ASSET RETIREMENT OBLIGATIONS (Tables)

6 Months Ended

Jun. 30, 2019

ASSET RETIREMENT OBLIGATIONS [Abstract]

Changes in Aggregate Asset Retirement Obligations

ARO as of December 31, 2018	$	119,606
Liabilities incurred		339
Revisions		(6)
Accretion expense		4,378
Settlements and divestitures		(9,904)
Liabilities held for sale		(10,618)
ARO as of June 30, 2019	$	103,795