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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Armstrong Operating, Inc. | Montana | 757 BBLs | 48 MCF | Feb 1995 - Oct 2025 |
| Citation Oil & Gas Corp. | Montana | 16,445 BBLs | 961 MCF | Jan 1991 - Oct 2025 |
| Continental Resources Inc | Montana | 235,616 BBLs | 364,746 MCF | Jan 1991 - Oct 2025 |
| Digital Operating Company LLC | Montana | 1,231 BBLs | 0 MCF | Jun 2021 - Oct 2025 |
| Kraken Operating, LLC | Montana | 996,166 BBLs | 1,453,949 MCF | Sep 2013 - Oct 2025 |
| Morningstar Operating LLC | Montana | 316,325 BBLs | 449,571 MCF | Jan 2024 - Oct 2025 |
| Murex Petroleum Corp. | Montana | 42 BBLs | 0 MCF | Jan 2001 - Oct 2025 |
| Oasis Petroleum North America LLC | Montana | 45,102 BBLs | 40,459 MCF | Mar 2007 - Oct 2025 |
| Prima Exploration, Inc. | Montana | 42,542 BBLs | 47,558 MCF | Jan 1991 - Oct 2025 |
| R3 Operating Corporation | Montana | 5,228 BBLs | 1,880 MCF | May 2024 - Oct 2025 |
| Ramhorn Energy, LLC | Montana | 148 BBLs | 0 MCF | Dec 2019 - Oct 2025 |
| Rim Operating, Inc. | Montana | 4,982 BBLs | 2,383 MCF | Jan 1991 - Oct 2025 |
| Samson Oil And Gas USA, Inc. | Montana | 6,699 BBLs | 3,963 MCF | May 2012 - Oct 2025 |
| Sinclair Oil & Gas Company | Montana | 1,430 BBLs | 1,939 MCF | Dec 1995 - Oct 2025 |
| Slawson Exploration Company Inc | Montana | 12,954 BBLs | 26,621 MCF | Jun 1993 - Oct 2025 |
| Swanson Oil & Gas LLC | Montana | 486 BBLs | 606 MCF | Mar 2025 - Oct 2025 |
| True Oil LLC | Montana | 10,289 BBLs | 11,103 MCF | Jan 1986 - Oct 2025 |
| Wesco Operating, Inc. | Montana | 4,692 BBLs | 1,288 MCF | Jun 1999 - Oct 2025 |
| White Rock Oil & Gas, LLC | Montana | 115,929 BBLs | 127,209 MCF | Jan 2015 - Oct 2025 |
| Whiting Oil And Gas Corporation | Montana | 30,472 BBLs | 41,200 MCF | Oct 2003 - Oct 2025 |