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6. PROPERTY, PLANT AND EQUIPMENT
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

Other property, plant and equipment consist principally of drilling rigs, and office furniture and equipment.  Historical cost and accumulated depreciation are as follows:

 

    03/31/13     12/31/12  
             
 Drilling rigs and related equipment   $ 841,647     $ 835,146  
 Office equipment     5,165       5,165  
 Furniture and fixtures     1,049       1,049  
 Vehicles     188,541       188,521  
 Equipment     24,598       24,598  
 Total property, plant and equipment - at cost     1,061,000       1,054,479  
 Less: accumulated depreciation     (285,815 )     (218,170 )
 Net property, plant and equipment - other   $ 775,185     $ 836,309  

 

Assets other than drilling equipment and vehicles generally have estimated useful lives of three years.  Estimated useful lives of drilling equipment and vehicles is five years.  Depreciation for the three months ended March 31, 2013 and 2012 was $64,971 and $28,194, respectively.