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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 |
| Conocophillips Alaska, Inc. | Alaska | 4,162,336 BBLs | 8,988,525 MCF | Dec 1963 - Aug 2025 |
| Conocophillips Company | New Mexico | 830,586 BBLs | 3,597,818 MCF | Jan 2003 - Aug 2025 |
| Contango Resources LLC | Wyoming | 388,536 BBLs | 9,095,355 MCF | Feb 2020 - Aug 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 | 777,532 BBLs | 2,732,209 MCF | Jan 1993 - Aug 2025 |
| Continental Resources, Inc. | North Dakota | 6,346,240 BBLs | 20,832,535 MCF | Sep 1978 - Aug 2025 |
| Cook Inlet Energy, LLC. | Alaska | 109,002 BBLs | 45,974 MCF | Dec 2009 - Aug 2025 |
| Coral Production Corporation | Kansas | 2,398 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Core Energy LLC | Michigan | 28,327 BBLs | 12,326 MCF | Jan 2006 - Aug 2025 |
| Cornerstone Natural Resources LLC | North Dakota | 8,224 BBLs | 11,853 MCF | Jan 2007 - Aug 2025 |
| Coteau Energy LLC | Louisiana | 11,100 BBLs | 72,787 MCF | Aug 2021 - Dec 2024 |
| Coterra Energy Operating Co. | New Mexico | 1,609,279 BBLs | 8,020,873 MCF | Oct 2002 - Jul 2025 |
| Coterra Energy Operating E LLC | New Mexico | 356,025 BBLs | 516,400 MCF | Jan 2023 - Aug 2025 |
| Coterra Energy Operating F LLC | New Mexico | 1,121,053 BBLs | 3,381,588 MCF | Apr 2019 - Aug 2025 |
| Crawford Production Company | Kansas | 1,336 BBLs | 721 MCF | Jan 1980 - Jun 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 | 1,615,004 BBLs | 6,978,421 MCF | Aug 2016 - Jul 2025 |
| Crosbys Creek Oil & Gas, LLC | Alabama | 5,408 BBLs | 37,953 MCF | Apr 1982 - Jul 2025 |
| Cross Bar Energy, LLC | Kansas | 2,273 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Cross Timbers Energy, LLC | New Mexico | 28,131 BBLs | 400,723 MCF | Jul 2013 - Jul 2025 |
| Crowheart Energy LLC | Wyoming | 215,483 BBLs | 7,576,446 MCF | Feb 2018 - Jul 2025 |
| Crown Energy Company | Kansas | 2,315 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Curt'S Oil Operation, LLC | Kansas | 4,627 BBLs | 2,475 MCF | Jan 2010 - Jun 2025 |
| Dakota Crude, Inc. | North Dakota | 1,242 BBLs | 0 MCF | May 2003 - Aug 2025 |
| Dale E. Jackson Production Co. | Kansas | 1,960 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Darrah Oil Company, LLC | Kansas | 16,783 BBLs | 7,084 MCF | Jan 2010 - Jun 2025 |
| Daube Company The | Wyoming | 7,929 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 | 11,240 BBLs | 14,356 MCF | Jan 1980 - Jun 2025 |
| De Soto Oil Properties, LLC | Alabama | 1,467 BBLs | 828 MCF | May 1988 - Jul 2025 |
| Delta Royalties LLC | Louisiana | 2,739 BBLs | 7,275 MCF | Nov 2019 - Dec 2024 |
| Denbury Onshore LLC | Wyoming | 173,028 BBLs | 126,714 MCF | Jan 2011 - Jul 2025 |
| Denbury Onshore, LLC | Alabama | 20,188 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 | 101,219 BBLs | 20,565 MCF | Oct 2007 - Aug 2025 |
| Desert Eagle Operating LLC | Colorado | 0 BBLs | 63,058 MCF | Jun 2022 - Aug 2025 |
| Deutsch Oil Company | Kansas | 3,496 BBLs | 988 MCF | Jan 1980 - Jun 2025 |
| Devon Energy Production Company LP | Wyoming | 713,234 BBLs | 1,211,575 MCF | Jan 1978 - Aug 2025 |
| Devon Energy Production Company, LP | New Mexico | 6,624,507 BBLs | 33,479,869 MCF | Jan 1993 - Aug 2025 |
| Devon Energy Williston, L.L.C. | Montana | 107,902 BBLs | 99,619 MCF | Apr 2021 - Jul 2025 |
| DGH Oil, LLC | Kansas | 4,658 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| DHP Investments, LTD. | Kansas | 1,316 BBLs | 0 MCF | Mar 2008 - Jun 2025 |
| Diamond Oil & Gas LLC | Wyoming | 818 BBLs | 13,288 MCF | Oct 2011 - Aug 2025 |
| Diehl Oil Inc | Kansas | 2,094 BBLs | 0 MCF | Jan 1980 - Jun 2025 |