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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Gulfport Energy Corporation | Colorado | 0 BBLs | 0 MCF | Oct 2003 - Nov 2017 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2025 |
| H & M Petroleum Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| H & R Well Services, Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2008 |
| Halde Oil Inc | Colorado | 61 BBLs | 238 MCF | Jan 1999 - Dec 2025 |
| Harburg* Rudolph W | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2022 |
| Harsh International Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2013 |
| Hayes Oil & Gas Company | Colorado | 0 BBLs | 0 MCF | Apr 2001 - Apr 2001 |
| Helena Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| High Plains Energy LLC | Colorado | 0 BBLs | 0 MCF | Mar 2012 - May 2017 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 79,124 MCF | Jan 1999 - Nov 2025 |
| Highpoint Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2022 |
| Hilcorp Energy Company | Colorado | 322 BBLs | 1,995,598 MCF | Jan 1999 - Dec 2025 |
| Holcomb Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| Homestead Oil Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2014 |
| Horseshoe Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2001 |
| HRC Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2003 |
| HRM Resources III LLC | Colorado | 0 BBLs | 0 MCF | May 2000 - Oct 2016 |
| HRM Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2013 |
| HS Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2002 |
| Hubbard Creek Coal Gas LLC | Colorado | 0 BBLs | 0 MCF | Aug 2019 - Dec 2025 |
| Hubbs III, LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2024 |
| Huntington Energy LLC | Colorado | 0 BBLs | 0 MCF | Jul 2002 - Dec 2024 |
| Hyndrex Resources | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2016 |
| Impetro Resources LLC | Colorado | 16,981 BBLs | 468 MCF | Jan 1999 - Nov 2025 |
| Incline Operating LLC | Colorado | 0 BBLs | 0 MCF | Dec 2025 - Dec 2025 |
| Incremental Oil & Gas (Florence) LLC | Colorado | 0 BBLs | 0 MCF | Apr 2008 - Dec 2025 |
| Industrial Gas Services Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2023 |
| Intermountain Oil Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2001 |
| Investment Equipment LLC | Colorado | 1,474 BBLs | 295 MCF | Jan 1999 - Nov 2025 |
| J-W Operating Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2015 |
| Javernick Oil | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2025 |
| Jenex Petroleum Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2005 |
| Jetta Operating Company Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2018 |
| JFH Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2022 |
| Joemar Wyoming Operating LLC | Colorado | 0 BBLs | 4,043 MCF | Sep 2012 - Nov 2025 |
| JWC Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 2010 - Nov 2025 |
| K P Kauffman Company Inc | Colorado | 7,993 BBLs | 68,493 MCF | Jan 1999 - Nov 2025 |
| Kaiser-Francis Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| KC Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2014 |
| Kennec Trustee* Frank | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2006 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,603,763 BBLs | 24,917,235 MCF | Jan 1999 - Dec 2025 |
| KGH Operating Company | Colorado | 1,083 BBLs | 34,500 MCF | Jan 1999 - Nov 2025 |
| Kidron Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2002 |
| Kinder Morgan Co2 Co LP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2025 |
| Klabzuba Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2011 |
| Kodiak Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2013 |
| KT Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2025 |
| KTM Operating LLC | Colorado | 50 BBLs | 0 MCF | Jan 1999 - Nov 2025 |
| Kuenzler & Flora Reserve Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |