 27, 2009, the Company completed a private placement offering to eligible purchasers of an aggregate principal amount of $600 million of its 10.5% senior notes due 2014 (the 2014 Notes). The 2014 Notes were issued under and are governed by an indenture dated January 27, 2009, between the Company, U.S. Bank Trust National Association, as trustee, and the Company's subsidiaries named therein as guarantors (the 2014 Indenture).

The 2014 Notes bear interest at a rate of 10.5% per annum, payable semi-annually on February 1 and August 1 of each year. The 2014 Notes will mature on August 1, 2014. The Company is required to offer to repurchase the 2014 Notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, in the event of a change of control as defined in the 2014 Indenture. On September 16, 2011, the Company initialized an offer to repurchase the 2014 Notes, in accordance with the terms of the 2014 Indenture, due to the change of control resulting from the acquisition of the Company by BHP Billiton Limited. The holders of the 2014 Notes had until November 9, 2011 to tender their 2014 Notes. On November 14, 2011, the Company paid principal and interest of $10.8 million to repurchase a portion of the 2014 Notes at the request of the bondholders. The principal amount paid was classified as current at September 30, 2011. The 2014 Notes are senior unsecured obligations of the Company and rank equally with all of its current and future senior indebtedness. The 2014 Notes are jointly and severally, fully and unconditionally guaranteed on a senior unsecured basis by the Company's subsidiaries. Petrohawk Energy Corporation, the issuer of the 2014 Notes, has no material independent assets or operations apart from the assets and operations of its subsidiaries.

In conjunction with the issuance of the 2014 Notes, the Company recorded a discount of $52.3 million to be amortized over the remaining life of the notes utilizing the effective interest rate method. The remaining unamortized discount was $31.3 million at September 30, 2011.

7.875% Senior Notes

On May 13, 2008 and June 19, 2008, the Company issued $500 million principal amount and $300 million principal amount, respectively, of its 7.875% senior notes due 2015 (the 2015 Notes). The 2015 Notes were issued under and are governed by an indenture dated May 13, 2008, between the Company, U.S. Bank Trust National Association, as trustee, and the Company's subsidiaries named therein as guarantors (the 2015 Indenture).

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

4. LONG-TERM DEBT (Continued)

The 2015 Notes bear interest at a rate of 7.875% per annum, payable semi-annually on June 1 and December 1 of each year. The 2015 Notes will mature on June 1, 2015. The Company is required to offer to repurchase the 2015 Notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, in the event of a change of control as defined in the 2015 Indenture. On September 16, 2011, the Company initialized an offer to repurchase the 2015 Notes, in accordance with the terms of the 2015 Indenture, due to the change of control resulting from the acquisition of the Company by BHP Billiton Limited. The holders of the 2015 Notes had until November 9, 2011 to tender their 2015 Notes. On November 14, 2011, the Company paid principal and interest of $0.4 million to repurchase a portion of the 2015 Notes at the request of the bondholders. The principal amount paid was classified as current at September 30, 2011. The 2015 Notes are senior unsecured obligations of the Company and rank equally with all of its current and future senior indebtedness. The 2015 Notes are jointly and severally, fully and unconditionally guaranteed on a senior unsecured basis by the Company's subsidiaries. Petrohawk Energy Corporation, the issuer of the 2015 Notes, has no material independent assets or operations apart from the assets and operations of its subsidiaries.

7.125% Senior Notes

On July 12, 2006, the date of the Company's merger with KCS Energy, Inc. (KCS), the Company assumed (pursuant to the Second Supplemental Indenture relating to the 7.125% Senior Notes, also referred to as the 2012 Notes), and subsidiaries of the Company guaranteed (pursuant to the Third Supplemental Indenture relating to such notes), all the obligations (approximately $275 million) of KCS under the 2012 Notes and the Indenture dated April 1, 2004 (the 2012 Indenture) among KCS, U.S. Bank National Association, as trustee, and the subsidiary guarantors named therein, which governs the terms of the 2012 Notes. Interest on the 2012 Notes is payable semi-annually, on each April 1 and October 1. The 2012 Notes are jointly and severally, fully and unconditionally guaranteed on a senior unsecured basis by the Company's subsidiaries, other than a minor subsidiary. Petrohawk Energy Corporation, the issuer of the 2012 Notes, has no material independent assets or operations apart from the assets and operations of its subsidiaries.

In conjunction with the assumption of the 7.125% Senior Notes from KCS, the Company recorded a discount of $13.6 million to be amortized over the remaining life of the notes utilizing the effective interest rate method. The Company had no remaining unamortized discount at September 30, 2011 and $3.5 million at December 31, 2010.

On March 17, 2011, the Company redeemed all of the outstanding 2012 Notes with a portion of the proceeds received from the issuance of the additional 2018 Notes.

9.875% Senior Notes

On April 8, 2004, Mission Resources Corporation (Mission) issued $130 million of its 9.875% senior notes due 2011 (the 2011 Notes). The Company assumed these notes upon the closing of the Company's merger with Mission. In conjunction with the Company's merger with KCS, the Company repurchased substantially all of the 2011 Notes. In connection with the extinguishment of substantially all of the 2011 Notes, the Company requested and received from the noteholders consent to eliminate the debt covenants associated with the 2011 Notes. There were approximately $0.2 million of the notes

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

4. LONG-TERM DEBT (Continued)

that were not redeemed and were still outstanding and classified as current as of December 31, 2010. On April 1, 2011, the Company repaid the $0.2 million of the 2011 Notes that were outstanding.

Debt Issuance Costs

The Company capitalizes certain direct costs associated with the issuance of long-term debt. During the first nine months of 2011, the Company capitalized $26.0 million in debt issuance costs associated with the issuances of the additional 2018 Notes and the 2019 Notes, as well as costs incurred for amendments to the Company's Senior Credit Agreement and the EagleHawk Revolving Credit Agreement. In the first quarter of 2011, the Company wrote off $0.2 million of debt issuance costs as a result of the additional 2018 Notes issuance and the corresponding reduction of the Company's Senior Credit Agreement. In the third quarter of 2011, the Company wrote off $0.8 million of debt issuance costs as a result of the removal of the midstream borrowing base component in the Company's Senior Credit Agreement. At September 30, 2011 and December 31, 2010, the Company had approximately $62.1 million and $45.9 million, respectively, of debt issuance costs remaining that are being amortized over the lives of the respective debt.

5. FAIR VALUE MEASUREMENTS

Pursuant to ASC 820, Fair Value Measurements and Disclosures (ASC 820) the Company's determination of fair value incorporates not only the credit standing of the counterparties involved in transactions with the Company resulting in receivables on the Company's unaudited condensed consolidated balance sheets, but also the impact of the Company's nonperformance risk on its own liabilities. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated, or generally unobservable. The Company classifies fair value balances based on the observability of those inputs.

The following tables set forth by level within the fair value hierarchy the Company's financial assets and liabilities that were accounted for at fair value as of September 30, 2011 and December 31, 2010. As required by ASC 820, a financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company's assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels. There were no transfers between fair value hierarchy levels for the nine months ended September 30, 2011 and for the year ended December 31, 2010.

		September 30, 2011

		Level 1		Level 2		Level 3		Total
		(In thousands)
Assets:
	Receivables from derivative contracts	$	—	$	296,910	$	—	$	296,910

Liabilities:
	Liabilities from derivative contracts	$	—	$	398	$	—	$	398

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

5. FAIR VALUE MEASUREMENTS (Continued)

		December 31, 2010

		Level 1		Level 2		Level 3		Total
		(In thousands)
Assets:
	Receivables from derivative contracts	$	—	$	258,739	$	—	$	258,739

Liabilities:
	Liabilities from derivative contracts	$	—	$	19,395	$	—	$	19,395

Derivatives listed above include collars and swaps that are carried at fair value. The Company records the net change in the fair value of these positions in "Net gain on derivative contracts" in the Company's unaudited condensed consolidated statements of operations. The Company is able to value the assets and liabilities based on observable market data for similar instruments, which resulted in the Company reporting its derivatives as Level 2. This observable data includes the forward curve for commodity prices based on quoted markets prices and implied volatility factors related to changes in the forward curves. For further discussion of the Company's derivatives, see Note 8, "Derivatives."

As of September 30, 2011 and December 31, 2010, the Company's derivative contracts were with major financial institutions with investment grade credit ratings which are believed to have a minimal credit risk. As such, the Company is exposed to credit risk to the extent of nonperformance by the counterparties in the derivative contracts discussed above; however, the Company does not anticipate such nonperformance. Each of the counterparties to the Company's derivative contracts is a lender in the Company's Senior Credit Agreement. The Company did not post collateral under any of these contracts as they are secured under the Senior Credit Agreement.

The following disclosure of the estimated fair value of financial instruments is made in accordance with the requirements of ASC 825, Financial Instruments. The estimated fair value amounts have been determined at discrete points in time based on relevant market information. These estimates involve uncertainties and cannot be determined with precision. The estimated fair value of cash, accounts receivable and accounts payable approximates their carrying value due to their short-term nature. The estimated fair value of the Company's and EagleHawk's Senior Credit Agreements approximates carrying value because the facilities' interest rates approximate current market rates. The following table presents the estimated fair values of the Company's fixed interest rate, debt instruments as of

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5. FAIR VALUE MEASUREMENTS (Continued)

September 30, 2011 and December 31, 2010 (excluding premiums and discounts and deferred premiums on derivative contracts, and including certain amounts that have been classified as current):

	September 30, 2011				December 31, 2010

Debt	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
	(In thousands)
6.25% $600 million senior notes	$	600,000	$	675,000	$	—	$	—
7.25% $1.2 billion senior notes		1,225,000		1,422,531		825,000		832,425
10.5% $600 million senior notes(1)		600,000		675,750		600,000		684,000
7.875% $800 million senior notes(2)		800,000		856,000		800,000		834,000
7.125% $275 million senior notes		—		—		272,375		273,465
9.875% senior notes(3)		—		—		224		225

	$	3,225,000	$	3,629,281	$	2,497,599	$	2,624,115

(1): Approximately $10.4 million of the 10.5% $600 million senior notes were classified as current at September 30, 2011 and as long-term at December 31, 2010.
(2): Approximately $0.4 million of the 7.875% $800 million senior notes were classified as current at September 30, 2011 and as long-term at December 31, 2010.
(3): The 9.875% senior notes due 2011 were classified as current at December 31, 2010.

The fair values of the Company's fixed interest debt instruments were calculated using quoted market prices based on trades of such debt as of September 30, 2011 and December 31, 2010.

6. ASSET RETIREMENT OBLIGATIONS

For wells drilled, the Company records an asset retirement obligation (ARO) when the total depth of a drilled well is reached and the Company can reasonably estimate the fair value of an obligation to perform site reclamation, dismantle facilities or plug and abandon costs. For gas gathering systems and equipment, the Company records an ARO when the system is placed in service and the Company can reasonably estimate the fair value of an obligation to perform site reclamation and other necessary work. The Company records the ARO liability on the unaudited condensed consolidated balance sheets and capitalizes the cost in "Oil and natural gas properties" or "Gas gathering systems and equipment" during the period in which the obligation is incurred. The Company records the accretion of its ARO liabilities in "Depletion, depreciation and amortization" expense in the unaudited condensed consolidated statements of operations. The additional capitalized costs are depreciated on a unit-of-production basis or straight-line basis.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

6. ASSET RETIREMENT OBLIGATIONS (Continued)

The Company recorded the following activity related to its ARO liability for the nine months ended September 30, 2011 (in thousands):


Liability for asset retirement obligation as of December 31, 2010	$	31,741
Liabilities settled and divested		(534	)
Additions		11,333
Acquisitions		36
Accretion expense		1,499

Liability for asset retirement obligation as of September 30, 2011	$	44,075

7. COMMITMENTS AND CONTINGENCIES

Commitments

The Company leases corporate office space in Houston, Texas and Tulsa, Oklahoma as well as a number of other field office locations. In addition, the Company has lease commitments related to certain vehicles, machinery and equipment under long-term operating leases. Rent expense was $5.9 million and $4.7 million for the nine months ended September 30, 2011 and 2010, respectively.

As of September 30, 2011, the Company had the following commitments:

	Total Obligation Amount(1)

	(in thousands)
Gathering and transportation commitments	$	2,363,637	18
Drilling rig commitments		332,572	4
Non-cancelable operating leases		35,350	7
Pipeline and well equipment obligations		71,080	1
Various contractual commitments (including, among other things, rental equipment obligations, obtaining and processing seismic data and fracture stimulation services)		74,650	2

Total commitments	$	2,877,289

(1): On May 21, 2010, the Company created a joint venture with Kinder Morgan, KinderHawk, which engages in the natural gas midstream business in Northwest Louisiana, focused on the Haynesville and Lower Bossier Shales. As part of this transaction, the Company was committed to fund up to an additional $41.4 million, as of June 30, 2011, in capital during 2011 in the event KinderHawk required capital to finance its planned capital expenditures. On July 1, 2011, in conjunction with the closing of the Company's transfer of its remaining 50% membership interest in KinderHawk, the balance of the Company's capital commitment to KinderHawk was relieved. In addition to the capital commitment, the Company is obligated to deliver to KinderHawk agreed upon minimum annual quantities of natural gas from Petrohawk operated wells producing from the Haynesville and Lower Bossier Shales in North Louisiana through May 2015, or in the alternative, pay an annual true-up fee to KinderHawk if such minimum annual

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7. COMMITMENTS AND CONTINGENCIES (Continued)

quantities are not delivered. To date, the Company has not been obligated to pay a true-up fee, as production from this acreage has exceeded the minimum annual quantities required. The minimum annual quantities commitment is not reflected in the amounts shown in the table above. The Company's obligation to deliver minimum annual quantities of natural gas to KinderHawk through May 2015 remains in effect following the transfer of the Company's remaining 50% membership interest in KinderHawk on July 1, 2011. The Company pays to KinderHawk negotiated gathering and treating fees, subject to an annual inflation adjustment factor.

The KinderHawk joint venture, as discussed above, is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. Due to the gathering agreement entered into with the formation of KinderHawk, which constitutes extended continuing involvement under ASC 360-20, it has been determined that the contribution of the Company's Haynesville Shale gathering and treating system to form KinderHawk is accounted for as a failed sale of in substance real estate. See Note 2, "Acquisitions and Divestitures" for more details regarding the KinderHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. As a result of the failed sale, the Company recorded a financing obligation, representing the proceeds received, under the financing method of real estate accounting. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $1.7 billion. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as the Company delivers natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. This obligation is not reflected in the amounts shown in the table above.

The Company's transfer of a 25% interest in EagleHawk to Kinder Morgan, on July 1, 2011, is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. Due to the gathering agreements which constitute extended continuing involvement under ASC 360-20, that were either entered into in conjunction with the closing of the EagleHawk transaction or assigned to EagleHawk at the closing of the transaction, it has been determined that the transfer of the Company's Eagle Ford Shale gathering and treating systems to EagleHawk is accounted for as a failed sale of in substance real estate. See Note 2, "Acquisitions and Divestitures" for more details regarding the EagleHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. As a result of the failed sale, the Company recorded a financing obligation, representing the proceeds received, under the financing method of real estate accounting. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $93 million. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as the Company delivers its production through the Eagle Ford Shale gathering and treating systems. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. This obligation is not reflected in the amounts shown in the table above.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

7. COMMITMENTS AND CONTINGENCIES (Continued)

The balance of the Company's financing obligation as of September 30, 2011, was approximately $1.8 billion, of which approximately $16.8 million was classified as current.

Contingencies

From time to time, the Company may be a plaintiff or defendant in a pending or threatened legal proceeding arising in the normal course of its business. All known liabilities are accrued based on the Company's best estimate of the potential loss. While the outcome and impact of currently pending legal proceedings cannot be determined, the Company's management and legal counsel believe that the resolution of these proceedings through settlement or adverse judgment will not have a material adverse effect on the Company's unaudited condensed consolidated operating results, financial position or cash flows. Please refer to Part II. Other Information, Item 1. Legal Proceedings for further information on pending cases.

8. DERIVATIVES

The Company is exposed to certain risks relating to its ongoing business operations, such as commodity price risk and interest rate risk. Derivative contracts are utilized to economically hedge its exposure to price fluctuations and reduce the variability in the Company's cash flows associated with anticipated sales of future oil, natural gas and natural gas liquids production. Historically, the Company hedged a substantial, but varying, portion of anticipated oil, natural gas and natural gas liquids production for the next 12 to 36 months. As a result of the BHP Merger, the Company is currently assessing its hedging strategy for the future. Derivatives are carried at fair value on the unaudited condensed consolidated balance sheets, with the changes in the fair value included in the unaudited condensed consolidated statements of operations for the period in which the change occurs. Historically, the Company has also entered into interest rate swaps to mitigate exposure to market rate fluctuations by converting variable interest rates (such as those on the Company's Senior Credit Agreement) to fixed interest rates and may do so at some point in the future as situations present themselves.

It is the Company's policy to enter into derivative contracts, including interest rate swaps, only with counterparties that are creditworthy financial institutions deemed by management as competent and competitive market makers. Each of the counterparties to the Company's derivative contracts is a lender in the Company's Senior Credit Agreement. The Company did not post collateral under any of these contracts as they are secured under the Company's Senior Credit Agreement.

At September 30, 2011 the Company had entered into commodity collars and swaps. The Company has elected to not designate any of its derivative contracts for hedge accounting. Accordingly, the Company records the net change in the mark-to-market valuation of these derivative contracts, as well as all payments and receipts on settled derivative contracts, in "Net gain on derivatives contracts" on the unaudited condensed consolidated statements of operations.

At September 30, 2011, the Company had 109 open commodity derivative contracts summarized in the tables below: 11 natural gas swap arrangements, 76 natural gas collar arrangements, 21 crude oil collar arrangements, and one natural gas liquids swap (which was an ethane swap). Derivative commodity contracts settle based on NYMEX WTI and Henry Hub prices, or the applicable information service for the Company's natural gas liquids contracts, which may have differed from the

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

8. DERIVATIVES (Continued)

actual price received by the Company for the sale of its oil, natural gas and natural gas liquids production.

At December 31, 2010, the Company had 79 open commodity derivative contracts summarized in the tables below: 60 natural gas collar arrangements, two natural gas swap arrangements, 16 crude oil collar arrangements, and one natural gas liquids swap (which was an ethane swap). Derivative commodity contracts in 2010 settled based on NYMEX WTI and Henry Hub prices, or the applicable information service for the Company's natural gas liquids contracts, which may have differed from the actual price received by the Company for the sale of its oil, natural gas and natural gas liquids production.

All derivative contracts are recorded at fair market value in accordance with ASC 815 and ASC 820 and included in the unaudited condensed consolidated balance sheets as assets or liabilities. The following table summarizes the location and fair value amounts of all derivative contracts in the unaudited condensed consolidated balance sheets as of September 30, 2011 and December 31, 2010:

	Asset derivative contracts					Liability derivative contracts

Derivatives not designated as hedging contracts under ASC 815	Balance sheet location	September 30, 2011		December 31, 2010		Balance sheet location	September 30, 2011			December 31, 2010
		(In thousands)					(In thousands)
Commodity contracts	Current assets— receivables from derivative contracts	$	250,663	$	217,018	Current liabilities—liabilities from derivative contracts	$	(398	)	$	(5,820	)
Commodity contracts	Other noncurrent assets—receivables from derivative contracts		46,247		41,721	Other noncurrent liabilities—liabilities from derivative contracts		—			(13,575	)

Total derivatives not designated as hedging contracts under ASC 815		$	296,910	$	258,739		$	(398	)	$	(19,395	)

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

8. DERIVATIVES (Continued)

The following table summarizes the location and amounts of the Company's realized and unrealized gains and losses on derivative contracts in the Company's unaudited condensed consolidated statements of operations:

		Amount of gain or (loss) recognized in income on derivative contracts three months ended September 30,				Amount of gain or (loss) recognized in income on derivative contracts nine months ended September 30,

	Location of gain or (loss) recognized in income on derivative contracts
Derivatives not designated as hedging contracts under ASC 815		2011		2010		2011		2010
		(In thousands)				(In thousands)
Unrealized gain on commodity contracts	Other income (expenses)—net gain on derivative contracts	$	134,489	$	87,557	$	50,580	$	190,228
Realized gain on commodity contracts	Other income (expenses)—net gain on derivative contracts		64,951		60,335		181,460		155,742

Total net gain on derivative contracts	Other income (expenses)—net gain on derivative contracts	$	199,440	$	147,892	$	232,040	$	345,970

At September 30, 2011, the Company had the following open derivative contracts:

			September 30, 2011

					Floors			Ceilings
			Volume in Mmbtu's/ Bbl's/ Gal's		Floors			Ceilings
Period	Instrument	Commodity	Volume in Mmbtu's/ Bbl's/ Gal's		Price/ Price Range	Weighted Average Price		Price/ Price Range	Weighted Average Price
October 2011 - December 2011	Collars	Natural gas		48,760,000	$4.75 - $6.00	$	5.53	$5.05 - $10.30	$	9.57
October 2011 - December 2011	Collars	Crude oil		598,000	75.00 - 80.00		78.31	95.00 - 118.00		101.82
October 2011 - December 2011	Swaps	Natural gas liquids		1,200,000	0.46		0.46
January 2012 - December 2012	Collars	Natural gas		184,830,000	4.75 - 5.00		4.86	5.70 - 8.00		6.55
January 2012 - December 2012	Swaps	Natural gas		36,600,000	5.05 - 5.20		5.16
January 2012 - December 2012	Collars	Crude oil		5,124,000	75.00 - 90.00		80.71	98.00 - 130.00		104.27
January 2013 - December 2013	Swaps	Natural gas		3,650,000	5.40		5.40

At December 31, 2010, the Company had the following open derivative contracts:

			December 31, 2010

					Floors			Ceilings
			Volume in Mmbtu's/ Bbl's/ Gal's		Floors			Ceilings
Period	Instrument	Commodity	Volume in Mmbtu's/ Bbl's/ Gal's		Price/ Price Range	Weighted Average Price		Price/ Price Range	Weighted Average Price
January 2011 - December 2011	Collars	Natural gas		189,800,000	$5.50 - $6.00	$	5.55	$9.00 - $10.30	$	9.66
January 2011 - December 2011	Collars	Crude oil		2,007,500	75.00 - 80.00		78.00	95.00 - 101.00		98.88
January 2011 - December 2011	Swaps	Natural gas liquids		4,800,000	0.46		0.46
January 2012 - December 2012	Collars	Natural gas		118,950,000	4.75 - 5.00		4.92	5.72 - 8.00		6.96
January 2012 - December 2012	Swaps	Natural gas		7,320,000	5.20		5.20
January 2012 - December 2012	Collars	Crude oil		3,660,000	75.00 - 80.00		77.00	98.00 - 102.45		100.00

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

9. STOCKHOLDERS' EQUITY

As discussed in Note 1, "Financial Statement Presentation," pursuant to the terms of the Merger Agreement on August 20, 2011, Purchaser accepted for payment all Shares of the Company's Common Stock, approximately 293.9 million Shares, representing approximately 97.4% of the total outstanding Shares and on August 25, 2011 Purchaser completed a short-form merger under Delaware law of Purchaser with and into the Company, with the Company being the surviving corporation. At the effective time of such merger, each Share issued and outstanding immediately prior to the effective time of such merger ceased to be issued and outstanding and were converted into the right to receive an amount in cash equal to the Offer Price, without interest. As a result of such merger, the Company is authorized to issue 100 shares with par value of $0.001 per share all of which are owned by Parent.

Stock Options and Stock Appreciation Rights

During the nine months ended September 30, 2011, the Company granted stock options covering 2.3 million shares of common stock to employees of the Company, with exercise prices ranging from $20.57 to $38.21 with a weighted average price of $20.67. These awards vest over a three year period at a rate of one-third on the annual anniversary date of the grant, subject to acceleration in the event of a change of control of the Company, and expire ten years from the grant date. As discussed above, the Company completed the BHP Merger on August 25, 2011. In conjunction with the BHP Merger, the Company cancelled all of its unexercised stock options and stock appreciation rights, including vested and unvested, and distributed the excess of $38.75 over the exercise price per unit to each holder, net of applicable withholding taxes. As a result, all of the Company's remaining unrecognized compensation expense of $25.2 million was accelerated and recognized as stock-based compensation expense. No stock options or stock appreciation rights remain outstanding as of September 30, 2011.

During the nine months ended September 30, 2010, the Company granted stock options covering 2.1 million shares of common stock to employees of the Company, with exercise prices ranging from $15.47 to $23.58 with a weighted average price of $21.10. These awards vest over a three year period at a rate of one-third on the annual anniversary date of the grant, subject to acceleration in the event of a change of control of the Company, and expire ten years from the grant date. At September 30, 2010, the unrecognized compensation expense related to non-vested stock appreciation rights and stock options totaled $17.2 million and was to be recognized on a straight line basis over the weighted average remaining vesting period of 1.2 years.

Restricted Stock

During the nine months ended September 30, 2011, the Company granted 1.3 million shares of restricted stock to employees of the Company and non-employee directors. These restricted shares were granted at prices ranging from $20.57 to $38.21 with a weighted average price of $20.86. Employee shares vest over a three-year period at a rate of one-third on the annual anniversary date of the grant, subject to acceleration in the event of a change of control of the Company, and the non-employee directors' shares vest six-months from the date of grant. As discussed above, the Company completed the BHP Merger on August 25, 2011. In conjunction with the BHP Merger, the Company purchased and cancelled all of the outstanding unvested restricted stock from employees and non-employee directors of the Company, and distributed $38.75 per share to each holder, net of applicable withholding taxes. As a result, all of the Company's remaining unrecognized compensation expense of $27.3 million was accelerated and recognized as stock-based compensation expense. No restricted stock remains outstanding as of September 30, 2011.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

9. STOCKHOLDERS' EQUITY (Continued)

During the nine months ended September 30, 2010, the Company granted 1.2 million shares of restricted stock to employees of the Company and non-employee directors. These restricted shares were granted at prices ranging from $15.47 to $23.58 with a weighted average price of $20.84. Employee shares vest over a three-year period at a rate of one-third on the annual anniversary date of the grant, subject to acceleration in the event of a change of control of the Company, and the non-employee directors' shares vest six-months from the date of grant. At September 30, 2010, the unrecognized compensation expense related to non-vested restricted stock totaled $19.2 million and was to be recognized on a straight line basis over the weighted average remaining vesting period of 1.1 years.

Assumptions

The assumptions used in calculating the fair value of the Company's stock-based compensation are disclosed in the following table:

	Nine Months Ended September 30,

	2011			2010
Weighted average value per option granted during the period	$	10.52		$	10.26
Stock price volatility(1)(2)		58.0	%		62.0	%
Risk free rate of return		2.01	%		2.02	%
Expected term		5.0 years			4.0 years

(1): The Company's estimated future forfeiture rate is approximately 5% based on the Company's historical forfeiture rate. Calculated using the Black-Scholes fair value based method. The Company does not pay dividends on its common stock.
(2): The Company utilizes a combination of implied and historic volatility.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

10. ADDITIONAL FINANCIAL STATEMENT INFORMATION

Certain balance sheet amounts are comprised of the following:

		September 30, 2011		December 31, 2010

		(In thousands)
Accounts receivable:
	Oil and natural gas revenues	$	196,268	$	146,823
	Marketing revenues		—		43,462
	Joint interest accounts		169,796		122,602
	Income and other taxes receivable		27,212		40,016
	Other		4,776		3,694

		$	398,052	$	356,597

Prepaids and other:
	Prepaid insurance	$	9,174	$	3,871
	Prepaid drilling costs		36,114		55,871
	Other		4,248		3,089

		$	49,536	$	62,831

Accounts payable and accrued liabilities:
	Trade payables	$	28,449	$	70,324
	Revenues and royalties payable		69,242		154,559
	Accrued oil and natural gas capital costs		403,283		353,280
	Accrued midstream capital costs		28,425		13,703
	Accrued interest expense		56,863		58,858
	Prepayment liabilities		14,435		42,329
	Accrued lease operating expenses		11,310		10,207
	Accrued ad valorem taxes payable		23,226		8,834
	Accrued production taxes payable		4,434		2,177
	Accrued gathering, transportation and other expenses		48,245		22,493
	Accrued employee compensation		36,741		11,401
	Income taxes payable		20,472		8
	Other		141,185		39,065

		$	886,310	$	787,238

11. SEGMENTS

In accordance with ASC 280, Segment Reporting (ASC 280), the Company has identified two reportable segments: oil and natural gas production and midstream operations. The oil and natural gas production segment is responsible for acquisition, exploration, development and production of oil and natural gas properties, while the midstream operations segment is responsible for gathering and treating natural gas for the Company and third parties. The Company's Chief Operating Decision Maker evaluates the performance of the reportable segments based on "Income from continuing operations before income taxes."

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

11. SEGMENTS (Continued)

As discussed in Note 2, "Acquisitions and Divestitures," on May 21, 2010, the Company contributed its Haynesville Shale gathering and treating business to form a joint venture entity with Kinder Morgan called KinderHawk. The joint venture is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. As a result of the failed sale the Company accounts for the continued operations of the gas gathering system and reflects a financing obligation, representing the proceeds received, under the financing method of real estate accounting. Under the financing method, the historical cost of the Haynesville Shale gas gathering system contributed to KinderHawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. The financing obligation is recorded on the unaudited condensed consolidated balance sheet in "Payable on financing arrangements," in the amount of approximately $917 million. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as the Company delivers natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. Additionally the Company records KinderHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, and expenses on the unaudited condensed consolidated statements of operations in "Midstream revenues," "Taxes other than income," "Gathering, transportation and other," "General and administrative," "Interest expense and other" and "Depletion, depreciation and amortization."

On July 1, 2011, the Company closed transactions with KM Gathering and Eagle Gathering, in which the Company transferred (i) its remaining 50% membership interest in KinderHawk to KM Gathering and (ii) a 25% interest in EagleHawk to Eagle Gathering, in exchange for aggregate cash consideration of approximately $836 million. Upon the closing of the transfer of the remaining 50% interest in KinderHawk, the Company no longer includes KinderHawk's revenues and expenses on the unaudited condensed consolidated statements of operations. In accordance with ASC 360-20, the historical cost of the Haynesville Shale gas gathering system is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. As a result of the transfer on July 1, 2011, the Company recorded an increase in its financing obligation associated with KinderHawk of approximately $743.0 million.

EagleHawk engages in the natural gas midstream business in the Eagle Ford Shale in South Texas. EagleHawk holds the Company's gathering and treating assets and business serving the Company's Hawkville and Black Hawk fields in the Eagle Ford Shale. The Company's transfer of a 25% interest in EagleHawk, on July 1, 2011, is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. As a result of the failed sale the Company accounts for the continued operations of the gas gathering systems and reflects a financing obligation, representing the proceeds received, under the financing method of real estate accounting. Under the financing method, the historical cost of the Eagle Ford Shale gas gathering systems transferred to Eagle Hawk is carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. The financing obligation is recorded on the unaudited condensed consolidated balance sheet in "Payable on financing

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

11. SEGMENTS (Continued)

arrangements," in the amount of approximately $93 million. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as the Company delivers its production through the Eagle Ford Shale gathering and treating systems. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. Additionally the Company records EagleHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, and expenses on the unaudited condensed consolidated statements of operations in "Midstream revenues," "Taxes other than income," "Gathering, transportation and other," "General and administrative," "Interest expense and other" and "Depletion, depreciation and amortization."

On January 7, 2011, the Company sold its midstream operations in the Fayetteville Shale. The revenues and expenses associated with the Fayetteville Shale midstream operations have been classified as discontinued operations in the condensed unaudited consolidated statements of operations for all periods presented, in the line item "Loss from discontinued operations, net of income taxes." See Note 12, "Discontinued Operations," for further discussion of the presentation of the Company's Fayetteville Shale midstream assets as discontinued operations. The segment information presented in the tables below is amounts related to continuing operations.

The Company's oil and natural gas segment and midstream segment revenues and expenses include intersegment transactions, which are generally based on transactions made at market-related rates. Consolidated revenues and expenses reflect the elimination of all intercompany transactions. The accounting policies of the reporting segments are the same as those described in the "Summary of Significant Events and Accounting Policies" in Note 1 of the 2010 Annual Report on Form 10-K and Amendment No. 1 to the Annual Report on Form 10-K.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

11. SEGMENTS (Continued)

Summarized financial information concerning the Company's reportable segments is shown in the following table (in thousands):

			Oil and Natural Gas			Midstream			Intersegment Eliminations			Consolidated Total

For the three months ended September 30, 2011:
	Revenues		$	497,204		$	5,019		$	—		$	502,223
	Intersegment revenues			—			7,400			(7,400	)		—

		Total revenues	$	497,204		$	12,419		$	(7,400	)	$	502,223
	Gathering, transportation and other			(55,264	)		(8,359	)		7,400			(56,223	)
	Depletion, depreciation and amortization			(226,037	)		(5,689	)		—			(231,726	)
	General and administrative			(129,900	)		(3,082	)		—			(132,982	)
	Interest (expense) income and other			(71,539	)		(37,119	)		—			(108,658	)
	Income (loss) from continuing operations before income taxes		$	169,216		$	(42,220	)	$	—		$	126,996
	*Total assets(1)***		$	8,152,541		$	1,849,570		$	—		$	10,002,111
	*Payable on financing arrangements(2)***		$	—		$	1,774,673		$	—		$	1,774,673
	Capital expenditures		$	(696,968	)	$	(83,531	)	$	—		$	(780,499	)
For the three months ended September 30, 2010:
	Revenues		$	403,309		$	4,860		$	—		$	408,169
	Intersegment revenues			—			12,795			(12,795	)		—

		Total revenues	$	403,309		$	17,655		$	(12,795	)	$	408,169
	Gathering, transportation and other			(33,592	)		(3,250	)		12,795			(24,047	)
	Depletion, depreciation and amortization			(105,750	)		(4,237	)		—			(109,987	)
	General and administrative			(36,022	)		(4,952	)		—			(40,974	)
	Interest (expense) income and other			(111,145	)		(14,713	)		—			(125,858	)
	Income (loss) from continuing operations before income taxes		$	110,244		$	(9,659	)	$	—		$	100,585
	Total assets		$	6,978,115		$	1,006,001		$	(29,855	)	$	7,954,261
	*Payable on financing arrangements(2)***		$	—		$	928,412		$	—		$	928,412
	Capital expenditures		$	(535,301	)	$	(39,389	)	$	—		$	(574,690	)

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

11. SEGMENTS (Continued)

			Oil and Natural Gas			Midstream			Intersegment Eliminations			Consolidated Total

For the nine months ended September 30, 2011:
	Revenues		$	1,581,171		$	12,167		$	—		$	1,593,338
	Intersegment revenues			—			53,357			(53,357	)		—

		Total revenues	$	1,581,171		$	65,524		$	(53,357	)	$	1,593,338
	Gathering, transportation and other			(136,279	)		(16,814	)		53,357			(99,736	)
	Depletion, depreciation and amortization			(573,527	)		(16,980	)		—			(590,507	)
	General and administrative			(212,850	)		(11,613	)		—			(224,463	)
	Interest (expense) income and other			(207,021	)		(76,276	)		—			(283,297	)
	Income (loss) from continuing operations before income taxes		$	259,488		$	(58,238	)	$	—		$	201,250
	*Total assets(1)***		$	8,152,541		$	1,849,570		$	—		$	10,002,111
	*Payable on financing arrangements(2)***		$	—		$	1,774,673		$	—		$	1,774,673
	Capital expenditures		$	(2,393,505	)	$	(196,166	)	$	—		$	(2,589,671	)
For the nine months ended September 30, 2010:
	Revenues		$	1,181,191		$	16,429		$	—		$	1,197,620
	Intersegment revenues			—			52,742			(52,742	)		—

		Total revenues	$	1,181,191		$	69,171		$	(52,742	)	$	1,197,620
	Gathering, transportation and other			(116,163	)		(13,125	)		52,742			(76,546	)
	Depletion, depreciation and amortization			(306,961	)		(9,132	)		—			(316,093	)
	General and administrative			(98,931	)		(17,572	)		—			(116,503	)
	Interest (expense) income and other			(238,009	)		(16,936	)		—			(254,945	)
	Income from continuing operations before income taxes		$	304,249		$	10,965		$	—		$	315,214
	Total assets		$	6,978,115		$	1,006,001		$	(29,855	)	$	7,954,261
	*Payable on financing arrangements(2)***		$	—		$	928,412		$	—		$	928,412
	Capital expenditures		$	(1,752,624	)	$	(202,194	)	$	—		$	(1,954,818	)

(1): The Company divested its Fayetteville Shale midstream operations on January 7, 2011. Gas gathering systems and equipment of approximately $155 million and related accumulated depreciation of approximately $11 million associated with the Fayetteville Shale midstream assets, were classified as "Assets held for sale" in the unaudited condensed consolidated balance sheet at December 31, 2010. "Assets held for sale" were recorded at the lesser of the carrying amount or the fair value less costs to sell, which resulted in a write down of approximately $69.7 million that was recorded in the year ended December 31, 2010. "Assets held for sale" were approximately $74 million as of December 31, 2010. See Note 1, "Financial Statement Presentation," and Note 2, "Acquisitions and Divestitures."
(2): Includes current portion of $16.8 million and $6.8 million, for the periods ended September 30, 2011 and 2010, respectively.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

12. DISCONTINUED OPERATIONS

On December 22, 2010, the Company completed the sale of its interest in natural gas properties and other operating property and equipment in the Fayetteville Shale. On January 7, 2011, the Company completed the sale of its midstream assets in the Fayetteville Shale. For all periods presented, the Company classified the operations associated with the Fayetteville Shale gas gathering systems and equipment, which are part of the Company's midstream operations segment, and the Fayetteville Shale other operating property and equipment, which are part of the Company's oil and natural gas production segment, as "Loss from discontinued operations, net of income taxes" in the unaudited condensed consolidated statements of operations.

On March 1, 2011, the Company completed the sale of its interest in the Buffalo Hump Ranch located in Van Buren County, Arkansas for approximately $2.1 million in cash. A loss on the sale of approximately $4.3 million before income taxes, $2.7 million after taxes was recorded during the first quarter of 2011 in "Loss from discontinued operations, net of income taxes" in the unaudited condensed consolidated statements of operations. The transaction had an effective date of March 1, 2011.

As of December 31, 2010, the Fayetteville Shale midstream assets were classified as "Assets held for sale" on the Company's unaudited condensed consolidated balance sheet. "Assets held for sale" were recorded at the lesser of the carrying amount or the fair value less costs to sell, which resulted in a write down of the carrying amount of approximately $69.7 million in the year ended December 31, 2010. In conjunction with the sale of the other operating property and equipment, the Company recorded a loss of approximately $0.5 million in the year ended December 31, 2010.

The following table contains summarized income statement information for the Fayetteville Shale midstream operations and other operating property and equipment for the periods indicated (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,

	2011			2010			2011			2010
Operating revenues	$	—		$	2,229		$	153		$	7,140
Operating expenses		—			3,589			43			9,588
Loss on sale		(67	)		—			(5,289	)		—

Loss from discontinued operations, before income taxes		(67	)		(1,360	)		(5,179	)		(2,448	)
Income tax benefit		25			532			1,978			955

Loss from discontinued operations, net of income taxes	$	(42	)	$	(828	)	$	(3,201	)	$	(1,493	)

13. RESTATEMENT

On May 21, 2010, the Company contributed its Haynesville Shale gathering and treating business in Northwest Louisiana to a joint venture, KinderHawk, Kinder Morgan contributed approximately $917 million in cash, which was distributed to the Company as consideration for 50% of the Haynesville Shale gathering and treating system. In connection with the transaction the Company entered into a gathering agreement with KinderHawk which requires the Company to deliver natural

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

13. RESTATEMENT (Continued)

gas to the operator of the gathering and treating system, KinderHawk, from dedicated lease acreage for the life of the dedicated lease acreage, or approximately 30 years, and includes a minimum delivery commitment over a five-year period. Upon completion of the transaction both the Company and Kinder Morgan held a 50% membership interest in KinderHawk. The Company originally accounted for the transaction as a partial sale for which the Company deferred a gain of approximately $719.4 million and recorded its 50% membership interest in KinderHawk as an equity method investment. The deferred gain was to be recognized as commitments associated with KinderHawk, consisting of a capital commitment of approximately $200 million callable during a two-year period and a five-year delivery commitment were settled. Income and distributions related to the venture were recorded as adjustments to the Company's equity method investment.

The Company subsequently determined that the KinderHawk joint venture transaction should have been accounted for and disclosed in accordance with ASC 360-20. ASC 360-20 establishes standards for recognition of profit on all real estate sales transactions other than retail land sales, without regard to the nature of the seller's business. In making the determination of whether a transaction qualifies, in substance, as a sale of real estate, the nature of the entire real estate being sold is considered, including the land plus the property improvements and the integral equipment. The Haynesville Shale gathering and treating system, consists of right of ways, pipelines and processing facilities. Due to the gathering agreement which constitutes extended continuing involvement under ASC 360-20, it has been determined that the contribution of the Company's Haynesville Shale gathering and treating system to form KinderHawk should be accounted for as a failed sale of in substance real estate. As a result of the failed sale the Company would account for the continued operations of the gas gathering system and reflect a financing obligation, representing the proceeds received, under the financing method of real estate accounting. Under the financing method, the historical cost of the Haynesville Shale gas gathering system contributed to KinderHawk should have continued to be carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets in "Gas gathering systems and equipment" and depreciated over the remaining useful life of the assets. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $917 million. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as the Company delivers natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon the Company's weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value will be reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. Any obligation remaining once the gathering agreement expires will be reversed, resulting in the recognition of a gain. Additionally the Company records KinderHawk's revenues, net of eliminations for intercompany amounts associated with gathering and treating services provided to the Company, and expenses on the unaudited condensed consolidated statements of operations in "Midstream revenues," "Taxes other than income," "Gathering, transportation and other," "General and administrative," "Interest expense and other" and "Depletion, depreciation and amortization."

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

13. RESTATEMENT (Continued)

The following table presents the line item adjustments for the unaudited condensed consolidated statements of operations for the three months ended September 30, 2010 which are impacted by the restatement (in thousands):

	Three Months Ended September 30, 2010

	Amount as Previously Reported			Adjustments			Restated Amount
Midstream revenues(1)	$	3,644		$	1,216		$	4,860
Total operating revenues(1)		406,953			1,216			408,169
Taxes other than income expense(1)		(3,217	)		222			(2,995	)
Gathering, transportation and other expense(1)		48,041			(23,994	)		24,047
General and administrative expense(1)		40,207			767			40,974
Depletion, depreciation and amortization expense(1)		106,478			3,509			109,987
Total operating expenses(1)		349,114			(19,496	)		329,618
Amortization of deferred gain		59,472			(59,472	)		—
Income from operations(1)		117,311			(38,760	)		78,551
Interest expense and other		(110,714	)		(15,144	)		(125,858	)
Equity investment income		8,572			(8,572	)		—
Total other income (expenses)		45,750			(23,716	)		22,034
Income from continuing operations before income taxes(1)		163,061			(62,476	)		100,585
Income tax provision(1)		(63,537	)		24,137			(39,400	)
Income from continuing operations, net of income taxes(1)		99,524			(38,339	)		61,185
Loss from discontinued operations, net of income taxes(1)		(843	)		15			(828	)
Net income	$	98,681		$	(38,324	)	$	60,357
Net income (loss) per share:
Basic:
Continuing operations	$	0.33		$	(0.13	)	$	0.20
Total	$	0.33		$	(0.13	)	$	0.20
Diluted:
Continuing operations	$	0.33		$	(0.13	)	$	0.20
Total	$	0.33		$	(0.13	)	$	0.20
Weighted average shares outstanding:
Diluted		301,941			(6	)		301,935

(1): Amounts previously reported have been adjusted to conform to the current presentation for discontinued operations associated with the sale of the Fayetteville Shale midstream assets. These adjustments include a $2.2 million reduction in Midstream revenues and Total operating revenues and a $3.6 million reduction in Total operating expenses comprised of reductions of $0.03 million in Taxes other than income expense, $2.0 million in Gathering, Transportation and other expense, $0.2 million in General and administrative expense and $1.3 million in Depletion, depreciation and amortization expense. See further discussion in Note 12, "Discontinued Operations."

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

13. RESTATEMENT (Continued)

The following table presents the line item adjustments for the unaudited condensed consolidated statements of operations for the nine months ended September 30, 2010 which are impacted by the restatement (in thousands):

	Nine Months Ended September 30, 2010

	Amount as Previously Reported			Adjustments			Restated Amount
Midstream revenues(1)	$	14,670		$	1,759		$	16,429
Total operating revenues(1)		1,195,861			1,759			1,197,620
Taxes other than income expense(1)		14,654			371			15,025
Gathering, transportation and other expense(1)		109,496			(32,950	)		76,546
General and administrative expense(1)		115,341			1,162			116,503
Depletion, depreciation and amortization expense(1)		311,101			4,992			316,093
Total operating expenses(1)		999,856			(26,425	)		973,431
Amortization of deferred gain		123,839			(123,839	)		—
Income from operations(1)		319,844			(95,655	)		224,189
Interest expense and other		(235,093	)		(19,852	)		(254,945	)
Equity investment income		10,619			(10,619	)		—
Total other income (expenses)		121,496			(30,471	)		91,025
Income from continuing operations before income taxes(1)		441,340			(126,126	)		315,214
Income tax provision(1)		(171,512	)		48,671			(122,841	)
Income from continuing operations, net of income taxes(1)		269,828			(77,455	)		192,373
Loss from discontinued operations, net of income taxes(1)		(1,517	)		24			(1,493	)
Net income	$	268,311		$	(77,431	)	$	190,880
Net income (loss) per share:
Basic:
Continuing operations	$	0.90		$	(0.26	)	$	0.64
Discontinued operations		(0.01	)		0.01			—
Total	$	0.89		$	(0.25	)	$	0.64
Diluted:
Continuing operations	$	0.89		$	(0.26	)	$	0.63
Total	$	0.89		$	(0.26	)	$	0.63
Weighted average shares outstanding:
Diluted		302,541			(5	)		302,536

(1): Amounts previously reported have been adjusted to conform to the current presentation for discontinued operations associated with the sale of the Fayetteville Shale midstream assets. These adjustments include a $7.1 million reduction in Midstream revenues and Total operating revenues and a $9.6 million reduction in Total operating expenses comprised of reductions of $0.2 million in Taxes other than income expense, $4.8 million in Gathering, Transportation and other expense, $0.6 million in General and administrative expense and $4.0 million in Depletion, depreciation and amortization expense. See further discussion in Note 12, "Discontinued Operations."

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

13. RESTATEMENT (Continued)

The following table presents the line item adjustments for the unaudited condensed consolidated balance sheet as of December 31, 2010 which are impacted by the restatement (in thousands):

	December 31, 2010

	Amount as Previously Reported			Adjustments			Restated Amount
Gas gathering systems and equipment	$	150,372		$	443,016		$	593,388
Gross other operating property and equipment		205,687			443,016			648,703
Less—accumulated depreciation		(19,194	)		(8,441	)		(27,635	)
Net other operating property and equipment		186,493			434,575			621,068
Deferred income taxes—noncurrent asset		258,570			57,976			316,546
Equity investment		217,240			(217,240	)		—
Total assets		7,624,442			275,311			7,899,753
Deferred income taxes—current liability		48,499			(2,684	)		45,815
Payable on financing arrangement—current		—			7,052			7,052
Total current liabilities		857,323			4,368			861,691
Deferred gain on sale		564,121			(564,121	)		—
Payable on financing arrangement—noncurrent		—			933,811			933,811
Accumulated deficit		(1,087,625	)		(98,747	)		(1,186,372	)
Total stockholders' equity		3,544,286			(98,747	)		3,445,539
Total liabilities and stockholders' equity	$	7,624,442		$	275,311		$	7,899,753

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

13. RESTATEMENT (Continued)

The following table presents the line item adjustments for the unaudited condensed consolidated statement of cash flows for the nine months ended September 30, 2010 which are impacted by the restatement (in thousands):

	Nine Months Ended September 30, 2010

	Amount as Previously Reported			Adjustments			Restated Amount
Cash flows from operating activities:
Net income	$	268,311		$	(77,431	)	$	190,880
Adjustments to reconcile net income to net cash provided by operating activities:
Depletion, depreciation and amortization		315,061			4,858			319,919
Income tax provision		170,581			(48,695	)		121,886
Amortization of deferred gain		(123,839	)		123,839			—
Equity investment income		(10,619	)		10,619			—
Distributions from equity affiliate		13,190			(13,190	)		—
Cash flows from investing activities:
Proceeds received from the contribution of the Haynesville gas gathering systems		921,408			(921,408	)		—
Other operating property and equipment capital expenditures		(212,137	)		(10,974	)		(223,111	)
Contributions to equity affiliate		(10,974	)		10,974			—
Net cash used in investing activities		(249,311	)		(921,408	)		(1,170,719	)
Cash flows from financing activities:
Increase in payable on financing arrangement		—			921,408			921,408
Net cash (used in) provided by financing activities	$	(110,461	)	$	921,408		$	810,947

14. SUBSEQUENT EVENTS

Senior Credit Agreement Reduction

Effective October 3, 2011, the Company reduced its borrowing capacity under the Senior Credit Agreement from $2.5 billion to $25 million. As of September 30, 2011, the Company had no outstanding borrowings under the Senior Credit Agreement and had approximately $24.5 million outstanding letters of credit with various customers, vendors and others.

The Senior Credit Agreement contains customary financial and other covenants, including minimum working capital levels (the ratio of current assets plus the unused commitment under the Senior Credit Agreement to current liabilities) of not less than 1.0 to 1.0 and minimum coverage of interest expenses (EBITDA to Interest Expense, each as defined in the Senior Credit Agreement) of not less than 2.5 to 1.0. In addition, the Company is subject to covenants limiting dividends and other restricted payments, transactions with affiliates, incurrence of debt, changes of control, asset sales, and liens on properties. Effective September 27, 2011, the Company's compliance obligations with respect to the aforementioned minimum working capital level and minimum coverage of interest expense covenants, as well as the Company's compliance obligations with respect to certain other covenants in the Senior Credit Facility including reserve report and other information delivery, were suspended until March 31, 2012.

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PETROHAWK ENERGY CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) (Continued)

14. SUBSEQUENT EVENTS (Continued)

EagleHawk Revolving Credit Agreement

In November 2011, EagleHawk repaid all outstanding borrowings under the EagleHawk Revolving Credit Agreement and terminated the facility.

Senior Note Repurchases

Due to the change of control resulting from the acquisition of the Company by BHP Billiton Limited, the Company initialized offers to repurchase the 2014 and 2015 Notes, in accordance with the 2014 and 2015 Indentures, respectively. The offer to repurchase the 2014 and 2015 Notes expired on November 9, 2011. On November 14, 2011, the Company paid principal and interest of $10.8 million to repurchase a portion of the 2014 Notes and $0.4 million to repurchase a portion of the 2015 Notes at the request of the bondholders. The principal amounts paid were classified as current debt at September 30, 2011.

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Item 2. Management's Narrative Analysis of Results of Operations

The following discussion is intended to assist in understanding our results of operations for the nine months ended September 30, 2011 and 2010 and should be read in conjunction with our unaudited condensed consolidated financial statements and the notes thereto included in this Quarterly Report on Form 10-Q and with the consolidated financial statements, notes and management's discussion and analysis included in our Annual Report on Form 10-K, as amended, for the year ended December 31, 2010.

Statements in this discussion may be forward-looking. These forward-looking statements involve risks and uncertainties, including those discussed below, which could cause actual results to differ from those expressed.

Overview

We are an oil and natural gas company engaged in the exploration, development and production of predominately natural gas properties located in the United States. As further discussed in Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 1 "Financial Statement Presentation", on August 25, 2011, BHP Billiton Limited, a corporation organized under the laws of Victoria, Australia (BHP Billiton Limited), acquired 100% of our outstanding shares of common stock through the merger of a wholly owned subsidiary of BHP Billiton Petroleum (North America) Inc. (the Parent), a Delaware corporation and wholly owned subsidiary of BHP Billiton Limited, with and into Petrohawk, with Petrohawk continuing as the surviving entity. At the date of this report, Petrohawk remains an indirect, wholly owned subsidiary of BHP Billiton Limited.

Our business is comprised of an oil and natural gas production segment and a midstream operations segment. We organize our oil and natural gas production operations into two principal regions: the Mid-Continent, which includes our Louisiana, East Texas and West Texas properties; and the Western, which includes our South Texas properties. Our midstream operations segment consists of our gathering subsidiary, Hawk Field Services, LLC (Hawk Field Services) which was formed to integrate our active drilling program with activities of third parties and to develop additional gathering and treating capacity. Hawk Field Services currently serves the Eagle Ford Shale in South Texas through our investment in EagleHawk Field Services LLC (EagleHawk).

Our average daily oil and natural gas production increased 46% in the first nine months of 2011 compared to the same period in the prior year. During the first nine months of 2011, we averaged 940 million cubic feet of natural gas equivalent (Mmcfe) per day (Mmcfe/d) compared to average daily production of 645 Mmcfe/d during the first nine months of 2010. The increase in production compared to the prior year period is driven by our drilling successes in the Haynesville and Eagle Ford Shales as our production gains have more than made up for production sold during 2010. During the first nine months of 2011, we drilled or participated in the drilling of 353 gross wells (150 net wells), of which 352 gross (149.4 net) were successful, resulting in a success rate of 99%

Our financial results depend upon many factors, but are largely driven by the volume of our oil and natural gas production and the price that we receive for that production. Our production volumes will decline as reserves are depleted unless we expend capital in successful development and exploration activities or acquire properties with existing production. The amount we realize for our production depends predominantly upon commodity prices and our related commodity price hedging activities, which are affected by changes in market demand and supply, as impacted by overall economic activity, weather, pipeline capacity constraints, inventory storage levels, basis differentials and other factors. Accordingly, finding and developing oil and natural gas reserves at economical costs is critical to our long-term success.

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Our 2011 capital budget emphasizes the development of our extensive condensate-rich properties, largely in the Eagle Ford Shale, and shifts away from dry gas development in our core areas. Our drilling and completion budget for 2011 is based on our current view of market conditions, our objective of accelerating development of certain areas of our Eagle Ford Shale position, and our desire to reduce capital allocated to pure natural gas drilling once our Haynesville Shale lease-holding activities are effectively completed. We are currently on track to exceed our 2011 capital budget of $2.85 billion but we expect any shortfalls between capital spending and cash flows from operations to be funded by BHP Billiton Limited through capital contributions. We are the process of updating our capital budget for the remainder of 2011 as well as for 2012. During late 2010 and early 2011, we began acquiring acreage in the Permian Basin of West Texas. We have acquired or committed to acquire approximately 400,000 net acres in the Midland and Delaware Basins.

On July 1, 2011, we along with our subsidiaries Hawk Field Services and EagleHawk, closed previously announced transactions with KM Gathering LLC (KM Gathering) and KM Eagle Gathering LLC (Eagle Gathering), each of which is an affiliate of Kinder Morgan Energy Partners, L.P. (Kinder Morgan), a publicly traded master limited partnership, in which Hawk Field Services transferred (i) its remaining 50% membership interest in KinderHawk Field Services LLC (KinderHawk) to KM Gathering and (ii) a 25% interest in EagleHawk to Eagle Gathering, in exchange for aggregate cash consideration of approximately $836 million. In conjunction with the closing of these transactions, our remaining capital commitment to KinderHawk was relieved. This remaining capital commitment was approximately $41.4 million as of July 1, 2011. Our commitment to deliver certain minimum annual quantities of natural gas through the Haynesville gathering system through May 2015 was not relieved in the transfer of our remaining 50% membership interest in KinderHawk.

EagleHawk, which is managed by Hawk Field Services, engages in the natural gas midstream business in the Eagle Ford Shale in South Texas. At the closing of the transactions, EagleHawk holds our gathering and treating assets and business serving our Hawkville and Black Hawk fields in the Eagle Ford Shale. EagleHawk has agreements with us covering gathering and treating and pursuant to which we dedicate our production from our Eagle Ford Shale leases.

On March 11, 2011 an independent third party exercised their option to acquire a portion of our interest in oil and natural gas properties in the Black Hawk field of the Eagle Ford Shale. Proceeds from this transaction were approximately $74 million and were recorded as a reduction to the carrying value of our full cost pool with no gain or loss recorded. The effective date of the transaction was March 1, 2011. On January 7, 2011, we completed the sale of our midstream assets in the Fayetteville Shale for approximately $75 million in cash, before customary closing adjustments. The transaction had an effective date of October 1, 2010.

On May 20, 2011, we issued $600 million aggregate principal amount of our 6.25% senior notes due 2019 (the 2019 Notes). The net proceeds from the sale of the 2019 Notes were approximately $589 million (after deducting offering fees and expenses). The proceeds from the 2019 Notes were utilized to repay borrowings outstanding under our senior revolving credit facility and for working capital for general corporate purposes.

On January 31, 2011, we completed the issuance of an additional $400 million aggregate principal amount of our 7.25% senior notes due 2018 (the additional 2018 Notes). The net proceeds from the sale of the additional 2018 Notes were approximately $400.5 million (after deducting offering fees and expenses). A portion of the proceeds of the additional 2018 Notes were utilized to redeem our 7.125% $275 million senior notes due 2012 (the 2012 Notes).

On July 1, 2011, we amended our Senior Credit Agreement, the Fifth Amended and Restated Senior Revolving Credit Agreement, as amended on November 8, 2010, December 22, 2010 and April 29, 2011, by entering into the Fourth Amendment to the Fifth Amended and Restated Senior Revolving Credit Agreement (the Fourth Amendment), among us, each of the lenders from time to

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time party thereto (the Lenders), BNP Paribas, as administrative agent for the Lenders, Bank of America, N.A. and Bank of Montreal as co-syndication agents for the Lenders, and JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A., as co-documentation agents for the Lenders. Among other things, the Fourth Amendment permitted Hawk Field Services to convey its Eagle Ford Shale gathering and treating business in South Texas to EagleHawk; transfer a 25% equity interest in EagleHawk to Kinder Morgan; enter into and abide by the terms of the operative documents governing the formation and operation of EagleHawk, and reaffirmed the oil and gas component of our borrowing base under the Senior Credit Agreement at $1.8 billion, while reducing to zero the midstream component of our borrowing base. The portion of the Senior Credit Agreement's borrowing base which relates to our oil and natural gas properties is redetermined on a semi-annual basis (with us and the lenders each having the right to one annual interim unscheduled redetermination) and adjusted based on our oil and natural gas properties, reserves, other indebtedness and other relevant factors. Our ability to utilize the full amount of our borrowing capacity is influenced by a variety of factors, including redeterminations of our borrowing base, and covenants under our Senior Credit Agreement and our senior unsecured debt indentures. Additionally, our borrowing base is subject to a reduction equal to the product of $0.25 multiplied by the stated principal amount (without regard to any initial issue discount) of any unsecured senior or senior subordinated notes that we may issue. As of September 30, 2011, we had no borrowings outstanding under the Senior Credit Agreement and approximately $1.8 billion of additional borrowing capacity available. Effective October 3, 2011, we reduced the borrowing capacity under our Senior Credit Agreement from $2.5 billion to $25 million. Refer to Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 14, "Subsequent Events" for more details.

Our Senior Credit Agreement contains customary financial and other covenants, including minimum working capital levels (the ratio of current assets plus the unused commitment under the Senior Credit Agreement to current liabilities) of not less than 1.0 to 1.0 and minimum coverage of interest expenses (as defined in the Senior Credit Agreement) of not less than 2.5 to 1.0. We are subject to additional covenants limiting dividends and other restricted payments, transactions with affiliates, incurrence of debt, changes of control, asset sales, and liens on properties. Effective September 27, 2011, our compliance obligations with respect to the aforementioned minimum working capital level and minimum coverage of interest expense covenants, as well as our compliance obligations with respect to certain other covenants in the Senior Credit Facility including reserve report and other information delivery, were suspended until March 31, 2012. Additionally, the indentures governing our senior unsecured debt contain covenants limiting our ability to incur additional indebtedness, including borrowings under our Senior Credit Agreement, unless we meet one of two alternative tests. The first test applies to all indebtedness and requires that after giving effect to the incurrence of additional debt the ratio of our adjusted consolidated EBITDA (as defined in our indentures) to our adjusted consolidated interest expense over the trailing four fiscal quarters will be, under the most restrictive indentures, at least 2.5 to 1.0. The second test applies only to borrowings under our Senior Credit Agreement that do not meet the first test and limits these borrowings to the greater of a fixed sum of, under the most restrictive indentures, $1 billion and 30% of our adjusted consolidated net tangible assets (as defined in all of our indentures), which is largely calculated based upon the discounted future net revenues from our proved oil and natural gas reserves as of the end of each year.

Our cash flows are subject to a number of variables including our level of oil and natural gas production and commodity prices, as well as various economic conditions that have historically affected the oil and natural gas industry. If natural gas prices remain at their current levels for a prolonged period of time or if oil and natural gas prices decline, our ability to fund our capital expenditures, reduce debt, meet our financial obligations and become profitable may be materially impacted. Our primary sources of capital and liquidity have historically been internally generated cash flows from operations, proceeds from asset sales and availability our Senior Credit Agreement. Our future capital

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resources and liquidity will be from internally generated cash flows from operations and funding from our Parent.

Contractual Obligations

We have no material changes in our long-term commitments associated with our capital expenditure plans or operating agreements other than those described below. Our level of capital expenditures will vary in future periods depending on the success we experience in our acquisition, development and exploration activities, oil and natural gas price conditions and other related economic factors. Currently no sources of liquidity or financing are provided by off-balance sheet arrangements or transactions with unconsolidated, limited-purpose entities. The following table summarizes our contractual obligations and commitments as of September 30, 2011:

	Total Obligation Amount(1)

	(in thousands)
Gathering and transportation commitments	$	2,363,637	18
Drilling rig commitments		332,572	4
Non-cancelable operating leases		35,350	7
Pipeline and well equipment obligations		71,080	1
Various contractual commitments (including, among other things, rental equipment obligations, obtaining and processing seismic data and fracture stimulation services)		74,650	2

Total commitments	$	2,877,289

(1): On May 21, 2010, we created a joint venture with Kinder Morgan, KinderHawk, which engages in the natural gas midstream business in Northwest Louisiana, focused on the Haynesville and Lower Bossier Shales. As part of this transaction, we were committed to fund up to an additional $41.4 million, as of June 30, 2011, in capital during 2011 in the event KinderHawk required capital to finance its planned capital expenditures. On July 1, 2011, in conjunction with the closing of the transfer of our remaining 50% membership interest in KinderHawk, the balance of our capital commitment to KinderHawk was relieved. In addition to the capital commitment, we are obligated to deliver to KinderHawk agreed upon minimum annual quantities of natural gas from Petrohawk operated wells producing from the Haynesville and Lower Bossier Shales in North Louisiana through May 2015, or in the alternative, pay an annual true-up fee to KinderHawk if such minimum annual quantities are not delivered. This obligation is not reflected in the amounts shown in the table above. Our obligation to deliver minimum annual quantities of natural gas to KinderHawk through May 2015 remains in effect following the transfer of our remaining 50% membership interest in KinderHawk on July 1, 2011. We pay to KinderHawk negotiated gathering and treating fees, subject to an annual inflation adjustment factor.

One of our gathering and transportation commitments is our obligation to deliver to KinderHawk agreed upon minimum annual quantities of natural gas from our operated wells producing from the Haynesville and Lower Bossier Shales, within specified acreage in Northwest Louisiana through May 2015, or in the alternative, pay an annual true-up fee to KinderHawk if such minimum annual quantities are not delivered. This minimum annual quantities commitment is not included in the table above. Our obligation to deliver minimum annual quantities of natural gas to KinderHawk through

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May 2015 remains in effect following the transfer of our remaining 50% membership interest in KinderHawk on July 1, 2011. The minimum annual quantities per contract year are as follows:

Contract Year		Minimum Annual Quantity (Bcf)

Year 1 (partial)—2010			81.090
Year 2—2011			152.899
Year 3—2012			238.595
Year 4—2013			324.047
Year 5—2014			368.614
Year 6 (partial)—2015			143.066

These volumes represent 50% of our anticipated production from the specified acreage at the time we entered into the contract. Production from this acreage has been significantly in excess of these volumes during 2010 and through the third quarter of 2011, and we have not been obligated to pay a true-up fee to date.

We pay KinderHawk negotiated gathering and treating fees, subject to an annual inflation adjustment factor. The gathering fee is currently equal to $0.34 per thousand cubic feet (Mcf) of natural gas delivered at KinderHawk's receipt points. The treating fee is charged for gas delivered containing more than 2% by volume of carbon dioxide. For gas delivered containing between 2% and 5.5% carbon dioxide, the treating fee is between $0.030 and $0.345 per Mcf, and for gas containing over 5.5% carbon dioxide, the treating fee starts at $0.365 per Mcf and increases on a scale of $0.09 per Mcf for each additional 1% of carbon dioxide content. In the event that annual natural gas deliveries are ever less than the minimum annual quantity per contract year set forth in the table above, our true-up fee obligation would be determined by subtracting the quantity delivered from the minimum annual quantity for the applicable contract year and multiplying the positive difference by the sum of the gathering fee in effect on the last day of such year plus the average monthly treating fees for such year. For example, if the quantity of natural gas delivered in 2011 were 50 Bcf less than the minimum annual quantity for such year and the year-end gathering fee was $0.34 per Mcf and the average treating fee for the period was $0.345 per Mcf, the true-up fee would be $34.3 million.

The KinderHawk joint venture is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. Due to the gathering agreement entered into with the formation of KinderHawk, which constitutes extended continuing involvement under ASC 360-20, it has been determined that the contribution of our Haynesville Shale gathering and treating system to form KinderHawk is accounted for as a failed sale of in substance real estate. See Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 2, "Acquisitions and Divestitures" for more details regarding the KinderHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. As a result of the failed sale, we recorded a financing obligation, representing the proceeds received, under the financing method of real estate accounting. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $1.7 billion. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as we deliver natural gas through the Haynesville Shale gathering and treating system. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon our weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. This obligation is not reflected in the amounts shown in the table above.

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The Company's transfer of a 25% interest in EagleHawk to Kinder Morgan, on July 1, 2011, is accounted for as a failed sale of in substance real estate in accordance with ASC 360-20. Due to the gathering agreements which constitute extended continuing involvement under ASC 360-20, that were either entered into in conjunction with the closing of the EagleHawk transaction or assigned to EagleHawk at the closing of the transaction, it has been determined that the transfer of our Eagle Ford Shale gathering and treating systems to EagleHawk is accounted for as a failed sale of in substance real estate. See Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 2, "Acquisitions and Divestitures" for more details regarding the EagleHawk joint venture arrangement and for discussion of the accounting treatment related to the arrangement. As a result of the failed sale, we recorded a financing obligation, representing the proceeds received, under the financing method of real estate accounting. The financing obligation is recorded on the unaudited condensed consolidated balance sheets in "Payable on financing arrangements," in the amount of approximately $93 million. Reductions to the obligation and the non cash interest on the obligation are tied to the gathering and treating services, as we deliver our production through the Eagle Ford Shale gathering and treating systems. Interest and principal are determined based upon the allocable income to Kinder Morgan, and interest is limited up to an amount that is calculated based upon our weighted average cost of debt as of the date of the transaction. Allocable income in excess of the calculated value is reflected as reductions of principal. Interest is recorded in "Interest expense and other" on the unaudited condensed consolidated statements of operations. This obligation is not reflected in the amounts shown in the table above.

The balance of our financing obligation as of September 30, 2011, was approximately $1.8 billion, of which approximately $16.8 million was classified as current.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations are based upon the unaudited condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. Preparation of these unaudited condensed consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses. There have been no material changes to our critical accounting policies from those described in our Annual Report on Form 10-K, as amended, for the year ended December 31, 2010.

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Results of Operations

Nine Months Ended September 30, 2011 and 2010

We reported income from continuing operations, net of income taxes of $127.7 million for the nine months ended September 30, 2011 compared to income from continuing operations, net of income taxes of $192.4 million for the same period in 2010, resulting in a decrease of $64.7 million. The following table summarizes key items of comparison and their related change for the periods indicated.

			Nine Months Ended September 30,

In thousands (except per unit and per Mcfe amounts)			2011			2010			Change
Income from continuing operations, net of income taxes			$	127,679		$	192,373		$	(64,694	)
Operating revenues:
	Oil and natural gas			1,285,225			820,753			464,472
	Marketing			295,946			360,438			(64,492	)
	Midstream			12,167			16,429			(4,262	)
Operating expenses:
	Marketing			322,266			392,984			(70,718	)
	Production:
		Lease operating		43,670			49,573			(5,903	)
		Workover and other		12,047			6,707			5,340
	Taxes other than income			48,142			15,025			33,117
	Gathering, transportation and other:
		Oil and natural gas		82,922			63,421			19,501
		Midstream		16,814			13,125			3,689
	General and administrative:
		General and administrative		171,260			99,465			71,795
		Stock-based compensation		53,203			17,038			36,165
	Depletion, depreciation and amortization:
		Depletion—Full cost		565,109			302,389			262,720
		Depreciation—Midstream		16,592			9,011			7,581
		Depreciation—Other		7,307			3,172			4,135
		Accretion expense		1,499			1,521			(22	)
Other income (expenses):
	Net gain on derivative contracts			232,040			345,970			(113,930	)
	Interest expense and other			(283,297	)		(254,945	)		(28,352	)
Income from continuing operations before income taxes
	Oil and natural gas			259,488			304,249			(44,761	)
	Midstream			(58,238	)		10,965			(69,203	)
Income tax provision				(73,571	)		(122,841	)		49,270
Production:
Natural gas—Mmcf				226,907			169,397			57,510
Crude oil—MBbl				3,069			756			2,313
Natural gas liquids—MBbl				1,886			373			1,513
Natural gas equivalent—Mmcfe(1)				256,637			176,171			80,466
Average daily production—Mmcfe(1)				940			645			295
*Average price per unit(2)***:
Natural gas price—Mcf			$	4.06		$	4.43		$	(0.37	)
Crude oil price—Bbl				86.46			74.17			12.29
Natural gas liquids price—Bbl				49.12			35.66			13.46
Natural gas equivalent price—Mcfe(1)				4.98			4.65			0.33
Average cost per Mcfe:
Production:
	Lease operating			0.17			0.28			(0.11	)
	Workover and other			0.05			0.04			0.01
Taxes other than income				0.19			0.09			0.10
Gathering, transportation and other:
	Oil and natural gas			0.32			0.36			(0.04	)
	Midstream			0.07			0.07			—
General and administrative:
	General and administrative			0.67			0.56			0.11
	Stock-based compensation			0.21			0.10			0.11
Depletion				2.20			1.72			0.48

(1): Oil and natural gas liquids are converted to equivalent gas production using a 6:1 equivalent ratio. This ratio does not assume price equivalency and given price differentials, the price for a barrel of oil equivalent for natural gas may differ significantly from the price for a barrel of oil.
(2): Amounts exclude the impact of cash paid/received on settled contracts as we did not elect to apply hedge accounting.

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For the nine months ended September 30, 2011, oil and natural gas revenues increased $464.5 million from the same period in 2010, to $1.3 billion. The increase was primarily due to the increase in our production of 80,466 Mmcfe, or 46% over the nine months ended September 30, 2010, resulting from our drilling successes in resource plays in Louisiana and Texas. Increased production contributed approximately $374 million in revenues for the nine months ended September 30, 2011. Also contributing to this increase was an increase of $0.33 per Mcfe in our realized average price to $4.98 per Mcfe from $4.65 per Mcfe in the prior year period. The increase in realized average prices led to an increase in oil and natural gas revenues of approximately $90 million.

We had marketing revenues of $295.9 million and marketing expenses of $322.3 million for the nine months ended September 30, 2011, resulting in a loss before taxes of $26.4 million as compared to a loss before taxes of $32.6 million for the same period in 2010. Prior to July 1, 2011, a subsidiary of ours purchased and sold our own and third party natural gas produced from wells which we and third parties operate. Effective July 1, 2011, our marketing subsidiary ceased its marketing operations. The revenues and expenses related to these marketing activities were reported on a gross basis as part of operating revenues and operating expenses in historical periods. Marketing revenues were recorded at the time natural gas was physically delivered to third parties at a fixed or index price. Marketing expenses attributable to gas purchases were recorded as our subsidiary took physical title to natural gas and transported the purchased volumes to the point of sale. Subsequent to July 1, 2011, we will no longer be buying and selling third party volumes from wells we and third parties operate. As a result, certain items previously recorded to "Marketing revenues" will no longer be reported while others will now be recorded to "Oil and natural gas revenues" on the unaudited condensed consolidated statements of operations. In addition, certain charges previously reported in "Marketing expenses" will no longer be recorded while others will now be recorded to "Gathering, transportation and other" on the unaudited condensed consolidated statements of operations.

We had gross revenues from our midstream segment of $65.5 million for the nine months ended September 30, 2011 compared to the same period in 2010 of $69.2 million, a decrease of $3.7 million. The decrease in gross revenues from our midstream segment primarily relates to the transfer of our remaining 50% membership interest in KinderHawk on July 1, 2011 to KM Gathering. Prior to the transfer, we recorded KinderHawk's revenues, net of eliminations for intercompany amounts, in accordance with the financing method for a failed sale of in substance real estate. We also record EagleHawk's revenues, net of eliminations for intercompany amounts, in accordance with the financing method. For the nine months ended September 30, 2011, approximately $8.2 million in revenues, after intercompany eliminations, from KinderHawk and EagleHawk were reported in midstream revenues on the unaudited condensed consolidated statements of operations. Gross revenues of $65.5 million also included $53.4 million of inter-segment revenues that were eliminated in consolidation. On a net basis, we had revenues of $12.2 million for the nine months ended September 30, 2011, a decrease of $4.3 million from the prior year. This decrease is also attributed to the transfer of our remaining 50% membership interest in KinderHawk on July 1, 2011.

Lease operating expenses decreased $5.9 million for the nine months ended September 30, 2011 primarily due to our continued cost control efforts as well as the sale of our higher cost properties in 2010. On a per unit basis, lease operating expenses decreased $0.11 per Mcfe to $0.17 per Mcfe in 2011 from $0.28 per Mcfe in 2010. The decrease on a per unit basis is primarily due to the increase in production during 2011 from our resource plays which historically have a lower per unit operating cost. Additionally, the sale of our Terryville, WEHLU, and Fayetteville Shale properties in 2010, contributed to a decrease in costs for the nine months ended September 30, 2011 over the same period in 2010 as these properties historically operated with higher operating costs per unit.

Workover expenses increased $5.3 million for the nine months ended September 30, 2011 compared to the same period in 2010. The increase resulted primarily from an increase in activity due to various projects in the Haynesville Shale.

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Taxes other than income increased $33.1 million for the nine months ended September 30, 2011 as compared to the same period in 2010. The largest components of taxes other than income are production and severance taxes which are generally assessed as either a fixed rate based on production or as a percentage of gross oil and natural gas sales. Our increase in production in the current year was partially offset by severance tax refunds related to drilling incentives for horizontal wells in the Haynesville and Eagle Ford Shales. For the nine months ended September 30, 2011, we recorded severance tax refunds totaling $11.3 million compared to $31.7 million in the prior year. On a per unit basis, excluding the severance tax refunds, taxes other than income decreased $0.04 per Mcfe to $0.23 per Mcfe compared to $0.27 per Mcfe in 2010. This adjusted decrease from the prior year is due to severance tax exemptions related to the drilling incentives as well as a reduction in the Louisiana statutory severance tax rate.

Gathering, transportation and other expense attributable to our oil and natural gas production segment increased $19.5 million for the nine months ended September 30, 2011 as compared to the same period in 2010. On a per unit basis, gathering, transportation and other expenses decreased $0.04 per Mcfe to $0.32 per Mcfe in the nine months ended September 30, 2011 compared to $0.36 per Mcfe for the same period in 2010. This decrease is primarily due to the closing of our KinderHawk and EagleHawk joint ventures with Kinder Morgan. The joint ventures are accounted for in accordance with the financing method for a failed sale of in substance real estate. Gathering and treating fees paid to KinderHawk and EagleHawk are recorded as a reduction in the financing obligation and interest expense on the financing obligation.

Gathering, transportation and other expenses attributable to our midstream operations segment increased $3.7 million for the nine months ended September 30, 2011 compared to the same period in 2010. The increase is primarily due to trucking expenses associated with our midstream operations segment that began in the third quarter of 2011. This increase was partially offset by the transfer of our remaining 50% membership interest in KinderHawk on July 1, 2011. Prior to July 1, 2011, we recorded KinderHawk's expenses in accordance with the financing method for a failed sale of in substance real estate. We also record EagleHawk's expenses in accordance with the financing method. For the nine months ended September 30, 2011, approximately $7.8 million of KinderHawk's and EagleHawk's expenses were reported in "Gathering, transportation and other" on the unaudited condensed consolidated statements of operations.

General and administrative expense for the nine months ended September 30, 2011 increased $71.8 million as compared to the same period in 2010. The increase is primarily attributable to costs associated with the BHP Merger as well as an increase in normal payroll and employee costs associated with increases in our work force as a result of our continued growth. An advisory service fee paid in conjunction with the BHP Merger accounted for $30.2 million of the increase over the prior year period. Payroll and employee costs increased approximately $33 million for items including employee retention and bonus payments and associated payroll taxes related to the BHP Merger and normal increases in payroll and employee costs due to our growth over the prior year. We also incurred professional and legal fees of approximately $8.1 million related to the BHP Merger during the current period.

Stock-based compensation expense for the nine months ended September 30, 2011 increased $36.2 million compared to the same period in 2010. On August 25, 2011, BHP Billiton Limited acquired 100% of our outstanding shares of common stock through the merger of a wholly owned subsidiary of BHP Billiton Petroleum (North America) Inc. with and into us. In conjunction with the merger, we cancelled all unexercised stock options and stock appreciation rights, both vested and unvested, outstanding under our employee and nonemployee equity incentive plans in exchange for a cash payment equal to $38.75 for each share of common stock underlying such option or stock appreciation right, less the applicable exercise price per share and net of withholding taxes, which

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resulted in our recognition of additional stock-based compensation expense in the third quarter of 2011.

Depletion for oil and natural gas properties is calculated using the unit of production method, which depletes the capitalized costs associated with evaluated properties plus future development costs based on the ratio of production volume for the current period to total remaining reserve volume for the evaluated properties. Depletion expense increased $262.7 million for the nine months ended September 30, 2011 from the same period in 2010, to $565.1 million. On a per unit basis, depletion expense increased $0.48 per Mcfe to $2.20 per Mcfe. The increase on a per unit basis is primarily due to our 2010 asset sales as well as the impact of our 2010 and 2011 capital expenditures program.

Depreciation expense associated with our gas gathering systems increased $7.6 million to $16.6 million for the nine months ended September 30, 2011 as compared to the same period in 2010. The increase was due to the growth in our midstream operations segment from capital spending over the course of the year, as well as the contribution of the gas gathering systems and treating facilities in the Haynesville Shale to KinderHawk and the transfer of a 25% interest in EagleHawk to Eagle Gathering. The KinderHawk and EagleHawk joint ventures are accounted for in accordance with the financing method for a failed sale of in substance real estate. Under the financing method, the historical costs of the Haynesville Shale and Eagle Ford Shale gas gathering systems are carried at the full historical basis of the assets on the unaudited condensed consolidated balance sheets and depreciated over the remaining useful life of the assets. We depreciate our gas gathering systems over a 30 year useful life commencing on the estimated placed in service date.

We entered into derivative commodity instruments to economically hedge our exposure to price fluctuations on our anticipated oil, natural gas, and natural gas liquids production. Historically, we have also entered into interest rate swaps to mitigate exposure to market rate fluctuations by converting variable interest rates (such as those on our Senior Credit Agreement) to fixed interest rates. Consistent with the prior year, we have elected not to designate any positions as cash flow hedges for accounting purposes, and accordingly, we recorded the net change in the mark-to-market value of these derivative contracts in the unaudited condensed consolidated statement of operations. At September, 2011, we had a $296.9 million derivative asset, $250.7 million of which was classified as current, and a $0.4 million derivative liability, all of which was classified as current. We recorded a net derivative gain of $232.0 million ($50.6 million net unrealized gain and $181.4 million net gain for cash received on settled contracts) for the nine months ended September 30, 2011 compared to a net derivative gain of $346.0 million ($190.2 million net unrealized gain and a $155.8 million net gain for cash received on settled contracts) in the same period in 2010.

Interest expense and other increased $28.4 million for the nine months ended September 30, 2011 compared to the same period in 2010. The increase is primarily the result of our accounting for the KinderHawk and EagleHawk joint ventures under the financing method for a failed sale of in substance real estate. For the nine months ended September 30, 2011, we recorded approximately $75.5 million of interest expense on the financing obligation. This increase for the period ended September 30, 2011 was offset by a decrease of $47.1 million, from charges incurred in the prior year related to the early repurchase of the 2013 Notes.

We had an income tax provision of $73.6 million for the nine months ended September 30, 2011 due to our income from continuing operations before income taxes of $201.3 million compared to an income tax provision of $122.8 million due to our income from continuing operations before income taxes of $315.2 million in the prior year. The effective tax rate for the nine months ended September 30, 2011 was 36.6% compared to 39.0% for the nine months ended September 30, 2010. The decrease in our effective tax rate in the current year is primarily due to the impact of the acceleration of certain equity awards as a result of the BHP Merger.

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Recently Issued Accounting Pronouncements

We discuss recently adopted and issued accounting standards in Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 1, "Financial Statement Presentation."

Item 4. Controls and Procedures

In connection with the restatement discussed in Item 1. Condensed Consolidated Financial Statements (Unaudited)—Note 13, "Restatement," our Principal Executive Officer and our Principal Financial Officer re-evaluated the effectiveness of our disclosure controls and procedures and concluded that, because of the material weakness in our internal control over financial reporting, our disclosure controls and procedures were not effective as of September 30, 2011. Notwithstanding the material weakness, our Principal Executive Officer and our Principal Financial Officer have concluded that the unaudited condensed consolidated financial statements included in this Form 10-Q present fairly, in all material respects, our financial position, results of operations and cash flows for the periods presented in conformity with generally accepted accounting principles.

Subsequent to the identification of the material weakness in our internal control over financial reporting, we instituted a new review procedure in which the accounting treatment of material transactions is reported to, reviewed by and approved by our parent company, BHP Billiton Limited, to remediate the related internal control weakness. Our disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is accumulated and communicated to our management, including our Principal Executive Officer and Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting that occurred during the quarter ended September 30, 2011 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may be a plaintiff or defendant in a pending or threatened legal proceeding arising in the normal course of our business. While the outcome and impact of currently pending legal proceedings cannot be determined, our management and legal counsel believe that the resolution of these proceedings through settlement or adverse judgment will not have a material effect on our consolidated operating results, financial position or cash flows.

Subsequent to our execution of the Merger Agreement discussed above, we and the members of our Board were named as defendants in purported class action lawsuits brought by our stockholders challenging the proposed transaction (the Stockholder Actions). The Stockholder Actions were filed in: the Court of Chancery of the State of Delaware, Astor BK Realty Trust v. Petrohawk Energy Corp., et al., C.A. No. 6675-CS, Grossman v. Petrohawk Energy Corp., et al., C.A. No. 6688-CS, Marina Gincherman, IRA v. Petrohawk Energy Corp., et al., C.A. No. 6700, and Binkowski v. Petrohawk Energy Corp., et al., C.A. No. 6706; in the District of Harris County, Texas, Iron Workers District Counsel of Tennessee Valley & Vicinity Pension Plan v. Petrohawk Energy Corp., et al., C.A. No. 42124, Iron Workers Mid-South Pension Fund v. Petrohawk Energy Corp., et al., C.A. No. 42590, and L.A. Murphy v. Wilson, et al., C.A. No. 42772; and in United States District Court for the Southern District of Texas, Rob Barrett v. Floyd C. Wilson, et al., C.A. No. 4:11-cv-02852. The Stockholder Actions seek certification of a class of our stockholders and generally allege, among other things, that: (i) each member of the Board breached his fiduciary duties in connection with the transactions contemplated by the Merger Agreement by failing to maximize stockholder value, agreeing to preclusive deal protection provisions, and failing to protect against conflicts of interest; (ii) we aided and abetted our directors' purported breaches of their fiduciary duties; and/or (iii) the Guarantor, Parent and Purchaser parties aided and abetted the purported breaches of fiduciary duties by our directors. The Stockholder Actions seek, among other relief, rescission of the consummated transactions, damages, and attorneys' fees and costs.

Barrett has been settled and dismissed by the Southern District of Texas with prejudice. Guarantor agreed to pay $125,000 to Plaintiff's counsel for the attorney's fees and expenses incurred. On August 11, 2011, the parties to the Stockholder Actions entered into a Memorandum of Understanding wherein the Defendants acknowledged that the Stockholder Actions were a causal factor leading to the issuance of certain supplemental disclosures included in the Company's supplemental form 14D-9, filed on August 10, 2011. The parties also agreed to negotiate in good faith and execute an appropriate stipulation of settlement, subject to court approval, which shall include payment to Plaintiffs' counsel for their attorneys' fees and expenses incurred (such amount to be negotiated by the parties, subject to court approval, or determined by the court). The parties are in the process of negotiating the terms of the stipulation of settlement.

Under rules promulgated by the SEC, administrative or judicial proceedings arising under any Federal, State or local provisions that have been enacted or adopted regulating the discharge of materials into the environment or primarily for the purpose of protecting the environment are disclosed if the governmental authority is a party to such proceeding and the proceeding involves potential monetary sanctions of $100,000 or more. We are not party to any such proceedings, except as described below.

We were formerly involved in natural gas exploration in the Fayetteville Shale play in North Central Arkansas. Our subsidiary, Hawk Field Services, constructed a pipeline to transport natural gas from wellheads. Hawk Field Services' activities were being performed pursuant to required environmental permits issued by the Arkansas Department of Environmental Quality and the United States Army Corps of Engineers (Corps of Engineers). The terrain in and around the Fayetteville Shale play is very hilly and required that the pipeline cross numerous small creeks and streams. Some of

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these streams ultimately drain into larger waters that are home to an endangered freshwater mussel known as the Speckled Pocketbook (Lampsilis streckeri).

In 2008, the United States Fish and Wildlife Service (USFWS) opened an investigation into the activities of Hawk Field Services and the Company in the Fayetteville Shale play. The investigation focused on the pipeline stream crossings and potential impacts on the Speckled Pocketbook. On April 22, 2009, we received a letter from the United States Attorney's Office for the Eastern District of Arkansas and the Environmental Crimes Section of the United States Department of Justice notifying us that we were under criminal investigation for alleged violations of the Federal Clean Water Act and the Federal Endangered Species Act with respect to the endangered Speckled Pocketbook. Hawk Field Services sold its gathering and treating assets serving the Fayetteville Shale in conjunction with the Company's disposition of its Fayetteville Shale natural gas properties and, as a consequence, neither the Company nor Hawk Field Services currently have ongoing operations in Arkansas. The Company and the United States Department of Justice entered into a plea agreement and Hawk Field Services has pleaded guilty to three misdemeanor counts of violating the Endangered Species Act. Under the plea agreement, the Company agreed to pay a $350,000 fine and contribute $150,000 toward environmental conservation efforts in the Fayetteville Shale area. The United States District Court for the Eastern District of Arkansas accepted the plea agreement on September 14, 2011, and the Company paid the fine and contribution during the third quarter of 2011.

Item 1A. Risk Factors

There have been no material changes to the risk factors described in the Company's Annual Report on Form 10-K, as amended, for the year ended December 31, 2010, except as stated below.

Availability of adequate gathering systems and transportation take-away capacity may hinder our access to suitable oil and natural gas markets or delay our production.

Our ability to bring natural gas, natural gas liquids and crude oil production to market depends on a number of factors including the availability and proximity of pipelines and processing facilities. The recent growth in production in the Eagle Ford Shale, especially of oil and natural gas liquids production, has limited the availability of transportation take-away capacity for these products. If we are unable to obtain adequate amounts of take-away capacity to meet our growing production levels, we may have to delay initial production or shut in our wells awaiting a pipeline connection or capacity and/or sell our production at significantly lower prices than those quoted on NYMEX or than we currently project, which could adversely affect our results of operations.

Certain federal income tax deductions currently available with respect to oil and gas exploration and development may be eliminated as a result of future legislation.

Among the changes contained in the President's Fiscal Year 2012 budget proposal, released by the White House on February 14, 2011, is the elimination or deferral of certain key U.S. federal income tax deductions currently available to oil and gas exploration and production companies. Such changes include, but are not limited to, (i) the repeal of the percentage depletion allowance for oil and gas properties; (ii) the elimination of current deductions for intangible drilling and development costs; (iii) the elimination of the deduction for certain U.S. production activities; and (iv) an extension of the amortization period for certain geological and geophysical expenditures. Recently, members of the U.S. Congress have considered similar changes to the existing federal income tax laws that affect oil and gas exploration and production companies, which, if enacted, would negatively affect our financial condition and results of operations. The passage of any legislation as a result of the budget proposal or any other similar change in U.S. federal income tax law could eliminate or defer certain tax deductions within the industry that are currently available with respect to oil and gas exploration and development, and any such change could negatively affect our financial condition and results of operations.

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Possible regulation related to global warming and climate change could have an adverse effect on our operations and demand for oil and natural gas.

Studies over recent years have indicated that emissions of certain gases may be contributing to warming of the Earth's atmosphere. In response to these studies, governments have begun adopting domestic and international climate change regulations that requires reporting and reductions of the emission of greenhouse gases. Methane, a primary component of natural gas, and carbon dioxide, a byproduct of the burning of oil, natural gas and refined petroleum products, are considered greenhouse gases. Internationally, the United Nations Framework Convention on Climate Change, and the Kyoto Protocol address greenhouse gas emissions, and several counties including the European Union have established greenhouse gas regulatory systems. In the United States, at the state level, many states, either individually or through multi state regional initiatives, have begun implementing legal measures to reduce emissions of greenhouse gases, primarily through the planned development of emission inventories or regional greenhouse gas cap and trade programs or have begun considering adopting greenhouse gas regulatory programs.

The EPA has issued greenhouse gas monitoring and reporting regulations that went into effect January 1, 2010, and require reporting by regulated facilities by March 2011 and annually thereafter. In November 2010, the EPA issued a final rule requiring companies to report certain greenhouse gas emissions from oil and natural gas facilities. On July 19, 2011, the EPA amended the oil and natural gas facility greenhouse gas reporting rule to require reporting beginning in September 2012. Beyond measuring and reporting, the EPA issued an "Endangerment Finding" under section 202(a) of the Clean Air Act, concluding greenhouse gas pollution threatens the public health and welfare of current and future generations. The finding serves as a first step to issuing regulations that would require permits for and reductions in greenhouse gas emissions for certain facilities. EPA has proposed such greenhouse gas regulations and may issue final rules this year. On July 28, 2011, the EPA proposed four new regulations that, if finalized, could affect our business. The regulations would establish new source performance standards for volatile organic compounds (VOCs) and sulfur dioxide and establish an air toxic standard for oil and natural gas production, transmission, and storage. The proposed regulations would apply to wells that are hydraulically fractured, or refractured, and to storage tanks and other equipment, and limit methane emissions from those sources. The EPA is in the process of accepting public comments on the proposed regulations, and expects to take final action by February 28, 2012.

In the courts, several decisions have been issued that may increase the risk of claims being filed by governments and private parties against companies that have significant greenhouse gas emissions. Such cases may seek to challenge air emissions permits that greenhouse gas emitters apply for and seek to force emitters to reduce their emissions or seek damages for alleged climate change impacts to the environment, people, and property.

Any laws or regulations that may be adopted to restrict or reduce emissions of greenhouse gases could require us to incur increased operating and compliance costs, and could have an adverse effect on demand for the oil and natural gas that we produce.

Federal and state legislation and regulatory initiatives relating to hydraulic fracturing could result in increased costs and additional operating restrictions or delays.

Legislation was proposed in the last Congress, and reintroduced in the current Congress, to amend the federal Safe Drinking Water Act to require the disclosure of chemicals used by the oil and natural gas industry in the hydraulic fracturing process. Hydraulic fracturing involves the injection of water, sand and chemicals under pressure into rock formations to stimulate oil and natural gas production. We engage third parties to provide hydraulic fracturing or other well stimulation services to us in connection with many of the wells for which we are the operator. If similar legislation is ultimately

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adopted, it could establish an additional level of regulation at the federal or state level that could lead to operational delays or increased operating costs and could result in additional regulatory burdens that could make it more difficult to perform hydraulic fracturing and increase our costs of compliance and doing business. Certain states have adopted or are considering similar disclosure legislation, and Texas has adopted legislation requiring the disclosure of hydraulic fracturing chemicals and concentrations to the Texas Railroad Commission.

In March 2010, the United States Environmental Protection Agency announced that it would conduct a wide-ranging study on the effects of hydraulic fracturing on drinking water resources. Interim results of the study are expected in 2012, with final results expected in 2014. The agency also announced that one of its enforcement initiatives for 2011 to 2013 would be to focus on environmental compliance by the energy extraction sector. This study and enforcement initiative could result in additional regulatory scrutiny that could make it difficult to perform hydraulic fracturing and increase our costs of compliance and doing business.

Certain federal income tax deductions currently available with respect to oil and gas exploration and development may be eliminated as a result of future legislation.

During 2011, the White House released a proposed federal 2012 budget and deficit reduction initiative that recommended the elimination or deferral of certain key U.S. federal income tax deductions currently available to oil and gas exploration and production companies, including, but not limited to, (i) the repeal of the percentage depletion allowance for oil and gas properties; (ii) the elimination of current deductions for intangible drilling and development costs; (iii) the elimination of the deduction for certain U.S. production activities; and (iv) an extension of the amortization period for certain geological and geophysical expenditures. Recently, members of the U.S. Congress have considered similar changes to the existing federal income tax laws that affect oil and gas exploration and production companies, which, if enacted, would negatively affect our financial condition and results of operations. The passage of any legislation as a result of these proposals or any other similar change in U.S. federal income tax law could eliminate or defer certain tax deductions within the industry that are currently available with respect to oil and gas exploration and development, and any such change could negatively affect our financial condition and results of operations.

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Item 6. Exhibits

The following documents are included as exhibits to this Quarterly Report on Form 10-Q. Those exhibits incorporated by reference are so indicated by the information supplied with respect thereto. Those exhibits which are not incorporated by reference are attached hereto.

Exhibit No			Description

	2.1		Agreement and Plan of Merger, dated as of July 14, 2011, by and among BHP Billiton Limited, BHP Billiton Petroleum (North America) Inc., North America Holdings II Inc. and Petrohawk Energy Company (Incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K filed on July 20, 2011).
	3.1		Certificate of Incorporation for Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 to our Form S-8 (File No. 333-117733) filed on July 29, 2004).
	3.2		Certificate of Amendment to Certificate of Incorporation for Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on November 24, 2004).
	3.3		Certificate of Amendment of Certificate of Incorporation of Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on August 3, 2005).
	3.4		Amended and Restated Bylaws of Petrohawk Energy Corporation effective as of July 12, 2006 (Incorporated by reference to Exhibit 3.2 of our Current Report on Form 8-K filed on July 17, 2006).
	3.5		Certificate of Amendment to Certificate of Incorporation of Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on July 17, 2006).
	3.6		Certificate of Designations of Series A Junior Preferred Stock of Petrohawk Energy Corporation effective as of October 15, 2008 (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on October 16, 2008).
	3.7		Certificate of Amendment to Certificate of Incorporation of Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on June 23, 2009).
	3.8		Amended and Restated Certificate of Incorporation of Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K filed on August 26, 2011).
	3.9		Second Amended and Restated Bylaws of Petrohawk Energy Corporation (Incorporated by reference to Exhibit 3.2 of our Current Report on Form 8-K filed on August 26, 2011).
	4.1		Indenture, dated May 13, 2008, among Petrohawk Energy Corporation, the subsidiary guarantors named therein, and U.S. Bank Trust National Association (Incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed on May 15, 2008).
	4.2		First Supplemental Indenture dated as of November 28, 2008 among Petrohawk Energy Corporation, HK Energy Marketing, LLC, and parties named therein as guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.17 to our Annual Report on Form 10-K filed on February 25, 2009).

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Exhibit No			Description

	4.3		Second Supplemental Indenture dated as of January 26, 2009 among Winwell Resources, L.L.C., KCS Resources, LLC, Petrohawk Energy Corporation, the parties named therein as guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.18 to our Annual Report on Form 10-K filed on February 25, 2009).
	4.4		Third Supplemental Indenture dated as of August 4, 2009 among Kaiser Trading, LLC, Petrohawk Energy Corporation, the existing Guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.21 to our Quarterly Report on Form 10-Q filed on November 5, 2009).
	4.5		Fourth Supplemental Indenture dated as of June 30, 2010 among Big Hawk Services, LLC, Petrohawk Energy Corporation, the existing Guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.24 to our Quarterly Report on Form 10-Q filed on August 3, 2010).
	4.6		Indenture, dated January 27, 2009, among the Petrohawk Energy Corporation, the subsidiary guarantors named therein, and U.S. Bank Trust National Association (Incorporated by reference to Exhibit 4.1 of our Current Report on Form 8-K filed on January 28, 2009).
	4.7		First Supplemental Indenture, dated August 4, 2009, among the Kaiser Trading, LLC, Petrohawk Energy Corporation, the existing Guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.26 to our Quarterly Report on Form 10-Q filed on November 5, 2009).
	4.8		Second Supplemental Indenture, dated June 30, 2010, among the Big Hawk Services, LLC, Petrohawk Energy Corporation, the existing Guarantors, and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.19 to our Quarterly Report on Form 10-Q filed on August 3, 2010).
	4.9		Indenture, dated as of August 17, 2010, among Petrohawk Energy Corporation, the guarantors named therein and U.S. Bank National Association, as Trustee (Incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed on August 20, 2010).
	4.10		Registration Rights Agreement, dated as of August 17, 2010, among Petrohawk Energy Corporation and Barclays Capital Inc., on behalf the initial purchasers named therein (Incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K filed on August 20, 2010).
	4.11		Registration Rights Agreement, dated January 31, 2011, among Petrohawk Energy Corporation, the subsidiary guarantors named therein, and the initial purchaser named therein (Incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K filed February 3, 2011).
	4.12		Supplemental Indenture, dated May 31, 2011, among FracHawk Services, LLC, Petrohawk Energy Corporation, the existing Guarantors and U.S. Bank Trust National Association, as trustee (Incorporated by reference to Exhibit 4.24 to our Quarterly Report on Form 10-Q filed August 3, 2011).
	4.13		Registration Rights Agreement, dated as of May 20, 2011, among Petrohawk Energy Corporation and Wells Fargo Securities, LLC, on behalf of the initial purchasers named therein (Incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed May 20, 2011).

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		Description

4.14		Indenture, dated as of May 20, 2011, among Petrohawk Energy Corporation, the guarantors named therein and U.S. Bank Trust National Association, as Trustee (Incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K filed May 20, 2011).
10.1		Waiver and Consent, dated as of August 15, 2011, among the Company, each of the guarantors named therein, each of the lenders party thereto and BNP Paribas, as administrative agent for the lenders (Incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed August 19, 2011)
10.2		Notification of Aggregate Maximum Credit Amounts Reduction dated September 27, 2011 (Incorporated by reference to Exhibit 10.1 of our Current Report on Form 8-K filed October 3, 2011)
10.3		Fourth Amendment to Fifth Amended and Restated Senior Revolving Credit Agreement dated July 1, 2011 (Incorporated by reference to Exhibit 10.1 of our Current Report on Form 8-K filed July 6, 2011).
10.4	†	Executive Retention Agreement, dated as of July 14, 2011, between Petrohawk Energy Corporation and Floyd C. Wilson (Incorporated by reference to Exhibit 10.1 of our Current Report on Form 8-K filed July 20, 2011).
10.5	†	Form of Executive Retention Agreement with Petrohawk Energy Corporation for Mark J. Mize and Ellen R. DeSanctis (Incorporated by reference to Exhibit 10.2 of our Current Report on Form 8-K filed July 20, 2011).
10.6	†	Form of Executive Retention Agreement with Petrohawk Energy Corporation for Stephen W. Herod and Charles W. Latch (Incorporated by reference to Exhibit 10.3 of our Current Report on Form 8-K filed July 20, 2011).
10.7	†	Form of Executive Retention Agreement with Petrohawk Energy Corporation for Richard K. Stoneburner and H. Weldon Holcombe (Incorporated by reference to Exhibit 10.4 of our Current Report on Form 8-K filed July 20, 2011).
10.8	†	Form of Executive Retention Agreement between the Company and David S. Elkouri, Larry L. Helm, Tina S. Obut and C. Byron Charboneau (Incorporated by reference to Exhibit 10.5 of our Current Report on Form 8-K filed July 20, 2011).
31.1	*	Certificate of Principal Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002
31.2	*	Certificate of Principal Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002
32.1	*	Certifications required by Rule 13a-14(b) or Rule 15d-14(b) under the Securities Exchange Act of 1934 and 18 U.S.C. Section 1350
101	*	Interactive Data File

*: Attached hereto.
†: Indicates management contract or compensatory plan or arrangement.

The registrant has not filed with this report copies of the instruments defining rights of all holders of long-term debt of the registrant and its consolidated subsidiaries based upon the exception set forth in Item 601(b)(4)(iii)(A) of Regulation S-K. Copies of such instruments will be furnished to the Securities and Exchange Commission upon request.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	PETROHAWK ENERGY CORPORATION
Date: December 5, 2011	By:	/s/ RICHARD K. STONEBURNER Richard K. Stoneburner Principal Executive Officer
	By:	/s/ JOHN A. SIMMONS John A. Simmons Principal Financial Officer
	By:	/s/ C. BYRON CHARBONEAU C. Byron Charboneau Principal Accounting Officer

PETROHAWK ENERGY CORP 10-Q