UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): July ~~April 14~~27, 2011 (July 25, 2011)

ALLIS-CHALMERS ENERGY INC.

(Exact name of registrant as specified in its charter)

Delaware	001-02199	27-3321250
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)
(State or other jurisdiction	(Commission File Number)	(IRS Employer
of incorporation)		Identification No.)

11125 Equity Drive
Suite 200
Houston, Texas	77041
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (713) 856-4222

______________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

¨Item ~~Soliciting~~4.02 Non-Reliance ~~material~~on ~~pursuant~~Previously toIssued ~~Rule~~Financial ~~14a-12~~Statements ~~under~~or ~~the~~a ~~Exchange~~Related ~~Act~~Audit ~~(17~~Report ~~CFR~~or ~~240~~Completed Interim Review.~~14a-12)~~

¨On ~~Pre-commencement~~July ~~communications~~25, ~~pursuant~~2011, tothe ~~Rule~~management ~~14d~~of Allis-2Chalmers Energy Inc. (bthe “Company”) ~~under~~concluded that the ~~Exchange~~Company’s ~~Act~~financial ~~(17~~statements ~~CFR~~for ~~240.14d~~the year ended December 31, 2010 included in the Company’s Annual Report on Form 10-2K (bthe “2010 Form 10-K”)) need to be restated after further considering certain aspects of the Company’s tax accounts for this period, as further described below. Accordingly, the financial statements for the fourth quarter and year ended December 31, 2010 included in the Company’s 2010 Form 10-K should no longer be relied upon. The Company intends to correct the error by amending its 2010 Form 10-K to include the restated financial results.

¨The ~~Pre-commencement~~restatement ~~communications~~is ~~pursuant~~necessitated by the Company’s determination that positive evidence available at year end 2010 was not sufficient to ~~Rule~~overcome ~~13e-4(c)~~the ~~under~~negative evidence around the ~~Exchange~~deferred ~~Act~~tax ~~(17~~assets ~~CFR~~and ~~240~~to justify not booking a valuation allowance against federal income tax assets and foreign tax credits.~~13e-~~ The expected impact will be to increase the valuation allowance by $ 37.4~~(c))~~ million, and to increase the net loss from operations accordingly.

~~Item 4.01~~As ~~Changes~~a result of this determination, management has concluded that a material weakness in ~~Registrant~~the Company’s ~~Certifying~~internal ~~Accountant~~control over financial reporting over the calculation and valuation of deferred tax assets, the related income tax provision and the related financial statement disclosures existed as of December 31, 2010. Accordingly, the amendment to the 2010 Form 10-K will also revise management’s conclusions regarding effectiveness of the Company’s internal controls over financial reporting. The Company’s board of directors and management has discussed the matters set forth herein with PricewaterhouseCoopers LLP, the Company’s current registered independent public accounting firm, and with UHY LLP, the Company’s former registered independent public accounting firm for the period impacted by this restatement as described above.

On April 14, 2011, Allis-Chalmers Energy Inc., a Delaware corporation (the “Company”) dismissed UHY LLP as the Company’s independent registered public accounting firm. The decision to dismiss UHY LLP as the Company’s independent registered public accounting firm was approved by the Company’s Board of Directors. The reports of UHY LLP on the Company’s financial statements for the years ended December 31, 2010 and 2009 did not contain an adverse opinion or disclaimer of opinion, and such reports were not qualified or modified as to uncertainty, audit scope, or accounting principle.

During the Company’s two most recent fiscal years and the subsequent interim period prior to the date of this report, there were no: (a) disagreements between the Company and UHY LLP on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of UHY LLP, would have caused UHY LLP to make reference to the subject matter of the disagreement in its reports on the financial statements for such years; or (b) “reportable events” as that term is defined in Item 304(a)(1)(v) of Regulation S-K.

On April 14, 2011, the Company engaged PricewaterhouseCoopers LLP (“PWC”) as its independent registered public accounting firm for the Company’s fiscal year ended December 31, 2011. The decision to engage PWC as the Company’s independent registered public accounting firm was approved by the Company’s Board of Directors. During the Company’s two most recent fiscal years and the subsequent interim period prior to the date of this report, the Company did not consult with PWC regarding matters or events set forth in Item 304(a)(2)(i) or (ii) of Regulation S-K.

The Company provided UHY LLP with a copy of this disclosure as required by Item 304(a)(3) of Regulation S-K, and requested UHY LLP to furnish a letter addressed to the United States Securities and Exchange Commission stating whether or not it agrees with the above statements. A copy of the letter from UHY LLP is attached hereto Exhibit 16.1.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

16.1 Response Letter of UHY LLP.

SIGNATURE

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 hereunto duly authorized.

	ALLIS-CHALMERS ENERGY INC.		~~ALLIS-CHALMERS ENERGY INC.~~
Date: April 19, 2011			By:	/s/ Max Bouthillette
Date: July 27, 2011	By:	/s/ Max Bouthillette
		Max Bouthillette		~~Max Bouthillette~~
		General Counsel and Secretary		~~General Counsel and Secretary~~

EXHIBIT INDEX

Exhibit Number Exhibit Description

(d) Exhibits

16.1 Response Letter of UHY LLP.

Filing Compare · Allis Chalmers Energy Inc.