SEGMENT REPORTING (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 163,365,565	$ 180,720,661
Income (loss) from operations	(2,774,044)	488,348
Total assets	120,759,919	84,160,408
Black Oil
Segment Reporting Information [Line Items]
Revenues	139,269,164	143,836,981
Income (loss) from operations	433,901	3,561,223
Total assets	114,976,772	76,540,888
Refining and Marketing
Segment Reporting Information [Line Items]
Revenues	12,957,767	22,935,482
Income (loss) from operations	(576,487)	(2,250,924)
Total assets	1,101,470	1,407,002
Recovery
Segment Reporting Information [Line Items]
Revenues	11,138,634	13,948,198
Income (loss) from operations	(2,631,458)	(821,951)
Total assets	$ 4,681,677	$ 6,212,518

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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