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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Citation Oil & Gas Corp. | Montana | 16,580 BBLs | 860 MCF | Jan 1991 - Aug 2026 |
| Continental Resources Inc | Montana | 155,337 BBLs | 346,448 MCF | Jan 1991 - Aug 2026 |
| Darrah Oil Company, LLC | Montana | 783 BBLs | 0 MCF | Sep 2007 - Aug 2026 |
| Devon Energy Williston, L.L.C. | Montana | 183,337 BBLs | 168,436 MCF | Apr 2021 - Aug 2026 |
| Digital Operating Company LLC | Montana | 0 BBLs | 0 MCF | Jun 2021 - Jul 2026 |
| Foundation Energy Management, LLC | Montana | 1,062 BBLs | 691 MCF | Jan 2016 - Aug 2026 |
| Genesis St Operating LLC | Montana | 0 BBLs | 0 MCF | May 1992 - Aug 2026 |
| Granite Creek Energy LLC | Montana | 10,801 BBLs | 5,597 MCF | Mar 2024 - Aug 2026 |
| Green Valley Operating, LLC | Montana | 2,091 BBLs | 2,323 MCF | Jun 2022 - Aug 2026 |
| HK Eagle LLC | Montana | 1,276 BBLs | 0 MCF | Sep 2025 - Aug 2026 |
| Kraken Operating, LLC | Montana | 713,984 BBLs | 1,246,438 MCF | Sep 2013 - Jul 2026 |
| Missouri River Royalty Corporation | Montana | 387 BBLs | 0 MCF | Jan 1991 - Jul 2026 |
| Oasis Petroleum North America LLC | Montana | 57,459 BBLs | 80,418 MCF | Mar 2007 - Aug 2026 |
| Phoenix Operating LLC | Montana | 31,299 BBLs | 68,827 MCF | Nov 2024 - Aug 2026 |
| Prima Exploration, Inc. | Montana | 25,316 BBLs | 37,008 MCF | Jan 1991 - Aug 2026 |
| R3 Operating Corporation | Montana | 4,981 BBLs | 338 MCF | May 2024 - Aug 2026 |
| Ridge Energy, LLC | Montana | 5,032 BBLs | 770,433 MCF | Feb 2022 - Aug 2026 |
| Samson Oil And Gas USA, Inc. | Montana | 8,874 BBLs | 4,810 MCF | May 2012 - Aug 2026 |
| Sinclair Oil & Gas Company | Montana | 214 BBLs | 224 MCF | Dec 1995 - Jul 2026 |
| Slawson Exploration Company Inc | Montana | 9,266 BBLs | 21,664 MCF | Jun 1993 - Aug 2026 |
| Stearns Oil Company LLC | Montana | 454 BBLs | 279 MCF | Mar 2022 - Aug 2026 |
| True Oil LLC | Montana | 6,231 BBLs | 4,723 MCF | Jan 1986 - Aug 2026 |
| Vecta Oil & Gas, LTD. | Montana | 581 BBLs | 0 MCF | Feb 2013 - Aug 2026 |
| White Rock Oil & Gas, LLC | Montana | 188,112 BBLs | 167,707 MCF | Jan 2015 - Aug 2026 |