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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Continental Resources Inc | Wyoming | 650,796 BBLs | 2,497,640 MCF | Jan 1993 - May 2025 |
| Continental Resources, Inc. | North Dakota | 5,759,215 BBLs | 19,278,570 MCF | Sep 1978 - May 2025 |
| Cook Inlet Energy, LLC. | Alaska | 120,984 BBLs | 54,074 MCF | Dec 2009 - May 2025 |
| Coral Production Corporation | Kansas | 1,766 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Core Energy LLC | Michigan | 21,877 BBLs | 10,550 MCF | Jan 2006 - May 2025 |
| Cornerstone Natural Resources LLC | North Dakota | 7,623 BBLs | 10,185 MCF | Jan 2007 - May 2025 |
| Coteau Energy LLC | Louisiana | 11,100 BBLs | 72,787 MCF | Aug 2021 - Dec 2024 |
| Coterra Energy Operating Co. | New Mexico | 1,489,256 BBLs | 6,227,158 MCF | Oct 2002 - Apr 2025 |
| Coterra Energy Operating E LLC | New Mexico | 554,907 BBLs | 307,680 MCF | Jan 2023 - Apr 2025 |
| Coterra Energy Operating F LLC | New Mexico | 814,215 BBLs | 2,498,290 MCF | Apr 2019 - Apr 2025 |
| Crawford Production Company | Kansas | 1,533 BBLs | 663 MCF | Jan 1980 - Mar 2025 |
| Creole Operating, LLC | Louisiana | 1,922 BBLs | 11,244 MCF | May 2020 - Dec 2024 |
| Crescent Pass Energy, LLC | Louisiana | 100 BBLs | 90,211 MCF | Aug 2018 - Jan 2025 |
| Crestone Peak Resources Operating LLC | Colorado | 1,127,201 BBLs | 6,723,111 MCF | Aug 2016 - Apr 2025 |
| Crosbys Creek Oil & Gas, LLC | Alabama | 5,492 BBLs | 37,488 MCF | Apr 1982 - Mar 2025 |
| Cross Bar Energy, LLC | Kansas | 2,180 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Cross Timbers Energy, LLC | New Mexico | 27,861 BBLs | 382,524 MCF | Jul 2013 - Apr 2025 |
| Crowheart Energy LLC | Wyoming | 259,029 BBLs | 7,391,156 MCF | Feb 2018 - Apr 2025 |
| Crown Energy Company | Kansas | 2,067 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Curt'S Oil Operation, LLC | Kansas | 5,106 BBLs | 191 MCF | Jan 2010 - Mar 2025 |
| Cypress Operating, Inc | Arkansas | 2,283 BBLs | 0 MCF | Jan 2001 - Jan 2025 |
| Dakota Crude, Inc. | North Dakota | 1,175 BBLs | 0 MCF | May 2003 - May 2025 |
| Dale E. Jackson Production Co. | Kansas | 1,798 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Darrah Oil Company, LLC | Kansas | 13,437 BBLs | 6,710 MCF | Jan 2010 - Mar 2025 |
| Daube Company The | Wyoming | 7,544 BBLs | 450 MCF | Jan 1990 - Apr 2025 |
| Daylight Petroleum LLC | Louisiana | 6,709 BBLs | 21,077 MCF | Feb 2019 - Dec 2024 |
| Daystar Petroleum, Inc. | Kansas | 9,368 BBLs | 9,512 MCF | Jan 1980 - Mar 2025 |
| De Soto Oil Properties, LLC | Alabama | 1,357 BBLs | 1,355 MCF | May 1988 - Mar 2025 |
| Delta Royalties LLC | Louisiana | 2,739 BBLs | 7,275 MCF | Nov 2019 - Dec 2024 |
| Denbury Onshore LLC | Wyoming | 179,335 BBLs | 125,448 MCF | Jan 2011 - May 2025 |
| Denbury Onshore, LLC | Alabama | 19,292 BBLs | 0 MCF | Jan 1956 - Mar 2025 |
| Denbury Onshore, LLC | Louisiana | 76,063 BBLs | 69,845 MCF | Jan 2004 - Dec 2024 |
| Denbury Onshore, LLC | Montana | 276,618 BBLs | 5,466,759 MCF | Jan 2011 - Apr 2025 |
| Denbury Onshore, LLC | North Dakota | 93,367 BBLs | 20,065 MCF | Oct 2007 - May 2025 |
| Desert Eagle Operating LLC | Colorado | 0 BBLs | 52,476 MCF | Jun 2022 - Apr 2025 |
| Deutsch Oil Company | Kansas | 2,728 BBLs | 1,115 MCF | Jan 1980 - Mar 2025 |
| Devon Energy Production Company LP | Wyoming | 758,131 BBLs | 1,223,738 MCF | Jan 1978 - May 2025 |
| Devon Energy Production Company, LP | New Mexico | 7,247,862 BBLs | 33,710,518 MCF | Jan 1993 - Apr 2025 |
| Devon Energy Williston, L.L.C. | Montana | 4,565 BBLs | 11,529 MCF | Apr 2021 - Apr 2025 |
| DGH Oil, LLC | Kansas | 3,505 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| DHP Investments, LTD. | Kansas | 1,172 BBLs | 0 MCF | Mar 2008 - Mar 2025 |
| Diamond Oil & Gas LLC | Wyoming | 733 BBLs | 14,280 MCF | Oct 2011 - May 2025 |
| Diehl Oil Inc | Kansas | 2,124 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Digital Operating Company LLC | Montana | 2,215 BBLs | 153 MCF | Jun 2021 - Apr 2025 |
| Diversified Production LLC | Louisiana | 8,836 BBLs | 3,242,940 MCF | May 2021 - Dec 2024 |
| Dixon Operating Company, LLC | Kansas | 9,950 BBLs | 42,764 MCF | Jan 2010 - Mar 2025 |
| DJR Operating, LLC | New Mexico | 597,635 BBLs | 1,425,390 MCF | Nov 2017 - Apr 2025 |
| Dorcheat Oil & Gas, LLC | Louisiana | 245 BBLs | 35,651 MCF | Mar 2016 - Dec 2024 |
| Double Eagle Exploration, Inc. | Kansas | 1,277 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Downing-Nelson Oil Co Inc | Kansas | 20,503 BBLs | 0 MCF | Jan 1980 - Mar 2025 |