Annual report pursuant to Section 13 and 15(d)

SUPPLEMENTAL INFORMATION RELATING TO OIL AND GAS PRODUCING ACTIVITIES (UNAUDITED) (Details 2)

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SUPPLEMENTAL INFORMATION RELATING TO OIL AND GAS PRODUCING ACTIVITIES (UNAUDITED) (Details 2) - bbl
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Oil and Gas Exploration and Production Industries Disclosures [Abstract]    
Proved oil and gas reserves, beginning 2,227,240 734,520
Proved oil and gas reserves - Revisions of prior estimates (2,186,554) (58,297)
Proved oil and gas reserves - Purchases of reserves in place 1,600,935 1,557,660
Proved oil and gas reserves - Production (3,421) (6,643)
Proved oil and gas reserves, ending 1,638,200 2,227,240