Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2011

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

During the six months ended June 30, 2011, Energen Resources recognized amounts representing expected future costs associated with site reclamation, facilities dismantlement, and plug and abandonment of wells as follows:

(in thousands)
Balance of ARO as of December 31, 2010	$	97,415
Liabilities incurred	2,291
Liabilities settled	(924		)
Accretion expense	3,338
Balance of ARO as of June 30, 2011	$	102,120