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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Mid-Continent Resources, Inc. | Kansas | 1,714 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| Mid-South Trading, Inc. | Louisiana | 2,454 BBLs | 0 MCF | Dec 1995 - Jan 2025 |
| Mike Kelso Oil, Inc. | Kansas | 8,173 BBLs | 72,014 MCF | Jan 1980 - Sep 2025 |
| Mineral Ventures, Inc. | Louisiana | 687 BBLs | 39,684 MCF | Mar 1998 - Dec 2024 |
| Missaukee Oil And Gas Company LLC | Michigan | 7,067 BBLs | 21,485 MCF | Sep 2019 - Nov 2025 |
| Missouri River Resources ND, LLC | North Dakota | 6,710 BBLs | 36,497 MCF | Nov 2014 - Nov 2025 |
| Mobil Oil Exploration & Producing Southeast, Inc. | Alabama | 69 BBLs | 526,250 MCF | Aug 1976 - Oct 2025 |
| Mogo Reagan, LLC | Montana | 3,072 BBLs | 10,524 MCF | Nov 2019 - Nov 2025 |
| Momentum Operating Co Inc | New Mexico | 518 BBLs | 10,071 MCF | Dec 2000 - Nov 2025 |
| Moncrief W A Jr | Wyoming | 911 BBLs | 22,610 MCF | Jan 1978 - Oct 2025 |
| Montalban Oil & Gas Operations, Inc. | Montana | 2,668 BBLs | 66,857 MCF | Jan 1991 - Nov 2025 |
| Morgan E&P, LLC | North Dakota | 2,401 BBLs | 1,260 MCF | Dec 2023 - Nov 2025 |
| Morgenstern Oil Operations LLC | Kansas | 1,624 BBLs | 0 MCF | Jan 2020 - Sep 2025 |
| Morningstar Operating LLC | Colorado | 0 BBLs | 183,549 MCF | Jun 2001 - Oct 2025 |
| Morningstar Operating LLC | Montana | 324,358 BBLs | 497,648 MCF | Jan 2024 - Nov 2025 |
| Morningstar Operating LLC | New Mexico | 111,089 BBLs | 3,210,691 MCF | Sep 2020 - Nov 2025 |
| Morningstar Operating LLC | North Dakota | 30,266 BBLs | 38,078 MCF | Oct 2024 - Nov 2025 |
| Mosbacher Energy Company | Mississippi | 16,914 BBLs | 6,895 MCF | Dec 1976 - Nov 2025 |
| Mr NM Operating LLC | New Mexico | 7,605 BBLs | 47,788 MCF | Mar 2021 - Nov 2025 |
| MTM Petroleum, Inc. | Kansas | 328 BBLs | 22,012 MCF | Jan 1980 - Sep 2025 |
| Mull Drilling Company, Inc. | Kansas | 19,414 BBLs | 21,345 MCF | Jan 1980 - Sep 2025 |
| Murex Petroleum Corporation | North Dakota | 177,428 BBLs | 512,059 MCF | Apr 2001 - Nov 2025 |
| Murfin Drilling Co., Inc. | Kansas | 77,721 BBLs | 1,173 MCF | Jan 1980 - Sep 2025 |
| Murfin Drilling Company, Inc. | North Dakota | 13,173 BBLs | 9,551 MCF | Mar 2025 - Nov 2025 |
| Murphrey Oil Company, Inc. | Louisiana | 3,563 BBLs | 0 MCF | Feb 2020 - Jan 2025 |
| Muskegon Operating Company LLC | Michigan | 25,747 BBLs | 352,414 MCF | Jan 2021 - Nov 2025 |
| Mustang Energy Corporation | Kansas | 2,898 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| Mustang Holding, LLC (Finnex) | Alaska | 24,854 BBLs | 37,769 MCF | Dec 2024 - Nov 2025 |
| Mustang Resources LLC | Colorado | 0 BBLs | 17,162 MCF | Jan 1999 - Oct 2025 |
| Mustang Resources LLC | New Mexico | 2 BBLs | 105,629 MCF | Sep 2018 - Nov 2025 |
| Mustang Resources LLC | Wyoming | 1,635 BBLs | 272,048 MCF | Nov 2014 - Oct 2025 |
| Muzyl Oil Corp | Michigan | 50 BBLs | 172,038 MCF | Nov 2016 - Dec 2025 |
| MWK Petroleum, LLC | Kansas | 1,400 BBLs | 0 MCF | Jan 2020 - Sep 2025 |
| N-10 Exploration, LLC | Kansas | 1,235 BBLs | 35,191 MCF | Jan 2010 - Sep 2025 |
| Nadel And Gussman LLC | Kansas | 1,779 BBLs | 3,024 MCF | Jan 1980 - Sep 2025 |
| Nadel And Gussman Ruston, LLC | Louisiana | 7,961 BBLs | 1,173,013 MCF | Mar 2012 - Dec 2024 |
| Natural Gas Processing Company | Wyoming | 1,402 BBLs | 10,150 MCF | Feb 1978 - Nov 2025 |
| Navigation Powder River LLC | Wyoming | 16,125 BBLs | 72,097 MCF | Dec 2016 - Oct 2025 |
| Nec Operating - Kansas, LLC | Kansas | 1,118 BBLs | 3,007 MCF | Jan 2020 - Sep 2025 |
| Neptune Operating LLC | North Dakota | 693,944 BBLs | 1,716,318 MCF | Jan 2023 - Nov 2025 |
| New Age Oil LLC | Kansas | 2,714 BBLs | 83 MCF | Feb 1982 - Sep 2025 |
| New Era Petroleum Inc | Wyoming | 2,139 BBLs | 0 MCF | Feb 2010 - Oct 2025 |
| New Horizon Resources LLC | Montana | 7,979 BBLs | 412 MCF | Feb 2022 - Dec 2025 |
| Nnogc Exploration & Production, LLC | Utah | 12,076 BBLs | 28,189 MCF | Nov 2012 - Nov 2025 |
| Noble Energy Inc | Colorado | 2,671,021 BBLs | 19,943,471 MCF | Jan 1999 - Oct 2025 |
| Norstar Petroleum, Inc. | Kansas | 1,429 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| North Fork Operating, LP | New Mexico | 3,192 BBLs | 40,293 MCF | Jan 2020 - Nov 2025 |
| North Shore Exploration & Prod LLC | Wyoming | 5,969 BBLs | 208,532 MCF | May 2015 - Oct 2025 |
| North Silo Resources LLC | Wyoming | 121,215 BBLs | 199,930 MCF | Sep 2019 - Oct 2025 |
| North Slope Borough | Alaska | 0 BBLs | 131,067 MCF | Sep 1950 - Nov 2025 |