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Other Assets (Tables)
 6 Months Ended
Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of other assets
As of December 31, 2018 and June 30, 2018, other assets consisted of the following:
 
December 31,
2018
 
June 30,
2018
Royalty rights
$
108,512

 
$
108,512

Less: Accumulated amortization of royalty rights
(40,692
)
 
(33,910
)
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
(134,349
)
 
(126,771
)
Software license
20,662

 
20,662

Less: Accumulated amortization of software license
(3,450
)
 
(1,380
)
Other assets, net
$
228,405

 
$
244,835