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SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) - PROVED RESERVES (Details) bbl in Thousands, Mcf in Thousands, Boe in Thousands | 12 Months Ended
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Sep. 30, 2024 Boe bbl Mcf | Sep. 30, 2023 Boe bbl Mcf
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Boe | 2,343 | 1,939
Revisions of previous estimates | Boe | 457 | 115
Extensions, discoveries and other additions | Boe | 184 | 756
Acquisitions of reserves | Boe | 9 |
Less sales of reserves | Boe | (79) |
Less production | Boe | (491) | (467)
Balance at the end of the period | Boe | 2,423 | 2,343
Canada |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Boe | 1,772 | 1,769
Revisions of previous estimates | Boe | 430 | 5
Extensions, discoveries and other additions | Boe | 184 | 379
Acquisitions of reserves | Boe | 9 |
Less sales of reserves | Boe | (79) |
Less production | Boe | (401) | (381)
Balance at the end of the period | Boe | 1,915 | 1,772
United States |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Boe | 571 | 170
Revisions of previous estimates | Boe | 27 | 110
Extensions, discoveries and other additions | Boe | 0 | 377
Acquisitions of reserves | Boe | 0 |
Less sales of reserves | Boe | 0 |
Less production | Boe | (90) | (86)
Balance at the end of the period | Boe | 508 | 571
Oil |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 899 | 875
Revisions of previous estimates | 219 | (24)
Extensions, discoveries and other additions | 117 | 252
Acquisitions of reserves | 4 |
Less sales of reserves | (54) |
Less production | (203) | (204)
Balance at the end of the period | 982 | 899
Oil | Canada |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 787 | 846
Revisions of previous estimates | 222 | (43)
Extensions, discoveries and other additions | 117 | 167
Acquisitions of reserves | 4 |
Less sales of reserves | (54) |
Less production | (184) | (183)
Balance at the end of the period | 892 | 787
Oil | United States |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 112 | 29
Revisions of previous estimates | (3) | 19
Extensions, discoveries and other additions | 0 | 85
Acquisitions of reserves | 0 |
Less sales of reserves | 0 |
Less production | (19) | (21)
Balance at the end of the period | 90 | 112
Natural gas liquids |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 327 | 205
Revisions of previous estimates | 85 | 30
Extensions, discoveries and other additions | 15 | 144
Acquisitions of reserves | 2 |
Less sales of reserves | (2) |
Less production | (64) | (52)
Balance at the end of the period | 363 | 327
Natural gas liquids | Canada |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 150 | 144
Revisions of previous estimates | 70 | 1
Extensions, discoveries and other additions | 15 | 32
Acquisitions of reserves | 2 |
Less sales of reserves | (2) |
Less production | (36) | (27)
Balance at the end of the period | 199 | 150
Natural gas liquids | United States |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | 177 | 61
Revisions of previous estimates | 15 | 29
Extensions, discoveries and other additions | 0 | 112
Acquisitions of reserves | 0 |
Less sales of reserves | 0 |
Less production | (28) | (25)
Balance at the end of the period | 164 | 177
Natural gas |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Mcf | 6,701 | 4,985
Revisions of previous estimates | Mcf | 908 | 822
Extensions, discoveries and other additions | Mcf | 313 | 2,157
Acquisitions of reserves | Mcf | 16 |
Less sales of reserves | Mcf | (139) |
Less production | Mcf | (1,344) | (1,263)
Balance at the end of the period | Mcf | 6,455 | 6,701
Natural gas | Canada |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Mcf | 5,010 | 4,519
Revisions of previous estimates | Mcf | 826 | 435
Extensions, discoveries and other additions | Mcf | 313 | 1,079
Acquisitions of reserves | Mcf | 16 |
Less sales of reserves | Mcf | (139) |
Less production | Mcf | (1,085) | (1,023)
Balance at the end of the period | Mcf | 4,941 | 5,010
Natural gas | United States |  |
Changes in the estimates of net interests in total proved reserves of oil, natural gas liquids and natural gas |  |
Balance at the beginning of the period | Mcf | 1,691 | 466
Revisions of previous estimates | Mcf | 82 | 387
Extensions, discoveries and other additions | Mcf | 0 | 1,078
Acquisitions of reserves | Mcf | 0 |
Less sales of reserves | Mcf | 0 |
Less production | Mcf | (259) | (240)
Balance at the end of the period | Mcf | 1,514 | 1,691

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- Definition Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Form 20-F -Number Part II -Section Item 18 -Subparagraph (Instruction 2) -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477916/932-235-55-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-8 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-8 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-5 + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Form 20-F -Number Part II -Section Item 18 -Subparagraph (Instruction 2) -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477916/932-235-55-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-8 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-8 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-4 + Details
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