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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Missaukee Oil And Gas Company LLC | Michigan | 6,778 BBLs | 20,743 MCF | Sep 2019 - Apr 2026 |
| Missouri River Resources ND, LLC | North Dakota | 5,697 BBLs | 30,722 MCF | Nov 2014 - May 2026 |
| Mobil Oil Exploration & Producing Southeast, Inc. | Alabama | 563 BBLs | 598,131 MCF | Aug 1976 - Mar 2026 |
| Mogo Reagan, LLC | Montana | 3,008 BBLs | 9,154 MCF | Nov 2019 - Apr 2026 |
| Molitor Oil, Inc. | Kansas | 966 BBLs | 2,900 MCF | Jan 1980 - Mar 2026 |
| Moncrief W A Jr | Wyoming | 775 BBLs | 19,522 MCF | Jan 1978 - May 2026 |
| Montalban Oil & Gas Operations, Inc. | Montana | 2,802 BBLs | 63,067 MCF | Jan 1991 - Apr 2026 |
| Montex Drilling Company LLC | Wyoming | 852 BBLs | 3,782 MCF | Feb 2025 - May 2026 |
| Morgenstern Oil Operations LLC | Kansas | 1,594 BBLs | 0 MCF | Jan 2020 - Mar 2026 |
| Morningstar Operating LLC | Colorado | 0 BBLs | 177,407 MCF | Jun 2001 - Mar 2026 |
| Morningstar Operating LLC | Montana | 304,346 BBLs | 476,065 MCF | Jan 2024 - Apr 2026 |
| Morningstar Operating LLC | New Mexico | 113,574 BBLs | 3,191,021 MCF | Sep 2020 - Apr 2026 |
| Morningstar Operating LLC | North Dakota | 38,238 BBLs | 40,637 MCF | Oct 2024 - May 2026 |
| Mr NM Operating LLC | New Mexico | 5,898 BBLs | 30,359 MCF | Mar 2021 - May 2026 |
| MTM Petroleum, Inc. | Kansas | 467 BBLs | 20,214 MCF | Jan 1980 - Mar 2026 |
| Mull Drilling Company Inc | Colorado | 22,343 BBLs | 142,642 MCF | Jan 1999 - Mar 2026 |
| Mull Drilling Company, Inc. | Kansas | 15,140 BBLs | 8,358 MCF | Jan 1980 - Mar 2026 |
| Mulloy Operating, Inc. | New Mexico | 6,179 BBLs | 5,678 MCF | Jul 2006 - Apr 2026 |
| Murex Petroleum Corporation | North Dakota | 174,351 BBLs | 488,386 MCF | Apr 2001 - May 2026 |
| Murfin Drilling Co., Inc. | Kansas | 67,820 BBLs | 1,364 MCF | Jan 1980 - Mar 2026 |
| Murfin Drilling Company, Inc. | North Dakota | 16,448 BBLs | 11,421 MCF | Mar 2025 - May 2026 |
| Murphrey Oil Company, Inc. | Louisiana | 3,563 BBLs | 0 MCF | Feb 2020 - Jan 2025 |
| Muskegon Operating Company LLC | Michigan | 25,806 BBLs | 321,717 MCF | Jan 2021 - Apr 2026 |
| Mustang Energy Corporation | Kansas | 4,075 BBLs | 0 MCF | Jan 1980 - Mar 2026 |
| Mustang Holding, LLC (Finnex) | Alaska | 20,404 BBLs | 25,293 MCF | Dec 2024 - Feb 2026 |
| Mustang Resources LLC | New Mexico | 183 BBLs | 83,568 MCF | Sep 2018 - Apr 2026 |
| Mustang Resources LLC | Wyoming | 106 BBLs | 133,069 MCF | Nov 2014 - Apr 2026 |
| Muzyl Oil Corp | Michigan | 0 BBLs | 160,571 MCF | Nov 2016 - May 2026 |
| MWK Petroleum, LLC | Kansas | 2,298 BBLs | 0 MCF | Jan 2020 - Mar 2026 |
| Nadel And Gussman LLC | Kansas | 1,500 BBLs | 2,684 MCF | Jan 1980 - Mar 2026 |
| Nadel And Gussman Ruston, LLC | Louisiana | 7,961 BBLs | 1,173,013 MCF | Mar 2012 - Dec 2024 |
| Natural Gas Processing Company | Wyoming | 847 BBLs | 8,393 MCF | Feb 1978 - May 2026 |
| Navigation Powder River LLC | Wyoming | 14,220 BBLs | 63,440 MCF | Dec 2016 - May 2026 |
| Nec Operating - Kansas, LLC | Kansas | 1,418 BBLs | 2,709 MCF | Jan 2020 - Mar 2026 |
| Neptune Operating LLC | North Dakota | 551,955 BBLs | 1,560,479 MCF | Jan 2023 - May 2026 |
| New Age Oil LLC | Kansas | 2,018 BBLs | 0 MCF | Feb 1982 - Mar 2026 |
| New Era Petroleum Inc | Wyoming | 2,013 BBLs | 0 MCF | Feb 2010 - May 2026 |
| New Horizon Resources LLC | Montana | 7,615 BBLs | 412 MCF | Feb 2022 - Apr 2026 |
| Nnogc Exploration & Production, LLC | Utah | 10,874 BBLs | 28,288 MCF | Nov 2012 - May 2026 |
| Nnogc Exploration And Production, LLC | New Mexico | 919 BBLs | 2,658 MCF | Oct 2012 - May 2026 |
| Noble Energy Inc | Colorado | 2,621,900 BBLs | 19,977,612 MCF | Jan 1999 - Apr 2026 |
| Norstar Petroleum, Inc. | Kansas | 1,618 BBLs | 0 MCF | Jan 1980 - Mar 2026 |
| North Fork Operating, LP | New Mexico | 3,252 BBLs | 39,252 MCF | Jan 2020 - Apr 2026 |
| North Shore Exploration & Prod LLC | Wyoming | 1,988 BBLs | 147,180 MCF | May 2015 - May 2026 |
| North Silo Resources LLC | Wyoming | 95,959 BBLs | 157,307 MCF | Sep 2019 - May 2026 |
| North Slope Borough | Alaska | 0 BBLs | 155,984 MCF | Sep 1950 - Feb 2026 |
| Northern Lights Oil Company, LLC | Kansas | 1,459 BBLs | 527 MCF | Jan 1980 - Mar 2026 |
| Northern Oil Production, Inc. | Montana | 6,489 BBLs | 2,244 MCF | May 1992 - Apr 2026 |
| Northwestern Corporation | Montana | 271 BBLs | 336,091 MCF | Apr 2004 - Apr 2026 |
| Northwoods Land Inc | Wyoming | 10,722 BBLs | 13,104 MCF | Jan 2026 - Apr 2026 |