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Significant Concentrations (Tables)
3 Months Ended
Mar. 31, 2019
Segment Reporting [Abstract]  
Schedule of Concentration Risk by Operator

During the three month periods ended March 31, 2019 and 2018, the joint interest operators that accounted for 10% or more of the Company’s total oil and natural gas revenue for at least one of the periods presented are as follows:

 

Operator   2019   2018 
          
 A    47%   17%
 B    27%   47%
 C    13%   13%
 D    -%   10%