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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Civitas North LLC | Colorado | 148,954 BBLs | 671,166 MCF | Oct 2010 - Sep 2025 |
| CM Production LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2020 |
| Colorado Interstate Gas Company LLC | Colorado | 328 BBLs | 0 MCF | Jan 1999 - Sep 2025 |
| Colton Limited Liability Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2023 |
| Conoco Phillips Company | Colorado | 0 BBLs | 0 MCF | Jan 2012 - Feb 2020 |
| Consolidated Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2004 |
| Copper Land Resources LLC | Colorado | 598 BBLs | 0 MCF | Jan 1999 - Sep 2025 |
| Coral Production Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2022 |
| Crestone Peak Resources Operating LLC | Colorado | 1,248,999 BBLs | 6,424,049 MCF | Jan 1999 - Sep 2025 |
| Crowheart Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2025 |
| Crumley* Jack | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2013 |
| Cub Creek Energy LLC | Colorado | 0 BBLs | 0 MCF | Jul 2008 - Mar 2019 |
| Curton Capital Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2015 |
| Cutler Brothers | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2011 |
| CWC Petro LLC | Colorado | 0 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| D & G Roustabout Service | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| Dakota Exploration LLC | Colorado | 0 BBLs | 0 MCF | Jul 2011 - Dec 2018 |
| Danmar Production Company LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2022 |
| Declar Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2012 |
| Desert Eagle Operating LLC | Colorado | 0 BBLs | 43,787 MCF | Apr 2022 - Oct 2025 |
| Developing Equities Group LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2008 |
| Diamond Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2006 |
| Diamond Operating, Inc. | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2021 |
| Diamondback Oil Partners LLP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2005 |
| Diversified Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2025 |
| Diversified Operating Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2012 |
| Donnelly Casing Pulling Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2020 |
| Dover Atwood Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2023 |
| Drindak* Jon | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2010 |
| Dugan Production Corp | Colorado | 0 BBLs | 7,893 MCF | Jan 1999 - Sep 2025 |
| Duke Gas Company LLC | Colorado | 0 BBLs | 10,808 MCF | Jan 1999 - Sep 2025 |
| Dunamis Energy Operating LLC | Colorado | 45,868 BBLs | 51,530 MCF | Sep 2011 - Sep 2025 |
| Dunne Equities Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2010 |
| Eagle Operating Inc | Colorado | 97 BBLs | 0 MCF | Jan 1999 - Sep 2025 |
| East Cheyenne Gas Storage LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2025 |
| Eastco Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 2014 - Sep 2025 |
| Eddy Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2011 |
| Edge Energy II LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| Edge Energy LLC | Colorado | 28,039 BBLs | 281,769 MCF | Aug 2018 - Sep 2025 |
| Edwards Energy Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2011 |
| El Paso E & P Company LP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2009 |
| Ellora LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2009 |
| Elm Ridge Exploration Company LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2017 |
| Encana Energy Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2004 |
| Encana Oil & Gas (USA) Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2017 |
| Enduring Resources LLC | Colorado | 0 BBLs | 1,539,366 MCF | Jan 1999 - Sep 2025 |
| Energen Resources Corporation | Colorado | 0 BBLs | 0 MCF | Jan 2008 - Jul 2011 |
| Energy Alliance Company Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2018 |
| Energy Investment Partners LLC | Colorado | 0 BBLs | 0 MCF | Aug 2005 - Jan 2019 |
| Energy Investments Inc | Colorado | 497 BBLs | 855 MCF | Jan 1999 - Sep 2025 |