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6. Oil and Gas Properties (Details-Development costs) - USD ($)
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Extractive Industries [Abstract]    
Purchases of oil and gas properties and development costs for cash $ 17,968,423 $ 17,410,744
Purchase of oil and gas properties accrued at period-end 7,359,282 11,775,176
Purchase of oil and gas properties accrued at the beginning of period (9,364,796) (7,953,801)
Advances to operators applied to development of oil and gas properties 0 4,285,575
Capitalized asset retirement costs, net of revision in estimate 42,391 61,815
Total purchase and development costs, oil and gas properties $ 16,005,300 $ 25,579,509