v2.4.0.6

Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2013	May 15, 2013 Managing general partner	May 15, 2013 Limited partners
Entity Registrant Name	Reef Global Energy VIII, L.P.
Entity Central Index Key	0001368954
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		32.425	616.076
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1

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Reef Global Energy VIII, L.P. 10-Q