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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Compass Energy Operating, LLC | Louisiana | 138 BBLs | 869,300 MCF | Jul 2014 - Jan 2025 |
| Comstock Oil & Gas--La, LLC | Louisiana | 690 BBLs | 39,125,046 MCF | Apr 2005 - Dec 2024 |
| Connell, Mark Allen | Kansas | 1,129 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Conocophillips Alaska, Inc. | Alaska | 4,014,859 BBLs | 8,699,711 MCF | Dec 1963 - Jul 2025 |
| Conocophillips Company | New Mexico | 795,123 BBLs | 3,329,822 MCF | Jan 2003 - Jul 2025 |
| Contango Resources LLC | Wyoming | 393,568 BBLs | 10,582,134 MCF | Feb 2020 - Jul 2025 |
| Contango Resources, Inc. | Montana | 17,583 BBLs | 39,201 MCF | Dec 2020 - Aug 2025 |
| Continental Resources Inc | Montana | 167,273 BBLs | 304,156 MCF | Jan 1991 - Jul 2025 |
| Continental Resources Inc | Wyoming | 815,139 BBLs | 2,684,436 MCF | Jan 1993 - Jul 2025 |
| Continental Resources, Inc. | North Dakota | 6,163,606 BBLs | 20,221,824 MCF | Sep 1978 - Jul 2025 |
| Cook Inlet Energy, LLC. | Alaska | 109,725 BBLs | 34,537 MCF | Dec 2009 - Jul 2025 |
| Coral Production Corporation | Kansas | 2,867 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Core Energy LLC | Michigan | 27,712 BBLs | 10,659 MCF | Jan 2006 - Jun 2025 |
| Cornerstone Natural Resources LLC | North Dakota | 8,409 BBLs | 11,980 MCF | Jan 2007 - Jul 2025 |
| Coteau Energy LLC | Louisiana | 11,100 BBLs | 72,787 MCF | Aug 2021 - Dec 2024 |
| Coterra Energy Operating Co. | New Mexico | 1,644,277 BBLs | 7,623,186 MCF | Oct 2002 - Jun 2025 |
| Coterra Energy Operating E LLC | New Mexico | 437,831 BBLs | 504,191 MCF | Jan 2023 - Jun 2025 |
| Coterra Energy Operating F LLC | New Mexico | 1,014,098 BBLs | 3,233,809 MCF | Apr 2019 - Jun 2025 |
| Crawford Production Company | Kansas | 2,630 BBLs | 686 MCF | Jan 1980 - May 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 | 1,615,116 BBLs | 6,979,944 MCF | Aug 2016 - Jul 2025 |
| Crosbys Creek Oil & Gas, LLC | Alabama | 7,508 BBLs | 50,200 MCF | Apr 1982 - Jun 2025 |
| Cross Bar Energy, LLC | Kansas | 3,295 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Cross Timbers Energy, LLC | New Mexico | 26,664 BBLs | 394,149 MCF | Jul 2013 - Jun 2025 |
| Crowheart Energy LLC | Wyoming | 243,970 BBLs | 8,152,846 MCF | Feb 2018 - Jun 2025 |
| Crown Energy Company | Kansas | 1,943 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Cumberland Operating LLC | Wyoming | 250 BBLs | 19,041 MCF | Oct 2015 - Jul 2025 |
| Curt'S Oil Operation, LLC | Kansas | 4,450 BBLs | 2,658 MCF | Jan 2010 - May 2025 |
| D & Z Exploration, Inc. | Kansas | 1,195 BBLs | 0 MCF | Jul 1985 - May 2025 |
| Dakota Crude, Inc. | North Dakota | 1,177 BBLs | 0 MCF | May 2003 - Jul 2025 |
| Dale E. Jackson Production Co. | Kansas | 1,788 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Darrah Oil Company, LLC | Kansas | 19,842 BBLs | 7,719 MCF | Jan 2010 - May 2025 |
| Daube Company The | Wyoming | 7,715 BBLs | 450 MCF | Jan 1990 - Jul 2025 |
| Daylight Petroleum LLC | Louisiana | 6,709 BBLs | 21,077 MCF | Feb 2019 - Dec 2024 |
| Daystar Petroleum, Inc. | Kansas | 10,985 BBLs | 13,323 MCF | Jan 1980 - May 2025 |
| De Soto Oil Properties, LLC | Alabama | 1,658 BBLs | 1,481 MCF | May 1988 - Jun 2025 |
| Delta Royalties LLC | Louisiana | 2,739 BBLs | 7,275 MCF | Nov 2019 - Dec 2024 |
| Denbury Onshore LLC | Wyoming | 172,711 BBLs | 124,363 MCF | Jan 2011 - Jul 2025 |
| Denbury Onshore, LLC | Alabama | 22,377 BBLs | 0 MCF | Jan 1956 - Jun 2025 |
| Denbury Onshore, LLC | Louisiana | 76,063 BBLs | 69,845 MCF | Jan 2004 - Dec 2024 |
| Denbury Onshore, LLC | Mississippi | 188,731 BBLs | 343,931 MCF | Jun 1971 - Jun 2025 |
| Denbury Onshore, LLC | Montana | 244,325 BBLs | 4,515,027 MCF | Jan 2011 - Jul 2025 |
| Denbury Onshore, LLC | North Dakota | 89,770 BBLs | 18,624 MCF | Oct 2007 - Jul 2025 |
| Desert Eagle Operating LLC | Colorado | 0 BBLs | 63,058 MCF | Jun 2022 - Jul 2025 |
| Deutsch Oil Company | Kansas | 3,931 BBLs | 1,026 MCF | Jan 1980 - May 2025 |
| Devon Energy Production Company LP | Wyoming | 698,416 BBLs | 1,166,198 MCF | Jan 1978 - Jul 2025 |
| Devon Energy Production Company, LP | New Mexico | 6,049,860 BBLs | 31,208,791 MCF | Jan 1993 - Jun 2025 |
| Devon Energy Williston, L.L.C. | Montana | 107,902 BBLs | 99,619 MCF | Apr 2021 - Jul 2025 |
| DGH Oil, LLC | Kansas | 4,353 BBLs | 0 MCF | Jan 1980 - May 2025 |