Note 11 - Supplemental Financial Data - Oil and Gas Producing Activities (Unaudited): Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities (Tables)

12 Months Ended

Sep. 30, 2025

Tables/Schedules

Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities

Estimated Quantities of Reserves
	Oil in Barrels
Balance at September 30, 2023	1,600
Revisions of previous estimates	700
Production	(300)
Balance at September 30, 2024	2,000
Revisions of previous estimates	700
Production	(300)
Balance at September 30, 2025	2,400