| 18501 | Marsha Azar | | Oil & Gas Operator | Jan 2017 |
| 18502 | Marshall & McCain | | Oil & Gas Operator | Oct 1988 |
| 18503 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 18504 | Marshall Energy, Inc. | Dallas, TX 75243 | Oil & Gas Operator | May 1997 |
| 18505 | Marshall Exploration, Inc. | | Oil & Gas Operator | Jun 1992 |
| 18506 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 18507 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 18508 | Marshall Oil, LLC | Eureka, KS 67045 | Oil Operator | Dec 2024 |
| 18509 | Marshall Petroleum, Inc. | Houston, TX 77040 | Oil & Gas Operator | Aug 2003 |
| 18510 | Marshall Pipe & Supply Co. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2008 |
| 18511 | Marshall Prod. & Energy Inc. | | Oil & Gas Operator | Jan 1992 |
| 18512 | Marshall Production Co Inc | | Oil & Gas Operator | Jun 1989 |
| 18513 | Marshall R Young Oil Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1996 |
| 18514 | Marshall R. Young Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 18515 | Marshall Richard R | Jeromesville, OH 44840 | Oil & Gas Operator | Dec 2023 |
| 18516 | Marshall Young Oil Co | | Oil & Gas Operator | Jan 2007 |
| 18517 | Marshall, A. B. | Houston, TX 77050 | Oil & Gas Operator | Sep 1995 |
| 18518 | Marshall, Dale | | Gas Operator | Dec 1995 |
| 18519 | Marshall, Sam | Granbury, TX 76048 | Oil & Gas Operator | Aug 2010 |
| 18520 | Marshall, Samuel Meek, Estate Of | Granbury, TX 76048 | Oil & Gas Operator | Apr 2025 |
| 18521 | Marshco Production LLC | Colorado City, TX 79512 | Oil Operator | Apr 2025 |
| 18522 | Marshel Inv | | Oil Operator | Oct 1991 |
| 18523 | Marshfield Oil & Gas, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2025 |
| 18524 | Marshland Exploration Company | | Oil & Gas Operator | May 2006 |
| 18525 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 18526 | Martens & Peck Operating Co | | Gas Operator | Feb 1997 |
| 18527 | Martens & Peck Production Co | Denver, CO 80222 | Oil & Gas Operator | Feb 1997 |
| 18528 | Martex Oil & Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | Apr 2025 |
| 18529 | Martin & Richards Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 1995 |
| 18530 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 18531 | Martin Bros. Oil | Graham, TX 76450 | Oil & Gas Operator | Dec 1993 |
| 18532 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 18533 | Martin Cannon Interests, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 18534 | Martin Energy LLC | | Oil & Gas Operator | Apr 2023 |
| 18535 | Martin Exploration | Westminster, CO 80030 | Oil & Gas Operator | Dec 1993 |
| 18536 | Martin Exploration Co. | | Oil & Gas Operator | Apr 1986 |
| 18537 | Martin Foree Operating II, LLC | Royse City, TX 75189 | Oil & Gas Operator | Apr 2025 |
| 18538 | Martin Foree Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | Apr 2025 |
| 18539 | Martin Gas Sales, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | May 1993 |
| 18540 | Martin J S Oil O | | Oil & Gas Operator | Apr 1991 |
| 18541 | Martin Jim & Julie | Wynona, OK 74084 | Oil & Gas Operator | Jan 2025 |
| 18542 | Martin John R | Cushing, OK 74023 | Oil & Gas Operator | Apr 1995 |
| 18543 | Martin Larrey C | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 18544 | Martin Larry And/Or Sheila Dba Three Stooges Oil | Pawnee, OK 74058 | Oil Operator | Feb 2025 |
| 18545 | Martin Matrix Inc. | San Angelo, TX 76905 | Oil & Gas Operator | Apr 2025 |
| 18546 | Martin Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Jan 2025 |
| 18547 | Martin Oil & Gas Co. | | Oil Operator | Jul 1981 |
| 18548 | Martin Oil & Gas Inc. | Freer, TX 78357 | Oil & Gas Operator | Apr 2025 |
| 18549 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 18550 | Martin Oil LLC | Madison, KS 66860 | Oil Operator | Dec 2024 |
| 18551 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 18552 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 18553 | Martin Oil Properties | | Oil Operator | Dec 2009 |
| 18554 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 18555 | Martin Phillips | | Oil Operator | Dec 1987 |
| 18556 | Martin Production Company | | Oil & Gas Operator | Dec 2024 |
| 18557 | Martin Production Corporation | Graham, TX 76450 | Oil Operator | Feb 2025 |
| 18558 | Martin Tank Truck & Casing Pulling Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2015 |
| 18559 | Martin Well Service | Graham, TX 76450 | Oil & Gas Operator | Jun 2015 |
| 18560 | Martin Well Service Company | Mineral Wells, TX 76067 | Oil & Gas Operator | Jul 2006 |
| 18561 | Martin'S Resources LLC | Woodward, OK 73801-5641 | Oil & Gas Operator | Jan 2025 |
| 18562 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 18563 | Martin, Dail D. | Madison, KS 66860 | Oil Operator | Dec 2019 |
| 18564 | Martin, Jimmy Inc | San Angelo, TX 76904 | Oil & Gas Operator | Apr 2025 |
| 18565 | Martin, John I. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 18566 | Martin, Landis | Geneva, NY 14456 | Gas Operator | Dec 2023 |
| 18567 | Martin, Pat Jr. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2019 |
| 18568 | Martin, Philip H. | Ellis, KS 67637 | Oil Operator | Apr 2000 |
| 18569 | Martin, Tim | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2003 |
| 18570 | Martin, William C. | Houston, TX 77071 | Oil & Gas Operator | Apr 2025 |
| 18571 | Martin-Marks Operating Co. LLC | | Oil & Gas Operator | Dec 2010 |
| 18572 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 18573 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 18574 | Martino, Joseph C. | Pasadena, TX 77504 | Oil & Gas Operator | Apr 2025 |
| 18575 | Martis Valley Energy, LLC | Wichita Falls, TX 76310 | Oil Operator | Apr 2025 |
| 18576 | Marvel Joseph Shawn | Haskell, OK 74436 | Oil Operator | Jan 2025 |
| 18577 | Marvin L. Muslow | | Oil Operator | Jun 1995 |
| 18578 | Marvin Sanders Oil | Sugar Grove, PA 16350-5612 | Oil & Gas Operator | Dec 2016 |
| 18579 | Marwell Petroleum LTD Partnrship | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 18580 | Marwell Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2006 |
| 18581 | Mary E. Wertalla | | Oil Operator | Dec 1984 |
| 18582 | Marymac Company | Dallas, TX 75219-2362 | Oil & Gas Operator | Mar 2015 |
| 18583 | Marymac Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Sep 2001 |
| 18584 | Mas Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 18585 | Masa Energy LLC | Houston, TX 77094 | Oil & Gas Operator | Apr 2025 |
| 18586 | Masada Development Company | Lubbock, TX 79416 | Oil & Gas Operator | Nov 2021 |
| 18587 | Masada Oil & Gas | Quanah, TX 79252 | Oil & Gas Operator | Apr 2025 |
| 18588 | Masada Oil & Gas Company LTD. | Abilene, TX 79603 | Oil & Gas Operator | Apr 2025 |
| 18589 | Mascorella, Timothy James | Java Center, NY 14082 | Gas Operator | Dec 2023 |
| 18590 | Mascot Oil Company | Schulenburg, TX 78956 | Oil & Gas Operator | Apr 2025 |
| 18591 | Masek Oil Compan | | Oil Operator | Feb 1984 |
| 18592 | Mash Oilfield Services, LP | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 18593 | Masham Production Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2000 |
| 18594 | Mask Thomas B | | Oil & Gas Operator | Jul 1991 |
| 18595 | Mask Thomas B And Markel Ray D | | Oil & Gas Operator | Jul 1991 |
| 18596 | Mask Thomas B And Markel Ray D And Wood K P | | Oil & Gas Operator | Aug 1986 |
| 18597 | Mask Thomas B And Patrick Petroleum Corp | | Oil & Gas Operator | Jun 1992 |
| 18598 | Maskeny Edward D | | Oil & Gas Operator | Jun 1998 |
| 18599 | Mason Drilling Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2022 |
| 18600 | Mason John C | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1994 |