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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Armstrong Operating, Inc. | Montana | 58 BBLs | 2 MCF | Feb 1995 - Feb 2025 |
| Citation Oil & Gas Corp. | Montana | 15,222 BBLs | 652 MCF | Jan 1991 - Feb 2025 |
| Continental Resources Inc | Montana | 110,775 BBLs | 225,373 MCF | Jan 1991 - Feb 2025 |
| CWT Operating, LLC | Montana | 1,047 BBLs | 50 MCF | Dec 2021 - Feb 2025 |
| Darrah Oil Company, LLC | Montana | 0 BBLs | 0 MCF | Sep 2007 - Feb 2025 |
| Devon Energy Williston, L.L.C. | Montana | 4,877 BBLs | 10,458 MCF | Apr 2021 - Feb 2025 |
| Digital Operating Company LLC | Montana | 1,539 BBLs | 179 MCF | Jun 2021 - Feb 2025 |
| Foundation Energy Management, LLC | Montana | 416 BBLs | 310 MCF | Jan 2016 - Feb 2025 |
| Granite Creek Energy LLC | Montana | 8,495 BBLs | 6,567 MCF | Mar 2024 - Feb 2025 |
| Green Valley Operating, LLC | Montana | 738 BBLs | 504 MCF | Jun 2022 - Feb 2025 |
| Kraken Operating, LLC | Montana | 813,567 BBLs | 1,113,304 MCF | Sep 2013 - Feb 2025 |
| Missouri River Royalty Corporation | Montana | 357 BBLs | 0 MCF | Jan 1991 - Feb 2025 |
| Nautilus Poplar LLC | Montana | 4,571 BBLs | 0 MCF | Jun 2007 - Feb 2025 |
| Oasis Petroleum North America LLC | Montana | 36,919 BBLs | 47,339 MCF | Mar 2007 - Feb 2025 |
| Prima Exploration, Inc. | Montana | 61,272 BBLs | 65,156 MCF | Jan 1991 - Feb 2025 |
| Ridge Oil & Gas, LLC | Montana | 4,084 BBLs | 854 MCF | Feb 2022 - Feb 2025 |
| Samson Oil And Gas USA, Inc. | Montana | 5,809 BBLs | 3,151 MCF | May 2012 - Feb 2025 |
| Sinclair Oil & Gas Company | Montana | 2,309 BBLs | 20,864 MCF | Dec 1995 - Feb 2025 |
| Slawson Exploration Company Inc | Montana | 13,891 BBLs | 30,127 MCF | Jun 1993 - Feb 2025 |
| Stearns Oil Company LLC | Montana | 10 BBLs | 9 MCF | Mar 2022 - Feb 2025 |
| True Oil LLC | Montana | 26,650 BBLs | 34,468 MCF | Jan 1986 - Feb 2025 |
| Vecta Oil & Gas, LTD. | Montana | 320 BBLs | 0 MCF | Feb 2013 - Feb 2025 |
| White Rock Oil & Gas, LLC | Montana | 349,772 BBLs | 357,094 MCF | Jan 2015 - Feb 2025 |
| Whiting Oil And Gas Corporation | Montana | 31,914 BBLs | 40,883 MCF | Oct 2003 - Feb 2025 |