Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,179,548	$ 2,402,763
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	267,512	322,518
Accretion expense	146,600	167,400
Gain on disposal of property and equipment	(37,300)	(553,765)
Gain on sale of other assets		(8,960)
Changes in assets and liabilities:
Production accounts receivable	377,606	(199,398)
Other current assets	56,531	1,846
Other assets	(495)	700
Accounts payable	216,101	(63,359)
Accrued expenses	(453,674)	(445,709)
Operational advances	240,805	325,844
Total adjustments	813,686	(452,883)
Net cash provided by operating activities	2,993,234	1,949,880
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of investments	(315,455)	(3,649,154)
Payments received on receivables from employees		37,831
Proceeds from disposal of property and equipment	33,700	35,300
Proceeds from sale of other assets		8,960
Purchase of property and equipment	(113,478)
Net cash used in investing activities	(395,233)	(3,567,063)
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions	(1,684,936)
Proceeds from options exercised	45,000	3,300
Net cash provided by (used in) financing activities	(1,639,936)	3,300
NET CHANGE IN CASH AND EQUIVALENTS	958,065	(1,613,883)
CASH AND EQUIVALENTS - BEGINNING OF PERIOD	12,566,868	11,883,725
CASH AND EQUIVALENTS - END OF PERIOD	13,524,933	10,269,842
Supplemental disclosures of cash flow information and non-cash activities:
Cash paid during the period for income taxes	$ 11,135	$ 3,600