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Derivative financial instruments (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net cash receipts from (payments on) derivatives:	$ 1,520,988	$ 370,356
Oil derivatives [Member]
Net cash receipts from (payments on) derivatives:	1,520,988	358,799
Natural gas derivatives [Member]
Net cash receipts from (payments on) derivatives:	$ 0	$ 11,557

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