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Property and Equipment
6 Months Ended
Jun. 30, 2012
Property and Equipment [Abstract]  
Property and Equipment

(5) Property and Equipment:

Property and equipment at June 30, 2012 and December 31, 2011 consisted of the following:

 

                 
(Thousands of dollars)   June 30,
2012
    December 31,
2011
 

Proved oil and gas properties, at cost

  $ 531,806     $ 492,393  

Less: Accumulated depletion and depreciation

    (368,312     (355,643
   

 

 

   

 

 

 

Oil and Gas Properties, Net

  $ 163,494     $ 136,750  
   

 

 

   

 

 

 

Field and office equipment

  $ 22,498     $ 21,553  

Less: Accumulated depreciation

    (14,230     (13,608
   

 

 

   

 

 

 

Field and Office Equipment, Net

  $ 8,268     $ 7,945  
   

 

 

   

 

 

 

Total Property and Equipment, Net

  $ 171,762     $ 144,695