Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,373,899	$ 756,525
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	132,344	159,473
Accretion expense	74,700	86,600
Gain on disposal of property and equipment	(38,600)	(127,465)
Changes in assets and liabilities:
Production accounts receivable	(312,900)	(123,650)
Other current assets	56,531	1,846
Other assets	(348)
Accounts payable	214,653	(66,053)
Accrued expenses	(494,285)	(492,099)
Operational advances	132,281	128,288
Total adjustments	(235,624)	(433,060)
Net cash provided by operating activities	1,138,275	323,465
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of investments	(165,514)	(3,547,866)
Payments received on receivables from employees		31,709
Purchase of property and equipment	(8,080)
Proceeds from disposal of property and equipment	32,600	32,400
Net cash used in investing activities	(140,994)	(3,483,757)
NET CHANGE IN CASH AND EQUIVALENTS	997,281	(3,160,292)
CASH AND EQUIVALENTS - BEGINNING OF PERIOD	12,566,868	11,883,725
CASH AND EQUIVALENTS - END OF PERIOD	13,564,149	8,723,433
Supplemental disclosures of cash flow information and non-cash activities:
Cash paid during the period for income taxes	$ 11,135	$ 3,600