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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Misahar Investments | Wyoming | 0 BBLs | 0 MCF | Oct 1989 - Dec 1992 |
| Mitchell Energy Corp | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1993 |
| Mitchell Enterprises | Wyoming | 0 BBLs | 0 MCF | Jul 1994 - Dec 1997 |
| Mitchell John F | Wyoming | 0 BBLs | 0 MCF | Feb 2000 - Mar 2006 |
| Mitchell M J | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 1983 |
| MJC Oil And Gas LLC | Wyoming | 47 BBLs | 11 MCF | Feb 2022 - Mar 2024 |
| Mobil Expl & Producing North America Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Nov 1986 |
| Moco Oil Inc | Wyoming | 0 BBLs | 0 MCF | Dec 1981 - May 1984 |
| Mole Operating | Wyoming | 0 BBLs | 0 MCF | Sep 1981 - Aug 1983 |
| Mon-Oil Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1982 - Apr 1996 |
| Monahan Rex | Wyoming | 0 BBLs | 0 MCF | Nov 1978 - May 1999 |
| Moncrief W A Jr | Wyoming | 1,429 BBLs | 58,697 MCF | Jan 1978 - Mar 2024 |
| Monsanto Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1986 |
| Montana Power Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 2000 |
| Montex Exploration | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Apr 2003 |
| Monument Global Resources Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2015 - Apr 2024 |
| Moose Oil And Gas LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2008 - Feb 2011 |
| More Production Company | Wyoming | 0 BBLs | 0 MCF | Jan 1993 - Dec 1999 |
| Morgan Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Nov 1994 - Mar 2006 |
| Morgan Well Service Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Dec 1996 |
| Morning Star Oil Company | Wyoming | 0 BBLs | 0 MCF | Mar 1996 - Mar 2024 |
| Morningstar Energy Inc | Wyoming | 0 BBLs | 0 MCF | Oct 2007 - Mar 2013 |
| Morsey Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1994 |
| Morton Holdings LLC | Wyoming | 0 BBLs | 0 MCF | May 2012 - Dec 2013 |
| Mosbacher Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Aug 1984 |
| Moss Properties Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1979 - Mar 1986 |
| Mountain Hawk Energy LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2010 - Jan 2015 |
| Mountain Petroleum Corp | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 2008 |
| Mountain Petroleum LTD | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Aug 1987 |
| Mountain Resource Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Dec 1988 |
| Moxa Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Apr 1981 |
| MRD Operating LLC (Delaware) | Wyoming | 0 BBLs | 0 MCF | Feb 2008 - Jul 2015 |
| Mtarri Inc | Wyoming | 0 BBLs | 0 MCF | Feb 2001 - Nov 2004 |
| MTG Operating Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1997 - Apr 2011 |
| Muddy Mineral Exploration LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2009 - Jun 2017 |
| Mueller Fred W | Wyoming | 0 BBLs | 0 MCF | Jun 1979 - Dec 1995 |
| Mule West Oil LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2010 - Feb 2014 |
| Mull Drilling Company | Wyoming | 0 BBLs | 0 MCF | Dec 1994 - Nov 2008 |
| Mundell F E | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1994 |
| Murex Petroleum Corporation | Wyoming | 0 BBLs | 0 MCF | Dec 2003 - Nov 2017 |
| Murphy D V | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1989 |
| Murphy Oil USA Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1992 |
| Murphy Sheldon L & Loretta | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Mar 2024 |
| Mustang Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Mar 1982 - Mar 1996 |
| Mustang Resources LLC | Wyoming | 627 BBLs | 183,387 MCF | Nov 2014 - Mar 2024 |
| MWJ Producing Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1998 |
| Mystique Developments | Wyoming | 0 BBLs | 0 MCF | May 1983 - Dec 1997 |
| Nadel & Gussman Rockies LLC | Wyoming | 0 BBLs | 0 MCF | Jul 2005 - Jun 2012 |
| Nance Petroleum Corporation | Wyoming | 0 BBLs | 0 MCF | Jul 1999 - Nov 2007 |
| Nanke Energy LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2017 - Jan 2024 |