Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligations

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Asset Retirement Obligations
9 Months Ended
Sep. 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

 

(25,515

)

Accretion of discount

 

15,883

 

Disposition of properties

 

(965

)

Liabilities incurred

 

7,615

 

Revisions of estimated liabilities (1)

 

12,040

 

Balance, September 30, 2015

 

399,626

 

Less current portion

 

84,588

 

Long-term

$

315,038

 

 

 

(1) Revisions were primarily attributable to increases in scope of work, additional time to complete the work and from non-operated properties.