Quarterly report pursuant to Section 13 or 15(d)

6. Property and Equipment (Details-Depreciation)

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6. Property and Equipment (Details-Depreciation) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Property and equipment:        
Depletion of costs for evaluated oil and gas properties     $ 3,114,347 $ 7,346,356
Depreciation and amortization of other property and equipment $ 3,484 $ 4,010 10,848 12,286
Total depreciation, amortization and depletion     $ 3,125,195 $ 7,358,642