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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| BBX Operating Co. LLC | Montana | 5 BBLs | 0 MCF | Apr 2000 - Apr 2026 |
| Citation Oil & Gas Corp. | Montana | 16,399 BBLs | 849 MCF | Jan 1991 - Apr 2026 |
| Continental Resources Inc | Montana | 153,491 BBLs | 305,968 MCF | Jan 1991 - Apr 2026 |
| Darrah Oil Company, LLC | Montana | 753 BBLs | 0 MCF | Sep 2007 - Apr 2026 |
| Devon Energy Williston, L.L.C. | Montana | 215,090 BBLs | 232,759 MCF | Apr 2021 - Apr 2026 |
| Digital Operating Company LLC | Montana | 167 BBLs | 0 MCF | Jun 2021 - Apr 2026 |
| Foundation Energy Management, LLC | Montana | 1,253 BBLs | 794 MCF | Jan 2016 - Apr 2026 |
| Granite Creek Energy LLC | Montana | 7,904 BBLs | 4,299 MCF | Mar 2024 - Apr 2026 |
| Green Valley Operating, LLC | Montana | 2,795 BBLs | 1,899 MCF | Jun 2022 - Apr 2026 |
| HK Eagle LLC | Montana | 1,509 BBLs | 0 MCF | Sep 2025 - Apr 2026 |
| Kraken Operating, LLC | Montana | 863,679 BBLs | 1,299,772 MCF | Sep 2013 - Apr 2026 |
| Oasis Petroleum North America LLC | Montana | 65,575 BBLs | 66,621 MCF | Mar 2007 - Apr 2026 |
| Phoenix Operating LLC | Montana | 51,228 BBLs | 97,535 MCF | Nov 2024 - Apr 2026 |
| Prima Exploration, Inc. | Montana | 48,573 BBLs | 79,532 MCF | Jan 1991 - Apr 2026 |
| R3 Operating Corporation | Montana | 4,979 BBLs | 443 MCF | May 2024 - Apr 2026 |
| Ridge Oil & Gas, LLC | Montana | 5,575 BBLs | 753,796 MCF | Feb 2022 - Apr 2026 |
| Samson Oil And Gas USA, Inc. | Montana | 8,710 BBLs | 4,961 MCF | May 2012 - Apr 2026 |
| Sinclair Oil & Gas Company | Montana | 867 BBLs | 1,823 MCF | Dec 1995 - Apr 2026 |
| Slawson Exploration Company Inc | Montana | 13,555 BBLs | 33,949 MCF | Jun 1993 - Apr 2026 |
| True Oil LLC | Montana | 5,941 BBLs | 4,142 MCF | Jan 1986 - Apr 2026 |
| White Rock Oil & Gas, LLC | Montana | 197,739 BBLs | 152,351 MCF | Jan 2015 - Apr 2026 |