Summary of Changes in Standardized Measure of Discounted Future Net Cash Flows

Year ended September 30

2025

2024

Present value of estimated future net revenue, beginning of year

$72,000

$66,000

Sales, net of production costs

(16,000)

(20,000)

Net change in prices and cost of future production

(8,900)

-

Revisions of quantity estimates

24,000

29,000

Accretion of discount

8,000

7,000

Change in production rates and other

(8,100)

(10,000)

Present value of estimated future net revenue, end of year

$71,000

$72,000