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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Crown Petroleum Company LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2001 |
| Crumley* Jack | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2018 |
| Cub Creek Energy LLC | Colorado | 0 BBLs | 0 MCF | Jun 2016 - Oct 2023 |
| Curton Capital Corp | Colorado | 0 BBLs | 0 MCF | Sep 2005 - Sep 2015 |
| Cutler Brothers | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2011 |
| CWC Oil And Gas LLC | Colorado | 0 BBLs | 0 MCF | Nov 2011 - Aug 2018 |
| CWC Petro LLC | Colorado | 0 BBLs | 0 MCF | Apr 2019 - Aug 2023 |
| Cyanostar Energy, Inc | Colorado | 0 BBLs | 0 MCF | Mar 1998 - Sep 2001 |
| Cypress Production Inc | Colorado | 0 BBLs | 0 MCF | Sep 2008 - Sep 2011 |
| D & G Roustabout Service | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| D90 Energy LLC | Colorado | 0 BBLs | 0 MCF | Jul 2018 - Oct 2023 |
| Dakota Exploration LLC | Colorado | 0 BBLs | 0 MCF | Jul 2011 - Dec 2018 |
| Dallas United Petroleum Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 1999 |
| Daniels Petroleum Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 1999 |
| Darrah Oil Company LLC | Colorado | 1,427 BBLs | 0 MCF | Oct 2018 - Aug 2024 |
| Dart Oil Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2000 |
| Davis, LLC* Edward Mike | Colorado | 0 BBLs | 0 MCF | Dec 1999 - Sep 2015 |
| Dawson Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2002 |
| Declar Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2012 |
| Dejour Energy (USA) Corporation | Colorado | 0 BBLs | 0 MCF | Dec 2012 - Jun 2014 |
| Delek Energy Systems Us Inc | Colorado | 0 BBLs | 0 MCF | Mar 2010 - Mar 2011 |
| Deluca Holdings LLC | Colorado | 0 BBLs | 0 MCF | Sep 2014 - Aug 2017 |
| Desert Eagle Operating LLC | Colorado | 0 BBLs | 45,682 MCF | Jun 2022 - Aug 2024 |
| Devon Louisiana Corporation | Colorado | 0 BBLs | 0 MCF | Oct 2003 - Dec 2004 |
| Diamond Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Aug 2004 - Jun 2006 |
| Diamond Operating, Inc. | Colorado | 0 BBLs | 0 MCF | Jul 2000 - Feb 2022 |
| Diamondback Oil Partners LLP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2016 |
| Direct Petroleum Exploration Inc | Colorado | 0 BBLs | 0 MCF | Jan 2007 - Aug 2010 |
| Diversified Energy LLC | Colorado | 0 BBLs | 0 MCF | Jun 2012 - Jul 2024 |
| Diversified Operating Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2012 |
| DJ Production Services Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2012 |
| DJ Resources Inc | Colorado | 0 BBLs | 0 MCF | Aug 2007 - Aug 2017 |
| Dominion Oklahoma Texas Exploration & Production | Colorado | 0 BBLs | 0 MCF | Nov 2001 - Nov 2006 |
| Donnelly Casing Pulling Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2020 |
| Doud Oil & Gas Company LLC | Colorado | 0 BBLs | 0 MCF | Jul 2005 - Dec 2007 |
| Dover Atwood Corporation | Colorado | 0 BBLs | 0 MCF | May 2016 - Nov 2023 |
| Drindak* Jon | Colorado | 0 BBLs | 0 MCF | Aug 2000 - Aug 2013 |
| Dry Creek Petroleum LLC | Colorado | 0 BBLs | 0 MCF | Feb 2005 - Aug 2012 |
| Dschaak Consulting LLC | Colorado | 0 BBLs | 0 MCF | Jul 2009 - Nov 2019 |
| Dugan Production Corp | Colorado | 0 BBLs | 9,138 MCF | Jan 1999 - Aug 2024 |
| Duke Gas Company LLC | Colorado | 0 BBLs | 11,673 MCF | Jan 2005 - Sep 2024 |
| Duncan Energy Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2003 |
| Duncan Oil Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2002 |
| Dunne Equities Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2010 |
| E & F Investments | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2006 |
| E M V Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2003 |
| Eagle Operating Inc | Colorado | 105 BBLs | 0 MCF | Jan 1999 - Sep 2024 |
| Earthstone Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2011 |
| East Cheyenne Gas Storage LLC | Colorado | 0 BBLs | 0 MCF | Oct 2009 - Sep 2024 |
| East Resources Management LLC | Colorado | 0 BBLs | 0 MCF | Oct 2004 - Oct 2010 |