Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,355,677	$ 4,440,963
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	677,256	715,399
Accretion expense	273,023	313,641
Gain on disposal of property and equipment	(27,775)	(644,898)
Gain on sale of other assets		(15,164)
Deferred income taxes	5,000	3,000
Changes in assets and liabilities:
Production accounts receivable	453,035	(472,145)
Other current assets	56,531	(47,831)
Other assets	(5,828)	824
Accounts payable	266,705	(88,157)
Accrued expenses	(93,262)	12,903
Operational advances	328,053	621,708
Total adjustments	1,932,738	399,280
Net cash provided by operating activities	4,288,415	4,840,243
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of investments	(3,043,444)	(3,856,358)
Payments received on notes receivables from employees		46,870
Advances disbursed to employees		(3,700)
Purchase of property and equipment	(323,903)	(405,623)
Proceeds from disposal of property and equipment	38,639	40,381
Proceeds from sale of other assets		25,539
Net cash used in investing activities	(3,328,708)	(4,152,891)
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions	(1,684,936)
Repurchase of Units	(129,582)	(7,509)
Proceeds from options exercised	45,000	3,300
Net cash used in financing activities	(1,769,518)	(4,209)
NET CHANGE IN CASH AND EQUIVALENTS	(809,811)	683,143
CASH AND EQUIVALENTS AT BEGINNING OF YEAR	12,566,868	11,883,725
CASH AND EQUIVALENTS AT END OF YEAR	11,757,057	12,566,868
Supplemental disclosures of cash flow information:
Cash paid during the year for income taxes	$ 40,215	$ 3,650