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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Armstrong Operating, Inc. | Montana | 1,254 BBLs | 47 MCF | Feb 1995 - Aug 2026 |
| Chaco Energy Company | Montana | 2,273 BBLs | 0 MCF | May 1996 - Jul 2026 |
| 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 |
| 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 |
| Empire North Dakota LLC | Montana | 3,186 BBLs | 0 MCF | Jul 2019 - Jul 2026 |
| Genesis St Operating LLC | Montana | 0 BBLs | 0 MCF | May 1992 - Aug 2026 |
| Kraken Operating, LLC | Montana | 713,984 BBLs | 1,246,438 MCF | Sep 2013 - Jul 2026 |
| Montana Heartland LLC | Montana | 1 BBLs | 1,385 MCF | Jun 1991 - Jul 2026 |
| Morningstar Operating LLC | Montana | 268,459 BBLs | 437,710 MCF | Jan 2024 - Jul 2026 |
| Murex Petroleum Corp. | Montana | 0 BBLs | 0 MCF | Jan 2001 - Aug 2026 |
| Oasis Petroleum North America LLC | Montana | 57,459 BBLs | 80,418 MCF | Mar 2007 - Aug 2026 |
| Petro-Hunt, LLC | Montana | 28,285 BBLs | 29,319 MCF | Jan 1991 - Jul 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 |
| Ramhorn Energy, LLC | Montana | 223 BBLs | 0 MCF | Dec 2019 - Aug 2026 |
| Ridge Energy, LLC | Montana | 5,032 BBLs | 770,433 MCF | Feb 2022 - Aug 2026 |
| Rim Operating, Inc. | Montana | 6,984 BBLs | 3,605 MCF | Jan 1991 - 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 |
| Stalking Horse Energy, LLC | Montana | 532 BBLs | 0 MCF | Jan 2022 - Jul 2026 |
| Swanson Oil & Gas LLC | Montana | 2,217 BBLs | 7,840 MCF | Mar 2025 - Jul 2026 |
| True Oil LLC | Montana | 6,231 BBLs | 4,723 MCF | Jan 1986 - Aug 2026 |
| Wesco Operating, Inc. | Montana | 4,866 BBLs | 2,453 MCF | Jun 1999 - Aug 2026 |
| White Rock Oil & Gas, LLC | Montana | 188,112 BBLs | 167,707 MCF | Jan 2015 - Aug 2026 |
| Whiting Oil And Gas Corporation | Montana | 34,414 BBLs | 44,466 MCF | Oct 2003 - Aug 2026 |