| 19401 | Minatome Corpora | | Oil & Gas Operator | Sep 1987 |
| 19402 | Minco Oil And Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2024 |
| 19403 | Minden Oil & Gas, Inc. | | Oil & Gas Operator | May 1985 |
| 19404 | Minel Inc | Richardson, TX 75080 | Oil & Gas Operator | Aug 2024 |
| 19405 | Miner Rick | Drumright, OK 74030-0373 | Oil & Gas Operator | Feb 2025 |
| 19406 | Miner Rick Oil Inc | Drumright, OK 74030-0373 | Oil & Gas Operator | Apr 2022 |
| 19407 | Miner, R. C. Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 2002 |
| 19408 | Miner, R. C. Oil, Inc. | MC Queeney, TX 78123 | Oil & Gas Operator | May 2025 |
| 19409 | Mineral Development, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1996 |
| 19410 | Mineral Resource Management, L.L.C. | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2021 |
| 19411 | Mineral Resources & Engineering | Aladdin, WY 82710 | Oil Operator | Jul 1991 |
| 19412 | Mineral Resources, Incorporated | Lewisville, TX 75029 | Oil & Gas Operator | May 2025 |
| 19413 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | May 2025 |
| 19414 | Mineral Ventures, Inc. | | Oil & Gas Operator | Dec 2024 |
| 19415 | Minerals MGMT Group, Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2021 |
| 19416 | Minerex Engineering Corp. | | Oil & Gas Operator | Mar 2004 |
| 19417 | Minerva Oil Company | Tulsa, OK 74152-0858 | Oil & Gas Operator | Mar 2015 |
| 19418 | Minexprod LLC | Katy, TX 77494 | Oil Operator | May 2025 |
| 19419 | Mingo Oil Producers | Salt Lake City, UT 84111 | Oil & Gas Operator | Nov 1987 |
| 19420 | Mingus Oil & Gas | Mingus, TX 76463 | Oil & Gas Operator | May 2025 |
| 19421 | Minihan Oil & Gas Corporation | Midland, TX 79704 | Oil & Gas Operator | Apr 2004 |
| 19422 | Minihan Oil & Gas LTD. | Denver, CO 80202 | Oil & Gas Operator | Jul 2006 |
| 19423 | Minihan Oil And Gas Company | Seminole, OK 74868-9790 | Oil & Gas Operator | Sep 2014 |
| 19424 | Minihan Production Co | Seminole, OK 74868 | Oil & Gas Operator | Jan 1997 |
| 19425 | Mink Oil Company | | Oil Operator | Nov 2003 |
| 19426 | Mink Richard | Cement, OK 73017 | Oil & Gas Operator | Feb 2025 |
| 19427 | Mink, Jay, Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Aug 2017 |
| 19428 | Minnelusa Oil LLC | Temecula, CA 92589 | Oil Operator | Feb 2002 |
| 19429 | Minner Oil Field Service | | Oil Operator | Jul 2008 |
| 19430 | Minor Jr W T | Wichita Falls, TX 76307 | Oil Operator | Nov 1998 |
| 19431 | Minor Mark | FT Worth, TX 76116-1003 | Oil Operator | Nov 2015 |
| 19432 | Minteer & Baker Gas Enterprise | Worthington, PA 16262-0739 | Gas Operator | Dec 2024 |
| 19433 | Minter Lee M | Bradford, PA 16701-3763 | Gas Operator | Dec 1991 |
| 19434 | Minton Oil & Gas Properties | Graford, TX 76449 | Gas Operator | May 2025 |
| 19435 | Minuja Oil And Gas LLC | Corpus Christi, TX 78401 | Oil & Gas Operator | Sep 1996 |
| 19436 | Minute Hand LLC | Brenham, TX 77834 | Oil & Gas Operator | May 2025 |
| 19437 | Minuteman Drilling | | Gas Operator | Dec 2021 |
| 19438 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 19439 | Minyak Producing Company, Inc. | Sabine Pass, TX 77655 | Oil & Gas Operator | May 2025 |
| 19440 | Miocene Oil & Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jul 1998 |
| 19441 | Miocene Oil & Gas, LTD. | Englewood, CO 80110 | Oil & Gas Operator | May 2025 |
| 19442 | Mir-Tex Energy Corp. | Mirando City, TX 78369 | Oil & Gas Operator | Aug 2003 |
| 19443 | Miracle Petroleum LLC | | Oil & Gas Operator | Oct 2018 |
| 19444 | Miracle Production Inc | Yukon, OK 73085-0680 | Oil & Gas Operator | Jun 2007 |
| 19445 | Mirage Energy Inc | Eunice, NM 88231 | Oil & Gas Operator | Apr 2011 |
| 19446 | Miramar Petroleum, Inc. | Corpus Chrsti, TX 78463 | Oil & Gas Operator | Sep 2017 |
| 19447 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 19448 | Mirando Crude Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jul 1994 |
| 19449 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | May 2025 |
| 19450 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |
| 19451 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 19452 | Misc Oil Co | Oilmont, MT 59466 | Oil Operator | Jan 2025 |
| 19453 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 19454 | Mishler Oil | | Oil Operator | May 1989 |
| 19455 | Miss Basin Oil & Gas Company | | Oil Operator | Jan 1985 |
| 19456 | Miss Chub LLC | | Gas Operator | Dec 2024 |
| 19457 | Miss Lou Oil Producers, Inc. | | Oil & Gas Operator | Dec 1998 |
| 19458 | Miss-Lou Operating LLC | | Oil & Gas Operator | Feb 2025 |
| 19459 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
| 19460 | Missala Inc | | Oil & Gas Operator | Dec 1995 |
| 19461 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Feb 2025 |
| 19462 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2024 |
| 19463 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 19464 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 19465 | Mission Exploration, Inc. | Tolar, TX 76476 | Oil & Gas Operator | Dec 1987 |
| 19466 | Mission Leasing LTD | Tulsa, OK 74136 | Oil Operator | Dec 2000 |
| 19467 | Mission Oil & Gas | Pawhuska, OK 74056 | Oil Operator | May 2013 |
| 19468 | Mission Oil Company | | Oil & Gas Operator | Feb 2025 |
| 19469 | Mission Resources | | Oil & Gas Operator | Dec 1991 |
| 19470 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 19471 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2025 |
| 19472 | Mississippi Resources, LLC Dba MSR Operating, LLC | | Oil & Gas Operator | May 2021 |
| 19473 | Mississippi River Transm. Corp | | Oil & Gas Operator | Sep 2002 |
| 19474 | Mississippi Valley Gas Co | | Oil & Gas Operator | Aug 1984 |
| 19475 | Mississippi Ventures | | Gas Operator | Feb 1992 |
| 19476 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 19477 | Missouri Basin Well Service, Inc. | Belfield, ND 58622 | Oil & Gas Operator | Jan 2018 |
| 19478 | Missouri Breaks, LLC | | Oil & Gas Operator | Jun 2011 |
| 19479 | Missouri River R | | Gas Operator | Jun 1993 |
| 19480 | Missouri River Resources ND, LLC | | Oil & Gas Operator | Mar 2025 |
| 19481 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | Mar 2025 |
| 19482 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 19483 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | May 2025 |
| 19484 | Mitch Well Energy Inc | Waterford, PA 16441-8143 | Oil & Gas Operator | Dec 2012 |
| 19485 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 19486 | Mitchell Cecil D | Haskell, OK 74436-7667 | Oil & Gas Operator | Apr 2020 |
| 19487 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19488 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 19489 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 19490 | Mitchell Energy & Goodrich Oil | | Oil & Gas Operator | Feb 1985 |
| 19491 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 19492 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 19493 | Mitchell M J | | Oil & Gas Operator | Jan 1983 |
| 19494 | Mitchell Martha | Henryetta, OK 74437-0488 | Oil & Gas Operator | Apr 2011 |
| 19495 | Mitchell Oil | | Oil Operator | Feb 2025 |
| 19496 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19497 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 19498 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 19499 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 19500 | Mitchell-Grossu Oil Co. | | Oil & Gas Operator | Sep 2023 |