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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| M G Oil Inc | Kansas | 8,154 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Mack Energy Corp | New Mexico | 185,952 BBLs | 383,969 MCF | Jan 1993 - Sep 2024 |
| Magna Operating, LLC | Louisiana | 4,185 BBLs | 3,731 MCF | Sep 2010 - Jun 2024 |
| Magnum Producing, L.P. | Louisiana | 3,615 BBLs | 0 MCF | Feb 2004 - Jul 2024 |
| Magpie Operating, Inc | Colorado | 33,668 BBLs | 103,755 MCF | Jan 1999 - Aug 2024 |
| Mai Oil Operations, Inc. | Kansas | 52,199 BBLs | 356 MCF | Jan 1980 - Jul 2024 |
| Mantle Oil & Gas, LLC | Louisiana | 3,306 BBLs | 15,160 MCF | Jan 2009 - Jun 2024 |
| Mar-Lou Oil Co., LLC | Kansas | 2,395 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Maralex Resources, Inc | Colorado | 0 BBLs | 220,806 MCF | Jan 1999 - Sep 2024 |
| Marathon Oil Company | North Dakota | 3,182,165 BBLs | 6,598,945 MCF | Jul 1979 - Sep 2024 |
| Marathon Oil Permian LLC | New Mexico | 1,287,634 BBLs | 4,189,823 MCF | Jul 2017 - Sep 2024 |
| Marlin Exploration, LLC | Louisiana | 2,900 BBLs | 992 MCF | Mar 2015 - Jul 2024 |
| Marlin Exploration, LLC | Mississippi | 1,249 BBLs | 0 MCF | Dec 1976 - Aug 2024 |
| Marlin Operating, LLC | New Mexico | 9,697 BBLs | 33,233 MCF | Jan 2022 - Sep 2024 |
| Marlin Resources, L.L.C. | Louisiana | 2,514 BBLs | 0 MCF | Apr 2008 - Jul 2024 |
| Marquee Corporation | Louisiana | 1,546 BBLs | 328 MCF | Jun 1990 - Jun 2024 |
| Marshall & Winston Inc | New Mexico | 46,782 BBLs | 105,039 MCF | Jan 1993 - Sep 2024 |
| Martin Production Company | Louisiana | 1,828 BBLs | 2,782 MCF | Jun 1996 - Jun 2024 |
| Matador Production Company | New Mexico | 3,736,379 BBLs | 14,252,012 MCF | Mar 2006 - Sep 2024 |
| Maverick Permian LLC | New Mexico | 116,524 BBLs | 1,136,877 MCF | Jul 2022 - Sep 2024 |
| Maxim Drilling & Expl Inc | Wyoming | 1,054 BBLs | 12,921 MCF | Jun 1982 - Sep 2024 |
| Maximus Operating LTD | Wyoming | 10,739 BBLs | 2,362 MCF | Jul 2014 - Sep 2024 |
| Maximus Operating, LTD. | Louisiana | 221 BBLs | 45,751 MCF | Jan 2006 - Jul 2024 |
| McCormick Production Company, Inc. | Louisiana | 4,100 BBLs | 0 MCF | Jan 2009 - Jun 2024 |
| McCoy Petroleum Corporation | Kansas | 14,786 BBLs | 20,162 MCF | Jan 1980 - Jul 2024 |
| McFadden Oil Co. | Kansas | 3,506 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| McGinness Energy Company, Inc. | Kansas | 3,143 BBLs | 46,478 MCF | Jan 2020 - Jul 2024 |
| McGowan Working Partners Inc. | Mississippi | 2,048 BBLs | 3,193 MCF | Dec 1976 - Aug 2024 |
| McGowan Working Partners, Inc. | Arkansas | 6,241 BBLs | 2,916 MCF | Jan 2001 - Jul 2024 |
| McGowan Working Partners, Inc. | Louisiana | 21,147 BBLs | 40,812 MCF | Jan 2001 - Jul 2024 |
| MDS Energy Development LLC | Colorado | 25,676 BBLs | 65,251 MCF | Nov 2022 - Sep 2024 |
| Me-Tex Oil & Gas Inc | New Mexico | 3,677 BBLs | 24,453 MCF | Jan 1993 - Sep 2024 |
| Medora Minerals, LLC | North Dakota | 5,875 BBLs | 84 MCF | Nov 2018 - Sep 2024 |
| Mercury Resources LLC | North Dakota | 5,618 BBLs | 9,930 MCF | Dec 2018 - Sep 2024 |
| Meridian Energy Inc. | Kansas | 4,462 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Merit Energy Company | Wyoming | 416,383 BBLs | 226,302 MCF | Jan 1981 - Sep 2024 |
| Merit Energy Company, LLC | Arkansas | 0 BBLs | 5,627,615 MCF | Aug 2003 - Jun 2024 |
| Merit Energy Company, LLC | Kansas | 171,234 BBLs | 1,806,918 MCF | Jan 1980 - Jul 2024 |
| Merrion Oil & Gas Corp | Colorado | 418 BBLs | 26,685 MCF | Jan 1999 - Sep 2024 |
| Merrion Oil & Gas Corp | New Mexico | 1,098 BBLs | 109,592 MCF | Jan 1993 - Sep 2024 |
| Merrion Oil & Gas Corporation | Wyoming | 1,434 BBLs | 56,328 MCF | Jan 1978 - Sep 2024 |
| Messenger Petroleum, Inc. | Kansas | 2,456 BBLs | 27,748 MCF | Jan 1980 - Jul 2024 |
| Mewbourne Oil Co | New Mexico | 6,875,416 BBLs | 25,539,252 MCF | Jan 1993 - Sep 2024 |
| Michael D. Weilert Oil Company | Kansas | 1,139 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Mid-Con Energy Operating LLC | Wyoming | 7,462 BBLs | 2,945 MCF | Feb 2017 - Sep 2024 |
| Mid-Continent Resources, Inc. | Kansas | 1,623 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Mid-South Trading, Inc. | Louisiana | 2,328 BBLs | 0 MCF | Dec 1995 - Jul 2024 |
| Mike Kelso Oil, Inc. | Kansas | 12,366 BBLs | 106,567 MCF | Jan 1980 - Jul 2024 |
| Mikol Oil LLC | Kansas | 1,306 BBLs | 0 MCF | Feb 2009 - Jul 2024 |
| Mineral Ventures, Inc. | Louisiana | 340 BBLs | 31,457 MCF | Mar 1998 - Jun 2024 |