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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Nortex Gas & Oil Co | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Feb 1984 |
| North American Energy | Wyoming | 0 BBLs | 0 MCF | Nov 1985 - Feb 1986 |
| North Central Oil Corp | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1996 |
| North Finn LLC | Wyoming | 96 BBLs | 763 MCF | Jan 1980 - Oct 2024 |
| North Shore Exploration & Prod LLC | Wyoming | 16,486 BBLs | 804,344 MCF | May 2015 - Oct 2024 |
| North Silo Resources LLC | Wyoming | 218,562 BBLs | 253,070 MCF | Sep 2019 - Oct 2024 |
| North Star Operating Company | Wyoming | 0 BBLs | 0 MCF | Mar 1993 - Jun 2024 |
| Northern Gas Company | Wyoming | 0 BBLs | 0 MCF | Oct 1991 - Oct 1991 |
| Northern Michigan Expl Co | Wyoming | 0 BBLs | 0 MCF | Feb 1986 - Apr 1987 |
| Northern Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 2013 |
| Northern Pump Company | Wyoming | 0 BBLs | 0 MCF | Feb 1984 - Dec 1986 |
| Northfirst Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | May 1987 - Aug 1987 |
| Northstar Operating Company Of Texas | Wyoming | 0 BBLs | 0 MCF | Nov 1997 - Feb 2008 |
| Northwest Crude Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Dec 1988 |
| Northwest Energy LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2002 - Jan 2010 |
| Northwest Exploration | Wyoming | 0 BBLs | 0 MCF | Nov 1978 - Dec 1984 |
| Norton Frickey | Wyoming | 0 BBLs | 0 MCF | Sep 1998 - Sep 2002 |
| Nova Energy Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Oct 2020 |
| Nova Petroleum Cororation | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Mar 1987 |
| NRG Associates | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1982 |
| Nucor Oil & Gas Inc | Wyoming | 313 BBLs | 240 MCF | May 2005 - Oct 2024 |
| Nupec Resources Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Dec 1984 |
| Nupetco Associates | Wyoming | 0 BBLs | 0 MCF | Jan 1992 - Dec 2022 |
| O'Brien Energy Resources Corporation | Wyoming | 1,151 BBLs | 0 MCF | Feb 2002 - Oct 2024 |
| Ocean Energy Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 2001 |
| Oci LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2011 - Jan 2024 |
| Odessa Natural Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1981 |
| Oedekoven Amerifields Resources LLC | Wyoming | 0 BBLs | 0 MCF | Jul 2013 - Aug 2024 |
| Oedekoven Fred L | Wyoming | 0 BBLs | 0 MCF | Apr 1981 - Jan 1983 |
| Oedekoven Water & Hot Oil | Wyoming | 43 BBLs | 0 MCF | May 1984 - Nov 2024 |
| Ogle Corporation | Wyoming | 0 BBLs | 0 MCF | Sep 1979 - Dec 1979 |
| Oil & Gas Acquisition Group Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1996 - May 2003 |
| Oil Mountain Energy Inc | Wyoming | 1,106 BBLs | 0 MCF | Oct 2018 - Oct 2024 |
| Oildigger Resources Fund L LLLP | Wyoming | 5,753 BBLs | 3,692 MCF | Sep 2016 - Oct 2024 |
| Oilfield Consultants | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Dec 1987 |
| Oilfield Salvage & Service Company | Wyoming | 2,933 BBLs | 4,365 MCF | Jan 1978 - Oct 2024 |
| Okie Crude Company | Wyoming | 0 BBLs | 0 MCF | Jul 1987 - Nov 1994 |
| Oklahoma Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1983 |
| Oklahoma Pacific LTD | Wyoming | 0 BBLs | 0 MCF | Jan 1995 - Aug 1995 |
| Okmar Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1990 |
| Okt Petroleum Company Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1996 - Sep 1996 |
| Olds Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1988 |
| Olympic Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1980 - Jul 2004 |
| Omimex Petroleum Inc (Co) | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - May 2001 |
| Omimex Petroleum Inc (De) | Wyoming | 0 BBLs | 0 MCF | Dec 2008 - Aug 2020 |
| 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 - Jul 2024 |
| Opes Production Inc | Wyoming | 0 BBLs | 0 MCF | Jan 2005 - Mar 2015 |