Oil and Natural Gas Properties - Schedule of Oil and Natural Gas Properties (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Oil and gas properties, beginning balance	$ 6,650,932	$ 5,723,394	$ 5,723,394
Foreign currency translation change	(1,311)		(3,697)
Expenditures	31,048		504,110
Depletion	(151,400)	(163,049)	(700,219)
Asset retirement cost addition			1,127,344
Oil and gas properties, ending balance	6,529,269		6,650,932
Unproven Properties Bulgaria [Member]
Oil and gas properties, beginning balance	3,117,229	3,083,831	3,083,831
Foreign currency translation change	(1,311)		(3,697)
Expenditures			37,095
Depletion
Asset retirement cost addition
Oil and gas properties, ending balance	3,115,918		3,117,229
Proven Properties Turkey [Member]
Oil and gas properties, beginning balance	3,533,703	$ 2,639,563	2,639,563
Foreign currency translation change
Expenditures	31,048		467,015
Depletion	(151,400)		(700,219)
Asset retirement cost addition			1,127,344
Oil and gas properties, ending balance	$ 3,413,351		$ 3,533,703