XML 99 R80.htm IDEA: XBRL DOCUMENT v3.3.1.900
Supplemental Oil and Gas Information (Details - Changes in Future Cash Flows) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Changes in Standardized Measure of Discounted Future net Cash Flows    
Standard measure, beginning of year $ 85,121,658 $ 61,659,271
Sales of oil and natural gas produced, net of production costs (9,763,075) (16,193,558)
Net changes of prices and production costs (56,694,415) (6,329,518)
Revisions of quantity estimates (33,837,468) (5,567,648)
Extensions and discoveries and other adjustments 3,441,930 34,053,998
Changes in estimated future development costs 216,624 1,453,332
Sale of reserves in place 0 (276,920)
Previously estimated development costs incurred during the period 16,391,373 8,946,915
Accretion of discount 10,033,467 7,437,666
Net changes in income taxes 15,240,529 (2,523,100)
Changes in timing and other 1,646,921 2,461,220
Standard measure, end of year $ 31,797,544 $ 85,121,658