Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligations

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Asset Retirement Obligations
6 Months Ended
Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations

3.  Asset Retirement Obligations

Our ARO primarily represents the estimated present value of the amount we will incur to plug, abandon and remediate our producing properties at the end of their productive lives in accordance with applicable laws.  

A summary of the changes to our ARO is as follows (in thousands):  

 

Balance, December 31, 2014

$

390,568

 

Liabilities settled

 

(21,939

)

Accretion of discount

 

10,930

 

Disposition of properties

 

(965

)

Liabilities assumed through acquisition

 

2,944

 

Liabilities incurred

 

4,671

 

Revisions of estimated liabilities (1)

 

3,858

 

Balance, June 30, 2015

 

390,067

 

Less current portion

 

41,494

 

Long-term

$

348,573

 

 

 

(1) Revisions were primarily attributable to increases from non-operated properties.