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SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) (Tables) | 12 Months Ended
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Sep. 30, 2024
Oil and Gas Disclosure [Abstract] |
Summary of changes in the estimates of net interests in total proved developed and total proved undeveloped reserves of oil, natural gas liquids and natural gas |
| Oil (Bbls)
| Canada |  | United States |  | Total
Proved reserves: |  |  |  |  |
Balance at September 30, 2022 | 846,000 |  |  | 29,000 |  |  | 875,000 |
Revisions of previous estimates | (43,000) |  |  | 19,000 |  |  | (24,000) |
Extensions, discoveries and other additions | 167,000 |  |  | 85,000 |  |  | 252,000 |
Less production | (183,000) |  |  | (21,000) |  |  | (204,000) |
Balance at September 30, 2023 | 787,000 |  |  | 112,000 |  |  | 899,000 |
Revisions of previous estimates | 222,000 |  |  | (3,000) |  |  | 219,000 |
Extensions, discoveries and other additions | 117,000 |  |  | — |  |  | 117,000 |
Acquisitions of reserves | 4,000 |  |  | — |  |  | 4,000 |
Less sales of reserves | (54,000) |  |  | — |  |  | (54,000) |
Less production | (184,000) |  |  | (19,000) |  |  | (203,000) |
Proved Reserves, September 30, 2024 | 892,000 |  |  | 90,000 |  |  | 982,000 |
| NGL (Bbls)
| Canada |  | United States |  | Total
Proved reserves: |  |  |  |  |
Balance at September 30, 2022 | 144,000 |  |  | 61,000 |  |  | 205,000 |
Revisions of previous estimates | 1,000 |  |  | 29,000 |  |  | 30,000 |
Extensions, discoveries and other additions | 32,000 |  |  | 112,000 |  |  | 144,000 |
Less production | (27,000) |  |  | (25,000) |  |  | (52,000) |
Balance at September 30, 2023 | 150,000 |  |  | 177,000 |  |  | 327,000 |
Revisions of previous estimates | 70,000 |  |  | 15,000 |  |  | 85,000 |
Extensions, discoveries and other additions | 15,000 |  |  | — |  |  | 15,000 |
Acquisitions of reserves | 2,000 |  |  | — |  |  | 2,000 |
Less sales of reserves | (2,000) |  |  | — |  |  | (2,000) |
Less production | (36,000) |  |  | (28,000) |  |  | (64,000) |
Proved Reserves, September 30, 2024 | 199,000 |  |  | 164,000 |  |  | 363,000 |
| Natural Gas (Mcf)
| Canada |  | United States |  | Total
Proved reserves: |  |  |  |  |
Balance at September 30, 2022 | 4,519,000 |  |  | 466,000 |  |  | 4,985,000 |
Revisions of previous estimates | 435,000 |  |  | 387,000 |  |  | 822,000 |
Extensions, discoveries and other additions | 1,079,000 |  |  | 1,078,000 |  |  | 2,157,000 |
Less production | (1,023,000) |  |  | (240,000) |  |  | (1,263,000) |
Balance at September 30, 2023 | 5,010,000 |  |  | 1,691,000 |  |  | 6,701,000 |
Revisions of previous estimates | 826,000 |  |  | 82,000 |  |  | 908,000 |
Extensions, discoveries and other additions | 313,000 |  |  | — |  |  | 313,000 |
Acquisitions of reserves | 16,000 |  |  | — |  |  | 16,000 |
Less sales of reserves | (139,000) |  |  | — |  |  | (139,000) |
Less production | (1,085,000) |  |  | (259,000) |  |  | (1,344,000) |
Proved Reserves, September 30, 2024 | 4,941,000 |  |  | 1,514,000 |  |  | 6,455,000 |
| Total Equivalent Reserves (Boe)
| Canada |  | United States |  | Total
Proved reserves: |  |  |  |  |
Balance at September 30, 2022 | 1,769,000 |  |  | 170,000 |  |  | 1,939,000 |
Revisions of previous estimates | 5,000 |  |  | 110,000 |  |  | 115,000 |
Extensions, discoveries and other additions | 379,000 |  |  | 377,000 |  |  | 756,000 |
Less production | (381,000) |  |  | (86,000) |  |  | (467,000) |
Balance at September 30, 2023 | 1,772,000 |  |  | 571,000 |  |  | 2,343,000 |
Revisions of previous estimates | 430,000 |  |  | 27,000 |  |  | 457,000 |
Extensions, discoveries and other additions | 184,000 |  |  | — |  |  | 184,000 |
Acquisitions of reserves | 9,000 |  |  | — |  |  | 9,000 |
Less sales of reserves | (79,000) |  |  | — |  |  | (79,000) |
Less production | (401,000) |  |  | (90,000) |  |  | (491,000) |
Proved Reserves, September 30, 2024 | 1,915,000 |  |  | 508,000 |  |  | 2,423,000 |
The following tables summarize changes in the estimates of Barnwell’s net interests in total proved undeveloped reserves and presents the balances of total proved developed reserves of oil and natural gas liquids and natural gas, which are located in Canada and the U.S. states of Oklahoma and Texas. Proved developed oil and natural gas reserves are proved reserves that can be expected to be recovered through existing wells and equipment in place and under operating methods being utilized at the time the estimates were made.
| Oil (Bbls)
| Canada |  | United States |  | Total
Proved undeveloped reserves: |  |  |  |  |
Balance at September 30, 2023 | 92,000 |  |  | — |  |  | 92,000 |
Conversion to proved developed reserves | (98,000) |  |  | — |  |  | (98,000) |
Revisions of previous estimates | 6,000 |  |  | — |  |  | 6,000 |
Additions due to a new well | 109,000 |  |  | — |  |  | 109,000 |
Proved Undeveloped Reserves, September 30, 2024 | 109,000 |  |  | — |  |  | 109,000 |
Proved Developed Reserves, September 30, 2023 | 695,000 |  |  | 112,000 |  |  | 807,000 |
Proved Developed Reserves, September 30, 2024 | 783,000 |  |  | 90,000 |  |  | 873,000 |
| NGL (Bbls)
| Canada |  | United States |  | Total
Proved undeveloped reserves: |  |  |  |  |
Balance at September 30, 2023 | 18,000 |  |  | — |  |  | 18,000 |
Conversion to proved developed reserves | (10,000) |  |  | — |  |  | (10,000) |
Revisions of previous estimates | (8,000) |  |  | — |  |  | (8,000) |
Additions due to a new well | 23,000 |  |  | — |  |  | 23,000 |
Proved Undeveloped Reserves, September 30, 2024 | 23,000 |  |  | — |  |  | 23,000 |
Proved Developed Reserves, September 30, 2023 | 132,000 |  |  | 177,000 |  |  | 309,000 |
Proved Developed Reserves, September 30, 2024 | 176,000 |  |  | 164,000 |  |  | 340,000 |
| Natural Gas (Mcf)
| Canada |  | United States |  | Total
Proved undeveloped reserves: |  |  |  |  |
Balance at September 30, 2023 | 608,000 |  |  | — |  |  | 608,000 |
Conversion to proved developed reserves | (279,000) |  |  | — |  |  | (279,000) |
Revisions of previous estimates | (330,000) |  |  | — |  |  | (330,000) |
Additions due to a new well | 641,000 |  |  | — |  |  | 641,000 |
Proved Undeveloped Reserves, September 30, 2024 | 640,000 |  |  | — |  |  | 640,000 |
Proved Developed Reserves, September 30, 2023 | 4,402,000 |  |  | 1,691,000 |  |  | 6,093,000 |
Proved Developed Reserves, September 30, 2024 | 4,301,000 |  |  | 1,514,000 |  |  | 5,815,000 |
| Total Equivalent Reserves (Boe)
| Canada |  | United States |  | Total
Proved undeveloped reserves: |  |  |  |  |
Balance at September 30, 2023 | 211,000 |  |  | — |  |  | 211,000 |
Conversion to proved developed reserves | (155,000) |  |  | — |  |  | (155,000) |
Revisions of previous estimates | (56,000) |  |  | — |  |  | (56,000) |
Additions due to a new well | 239,000 |  |  | — |  |  | 239,000 |
Proved Undeveloped Reserves, September 30, 2024 | 239,000 |  |  | — |  |  | 239,000 |
Proved Developed Reserves, September 30, 2023 | 1,561,000 |  |  | 571,000 |  |  | 2,132,000 |
Proved Developed Reserves, September 30, 2024 | 1,676,000 |  |  | 508,000 |  |  | 2,184,000 |
Schedule of capitalized costs relating to oil and natural gas producing activities | All capitalized costs relating to oil and natural gas producing activities in Canada and the U.S. are summarized as follows:
| September 30, 2024
| Canada |  | United States |  | Total
Proved properties | $ | 76,963,000 |  |  | $ | 6,594,000 |  |  | $ | 83,557,000 |
Unproved properties | — |  |  | — |  |  | — |
Total capitalized costs | 76,963,000 |  |  | 6,594,000 |  |  | 83,557,000 |
Accumulated depletion, depreciation, and impairment | 64,402,000 |  |  | 2,601,000 |  |  | 67,003,000 |
Net capitalized costs | $ | 12,561,000 |  |  | $ | 3,993,000 |  |  | $ | 16,554,000 |
| September 30, 2023
| Canada |  | United States |  | Total
Proved properties | $ | 74,440,000 |  |  | $ | 6,411,000 |  |  | $ | 80,851,000 |
Unproved properties | — |  |  | — |  |  | — |
Total capitalized costs | 74,440,000 |  |  | 6,411,000 |  |  | 80,851,000 |
Accumulated depletion, depreciation, and impairment | 58,477,000 |  |  | 1,072,000 |  |  | 59,549,000 |
Net capitalized costs | $ | 15,963,000 |  |  | $ | 5,339,000 |  |  | $ | 21,302,000 |
Schedule of costs incurred in oil and natural gas property acquisition, exploration and development |
| Year ended September 30, 2024
| Canada |  | United States |  | Total
Acquisition of properties: |  |  |  |  |
Proved | $ | 146,000 |  |  | $ | — |  |  | $ | 146,000 |
Unproved | — |  |  | — |  |  | — |
Exploration costs | 34,000 |  |  | — |  |  | 34,000 |
Development costs | 3,865,000 |  |  | 183,000 |  |  | 4,048,000 |
Total | $ | 4,045,000 |  |  | $ | 183,000 |  |  | $ | 4,228,000 |
| Year ended September 30, 2023
| Canada |  | United States |  | Total
Acquisition of properties: |  |  |  |  |
Proved | $ | 66,000 |  |  | $ | — |  |  | $ | 66,000 |
Unproved | — |  |  | — |  |  | — |
Exploration costs | 461,000 |  |  | 255,000 |  |  | 716,000 |
Development costs | 6,331,000 |  |  | 5,099,000 |  |  | 11,430,000 |
Total | $ | 6,858,000 |  |  | $ | 5,354,000 |  |  | $ | 12,212,000 |
Schedule of results of operations for oil and natural gas producing activities |
| Year ended September 30, 2024
| Canada |  | United States |  | Total
Net revenues | $ | 15,093,000 |  |  | $ | 2,303,000 |  |  | $ | 17,396,000 |
Production costs | (9,230,000) |  |  | (619,000) |  |  | (9,849,000) |
Depletion | (4,139,000) |  |  | (808,000) |  |  | (4,947,000) |
Impairment of assets | (2,164,000) |  |  | (721,000) |  |  | (2,885,000) |
Pre-tax results of operations (1) | (440,000) |  |  | 155,000 |  |  | (285,000) |
Estimated income tax expense (2) | 320,000 |  |  | 20,000 |  |  | 340,000 |
Results of operations (1) | $ | (760,000) |  |  | $ | 135,000 |  |  | $ | (625,000) |
| Year ended September 30, 2023
| Canada |  | United States |  | Total
Net revenues | $ | 16,630,000 |  |  | $ | 2,746,000 |  |  | $ | 19,376,000 |
Production costs | (9,859,000) |  |  | (575,000) |  |  | (10,434,000) |
Depletion | (3,600,000) |  |  | (669,000) |  |  | (4,269,000) |
Pre-tax results of operations (1) | 3,171,000 |  |  | 1,502,000 |  |  | 4,673,000 |
Estimated income tax expense (2) | 107,000 |  |  | 44,000 |  |  | 151,000 |
Results of operations (1) | $ | 3,064,000 |  |  | $ | 1,458,000 |  |  | $ | 4,522,000 |
_________________ (1) Before general and administrative expenses, interest expense, and foreign exchange gains and losses. (2) Estimated income tax expense includes changes to the deferred income tax valuation allowance necessary for the portion of Canadian and U.S. federal tax law deferred tax assets that may not be realizable.
Schedule of standardized measure of discounted future net cash flows |
| Year ended September 30, 2024
| Canada |  | United States |  | Total
Future cash inflows | $ | 75,293,000 |  |  | $ | 12,043,000 |  |  | $ | 87,336,000 |
Future production costs | (42,601,000) |  |  | (5,080,000) |  |  | (47,681,000) |
Future development costs | (2,795,000) |  |  | — |  |  | (2,795,000) |
Future income tax expenses | (2,666,000) |  |  | (161,000) |  |  | (2,827,000) |
Future net cash flows excluding abandonment, decommissioning and reclamation | 27,231,000 |  |  | 6,802,000 |  |  | 34,033,000 |
Future abandonment, decommissioning and reclamation | (18,026,000) |  |  | (50,000) |  |  | (18,076,000) |
Future net cash flows | 9,205,000 |  |  | 6,752,000 |  |  | 15,957,000 |
10% annual discount for timing of cash flows | 2,697,000 |  |  | (2,804,000) |  |  | (107,000) |
Standardized measure of discounted future net cash flows | $ | 11,902,000 |  |  | $ | 3,948,000 |  |  | $ | 15,850,000 |
| Year ended September 30, 2023
| Canada |  | United States |  | Total
Future cash inflows | $ | 73,429,000 |  |  | $ | 15,995,000 |  |  | $ | 89,424,000 |
Future production costs | (41,935,000) |  |  | (4,168,000) |  |  | (46,103,000) |
Future development costs | (2,958,000) |  |  | — |  |  | (2,958,000) |
Future income tax expenses | (1,512,000) |  |  | (264,000) |  |  | (1,776,000) |
Future net cash flows excluding abandonment, decommissioning and reclamation | 27,024,000 |  |  | 11,563,000 |  |  | 38,587,000 |
Future abandonment, decommissioning and reclamation | (18,585,000) |  |  | (42,000) |  |  | (18,627,000) |
Future net cash flows | 8,439,000 |  |  | 11,521,000 |  |  | 19,960,000 |
10% annual discount for timing of cash flows | 4,790,000 |  |  | (4,837,000) |  |  | (47,000) |
Standardized measure of discounted future net cash flows | $ | 13,229,000 |  |  | $ | 6,684,000 |  |  | $ | 19,913,000 |
Schedule of changes in standardized measure of discounted future net cash flows |
| Year ended September 30,
| 2024 |  | 2023
Beginning of year | $ | 19,913,000 |  |  | $ | 27,878,000 |
Sales of oil and natural gas produced, net of production costs | (7,547,000) |  |  | (8,942,000) |
Net changes in prices and production costs, net of royalties and wellhead taxes | (12,201,000) |  |  | (11,913,000) |
Extensions and discoveries | 1,725,000 |  |  | 10,767,000 |
Net change due to purchases and sales of minerals in place | (895,000) |  |  | — |
Changes in future development costs | 170,000 |  |  | (2,959,000) |
Revisions of previous quantity estimates | 9,478,000 |  |  | 2,227,000 |
Net change in income taxes | 1,786,000 |  |  | 2,868,000 |
Accretion of discount | 3,359,000 |  |  | 905,000 |
Other - changes in the timing of future production and other | 76,000 |  |  | (1,202,000) |
Other - net change in Canadian dollar translation rate | (14,000) |  |  | 284,000 |
Net change | (4,063,000) |  |  | (7,965,000) |
End of year | $ | 15,850,000 |  |  | $ | 19,913,000 |

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- Definition Tabular disclosure of the aggregate change in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchases under long-term agreements in which the enterprise participates in the operation of the properties on which oil and gas is located or otherwise serves as the producer. + 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 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477916/932-235-55-7 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-34 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 35A -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-35A Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 35 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-35 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 34 -SubTopic 235 -Topic 932 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-34 + Details
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- Definition Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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/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 4: http://www.xbrl.org/2009/role/commonPracticeRef -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 5: http://www.xbrl.org/2009/role/commonPracticeRef -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/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-7 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-8 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-5 + Details
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- Definition Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed. + 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 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477916/932-235-55-6 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-29 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 31 -SubTopic 235 -Topic 932 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-31 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 33 -SubTopic 235 -Topic 932 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-33 + Details
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- Definition Tabular disclosure of information about capitalized cost in oil- and gas-producing activities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 55 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477916/932-235-55-3 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-12 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-13 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-14 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 932 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477215/932-235-50-15 + Details
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