| 19501 | Mitchwil Investments LLC | | Oil & Gas Operator | Dec 2019 |
| 19502 | Miti-Mini Inc | Wetumka, OK 74883-6172 | Gas Operator | Jul 2016 |
| 19503 | Mito Resources LLC | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 19504 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 19505 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 19506 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 19507 | Miura Petroleum, Inc. | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 19508 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 19509 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | May 2025 |
| 19510 | Mize Energy Producers, LLC | | Oil & Gas Operator | Nov 2024 |
| 19511 | Mize Operations, LLC. | | Oil & Gas Operator | Dec 2018 |
| 19512 | MJ Energy Company, LLC | Kilgore, TX 75663 | Oil Operator | May 2025 |
| 19513 | MJ Energy, LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 19514 | MJ Energy, LLC Of Arkansas | | Oil Operator | Jan 2025 |
| 19515 | MJ Goetz Bonding, LLC | Bartlesville, OK 74006 | Oil Operator | Feb 2025 |
| 19516 | MJ Oil Company | Minerva, OH 44657 | Oil & Gas Operator | Dec 2008 |
| 19517 | MJ Oil, Inc. | Houston, TX 77265 | Oil & Gas Operator | May 2025 |
| 19518 | MJB Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | May 2025 |
| 19519 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | May 2025 |
| 19520 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 19521 | MJM Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2025 |
| 19522 | MJT Oil | | Oil Operator | Jan 2025 |
| 19523 | MK Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2014 |
| 19524 | MK Operating Company LLC | Cedar Park, TX 78613 | Oil & Gas Operator | May 2025 |
| 19525 | Mka Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Sep 1997 |
| 19526 | Mke Producing Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 2024 |
| 19527 | MKJ Oil Co LLC | Harper, KS 67058 | Oil & Gas Operator | Jan 2025 |
| 19528 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |
| 19529 | MKS Natural Gas Company | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2016 |
| 19530 | ML Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 19531 | MLB Operating Services, LLC | Tenn Colony, TX 75861 | Oil & Gas Operator | May 2025 |
| 19532 | MLC Co., Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 1996 |
| 19533 | MLC Operating, LP | Houston, TX 77063 | Oil & Gas Operator | May 2025 |
| 19534 | MLC Resources LLC | Kingfisher, OK 73750-0364 | Oil & Gas Operator | Jan 2025 |
| 19535 | MLF, Inc. | Houston, TX 77096 | Gas Operator | Nov 2009 |
| 19536 | MLGW | | Gas Operator | Sep 1984 |
| 19537 | MLT Energy, LLC | Derby, KS 67037 | Oil Operator | Feb 2025 |
| 19538 | MLX Operating, Inc. | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 19539 | MM China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | May 2025 |
| 19540 | MMD Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2000 |
| 19541 | MMG Oil Company | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2006 |
| 19542 | MMGL East Texas II, LLC | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 19543 | MMGL East Texas III, LLC | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 19544 | MMGL TXPH, LLC | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 19545 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | May 2025 |
| 19546 | Mo-Jon, Inc. | Edroy, TX 78352 | Oil & Gas Operator | May 1999 |
| 19547 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 19548 | Mo-Ky | | Oil Operator | Dec 1982 |
| 19549 | Moabb Oil Corp | | Oil & Gas Operator | Apr 1998 |
| 19550 | Mob Corp | Waynesburg, PA 15370-2036 | Gas Operator | Dec 2007 |
| 19551 | Mobay Storage Hub LLC | | Gas Operator | Oct 2008 |
| 19552 | Mobeetie Resource Dev LLC | Booker, TX 79005 | Oil & Gas Operator | May 2025 |
| 19553 | Mobil E&P N.A.-Pel-Tex | | Oil & Gas Operator | Dec 1993 |
| 19554 | Mobil E&P N.A.-WM Scully Et Al | | Oil & Gas Operator | Dec 1993 |
| 19555 | Mobil E&P North America Inc. | | Oil & Gas Operator | Jan 1994 |
| 19556 | Mobil Exp & Prod Us Inc | Houston, TX 77060-1991 | Oil & Gas Operator | May 2001 |
| 19557 | Mobil Expl & Producing North America Inc | | Oil & Gas Operator | Nov 1986 |
| 19558 | Mobil Explor & Prod | Cortez, CO 81321 | Oil & Gas Operator | May 2001 |
| 19559 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 19560 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 19561 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
| 19562 | Mobil Oil E&P Se Inc - Pel-Tex | | Oil & Gas Operator | Dec 2005 |
| 19563 | Mobil Oil Expl & Prod S E | | Oil & Gas Operator | Dec 1979 |
| 19564 | Mobil Oil Exploration & Producing Southeast, Inc. | | Oil & Gas Operator | Feb 2025 |
| 19565 | Mobil Oil Exploration & Production North America Inc. | | Oil & Gas Operator | Dec 1996 |
| 19566 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | May 2025 |
| 19567 | Mobil Producing Texas & New Mexico | Denver City, TX 79323 | Oil & Gas Operator | Jun 2005 |
| 19568 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 19569 | Mobile Gulf, Inc. | | Oil & Gas Operator | Aug 1985 |
| 19570 | Mobile Petrovac, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 19571 | Mobile Production Systems, Inc. | Austin, TX 78711 | Oil & Gas Operator | Feb 1995 |
| 19572 | Mobley & Davis | | Oil & Gas Operator | Oct 1986 |
| 19573 | Mobley & McCain | | Oil & Gas Operator | Nov 1979 |
| 19574 | Mobley & McCain, Et Al | | Oil & Gas Operator | Jul 1986 |
| 19575 | Mobley Oil Company, Inc. | | Oil & Gas Operator | Feb 1990 |
| 19576 | Mobley Valve Service, Inc. | | Oil & Gas Operator | Nov 2006 |
| 19577 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | May 2025 |
| 19578 | Mobreal Oil Inc | Wilmington, DE 19808 | Oil & Gas Operator | Dec 1989 |
| 19579 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 19580 | Moco Oil Inc | | Oil Operator | May 1984 |
| 19581 | Moco Operating Company | | Oil & Gas Operator | Mar 2002 |
| 19582 | Mode Oil & Gasdev LTD12/21/Ofb 9-98 | | Oil & Gas Operator | May 2013 |
| 19583 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 19584 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | May 2025 |
| 19585 | Modus Inc. | | Oil & Gas Operator | Mar 2025 |
| 19586 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | May 2025 |
| 19587 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 19588 | Moffitt W G Trust | Fort Gibson, OK 74434-4258 | Gas Operator | Nov 2019 |
| 19589 | Mogo Reagan, LLC | Cut Bank, MT 59427 | Oil & Gas Operator | Mar 2025 |
| 19590 | Mogul Energy Corp | Los Angeles, CA 90024 | Oil & Gas Operator | Jan 2001 |
| 19591 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 19592 | Mogul Operating LLC | St Petersburg, FL 33706 | Oil Operator | May 2025 |
| 19593 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | May 2025 |
| 19594 | Mohawk Operating LLC | Oklahoma City, OK 73173-8907 | Gas Operator | Feb 2004 |
| 19595 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 19596 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 19597 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 19598 | Mohican Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 19599 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 19600 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |