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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Luff Exploration Company | North Dakota | 9,752 BBLs | 8,309 MCF | Dec 1996 - Feb 2024 |
| Lynx Operating Co., Inc. | New Mexico | 2,739 BBLs | 2,769 MCF | Jan 1999 - Feb 2024 |
| M & D Oil And Gas, LLC | Kansas | 1,273 BBLs | 0 MCF | Jan 2020 - Dec 2023 |
| M & G DRLG Co Inc | New Mexico | 0 BBLs | 64,987 MCF | May 1995 - Feb 2024 |
| M & K Oil Company LLC | Wyoming | 20,622 BBLs | 88,138 MCF | Jan 1978 - Feb 2024 |
| M & M Exploration, Inc. | Kansas | 1,422 BBLs | 19,384 MCF | Mar 2002 - Dec 2023 |
| M & M Oil Company, L.L.C. | Louisiana | 3,176 BBLs | 0 MCF | Aug 1994 - Dec 2023 |
| M E Klein & Associates, Inc | Kansas | 1,267 BBLs | 826 MCF | Jan 1980 - Dec 2023 |
| M G Oil Inc | Kansas | 7,471 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Mack Energy Corp | New Mexico | 144,725 BBLs | 293,851 MCF | Jan 1993 - Feb 2024 |
| Magna Operating, LLC | Louisiana | 6,084 BBLs | 3,930 MCF | Sep 2010 - Jan 2024 |
| Magnolia Production Company LLC | Louisiana | 859 BBLs | 33,054 MCF | Mar 2015 - Dec 2023 |
| Magnum Producing, L.P. | Louisiana | 2,430 BBLs | 0 MCF | Jan 2004 - Dec 2023 |
| Magpie Operating, Inc | Colorado | 17,361 BBLs | 102,006 MCF | Jan 1999 - Feb 2024 |
| Mai Oil Operations, Inc. | Kansas | 42,828 BBLs | 386 MCF | Jan 1980 - Dec 2023 |
| Manzano LLC | New Mexico | 2,559 BBLs | 4,535 MCF | Mar 2005 - Jan 2024 |
| Mar-Lou Oil Co., LLC | Kansas | 2,438 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Marathon Oil Company | North Dakota | 2,724,963 BBLs | 5,484,419 MCF | Jul 1979 - Feb 2024 |
| Marathon Oil Permian LLC | New Mexico | 949,904 BBLs | 3,001,780 MCF | Jul 2017 - Feb 2024 |
| Marlin Exploration, LLC | Louisiana | 2,866 BBLs | 2,043 MCF | Mar 2015 - Jan 2024 |
| Marlin Operating, LLC | New Mexico | 13,034 BBLs | 23,428 MCF | Jan 2022 - Jan 2024 |
| Marlin Resources, L.L.C. | Louisiana | 2,996 BBLs | 0 MCF | Apr 2008 - Jan 2024 |
| Marquee Corporation | Louisiana | 2,148 BBLs | 381 MCF | Jun 1990 - Jan 2024 |
| Marshall & Winston Inc | New Mexico | 77,431 BBLs | 129,076 MCF | Jan 1993 - Feb 2024 |
| Matador Production Company | New Mexico | 2,827,094 BBLs | 12,069,807 MCF | Mar 2006 - Jan 2024 |
| Matrix Production Company | Wyoming | 19,652 BBLs | 20,718 MCF | Jan 1994 - Jan 2024 |
| Maverick Permian LLC | New Mexico | 132,742 BBLs | 874,932 MCF | Jul 2022 - Jan 2024 |
| Maxim Drilling & Expl Inc | Wyoming | 1,112 BBLs | 8,622 MCF | Jun 1982 - Feb 2024 |
| Maximus Operating LTD | Wyoming | 9,244 BBLs | 1,726 MCF | Jul 2014 - Feb 2024 |
| Maximus Operating, LTD. | Louisiana | 289 BBLs | 61,261 MCF | Jan 2006 - Jan 2024 |
| McCormick Production Company, Inc. | Louisiana | 4,544 BBLs | 0 MCF | Jan 2009 - Dec 2023 |
| McCoy Petroleum Corporation | Kansas | 14,241 BBLs | 21,540 MCF | Jan 1980 - Dec 2023 |
| McFadden Oil Co. | Kansas | 2,262 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| McGinness Energy Company, Inc. | Kansas | 978 BBLs | 21,996 MCF | Jan 2020 - Dec 2023 |
| McGowan Working Partners Inc. | Mississippi | 1,842 BBLs | 3,074 MCF | Dec 1976 - Jan 2024 |
| McGowan Working Partners, Inc. | Arkansas | 6,037 BBLs | 2,799 MCF | Jan 2001 - Feb 2024 |
| McGowan Working Partners, Inc. | Louisiana | 23,429 BBLs | 40,045 MCF | Jan 2001 - Dec 2023 |
| MDS Energy Development LLC | Colorado | 31,776 BBLs | 32,520 MCF | Nov 2022 - Feb 2024 |
| Me-Tex Oil & Gas Inc | New Mexico | 3,666 BBLs | 22,528 MCF | Jan 1993 - Feb 2024 |
| Medora Minerals, LLC | North Dakota | 6,006 BBLs | 69 MCF | Nov 2018 - Feb 2024 |
| Mercury Resources LLC | North Dakota | 5,060 BBLs | 8,867 MCF | Dec 2018 - Feb 2024 |
| Meridian Energy Inc. | Kansas | 3,906 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Merit Energy Company | Wyoming | 433,652 BBLs | 216,755 MCF | Jan 1981 - Feb 2024 |
| Merit Energy Company, LLC | Arkansas | 0 BBLs | 5,747,512 MCF | Aug 2003 - Jan 2024 |
| Merit Energy Company, LLC | Kansas | 153,171 BBLs | 1,898,176 MCF | Jan 1980 - Dec 2023 |
| Merrion Oil & Gas Corp | New Mexico | 1,299 BBLs | 102,133 MCF | Jan 1993 - Feb 2024 |
| Merrion Oil & Gas Corporation | Wyoming | 1,262 BBLs | 49,393 MCF | Jan 1978 - Feb 2024 |
| Messenger Petroleum, Inc. | Kansas | 2,477 BBLs | 37,518 MCF | Jan 1980 - Dec 2023 |
| Mewbourne Oil Co | New Mexico | 6,430,822 BBLs | 24,390,075 MCF | Jan 1993 - Jan 2024 |
| Mid-Con Energy Operating LLC | Wyoming | 7,380 BBLs | 2,417 MCF | Feb 2017 - Feb 2024 |