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8. Asset Retirement Obligation (Tables)
3 Months Ended
Mar. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Asset retirement obligation
    Three Months
Ended
 
    March 31, 2016  
Beginning ARO   $ 368,089  
Liabilities incurred for new wells placed in production      
Accretion of discount on ARO (a component of loss from discontinued operations)     8,133  
Ending ARO   $ 376,222