Note 10 - Supplemental Financial Data - Oil and Gas Producing Activities (Unaudited): Summary of Changes Present Value of Estimated Future Net Revenue (Tables)

12 Months Ended

Sep. 30, 2023

Tables/Schedules

Summary of Changes Present Value of Estimated Future Net Revenue

Summary of Changes in Standardized Measure of Discounted Future Net Cash Flows
	Year ended September 30,
	2023	2022
Present value of estimated future net revenue, beginning of year	$68,000	$33,000
Sales, net of production costs	(28,000)	(33,000)
Net change in prices and cost of future production	(14,000)	24,000
Revisions of quantity estimates	33,000	42,000
Accretion of discount	7,000	4,000
Change in production rates and other	-	(2,000)
Present value of estimated future net revenue, end of year	$66,000	$68,000