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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Qep Uinta Basin Inc | Colorado | 0 BBLs | 0 MCF | Jan 2000 - Jul 2001 |
| Qualls Operating* R C | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2005 |
| Quantum Resources Management LLC | Colorado | 0 BBLs | 0 MCF | Jul 2006 - Jul 2009 |
| Questar Exploration And Production Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2010 |
| Quicksilver Resources Inc | Colorado | 0 BBLs | 0 MCF | Aug 2008 - Mar 2016 |
| R & G Oil LLC | Colorado | 0 BBLs | 0 MCF | Oct 1999 - Aug 2002 |
| Raisa II Operating LLC | Colorado | 0 BBLs | 0 MCF | Oct 2016 - Mar 2017 |
| Ram Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | May 2012 - Feb 2020 |
| Rampart Energy Company | Colorado | 0 BBLs | 0 MCF | May 2001 - Aug 2011 |
| Rampike Resources LTD | Colorado | 0 BBLs | 0 MCF | Sep 2020 - Oct 2023 |
| Ramsey Property Management LLC | Colorado | 0 BBLs | 0 MCF | Aug 2007 - Sep 2018 |
| Ranchers Exploration Partners LLC | Colorado | 0 BBLs | 0 MCF | Feb 2011 - Jan 2015 |
| Recovery Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 2010 - Jan 2014 |
| Red Hawk Petroleum LLC | Colorado | 0 BBLs | 0 MCF | Mar 2014 - Jan 2024 |
| Red Mesa Holdings/O&G LLC | Colorado | 0 BBLs | 0 MCF | Dec 2007 - Nov 2014 |
| Red Mountain Energy LLC | Colorado | 0 BBLs | 0 MCF | Jun 2005 - Sep 2017 |
| Red Mountain Resources LLC | Colorado | 0 BBLs | 0 MCF | Sep 2011 - Sep 2023 |
| Red Oak Operating LLC | Colorado | 0 BBLs | 0 MCF | Sep 2004 - Nov 2005 |
| Red River Ranch Holdings LLC | Colorado | 0 BBLs | 0 MCF | Oct 2003 - Jan 2015 |
| Red Willow Production Company | Colorado | 0 BBLs | 3,161,863 MCF | Jan 1999 - Feb 2024 |
| Red Willow Production LLC | Colorado | 0 BBLs | 0 MCF | May 2003 - Apr 2009 |
| Renegade Oil & Gas Company LLC | Colorado | 1,951 BBLs | 6,800 MCF | Jan 1999 - Feb 2024 |
| Resource Development Technology LLC | Colorado | 0 BBLs | 0 MCF | Jun 2010 - Sep 2017 |
| Retamco Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| Riata Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2008 |
| Richardson Operating Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2014 |
| Rim Operating, Inc | Colorado | 177 BBLs | 47,576 MCF | Jan 1999 - Feb 2024 |
| Rio Mesa Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2022 |
| Rippy Jr Dba Rippy Sales & Service* William | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2005 |
| Ritchie Exploration Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2015 |
| Riviera Drilling & Exploration Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2013 |
| Rme Petroleum Company | Colorado | 0 BBLs | 0 MCF | Sep 2001 - Sep 2002 |
| Rock Creek Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 2017 - Mar 2019 |
| Rocket Petroleum Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2005 |
| Rockies Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2015 |
| Rocky Mountain Operating Company Inc | Colorado | 0 BBLs | 0 MCF | May 2000 - Dec 2005 |
| Rocky MTN Nat Gas&Electric LLC | Colorado | 0 BBLs | 0 MCF | Jul 2000 - Apr 2001 |
| Rocky MTN Natural Gas LLC Adba Black Hills Energy | Colorado | 0 BBLs | 0 MCF | Nov 2002 - Dec 2003 |
| Rosetta Resources Operating LP | Colorado | 0 BBLs | 0 MCF | Jan 2006 - Sep 2013 |
| Rosewood Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2019 |
| Roughhouse Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Nov 2023 - Jan 2024 |
| Rubicon Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Feb 2010 - Nov 2010 |
| Running Foxes Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Mar 2008 - Jan 2012 |
| Ruth* Ula Pearl | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2019 |
| RWL Enterprises | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2017 |
| S & D LLC | Colorado | 0 BBLs | 0 MCF | Nov 2010 - Aug 2022 |
| S & S Oil & Gas Operating | Colorado | 0 BBLs | 0 MCF | Apr 2005 - Jun 2013 |
| Saga Petroleum Limited Liability Co Of Co | Colorado | 0 BBLs | 0 MCF | Nov 2006 - Jun 2018 |
| Samedan Oil Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2002 |
| Samotlor Petroleum Investments LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2000 |