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OIL AND GAS PROPERTIES
3 Months Ended
Mar. 31, 2013
OIL AND GAS PROPERTIES  
OIL AND GAS PROPERTIES
6.           OIL AND GAS PROPERTIES

The following table sets forth the composition of impairment and abandonment expenses:

   
Three months ended March 31,
 
   
2013
   
2012
 
Impairment and abandonment of unproved properties
  $ 817,738     $ 676,474  

2013 Asset Impairments. Non-cash impairments of unproved properties include $0.8 million related to individually insignificant acreage.  There were no impairments or abandonments of proved properties.

2012 Asset Impairments. Non-cash impairments of unproved properties include $0.7 million related to individually insignificant acreage.  There were no impairments or abandonments of proved properties.