Note 8 - Oil and Gas Exploration and Production Industries Disclosures: Summary of Changes Present Value of Estimated Future Net Revenue (Tables)

12 Months Ended

Sep. 30, 2019

Tables/Schedules

Summary of Changes Present Value of Estimated Future Net Revenue

	Year ended September 30
	2019	2018
Present value of estimated future net revenue, beginning of year	$                120,000	$                  71,000
Sales, net of production costs	(52,000)	(59,000)
Net change in prices and cost of future production	(12,000)	75,000
Revisions of quantity estimates	(25,000)	19,000
Accretion of discount	12,000	8,000
Change in production rates and other	15,000	6,000
Present value of estimated future net revenue, end of year	$                  58,000	$                120,000