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Inventory
3 Months Ended
Mar. 31, 2012
Inventory [Abstract]  
Inventory

3. Inventory

Equipment and materials consist primarily of tubular goods, well equipment to be used in future drilling or repair operations and well fracturing equipment, all of which are stated at the lower of cost or market with cost determined on an average cost method. Crude oil inventories include oil in tank and line fill and are valued at the lower of average cost or market value. Inventory consists of the following:

 

     March 31,
2012
     December 31,
2011
 
     (In thousands)  

Equipment and materials

   $ 7,485       $ 2,709   

Crude oil inventory

     2,937         834   
  

 

 

    

 

 

 

Total inventory

   $ 10,422       $ 3,543