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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| McWhinney Holding Company LLLP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2021 |
| MDS Energy Development LLC | Colorado | 25,676 BBLs | 65,251 MCF | Nov 2022 - Sep 2024 |
| Medicine Bow Operating Company | Colorado | 0 BBLs | 0 MCF | Aug 2001 - Aug 2004 |
| Mendell Finisterre II LLC | Colorado | 0 BBLs | 0 MCF | Dec 2014 - Jun 2017 |
| Mendell Niobrara LLC | Colorado | 0 BBLs | 0 MCF | Dec 2012 - Apr 2017 |
| Merit Energy Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2018 |
| Meritage Energy Partners | Colorado | 0 BBLs | 0 MCF | Jun 2004 - Dec 2005 |
| Merrion Oil & Gas Corp | Colorado | 418 BBLs | 26,685 MCF | Jan 1999 - Sep 2024 |
| Mesa Energy Partners LLC | Colorado | 0 BBLs | 0 MCF | Oct 2009 - Sep 2015 |
| Mesa Hydrocarbons LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2003 |
| Mesmer Dba Continental Energy Service* David L | Colorado | 0 BBLs | 0 MCF | Sep 2005 - Jan 2008 |
| Messer LLC | Colorado | 0 BBLs | 0 MCF | Aug 2021 - Jul 2024 |
| MF Energy LLC | Colorado | 0 BBLs | 0 MCF | Jun 2006 - Mar 2009 |
| Mid-Con Energy Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 2006 - Jul 2016 |
| Mineral Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2014 |
| Misty Mountain Operating LLC | Colorado | 0 BBLs | 0 MCF | Mar 2014 - Sep 2015 |
| Mitchell Energy Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 1999 |
| Mobil Oil Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2016 |
| Monago Operating Inc | Colorado | 0 BBLs | 0 MCF | Dec 2004 - Mar 2017 |
| Monahan Gas & Oil Inc | Colorado | 0 BBLs | 0 MCF | Dec 2004 - Mar 2017 |
| Monahan* Rex Family Trust | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2010 |
| Monfort Of Colorado Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2002 |
| Mont Rouge Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2020 |
| Monument Gas Marketing Inc | Colorado | 724 BBLs | 5,670 MCF | Oct 2000 - Aug 2024 |
| Monument Global Resources Inc | Colorado | 0 BBLs | 0 MCF | Jun 2012 - Jul 2014 |
| Morning Gun Exploration LLC | Colorado | 0 BBLs | 0 MCF | Jan 2019 - Oct 2021 |
| Morningstar Operating LLC | Colorado | 0 BBLs | 215,996 MCF | Jun 2020 - Sep 2024 |
| Mountain Petroleum Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2016 |
| MRD Operating LLC | Colorado | 0 BBLs | 0 MCF | Jul 2014 - Apr 2015 |
| Mull Drilling Company Inc | Colorado | 23,608 BBLs | 316,345 MCF | Jan 1999 - Aug 2024 |
| Murchison Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2024 |
| Murchison Trusts | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2003 |
| Murfin Drilling Company Inc | Colorado | 836 BBLs | 702 MCF | Jan 1999 - Sep 2024 |
| Mustang Creek Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 2014 - Mar 2020 |
| Mustang Resources LLC | Colorado | 0 BBLs | 17,847 MCF | Jan 2015 - Aug 2024 |
| Mystique Resources Company | Colorado | 0 BBLs | 0 MCF | Aug 2010 - Nov 2022 |
| Nance Petroleum Corporation | Colorado | 0 BBLs | 0 MCF | Feb 2003 - Nov 2007 |
| Nanke Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 2017 - Jun 2022 |
| National Fuel Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2015 |
| Natural Resource Group Inc | Colorado | 0 BBLs | 0 MCF | Jan 2011 - Jan 2024 |
| Navex Resources LLC | Colorado | 0 BBLs | 0 MCF | May 2023 - Oct 2024 |
| New Frontier Energy Inc | Colorado | 0 BBLs | 0 MCF | Nov 2006 - Mar 2010 |
| New Horizon Exploration Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 1999 |
| Newell Energy LTD | Colorado | 0 BBLs | 0 MCF | Jan 2010 - Oct 2021 |
| Newfield Production Company | Colorado | 0 BBLs | 0 MCF | Dec 2007 - Feb 2012 |
| Nichols * Orville B | Colorado | 0 BBLs | 0 MCF | Dec 2009 - Mar 2015 |
| Nickel Road Operating LLC | Colorado | 51,081 BBLs | 168,709 MCF | Jul 2018 - Aug 2024 |
| Nielson & Associates, Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2006 |
| Nighthawk Production LLC | Colorado | 0 BBLs | 0 MCF | Feb 2012 - Jun 2018 |
| Niobrara Illuminating Gas Associates LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2009 |