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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Miller Energy Company II LLC | Michigan | 15,003 BBLs | 0 MCF | Jan 1982 - Jun 2026 |
| Mineral Ventures, Inc. | Louisiana | 687 BBLs | 39,684 MCF | Mar 1998 - Dec 2024 |
| Missaukee Oil And Gas Company LLC | Michigan | 6,396 BBLs | 23,138 MCF | Sep 2019 - May 2026 |
| Missouri River Resources ND, LLC | North Dakota | 5,697 BBLs | 30,722 MCF | Nov 2014 - Jun 2026 |
| Mobil Oil Exploration & Producing Southeast, Inc. | Alabama | 0 BBLs | 507,209 MCF | Aug 1976 - Jun 2026 |
| Mogo Reagan, LLC | Montana | 3,268 BBLs | 9,201 MCF | Nov 2019 - Jun 2026 |
| Moncrief W A Jr | Wyoming | 692 BBLs | 21,374 MCF | Jan 1978 - Jun 2026 |
| Montalban Oil & Gas Operations, Inc. | Montana | 2,526 BBLs | 61,433 MCF | Jan 1991 - Jun 2026 |
| Morgenstern Oil Operations LLC | Kansas | 1,950 BBLs | 0 MCF | Jan 2020 - Apr 2026 |
| Morningstar Operating LLC | Colorado | 0 BBLs | 197,488 MCF | Jun 2001 - May 2026 |
| Morningstar Operating LLC | Montana | 264,831 BBLs | 436,062 MCF | Jan 2024 - Jun 2026 |
| Morningstar Operating LLC | New Mexico | 110,890 BBLs | 3,033,219 MCF | Sep 2020 - Jun 2026 |
| Morningstar Operating LLC | North Dakota | 38,238 BBLs | 40,637 MCF | Oct 2024 - Jun 2026 |
| Mosbacher Energy Company | Mississippi | 12,724 BBLs | 7,399 MCF | Dec 1976 - May 2026 |
| Mr NM Operating LLC | New Mexico | 7,604 BBLs | 38,581 MCF | Mar 2021 - Jun 2026 |
| MTM Petroleum, Inc. | Kansas | 310 BBLs | 21,794 MCF | Jan 1980 - Apr 2026 |
| Mull Drilling Company Inc | Colorado | 23,705 BBLs | 176,804 MCF | Jan 1999 - May 2026 |
| Mull Drilling Company, Inc. | Kansas | 17,360 BBLs | 9,587 MCF | Jan 1980 - Apr 2026 |
| Murex Petroleum Corporation | North Dakota | 174,331 BBLs | 488,386 MCF | Apr 2001 - Jun 2026 |
| Murfin Drilling Co., Inc. | Kansas | 80,121 BBLs | 1,421 MCF | Jan 1980 - Apr 2026 |
| Murfin Drilling Company, Inc. | North Dakota | 21,459 BBLs | 13,935 MCF | Feb 2025 - Jun 2026 |
| Murphrey Oil Company, Inc. | Louisiana | 3,563 BBLs | 0 MCF | Feb 2020 - Jan 2025 |
| Muskegon Operating Company LLC | Michigan | 25,965 BBLs | 321,416 MCF | Jan 2021 - May 2026 |
| Mustang Energy Corporation | Kansas | 6,571 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Mustang Holding, LLC (Finnex) | Alaska | 20,404 BBLs | 25,293 MCF | Dec 2024 - Feb 2026 |
| Mustang Resources LLC | New Mexico | 71 BBLs | 80,923 MCF | Sep 2018 - Jun 2026 |
| Mustang Resources LLC | Wyoming | 619 BBLs | 135,849 MCF | Nov 2014 - Jun 2026 |
| Muzyl Oil Corp | Michigan | 267 BBLs | 158,564 MCF | Nov 2016 - Jul 2026 |
| MWK Petroleum, LLC | Kansas | 1,982 BBLs | 0 MCF | Jan 2020 - Apr 2026 |
| Nadel And Gussman LLC | Kansas | 1,992 BBLs | 2,910 MCF | Jan 1980 - Apr 2026 |
| Nadel And Gussman Ruston, LLC | Louisiana | 7,961 BBLs | 1,173,013 MCF | Mar 2012 - Dec 2024 |
| Natural Gas Processing Company | Wyoming | 2,068 BBLs | 11,692 MCF | Feb 1978 - Jun 2026 |
| Navigation Powder River LLC | Wyoming | 14,133 BBLs | 64,014 MCF | Dec 2016 - Jun 2026 |
| Nec Operating - Kansas, LLC | Kansas | 1,738 BBLs | 4,459 MCF | Jan 2020 - Apr 2026 |
| Neptune Operating LLC | North Dakota | 551,955 BBLs | 1,560,479 MCF | Jan 2023 - Jun 2026 |
| New Age Oil LLC | Kansas | 2,165 BBLs | 0 MCF | Feb 1982 - Apr 2026 |
| New Horizon Resources LLC | Montana | 7,592 BBLs | 537 MCF | Feb 2022 - Jun 2026 |
| Nnogc Exploration & Production, LLC | Utah | 10,361 BBLs | 27,729 MCF | Nov 2012 - Jul 2026 |
| Noble Energy Inc | Colorado | 2,707,252 BBLs | 19,686,391 MCF | Jan 1999 - May 2026 |
| Norstar Petroleum, Inc. | Kansas | 1,288 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| North Fork Operating, LP | New Mexico | 3,004 BBLs | 36,109 MCF | Jan 2020 - Jun 2026 |
| North Shore Exploration & Prod LLC | Wyoming | 191 BBLs | 87,149 MCF | May 2015 - Jun 2026 |
| North Shore Exploration & Production, LLC | Utah | 170 BBLs | 39,569 MCF | Oct 2019 - Jun 2026 |
| North Silo Resources LLC | Wyoming | 88,385 BBLs | 167,386 MCF | Sep 2019 - Jun 2026 |
| North Slope Borough | Alaska | 0 BBLs | 155,984 MCF | Sep 1950 - Feb 2026 |
| Northern Lights Oil Company, LLC | Kansas | 1,421 BBLs | 588 MCF | Jan 1980 - Apr 2026 |
| Northern Oil Production, Inc. | Montana | 5,621 BBLs | 2,110 MCF | May 1992 - Jun 2026 |
| Northwestern Corporation | Montana | 430 BBLs | 339,340 MCF | Apr 2004 - Jun 2026 |
| Novo Oil & Gas Northern Delaware, LLC | New Mexico | 295,118 BBLs | 2,189,592 MCF | Feb 2018 - Jun 2026 |
| Novy Oil & Gas, Inc. | Kansas | 1,316 BBLs | 0 MCF | Jan 1980 - Apr 2026 |