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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Armstrong Operating, Inc. | Montana | 742 BBLs | 22 MCF | Feb 1995 - Jan 2025 |
| Citation Oil & Gas Corp. | Montana | 18,131 BBLs | 817 MCF | Jan 1991 - Jan 2025 |
| Continental Resources Inc | Montana | 126,226 BBLs | 262,781 MCF | Jan 1991 - Jan 2025 |
| CWT Operating, LLC | Montana | 1,457 BBLs | 312 MCF | Dec 2021 - Jan 2025 |
| Darrah Oil Company, LLC | Montana | 0 BBLs | 0 MCF | Sep 2007 - Jan 2025 |
| Devon Energy Williston, L.L.C. | Montana | 5,988 BBLs | 14,582 MCF | Apr 2021 - Jan 2025 |
| Foundation Energy Management, LLC | Montana | 1,267 BBLs | 812 MCF | Jan 2016 - Jan 2025 |
| Genesis St Operating LLC | Montana | 0 BBLs | 0 MCF | May 1992 - Jan 2025 |
| Granite Creek Energy LLC | Montana | 8,642 BBLs | 6,542 MCF | Mar 2024 - Jan 2025 |
| Green Valley Operating, LLC | Montana | 1,701 BBLs | 788 MCF | Jun 2022 - Jan 2025 |
| Kraken Operating, LLC | Montana | 951,341 BBLs | 1,248,710 MCF | Sep 2013 - Jan 2025 |
| Nautilus Poplar LLC | Montana | 4,041 BBLs | 0 MCF | Jun 2007 - Jan 2025 |
| Oasis Petroleum North America LLC | Montana | 43,930 BBLs | 63,663 MCF | Mar 2007 - Jan 2025 |
| Prima Exploration, Inc. | Montana | 61,171 BBLs | 64,656 MCF | Jan 1991 - Jan 2025 |
| Ridge Oil & Gas, LLC | Montana | 6,778 BBLs | 1,727 MCF | Feb 2022 - Jan 2025 |
| Sinclair Oil & Gas Company | Montana | 2,810 BBLs | 3,223 MCF | Dec 1995 - Jan 2025 |
| Slawson Exploration Company Inc | Montana | 15,013 BBLs | 38,572 MCF | Jun 1993 - Jan 2025 |
| Stearns Oil Company LLC | Montana | 139 BBLs | 93 MCF | Mar 2022 - Jan 2025 |
| True Oil LLC | Montana | 27,543 BBLs | 30,496 MCF | Jan 1986 - Jan 2025 |
| Vecta Oil & Gas, LTD. | Montana | 485 BBLs | 0 MCF | Feb 2013 - Jan 2025 |
| White Rock Oil & Gas, LLC | Montana | 358,987 BBLs | 395,355 MCF | Jan 2015 - Jan 2025 |
| Whiting Oil And Gas Corporation | Montana | 35,964 BBLs | 46,127 MCF | Oct 2003 - Jan 2025 |