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Significant Concentrations (Tables) | 3 Months Ended
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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 | %

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