| 19401 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | Jun 2025 |
| 19402 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |
| 19403 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 19404 | Misc Oil Co | Oilmont, MT 59466 | Oil Operator | Jan 2025 |
| 19405 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 19406 | Mishler Oil | | Oil Operator | May 1989 |
| 19407 | Miss Basin Oil & Gas Company | | Oil Operator | Jan 1985 |
| 19408 | Miss Chub LLC | | Gas Operator | Dec 2024 |
| 19409 | Miss Lou Oil Producers, Inc. | | Oil & Gas Operator | Dec 1998 |
| 19410 | Miss-Lou Operating LLC | | Oil & Gas Operator | Apr 2025 |
| 19411 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
| 19412 | Missala Inc | | Oil & Gas Operator | Dec 1995 |
| 19413 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Mar 2025 |
| 19414 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2024 |
| 19415 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 19416 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 19417 | Mission Exploration, Inc. | Tolar, TX 76476 | Oil & Gas Operator | Dec 1987 |
| 19418 | Mission Leasing LTD | Tulsa, OK 74136 | Oil Operator | Dec 2000 |
| 19419 | Mission Oil & Gas | Pawhuska, OK 74056 | Oil Operator | May 2013 |
| 19420 | Mission Oil Company | | Oil & Gas Operator | Mar 2025 |
| 19421 | Mission Resources | | Oil & Gas Operator | Dec 1991 |
| 19422 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 19423 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jun 2025 |
| 19424 | Mississippi Resources, LLC Dba MSR Operating, LLC | | Oil & Gas Operator | May 2021 |
| 19425 | Mississippi River Transm. Corp | | Oil & Gas Operator | Sep 2002 |
| 19426 | Mississippi Valley Gas Co | | Oil & Gas Operator | Aug 1984 |
| 19427 | Mississippi Ventures | | Gas Operator | Feb 1992 |
| 19428 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 19429 | Missouri Basin Well Service, Inc. | Belfield, ND 58622 | Oil & Gas Operator | Jan 2018 |
| 19430 | Missouri Breaks, LLC | | Oil & Gas Operator | Jun 2011 |
| 19431 | Missouri River R | | Gas Operator | Jun 1993 |
| 19432 | Missouri River Resources ND, LLC | | Oil & Gas Operator | Apr 2025 |
| 19433 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | Apr 2025 |
| 19434 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 19435 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Jun 2025 |
| 19436 | Mitch Well Energy Inc | Waterford, PA 16441-8143 | Oil & Gas Operator | Dec 2012 |
| 19437 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 19438 | Mitchell Cecil D | Haskell, OK 74436-7667 | Oil & Gas Operator | Apr 2020 |
| 19439 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19440 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | Jun 2025 |
| 19441 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 19442 | Mitchell Energy & Goodrich Oil | | Oil & Gas Operator | Feb 1985 |
| 19443 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 19444 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 19445 | Mitchell M J | | Oil & Gas Operator | Jan 1983 |
| 19446 | Mitchell Martha | Henryetta, OK 74437-0488 | Oil & Gas Operator | Apr 2011 |
| 19447 | Mitchell Oil | | Oil Operator | Mar 2025 |
| 19448 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19449 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 19450 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 19451 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 19452 | Mitchell-Grossu Oil Co. | | Oil & Gas Operator | Sep 2023 |
| 19453 | Mitchwil Investments LLC | | Oil & Gas Operator | Dec 2019 |
| 19454 | Miti-Mini Inc | Wetumka, OK 74883-6172 | Gas Operator | Jul 2016 |
| 19455 | Mito Resources LLC | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 19456 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 19457 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 19458 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 19459 | Miura Petroleum, Inc. | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 19460 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 19461 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Jun 2025 |
| 19462 | Mize Energy Producers, LLC | | Oil & Gas Operator | Nov 2024 |
| 19463 | Mize Operations, LLC. | | Oil & Gas Operator | Dec 2018 |
| 19464 | MJ Energy Company, LLC | Kilgore, TX 75663 | Oil Operator | Jun 2025 |
| 19465 | MJ Energy, LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 19466 | MJ Energy, LLC Of Arkansas | | Oil Operator | Jan 2025 |
| 19467 | MJ Goetz Bonding, LLC | Bartlesville, OK 74006 | Oil Operator | Mar 2025 |
| 19468 | MJ Oil Company | Minerva, OH 44657 | Oil & Gas Operator | Dec 2008 |
| 19469 | MJ Oil, Inc. | Houston, TX 77265 | Oil & Gas Operator | Jun 2025 |
| 19470 | MJB Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2025 |
| 19471 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Jun 2025 |
| 19472 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 19473 | MJM Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2025 |
| 19474 | MJT Oil | | Oil Operator | Feb 2025 |
| 19475 | MK Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2014 |
| 19476 | MK Operating Company LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2025 |
| 19477 | Mka Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Sep 1997 |
| 19478 | Mke Producing Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 2024 |
| 19479 | MKJ Oil Co LLC | Harper, KS 67058 | Oil & Gas Operator | Feb 2025 |
| 19480 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |
| 19481 | MKS Natural Gas Company | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2016 |
| 19482 | ML Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 19483 | MLB Operating Services, LLC | Tenn Colony, TX 75861 | Oil & Gas Operator | Jun 2025 |
| 19484 | MLC Co., Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 1996 |
| 19485 | MLC Operating, LP | Houston, TX 77063 | Oil & Gas Operator | Jun 2025 |
| 19486 | MLC Resources LLC | Kingfisher, OK 73750-0364 | Oil & Gas Operator | Jan 2025 |
| 19487 | MLF, Inc. | Houston, TX 77096 | Gas Operator | Nov 2009 |
| 19488 | MLGW | | Gas Operator | Sep 1984 |
| 19489 | MLT Energy, LLC | Derby, KS 67037 | Oil Operator | Mar 2025 |
| 19490 | MLX Operating, Inc. | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 19491 | MM China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2025 |
| 19492 | MMD Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2000 |
| 19493 | MMG Oil Company | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2006 |
| 19494 | MMGL East Texas II, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jun 2025 |
| 19495 | MMGL East Texas III, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jun 2025 |
| 19496 | MMGL TXPH, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jun 2025 |
| 19497 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Jun 2025 |
| 19498 | Mo-Jon, Inc. | Edroy, TX 78352 | Oil & Gas Operator | May 1999 |
| 19499 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 19500 | Mo-Ky | | Oil Operator | Dec 1982 |