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Asset Retirement Obligations (Tables)
9 Months Ended
Jan. 31, 2016
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Changes to Asset Retirement Obligation
   

Nine Months Ended January 31,

2016

   

Period from May 1, 2014 to April 30,

2015

 
Balance, beginning of period   $ 918,430     $ 818,010  
Additions     -       52,514  
Disposals     (207,827 )     -  
Accretion     48,320       47,906  
Total asset retirement obligations     758,923       918,430  
Less: current portion of asset retirement obligations     (541,959 )     (541,959 )
Long-term portion of asset retirement obligations   $ 216,964     $ 376,471  
Schedule of Expected Timing of Asset Retirement Obligations
Year Ending April 30,      
2016 (remainder of year)     541,959  
2017     20,000  
2018     -  
2019     -  
2020     -  
Thereafter     393,353  
Subtotal     955,312  
Effect of discount     (196,389 )
Total   $ 758,923