| 17401 | M H W, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Jul 1996 |
| 17402 | M IV Ops., Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1998 |
| 17403 | M J M D Inc | Burlington, IA 52601 | Oil Operator | Jan 2013 |
| 17404 | M K M LTD | | Oil & Gas Operator | Jun 1998 |
| 17405 | M K M Oil Company | Casper, WY 82602 | Oil & Gas Operator | Jun 1996 |
| 17406 | M K W Inc | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Dec 2009 |
| 17407 | M L Energy | | Oil Operator | Feb 2015 |
| 17408 | M L Energy LLC | | Oil Operator | Apr 2026 |
| 17409 | M L Mayfield Petroleum Corp. | | Oil & Gas Operator | Aug 1991 |
| 17410 | M M Energy Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Apr 2026 |
| 17411 | M M Resources In | | Gas Operator | Feb 1990 |
| 17412 | M P O'Meara, Jr. Inc. | | Oil & Gas Operator | Sep 2000 |
| 17413 | M R Drilling Company | Monahans, TX 79756 | Oil & Gas Operator | Feb 1998 |
| 17414 | M R Schalk | Albuquerque, NM 87125 | Oil & Gas Operator | Jul 2022 |
| 17415 | M R Ventures LLC | Dallas, TX 75367 | Oil & Gas Operator | Apr 2026 |
| 17416 | M S B Company | Slaton, TX 79364 | Oil & Gas Operator | Dec 2016 |
| 17417 | M S Drilling Company | | Oil Operator | Mar 2026 |
| 17418 | M S Exploration Inc | Lexington, OH 44904-9510 | Oil & Gas Operator | Dec 1999 |
| 17419 | M T M Oil | Monahans, TX 79756 | Oil & Gas Operator | Jul 2026 |
| 17420 | M T W Oil Co | Terral, OK 73569 | Oil Operator | Jun 2014 |
| 17421 | M V Crum Gas Partners | Paintsville, KY 41240 | Gas Operator | Dec 2021 |
| 17422 | M V Production Co | | Oil & Gas Operator | Jun 1990 |
| 17423 | M V Ventures, G. P. | | Oil & Gas Operator | Dec 2000 |
| 17424 | M W Petroleum Company | Houston, TX 77056 | Oil & Gas Operator | Dec 1995 |
| 17425 | M W Production Co. | New Braunfels, TX 78130 | Oil & Gas Operator | Aug 2003 |
| 17426 | M&D Energy LLC | Moore, OK 73160 | Oil Operator | Apr 2026 |
| 17427 | M&M Energy, LLC | El Paso, TX 79902 | Oil Operator | Dec 2020 |
| 17428 | M&M Oil, LLC | Artesia, NM 86210 | Oil & Gas Operator | Apr 2026 |
| 17429 | M'Red Petroleum, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2010 |
| 17430 | M-2 Oil Company | Wichita Falls, TX 76306 | Oil & Gas Operator | May 2006 |
| 17431 | M-3 Industries | Casper, WY 82602 | Oil & Gas Operator | Mar 2026 |
| 17432 | M-B Operating Co., Inc. | Rowlett, TX 75030 | Oil & Gas Operator | Jul 2026 |
| 17433 | M-B SWD Inc | Crescent, OK 73028-0533 | Oil Operator | Jul 1997 |
| 17434 | M-C Production & Drilling Co,Inc | Longview, TX 75608 | Oil & Gas Operator | Jul 2026 |
| 17435 | M-Five Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Apr 2002 |
| 17436 | M-G Gas Company, Inc. | Plano, TX 75086 | Oil & Gas Operator | Jun 1999 |
| 17437 | M-J Oil Company Inc. | Minerva, OH 44657 | Oil & Gas Operator | Dec 2008 |
| 17438 | M-P Petroleum Inc | McPherson, KS 67460 | Oil & Gas Operator | Jan 2013 |
| 17439 | M-S-C Corporation | Houston, TX 77027 | Oil Operator | May 1994 |
| 17440 | M-T Petroleum, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Mar 2008 |
| 17441 | M-Tex Oil, LLC | Williston, ND 58803 | Oil Operator | Apr 2026 |
| 17442 | M-Tex Resources, Inc. | Merkel, TX 79536 | Oil & Gas Operator | Jul 2026 |
| 17443 | M-V Company | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 17444 | M-W-D Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jul 1999 |
| 17445 | M. A. B. Production | | Oil Operator | Nov 2009 |
| 17446 | M. A. Robison | | Oil & Gas Operator | Oct 1998 |
| 17447 | M. B. And D. I. Dupree | | Oil Operator | Nov 1992 |
| 17448 | M. D. & G. Partnership | | Oil & Gas Operator | Dec 1996 |
| 17449 | M. E. Fitzgerald | | Oil & Gas Operator | May 1993 |
| 17450 | M. E. Operating & Services, Inc. | Fort Worth, TX 76104 | Oil & Gas Operator | Jul 2026 |
| 17451 | M. F. McCain, Inc. | | Oil & Gas Operator | Jul 1987 |
| 17452 | M. Grace, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Jul 2026 |
| 17453 | M. H. Whittier Energy LLC | | Oil & Gas Operator | Sep 1996 |
| 17454 | M. H.Marr | | Oil & Gas Operator | Mar 1998 |
| 17455 | M. J. G., Inc. | Alice, TX 78333 | Oil & Gas Operator | Jul 2010 |
| 17456 | M. J. McCaffery Oil Co. | Allegany, NY 14706 | Oil Operator | Dec 2017 |
| 17457 | M. J. T. Enterprises | | Oil Operator | Mar 2026 |
| 17458 | M. K. Fuhrman LLC | | Oil Operator | Mar 2026 |
| 17459 | M. K. Production | Caldwell, TX 77836 | Oil & Gas Operator | Mar 2008 |
| 17460 | M. L. Mayfield | | Oil & Gas Operator | Oct 1990 |
| 17461 | M. L. Mayfield Co. | | Oil & Gas Operator | Aug 1991 |
| 17462 | M. M. & M. Resources, Inc. | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2020 |
| 17463 | M. P. O'Meara Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 17464 | M. P. S. Prod. Co. | Houston, TX 77225 | Oil & Gas Operator | Dec 1996 |
| 17465 | M. Parker Production Co. | | Oil Operator | Dec 2024 |
| 17466 | M. S. Delone | | Oil Operator | Nov 1990 |
| 17467 | M. S. Productions, Inc. | Pittsburg, KS 66762 | Oil & Gas Operator | Nov 2019 |
| 17468 | M. T. R. Production | | Oil Operator | Mar 2006 |
| 17469 | M. W. Maxwell | | Oil & Gas Operator | Apr 1990 |
| 17470 | M.A. Yost Operations, Inc | Russell, KS 67665 | Oil Operator | Mar 2026 |
| 17471 | M.A.E. Resources, Inc. | Parker, KS 66072 | Oil Operator | Sep 2011 |
| 17472 | M.A.R.S. Energy | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 17473 | M.B. Properties, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Oct 1995 |
| 17474 | M.B.J. Operating | Argyle, TX 76226 | Oil & Gas Operator | Jun 2022 |
| 17475 | M.C.E. Trust Group, A General Partnership | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2009 |
| 17476 | M.D. Skroopka Operating, LLC | Oakland, CA 94611 | Oil & Gas Operator | Jul 2026 |
| 17477 | M.J.O.G., Inc. | Fort Smith, AR 72903 | Oil Operator | Mar 2015 |
| 17478 | M.O.K.A.T. | Bartlesville, OK 74003 | Oil Operator | Jun 2001 |
| 17479 | M.R.M. Operating, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 2003 |
| 17480 | M.T.M. Petroleum | | Oil & Gas Operator | Oct 1995 |
| 17481 | M2 Louisiana Gas Service, LLC | | Oil Operator | Apr 2010 |
| 17482 | M2 Squared Operating, LLC | Rockwall, TX 75032 | Oil Operator | Jul 2026 |
| 17483 | M2S Oil LLC | | Oil Operator | Apr 2026 |
| 17484 | M3 Helium Corp | | Gas Operator | Mar 2026 |
| 17485 | M3V Energy, LLC | Perryton, TX 79070 | Oil & Gas Operator | Jul 2026 |
| 17486 | M4 Energy, LLC | | Oil & Gas Operator | Dec 2025 |
| 17487 | M5oexit, LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2026 |
| 17488 | M7 Resources LLC | Roswell, NM 88201 | Oil Operator | May 2026 |
| 17489 | Ma-Si, Inc. | | Oil & Gas Operator | May 1998 |
| 17490 | Mac 5 Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2021 |
| 17491 | Mac Engineering & Operating Co | | Oil & Gas Operator | May 2005 |
| 17492 | Mac Oil Field Service Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2025 |
| 17493 | Mac Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2023 |
| 17494 | Macdonald, Reggie And Janyth | Stafford, NY 14143 | Gas Operator | Dec 2025 |
| 17495 | Mace, T. A. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2008 |
| 17496 | Macfarlan Oil And Gas, LLC | Ellenboro, WV 26346-0058 | Oil & Gas Operator | Dec 2021 |
| 17497 | Mach Petroleum, Inc. | Tulsa, OK 74153 | Oil & Gas Operator | Nov 2014 |
| 17498 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Jul 2026 |
| 17499 | Machii-Ross Petroleum Co | | Oil & Gas Operator | Apr 2014 |
| 17500 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2026 |