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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Monument Global Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2014 |
| Morningstar Operating LLC | Colorado | 0 BBLs | 157,392 MCF | Jun 2001 - Nov 2025 |
| Mountain Petroleum Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2013 |
| Mull Drilling Company Inc | Colorado | 21,941 BBLs | 163,193 MCF | Jan 1999 - Nov 2025 |
| Murchison Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2020 |
| Murfin Drilling Company Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2025 |
| Mustang Resources LLC | Colorado | 0 BBLs | 15,253 MCF | Jan 1999 - Nov 2025 |
| Mystique Resources Company | Colorado | 0 BBLs | 0 MCF | May 2008 - Nov 2022 |
| Nanke Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2024 |
| National Fuel Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2015 |
| Natural Resource Group Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| Navex Resources LLC | Colorado | 0 BBLs | 0 MCF | May 2023 - Jan 2026 |
| Newell Energy LTD | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2021 |
| Nielson & Associates, Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2005 |
| Nighthawk Production LLC | Colorado | 0 BBLs | 0 MCF | Mar 2008 - May 2016 |
| Niobrara Illuminating Gas Associates LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2007 |
| Noble Energy Inc | Colorado | 2,514,925 BBLs | 19,140,351 MCF | Jan 1999 - Dec 2025 |
| Noble Energy Production Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2009 |
| Nonsuch Natural Gas Inc | Colorado | 0 BBLs | 0 MCF | Aug 2001 - Jun 2024 |
| Norstar Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Feb 1999 - Apr 2015 |
| North American Resources Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2002 |
| North Shore Exploration And Production LLC | Colorado | 0 BBLs | 13,773 MCF | Jan 1999 - Dec 2025 |
| Northstar Gas Company Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2016 |
| Nuevida Resources LLC | Colorado | 0 BBLs | 854,471 MCF | Jul 2023 - Nov 2025 |
| O'Brien Energy Resources Corp | Colorado | 7 BBLs | 777 MCF | Jan 1999 - Nov 2025 |
| Ogris Operating LLC | Colorado | 0 BBLs | 609,689 MCF | Jan 1999 - Nov 2025 |
| Okt Resources LLC | Colorado | 0 BBLs | 0 MCF | Sep 2000 - Oct 2006 |
| Omimex Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Aug 2000 - Aug 2022 |
| Organic Energy Company LLC | Colorado | 2,316 BBLs | 2,685 MCF | Jul 2007 - Jan 2026 |
| Orion Energy Partners LP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2010 |
| Overland Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2015 |
| Own Resources Operating LLC | Colorado | 50 BBLs | 824,692 MCF | Jan 1999 - Dec 2025 |
| Oxbow Properties Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2024 |
| Oxy USA Inc | Colorado | 0 BBLs | 146,643 MCF | Jan 1999 - Nov 2025 |
| Oxy USA WTP LP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2015 |
| P & M Petroleum Management LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2021 |
| P O & G Operating LLC | Colorado | 5,789 BBLs | 0 MCF | Jan 1999 - Nov 2025 |
| Padco LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2023 |
| Paine* Joseph J.C. Dba Paine Petroleum Company LLC | Colorado | 0 BBLs | 0 MCF | Dec 2009 - Aug 2020 |
| Painted Pegasus Petroleum LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2024 |
| Pape Oilfield Service Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2012 |
| Par Pacific Holdings Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2010 |
| Park Energy Petroleum LLC | Colorado | 0 BBLs | 0 MCF | Feb 1999 - Mar 2023 |
| Patara Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2013 |
| Patina Oil & Gas Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2006 |
| PCR Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2024 |
| PDC Energy Inc | Colorado | 2,162,975 BBLs | 26,457,729 MCF | Jan 1999 - Nov 2025 |
| Peakview Operating Company, LLC | Colorado | 1,199 BBLs | 500 MCF | Jan 1999 - Dec 2025 |
| Pelican Hill Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | May 2005 - Nov 2005 |
| Peterson Energy Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2025 |