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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Omni Operating Company | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Sep 2001 |
| Oneida Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Sep 1990 - Jul 2003 |
| Onshore Holdings LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2013 - Apr 2016 |
| Open Range Energy LLC | Wyoming | 0 BBLs | 0 MCF | May 2018 - Mar 2025 |
| Opes Production Inc | Wyoming | 0 BBLs | 0 MCF | Jan 2005 - Mar 2015 |
| Orion Energy Partners LP | Wyoming | 0 BBLs | 0 MCF | Nov 2008 - Jul 2010 |
| Oryx Energy Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1995 |
| Osage Hot Oil Service | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 1997 |
| Osage Operating Company LLC | Wyoming | 0 BBLs | 0 MCF | Oct 1996 - May 2006 |
| Osage Partners LLC | Wyoming | 360 BBLs | 0 MCF | Jan 2013 - Sep 2025 |
| Osborn Heirs Company LTD | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 2022 |
| Ott Inc | Wyoming | 0 BBLs | 0 MCF | Mar 2018 - Jul 2025 |
| Outlaw Oil And Gas LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2022 - Nov 2024 |
| Outre' | Wyoming | 0 BBLs | 0 MCF | Aug 1986 - Dec 1986 |
| Overland Resources LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2010 - Feb 2019 |
| Overland Resources LTD | Wyoming | 0 BBLs | 0 MCF | Jan 2003 - Nov 2010 |
| Ovintiv USA Inc | Wyoming | 0 BBLs | 0 MCF | Mar 2001 - Sep 2025 |
| Owl Technical Services Inc | Wyoming | 0 BBLs | 0 MCF | Jul 2005 - May 2006 |
| Oxbow Properties Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2015 - Jan 2025 |
| Oxford Exploration Company | Wyoming | 0 BBLs | 0 MCF | Aug 1988 - Jun 1995 |
| Oxtex Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Oct 1989 |
| Oxy Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1982 - Jan 1986 |
| Oxy USA Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 2024 |
| P & M Petroleum Management LLC | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 2014 |
| P & P Producing Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1991 - May 1995 |
| P B M Oil & Gas Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2000 |
| P O & G Operating LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2017 - Aug 2025 |
| Pacific Enterprises Oil Co USA | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1993 |
| Pacific Transmission Supply | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1987 |
| Pajaro Energy LLC | Wyoming | 0 BBLs | 0 MCF | May 2018 - Dec 2023 |
| Pal LLC | Wyoming | 0 BBLs | 0 MCF | Jul 1989 - Dec 2019 |
| Paladin Energy Partner LLC | Wyoming | 0 BBLs | 0 MCF | Aug 1999 - Aug 2006 |
| Palo Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | May 2000 - Feb 2005 |
| Paluxy Resources Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1988 - Sep 1990 |
| Pancanadian Petroleum Company | Wyoming | 0 BBLs | 0 MCF | Jul 1985 - Oct 1989 |
| Pantera Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Feb 1983 - Oct 1987 |
| Panterra Petroleum | Wyoming | 0 BBLs | 0 MCF | Jan 1997 - Jun 1999 |
| Panther Energy Company III LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2019 - Jul 2020 |
| Paoli Investors LTD | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1985 |
| Par Oil Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Dec 1983 |
| Park Oil Properties LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2014 - Oct 2019 |
| Park Robert E | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1983 |
| Parker & Parsley Producing LP | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1995 |
| Pathfinder Energy Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2000 - May 2024 |
| Patina Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Mar 1991 - Aug 2003 |
| Patrick Petroleum Co | Wyoming | 0 BBLs | 0 MCF | Feb 1982 - Oct 1984 |
| Patriot Energy Resources LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2007 - Aug 2014 |
| Patriot Production LLC | Wyoming | 0 BBLs | 0 MCF | May 2006 - Nov 2007 |
| PDS Resources LLC | Wyoming | 0 BBLs | 0 MCF | Aug 2023 - Aug 2025 |
| Peabody Natural Gas LLC | Wyoming | 117 BBLs | 327 MCF | Jan 2001 - Sep 2025 |