Asset Retirement Obligations

6 Months Ended

Jun. 30, 2016

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

Asset Retirement Obligations

The following table is a reconciliation of the ARO liability as of and for the six months ended June 30, 2016 and the twelve months ended December 31, 2015.

	June 30, 2016			December 31, 2015
Asset retirement obligation at beginning of period	$	109,171		$	44,214
Liabilities incurred on properties acquired and developed	—			2,506
Revisions to previous estimates	—			60,832
Liabilities on properties sold or settled	(27,850		)	(3,721		)
Accretion expense	1,597			5,340
Asset retirement obligation at end of period	$	82,918		$	109,171