| 18301 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 18302 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 18303 | Marshall Oil LLC | Eureka, KS 67045 | Oil Operator | Jun 2025 |
| 18304 | Marshall Petroleum, Inc. | Houston, TX 77040 | Oil & Gas Operator | Aug 2003 |
| 18305 | Marshall Pipe & Supply Co. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2008 |
| 18306 | Marshall Prod. & Energy Inc. | | Oil & Gas Operator | Jan 1992 |
| 18307 | Marshall Production Co Inc | | Oil & Gas Operator | Jun 1989 |
| 18308 | Marshall R Young Oil Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1996 |
| 18309 | Marshall R. Young Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 18310 | Marshall Richard R | Jeromesville, OH 44840 | Oil & Gas Operator | Dec 2023 |
| 18311 | Marshall Young Oil Co | | Oil & Gas Operator | Jan 2007 |
| 18312 | Marshall, A. B. | Houston, TX 77050 | Oil & Gas Operator | Sep 1995 |
| 18313 | Marshall, Dale | | Gas Operator | Dec 1995 |
| 18314 | Marshall, Sam | Granbury, TX 76048 | Oil & Gas Operator | Aug 2010 |
| 18315 | Marshall, Samuel Meek, Estate Of | Granbury, TX 76048 | Oil & Gas Operator | Dec 2025 |
| 18316 | Marshco Production LLC | Colorado City, TX 79512 | Oil Operator | Dec 2025 |
| 18317 | Marshel Inv | | Oil Operator | Oct 1991 |
| 18318 | Marshfield Oil & Gas, LLC | Houston, TX 77070 | Oil & Gas Operator | Dec 2025 |
| 18319 | Marshland Exploration Company | | Oil & Gas Operator | May 2006 |
| 18320 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 18321 | Martens & Peck Operating Co | | Gas Operator | Feb 1997 |
| 18322 | Martens & Peck Production Co | Denver, CO 80222 | Oil & Gas Operator | Feb 1997 |
| 18323 | Martex Oil & Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | Dec 2025 |
| 18324 | Martin & Richards Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 1995 |
| 18325 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 18326 | Martin Bros. Oil | Graham, TX 76450 | Oil & Gas Operator | Dec 1993 |
| 18327 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 18328 | Martin Cannon Interests, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 18329 | Martin Energy LLC | | Oil & Gas Operator | Apr 2023 |
| 18330 | Martin Exploration | Westminster, CO 80030 | Oil & Gas Operator | Dec 1993 |
| 18331 | Martin Exploration Co. | | Oil & Gas Operator | Apr 1986 |
| 18332 | Martin Family Living Revocable Trust | Konawa, OK 74849-2221 | Oil Operator | Jul 2025 |
| 18333 | Martin Foree Operating II, LLC | Royse City, TX 75189 | Oil & Gas Operator | Dec 2025 |
| 18334 | Martin Foree Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | Dec 2025 |
| 18335 | Martin Gas Sales, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | May 1993 |
| 18336 | Martin J S Oil O | | Oil & Gas Operator | Apr 1991 |
| 18337 | Martin John R | Cushing, OK 74023 | Oil & Gas Operator | Apr 1995 |
| 18338 | Martin Jr, James U | | Oil & Gas Operator | Aug 2025 |
| 18339 | Martin Larrey C | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 18340 | Martin Larry And/Or Sheila Dba Three Stooges Oil | Pawnee, OK 74058 | Oil Operator | Sep 2025 |
| 18341 | Martin Matrix Inc. | San Angelo, TX 76905 | Oil & Gas Operator | Dec 2025 |
| 18342 | Martin Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Aug 2025 |
| 18343 | Martin Oil & Gas Co. | | Oil Operator | Jul 1981 |
| 18344 | Martin Oil & Gas Inc. | Freer, TX 78357 | Oil & Gas Operator | Dec 2025 |
| 18345 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 18346 | Martin Oil LLC | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 18347 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 18348 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 18349 | Martin Oil Properties | | Oil Operator | Dec 2009 |
| 18350 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 18351 | Martin Phillips | | Oil Operator | Dec 1987 |
| 18352 | Martin Production Company | | Oil & Gas Operator | Dec 2024 |
| 18353 | Martin Production Corporation | Graham, TX 76450 | Oil Operator | Oct 2025 |
| 18354 | Martin Tank Truck & Casing Pulling Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2015 |
| 18355 | Martin Well Service | Graham, TX 76450 | Oil & Gas Operator | Jun 2015 |
| 18356 | Martin Well Service Company | Mineral Wells, TX 76067 | Oil & Gas Operator | Jul 2006 |
| 18357 | Martin'S Resources LLC | Woodward, OK 73801-5641 | Oil & Gas Operator | Sep 2025 |
| 18358 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 18359 | Martin, Dail D. | Madison, KS 66860 | Oil Operator | Dec 2019 |
| 18360 | Martin, Jimmy Inc | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2025 |
| 18361 | Martin, John I. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 18362 | Martin, Landis | Geneva, NY 14456 | Gas Operator | Dec 2024 |
| 18363 | Martin, Pat Jr. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2019 |
| 18364 | Martin, Philip H. | Ellis, KS 67637 | Oil Operator | Apr 2000 |
| 18365 | Martin, Tim | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2003 |
| 18366 | Martin, William C. | Houston, TX 77071 | Oil & Gas Operator | Dec 2025 |
| 18367 | Martin-Marks Operating Co. LLC | | Oil & Gas Operator | Dec 2010 |
| 18368 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 18369 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 18370 | Martino, Joseph C. | Pasadena, TX 77504 | Oil & Gas Operator | Dec 2025 |
| 18371 | Martis Valley Energy, LLC | Wichita Falls, TX 76310 | Oil Operator | Dec 2025 |
| 18372 | Marvel Joseph Shawn | Haskell, OK 74436 | Oil Operator | Sep 2025 |
| 18373 | Marvin L. Muslow | | Oil Operator | Jun 1995 |
| 18374 | Marvin Sanders Oil | Sugar Grove, PA 16350-5612 | Oil & Gas Operator | Dec 2016 |
| 18375 | Marwell Petroleum LTD Partnrship | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 18376 | Marwell Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2006 |
| 18377 | Mary E. Wertalla | | Oil Operator | Dec 1984 |
| 18378 | Marymac Company | Dallas, TX 75219-2362 | Oil & Gas Operator | Mar 2015 |
| 18379 | Marymac Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Sep 2001 |
| 18380 | Mas Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 18381 | Masa Energy LLC | Houston, TX 77094 | Oil & Gas Operator | Dec 2025 |
| 18382 | Masada Development Company | Lubbock, TX 79416 | Oil & Gas Operator | Nov 2021 |
| 18383 | Masada Oil & Gas | Quanah, TX 79252 | Oil & Gas Operator | Dec 2025 |
| 18384 | Masada Oil & Gas Company LTD. | Abilene, TX 79603 | Oil & Gas Operator | Dec 2025 |
| 18385 | Mascorella, Timothy James | Java Center, NY 14082 | Gas Operator | Dec 2024 |
| 18386 | Mascot Oil Company | Schulenburg, TX 78956 | Oil & Gas Operator | Dec 2025 |
| 18387 | Masek Oil Compan | | Oil Operator | Feb 1984 |
| 18388 | Mash Oilfield Services, LP | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 18389 | Masham Production Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2000 |
| 18390 | Mask Thomas B | | Oil & Gas Operator | Jul 1991 |
| 18391 | Mask Thomas B And Markel Ray D | | Oil & Gas Operator | Jul 1991 |
| 18392 | Mask Thomas B And Markel Ray D And Wood K P | | Oil & Gas Operator | Aug 1986 |
| 18393 | Mask Thomas B And Patrick Petroleum Corp | | Oil & Gas Operator | Jun 1992 |
| 18394 | Maskeny Edward D | | Oil & Gas Operator | Jun 1998 |
| 18395 | Mason Drilling Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2022 |
| 18396 | Mason John C | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1994 |
| 18397 | Mason Oil Company Inc | Nowata, OK 74048 | Oil Operator | Oct 2007 |
| 18398 | Mason Oil Inc | Blanchard, OK 73010-2903 | Oil & Gas Operator | Feb 2009 |
| 18399 | Mason Producing Inc | Millersburg, OH 44654-2696 | Oil & Gas Operator | Dec 2024 |
| 18400 | Mason Robert A | | Oil Operator | May 1993 |