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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Armstrong Operating, Inc. | Montana | 1,666 BBLs | 44 MCF | Feb 1995 - Jun 2025 |
| Citation Oil & Gas Corp. | Montana | 15,504 BBLs | 1,034 MCF | Jan 1991 - Jun 2025 |
| Continental Resources Inc | Montana | 144,201 BBLs | 277,934 MCF | Jan 1991 - Jun 2025 |
| Devon Energy Williston, L.L.C. | Montana | 4,925 BBLs | 11,341 MCF | Apr 2021 - Jun 2025 |
| Digital Operating Company LLC | Montana | 2,188 BBLs | 931 MCF | Jun 2021 - Jun 2025 |
| Empire North Dakota LLC | Montana | 3,588 BBLs | 1,260 MCF | Jul 2019 - Jun 2025 |
| Genesis St Operating LLC | Montana | 0 BBLs | 0 MCF | May 1992 - Jul 2025 |
| Kraken Operating, LLC | Montana | 1,035,224 BBLs | 1,418,272 MCF | Sep 2013 - Jun 2025 |
| Montana Heartland LLC | Montana | 485 BBLs | 1,279 MCF | Jun 1991 - Jun 2025 |
| Morningstar Operating LLC | Montana | 114,574 BBLs | 206,584 MCF | Jan 2024 - Jun 2025 |
| Murex Petroleum Corp. | Montana | 59 BBLs | 0 MCF | Jan 2001 - Jun 2025 |
| Oasis Petroleum North America LLC | Montana | 41,907 BBLs | 56,168 MCF | Mar 2007 - Jun 2025 |
| Petro-Hunt, LLC | Montana | 33,328 BBLs | 37,251 MCF | Jan 1991 - Jun 2025 |
| Prima Exploration, Inc. | Montana | 21,323 BBLs | 27,671 MCF | Jan 1991 - Jun 2025 |
| Ramhorn Energy, LLC | Montana | 144 BBLs | 0 MCF | Dec 2019 - Jun 2025 |
| Ridge Oil & Gas, LLC | Montana | 5,720 BBLs | 793,653 MCF | Feb 2022 - Jun 2025 |
| Rim Operating, Inc. | Montana | 6,424 BBLs | 2,781 MCF | Jan 1991 - Jun 2025 |
| Samson Oil And Gas USA, Inc. | Montana | 9,124 BBLs | 5,296 MCF | May 2012 - Jun 2025 |
| Sinclair Oil & Gas Company | Montana | 2,026 BBLs | 3,477 MCF | Dec 1995 - Jun 2025 |
| Slawson Exploration Company Inc | Montana | 14,987 BBLs | 40,157 MCF | Jun 1993 - Jun 2025 |
| Stalking Horse Energy, LLC | Montana | 663 BBLs | 0 MCF | Jan 2022 - Jun 2025 |
| Swanson Oil & Gas LLC | Montana | 840 BBLs | 3,233 MCF | Mar 2025 - Jun 2025 |
| T2 Operating Corporation | Montana | 4,634 BBLs | 2,732 MCF | Jun 2024 - Jun 2025 |
| True Oil LLC | Montana | 11,397 BBLs | 13,496 MCF | Jan 1986 - Jun 2025 |
| Wesco Operating, Inc. | Montana | 5,199 BBLs | 2,319 MCF | Jun 1999 - Jun 2025 |
| White Rock Oil & Gas, LLC | Montana | 1,620 BBLs | 2,615 MCF | Jan 2015 - Jun 2025 |
| Whiting Oil And Gas Corporation | Montana | 33,315 BBLs | 46,162 MCF | Oct 2003 - Jun 2025 |