| 7501 | Munson, Charles C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2002 |
| 7502 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 7503 | Munson, David M. Inc. | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 7504 | Munson, E. P., Jr. | Fort Worth, TX 76121 | Oil & Gas Operator | Oct 1995 |
| 7505 | Muras Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Aug 2025 |
| 7506 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Aug 2020 |
| 7507 | Murchison Oil And Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Feb 2025 |
| 7508 | Murchison, G. B. Trust | Dallas, TX 75283 | Oil & Gas Operator | Sep 1994 |
| 7509 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | Oct 2025 |
| 7510 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2025 |
| 7511 | Muroz International Group Inc | Houston, TX 77056 | Oil Operator | Dec 2025 |
| 7512 | Murphree Brothers Production | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 7513 | Murphree Production | Monahans, TX 79756 | Oil & Gas Operator | Jul 2014 |
| 7514 | Murphy & Associates, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Oct 1996 |
| 7515 | Murphy Energy Services, LP | Saratoga, TX 77585 | Oil Operator | Dec 2018 |
| 7516 | Murphy Expl. & Prod. Co. - USA | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 7517 | Murphy Exploration & Prod. Co. | Houston, TX 77094 | Oil & Gas Operator | Jun 2011 |
| 7518 | Murphy Exploration & Production | Houston, TX 77024 | Oil Operator | Jan 2025 |
| 7519 | Murphy Oil USA, Inc. | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 7520 | Murphy Production Corp. | Austin, TX 78731 | Oil & Gas Operator | Sep 2013 |
| 7521 | Murphy, Bill W. Operating Co,Inc | Richardson, TX 75080 | Oil & Gas Operator | Dec 2025 |
| 7522 | Murphy, K. P. Oil Operator | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 7523 | Murray, Tom Enterprises | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 7524 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Dec 2025 |
| 7525 | Musselman, Owen & King Oper.,Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 7526 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Aug 2024 |
| 7527 | Mustang Drilling, LTD. | Henderson, TX 75653 | Oil & Gas Operator | May 2008 |
| 7528 | Mustang Energy Inc. | Porter, TX 77365 | Oil & Gas Operator | Mar 2008 |
| 7529 | Mustang Fuel Corp. Of Oklahoma | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2016 |
| 7530 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2025 |
| 7531 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 7532 | Mustang Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2006 |
| 7533 | MV Purchasing LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 7534 | MV2 Energy, Inc. | Houston, TX 77069 | Oil & Gas Operator | Dec 2025 |
| 7535 | MW Petroleum Corporation | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 7536 | MWJ Producing Company | Midland, TX 79701 | Oil & Gas Operator | Jul 1998 |
| 7537 | MWL Energy LLC | Hamlin, TX 79520 | Oil Operator | Dec 2025 |
| 7538 | MWS Producing, Inc. | Stanton, TX 79782 | Oil & Gas Operator | Dec 2025 |
| 7539 | MWWD Operator, LLC | Victoria, TX 77904 | Oil Operator | Dec 2025 |
| 7540 | My Hop Mineral | Moorhead, MN 56560 | Oil & Gas Operator | Dec 2025 |
| 7541 | Myco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2003 |
| 7542 | Myco Industries, Inc. | Artesia, NM 88211 | Oil & Gas Operator | Feb 2015 |
| 7543 | Myco Petroleum | Lovington, NM 88260 | Oil & Gas Operator | Dec 2025 |
| 7544 | Myd, Inc. | Irving, TX 75062 | Oil & Gas Operator | Mar 1998 |
| 7545 | Myers, A. J. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 7546 | Myers, James B. | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 7547 | Myriad Resources Corporation | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 7548 | Myung And Associates, Inc. | Houston, TX 77056 | Oil & Gas Operator | May 2000 |
| 7549 | MZ Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 1994 |
| 7550 | N & B Oil And Gas LLC | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 7551 | N & O Oil Co. | Imperial, TX 79743 | Oil & Gas Operator | Dec 2025 |
| 7552 | N C B Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 7553 | N S P Operating Group LLC | El Campo, TX 77437 | Oil & Gas Operator | Aug 2021 |
| 7554 | N. A. Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2007 |
| 7555 | N. E. Operating Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2013 |
| 7556 | Nabers, Lynn | Austin, TX 78751 | Gas Operator | Jul 2010 |
| 7557 | Nabob Production Company | Amarillo, TX 79105 | Gas Operator | Dec 1991 |
| 7558 | Naco Production | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 7559 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | Dec 2025 |
| 7560 | Nadcf Recovery Group, Inc. | Chapin, SC 29036 | Oil & Gas Operator | Dec 2025 |
| 7561 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 7562 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 7563 | Nadel And Gussman Permian,L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 7564 | Nadsoilco LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Dec 2025 |
| 7565 | Naifco Oil & Gas LLC | Oklahoma City, OK 73107 | Oil & Gas Operator | Sep 2025 |
| 7566 | Nails Operating Company LLC | Hondo, TX 78861 | Oil Operator | Dec 2025 |
| 7567 | Nall Oil & Gas | Mineral Wells, TX 76067 | Oil & Gas Operator | Dec 2025 |
| 7568 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 7569 | Narbo Farms, LTD. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 7570 | Nasser Oil & Gas, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 1998 |
| 7571 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 7572 | National Investors Group | Warren, OH 44481 | Oil & Gas Operator | Nov 1996 |
| 7573 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 7574 | National Onshore LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 7575 | National Surface & Minerals, LLC | Addison, TX 75001 | Gas Operator | Jan 2023 |
| 7576 | Natural Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 1997 |
| 7577 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Dec 2025 |
| 7578 | Natural Gas Anadarko Inc | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 7579 | Natural Gas MKTG. & Storage Co. | Houston, TX 77251 | Oil & Gas Operator | Sep 1996 |
| 7580 | Natural Gas Pipeline Co Of Amer. | Houston, TX 77002 | Gas Operator | Jul 2008 |
| 7581 | Natural Petroleum Company | Overton, TX 75684 | Oil & Gas Operator | Jun 1994 |
| 7582 | Natural Reserves Group, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1993 |
| 7583 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | Dec 2025 |
| 7584 | Nautilus Exploration, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 2021 |
| 7585 | Navajo Exploration, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Dec 2025 |
| 7586 | Navalo | Rockdale, TX 76567 | Oil Operator | Dec 2025 |
| 7587 | Navarro Exploration Co., Inc. | Kingwood, TX 77345 | Oil & Gas Operator | Dec 2025 |
| 7588 | Navarro Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 7589 | Navidad Operating Company, LLC | Flint, TX 75762 | Oil & Gas Operator | Jan 2025 |
| 7590 | Navidad Resources, LLC | Bullard, TX 75757 | Oil & Gas Operator | Dec 2025 |
| 7591 | Navus Operating, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 7592 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Dec 2025 |
| 7593 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 7594 | NBX Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 7595 | Ncec, Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | May 1994 |
| 7596 | Ncey Holdings, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2013 |
| 7597 | Neal, Jack Engineering, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2011 |
| 7598 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Dec 2025 |
| 7599 | Neas Operating | Pampa, TX 79065 | Oil & Gas Operator | Oct 2011 |
| 7600 | Neas Operating, LLC | Wimberley, TX 78676 | Oil & Gas Operator | Dec 2025 |