Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2012

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

During the six months ended June 30, 2012, 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, 2011	$	107,340
Liabilities incurred	2,122
Liabilities settled	(343		)
Accretion expense	3,674
Balance of ARO as of June 30, 2012	$	112,793