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Other Assets (Tables)
 3 Months Ended
Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of other assets
As of September 30, 2017 and June 30, 2017, other assets consisted of the following:
 
September 30,
2017
 
June 30,
2017
Royalty rights
$
108,512

 
$
108,512

Less: Accumulated amortization of royalty rights
(23,737
)
 
(20,346
)
Investment in Well Lift Inc., at cost
108,750

 
108,750

Deferred loan costs
168,972

 
168,972

Less: Accumulated amortization of deferred loan costs
(84,571
)
 
(70,504
)
Other assets, net
$
277,926

 
$
295,384