| 18301 | Martex Oil & Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | May 2025 |
| 18302 | Martin & Richards Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 1995 |
| 18303 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 18304 | Martin Bros. Oil | Graham, TX 76450 | Oil & Gas Operator | Dec 1993 |
| 18305 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 18306 | Martin Cannon Interests, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 18307 | Martin Energy LLC | | Oil & Gas Operator | Apr 2023 |
| 18308 | Martin Exploration | Westminster, CO 80030 | Oil & Gas Operator | Dec 1993 |
| 18309 | Martin Exploration Co. | | Oil & Gas Operator | Apr 1986 |
| 18310 | Martin Foree Operating II, LLC | Royse City, TX 75189 | Oil & Gas Operator | May 2025 |
| 18311 | Martin Foree Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | May 2025 |
| 18312 | Martin Gas Sales, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | May 1993 |
| 18313 | Martin J S Oil O | | Oil & Gas Operator | Apr 1991 |
| 18314 | Martin John R | Cushing, OK 74023 | Oil & Gas Operator | Apr 1995 |
| 18315 | Martin Jr, James U | | Oil & Gas Operator | Feb 2025 |
| 18316 | Martin Larrey C | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 18317 | Martin Larry And/Or Sheila Dba Three Stooges Oil | Pawnee, OK 74058 | Oil Operator | Mar 2025 |
| 18318 | Martin Matrix Inc. | San Angelo, TX 76905 | Oil & Gas Operator | May 2025 |
| 18319 | Martin Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Feb 2025 |
| 18320 | Martin Oil & Gas Co. | | Oil Operator | Jul 1981 |
| 18321 | Martin Oil & Gas Inc. | Freer, TX 78357 | Oil & Gas Operator | May 2025 |
| 18322 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 18323 | Martin Oil LLC | Madison, KS 66860 | Oil Operator | Jan 2025 |
| 18324 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 18325 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 18326 | Martin Oil Properties | | Oil Operator | Dec 2009 |
| 18327 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 18328 | Martin Phillips | | Oil Operator | Dec 1987 |
| 18329 | Martin Production Company | | Oil & Gas Operator | Dec 2024 |
| 18330 | Martin Production Corporation | Graham, TX 76450 | Oil Operator | Mar 2025 |
| 18331 | Martin Tank Truck & Casing Pulling Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2015 |
| 18332 | Martin Well Service | Graham, TX 76450 | Oil & Gas Operator | Jun 2015 |
| 18333 | Martin Well Service Company | Mineral Wells, TX 76067 | Oil & Gas Operator | Jul 2006 |
| 18334 | Martin'S Resources LLC | Woodward, OK 73801-5641 | Oil & Gas Operator | Feb 2025 |
| 18335 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 18336 | Martin, Dail D. | Madison, KS 66860 | Oil Operator | Dec 2019 |
| 18337 | Martin, Jimmy Inc | San Angelo, TX 76904 | Oil & Gas Operator | May 2025 |
| 18338 | Martin, John I. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 18339 | Martin, Landis | Geneva, NY 14456 | Gas Operator | Dec 2023 |
| 18340 | Martin, Pat Jr. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2019 |
| 18341 | Martin, Philip H. | Ellis, KS 67637 | Oil Operator | Apr 2000 |
| 18342 | Martin, Tim | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2003 |
| 18343 | Martin, William C. | Houston, TX 77071 | Oil & Gas Operator | May 2025 |
| 18344 | Martin-Marks Operating Co. LLC | | Oil & Gas Operator | Dec 2010 |
| 18345 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 18346 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 18347 | Martino, Joseph C. | Pasadena, TX 77504 | Oil & Gas Operator | May 2025 |
| 18348 | Martis Valley Energy, LLC | Wichita Falls, TX 76310 | Oil Operator | May 2025 |
| 18349 | Marvel Joseph Shawn | Haskell, OK 74436 | Oil Operator | Feb 2025 |
| 18350 | Marvin L. Muslow | | Oil Operator | Jun 1995 |
| 18351 | Marvin Sanders Oil | Sugar Grove, PA 16350-5612 | Oil & Gas Operator | Dec 2016 |
| 18352 | Marwell Petroleum LTD Partnrship | Houston, TX 77027 | Oil & Gas Operator | May 2025 |
| 18353 | Marwell Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2006 |
| 18354 | Mary E. Wertalla | | Oil Operator | Dec 1984 |
| 18355 | Marymac Company | Dallas, TX 75219-2362 | Oil & Gas Operator | Mar 2015 |
| 18356 | Marymac Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Sep 2001 |
| 18357 | Mas Operating Co. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 18358 | Masa Energy LLC | Houston, TX 77094 | Oil & Gas Operator | May 2025 |
| 18359 | Masada Development Company | Lubbock, TX 79416 | Oil & Gas Operator | Nov 2021 |
| 18360 | Masada Oil & Gas | Quanah, TX 79252 | Oil & Gas Operator | May 2025 |
| 18361 | Masada Oil & Gas Company LTD. | Abilene, TX 79603 | Oil & Gas Operator | May 2025 |
| 18362 | Mascorella, Timothy James | Java Center, NY 14082 | Gas Operator | Dec 2023 |
| 18363 | Mascot Oil Company | Schulenburg, TX 78956 | Oil & Gas Operator | May 2025 |
| 18364 | Masek Oil Compan | | Oil Operator | Feb 1984 |
| 18365 | Mash Oilfield Services, LP | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 18366 | Masham Production Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2000 |
| 18367 | Mask Thomas B | | Oil & Gas Operator | Jul 1991 |
| 18368 | Mask Thomas B And Markel Ray D | | Oil & Gas Operator | Jul 1991 |
| 18369 | Mask Thomas B And Markel Ray D And Wood K P | | Oil & Gas Operator | Aug 1986 |
| 18370 | Mask Thomas B And Patrick Petroleum Corp | | Oil & Gas Operator | Jun 1992 |
| 18371 | Maskeny Edward D | | Oil & Gas Operator | Jun 1998 |
| 18372 | Mason Drilling Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2022 |
| 18373 | Mason John C | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1994 |
| 18374 | Mason Oil Company Inc | Nowata, OK 74048 | Oil Operator | Oct 2007 |
| 18375 | Mason Oil Inc | Blanchard, OK 73010-2903 | Oil & Gas Operator | Feb 2009 |
| 18376 | Mason Producing Inc | Millersburg, OH 44654-2696 | Oil & Gas Operator | Dec 2024 |
| 18377 | Mason Robert A | | Oil Operator | May 1993 |
| 18378 | Mason Robert A Production Co | Edmond, OK 73013-9102 | Oil & Gas Operator | May 2013 |
| 18379 | Mason, Harold J. | Waterville, NY 13480 | Gas Operator | Dec 2023 |
| 18380 | Mason, Tommy L | | Oil & Gas Operator | May 2013 |
| 18381 | Mason-Phillips Properties Of Florida | Ville Beach, FL 32250 | Oil Operator | Apr 1999 |
| 18382 | Mass Energy, Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 18383 | Mass Resources, Inc. | | Oil Operator | Jan 2025 |
| 18384 | Massad George H Estate | Holdenville, OK 74848 | Oil & Gas Operator | Dec 2014 |
| 18385 | Massad John M | Holdenville, OK 74848-2629 | Oil & Gas Operator | Oct 2017 |
| 18386 | Massad Oil Company | Holdenville, OK 74848-2629 | Oil Operator | Mar 2025 |
| 18387 | Massey Group, Inc. | | Oil & Gas Operator | Dec 2004 |
| 18388 | Massey, Gary R. | Eureka, KS 67045 | Oil Operator | Jan 2025 |
| 18389 | Massie Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 18390 | Massie, Everett J | Philpot, KY 42366 | Oil Operator | Dec 2023 |
| 18391 | Massingill & McCutchin | Lubbock, TX 79424 | Oil & Gas Operator | Aug 2003 |
| 18392 | Mastel, Francis E. | Rantoul, KS 66079 | Oil Operator | Oct 2009 |
| 18393 | Master Pet & Devel Co Inc | Grand Junction, CO 81503 | Oil & Gas Operator | Jul 1999 |
| 18394 | Master Well Works, Inc. | | Oil Operator | Dec 2024 |
| 18395 | Masters Dorothy V | Davis, OK 73030-0397 | Oil & Gas Operator | May 2020 |
| 18396 | Masters Loy C | Davis, OK 73030-0397 | Oil & Gas Operator | Apr 2005 |
| 18397 | Masters Oil & Gas, LLC | Houston, TX 77079 | Oil & Gas Operator | May 2025 |
| 18398 | Masters Rat Hole Service, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 18399 | Masters Resources, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Dec 2008 |
| 18400 | Mastodon Operating Company, LLC | Houston, TX 77027 | Oil & Gas Operator | May 2025 |