| 19601 | Mesa Petroleum C | | Oil & Gas Operator | Dec 1986 |
| 19602 | Mesa Petroleum Co. | | Oil & Gas Operator | Aug 1985 |
| 19603 | Mesa Production Company | Amarillo, TX 79189 | Oil & Gas Operator | Dec 1983 |
| 19604 | Mesa Ridge Holdings LLC | Abilene, TX 79603 | Oil Operator | Feb 2026 |
| 19605 | Mesa VIsta Operating, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 19606 | Mescalero Energy, Inc. | San Antonio, TX 78231 | Oil & Gas Operator | Aug 2003 |
| 19607 | Mescko Operating & Prod | Seville, OH 44273 | Oil & Gas Operator | Dec 2025 |
| 19608 | Mescko Producing & Operating Co. Inc. | Burbank, OH 44214 | Oil & Gas Operator | Dec 2024 |
| 19609 | Mesh LTD | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 19610 | Mesquite Land & Minerals Co. | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 19611 | Mesquite Oil & Gas Production | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 19612 | Mesquite SWD Inc | Carlsbad, NM 88221 | Oil & Gas Operator | Feb 2026 |
| 19613 | Messenger Petroleum, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Sep 2025 |
| 19614 | Messer Helium Cliffside LLC | Bridgewater, NJ 08807 | Gas Operator | Feb 2026 |
| 19615 | Messer LLC | | Gas Operator | Dec 2025 |
| 19616 | Messman Corporation | Wichita, KS 67208 | Oil & Gas Operator | Sep 2025 |
| 19617 | Messman-Rinehart | | Oil & Gas Operator | Mar 1991 |
| 19618 | Messy Oil And Gas, LLC | Garwood, TX 77442 | Oil & Gas Operator | Feb 2026 |
| 19619 | Mestena Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 2015 |
| 19620 | Mestena Operating, LTD. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jun 2009 |
| 19621 | Mestena, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Nov 2001 |
| 19622 | Metairie Energy Company, Inc. | | Oil & Gas Operator | Nov 2019 |
| 19623 | Metano Energy III, LP | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 19624 | Metano Energy, LP | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2008 |
| 19625 | Metcalf John C Dba Metcalf Dri | Glouster, OH 45732 | Oil & Gas Operator | Dec 2006 |
| 19626 | Metco Oil Corporation | Seguin, TX 78155 | Oil Operator | Apr 2016 |
| 19627 | Meteor Developments Inc | Denver, CO BAD ADDR | Oil & Gas Operator | Dec 1995 |
| 19628 | Meter, Erin L. & William J. | Dansville, NY 14437 | Gas Operator | Dec 2024 |
| 19629 | Metgas Co, A Partnership | | Oil & Gas Operator | Dec 2016 |
| 19630 | Methane Productions Inc | Recluse, WY 82725 | Oil & Gas Operator | Apr 2007 |
| 19631 | Metis Energy LLC | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 19632 | Metro Energy Group, Inc. | Bossier City, LA 71112 | Oil & Gas Operator | May 2013 |
| 19633 | Metro Energy LTD | Scottsdale, AZ 85254 | Oil Operator | Aug 2000 |
| 19634 | Metro Energy, Inc. | Gladstone, MO 64118 | Oil Operator | May 1997 |
| 19635 | Metro Oil Compan | | Oil Operator | Jan 1991 |
| 19636 | Metroplex Barnett Shale LLC | Houston, TX 77001 | Gas Operator | Sep 2008 |
| 19637 | Metropolitan Resources Corp | Tulsa, OK 74169-1734 | Oil & Gas Operator | Mar 2015 |
| 19638 | Mettz,Carmody & Foster Oil Co | | Oil Operator | May 1990 |
| 19639 | Metzger Ed W & Sue | Junction City, OH 43748 | Oil Operator | Dec 2024 |
| 19640 | Metzger Francis A | Junction City, OH 43748 | Oil & Gas Operator | Dec 1999 |
| 19641 | Metzgers Bob | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 19642 | Metzner, Norma J. Estate | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1998 |
| 19643 | Mewbourne Marketing, Inc. | | Oil & Gas Operator | Mar 2013 |
| 19644 | Mewbourne Oil Company | Tyler, TX 75711 | Oil & Gas Operator | Feb 2026 |
| 19645 | Mexco Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 19646 | Mextex Operating Company | Austin, TX 78734 | Oil & Gas Operator | Feb 2026 |
| 19647 | Meyer Douglas P | Longmont, CO 80501 | Oil & Gas Operator | Aug 2006 |
| 19648 | Meyer Doyle | Marshall, OK 73056 | Oil & Gas Operator | May 2006 |
| 19649 | Meyer Oil Co., Inc. | Skellytown, TX 79080 | Oil & Gas Operator | Nov 2025 |
| 19650 | Meyer Richard C Inc | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 1999 |
| 19651 | Meyer, David M. | South Wales, NY 14139 | Gas Operator | Dec 2024 |
| 19652 | Meyer, Norbert | Conway Springs, KS 67031 | Oil Operator | Aug 1994 |
| 19653 | Meyer, Ruskin H. Et Al | | Oil Operator | Oct 1980 |
| 19654 | Meyer, Theodore J. | Conway Springs, KS 67031 | Oil Operator | Sep 2025 |
| 19655 | Meyerhoff & Cox Inc | Tulsa, OK 74135-7830 | Oil Operator | Aug 1993 |
| 19656 | Meyers Marsha L | Danville, OH 43014 | Oil & Gas Operator | Dec 2007 |
| 19657 | Meyers-Lasher, Inc. | | Oil & Gas Operator | Mar 1999 |
| 19658 | MFC Drilling Inc | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2024 |
| 19659 | MFP Petroleum LP | Oklahoma City, OK 73142-3017 | Gas Operator | Nov 2025 |
| 19660 | MFP Petroleum LTD. Partnership | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2017 |
| 19661 | Mga Energy Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |
| 19662 | MGD Oil Production LLC | Healdton, OK 73438-6219 | Oil Operator | Nov 2025 |
| 19663 | Mge Resources, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Nov 2025 |
| 19664 | MGF Oil Corporation | Tulsa, OK 74121 | Oil & Gas Operator | Jun 1998 |
| 19665 | MGM Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 19666 | MGM Oil & Gas Inc. | Ballinger, TX 76821 | Oil & Gas Operator | Feb 2026 |
| 19667 | MGM Well Service, Inc. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Oct 2004 |
| 19668 | MGR Resources | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2026 |
| 19669 | MH Oilfield Service LLC | Amesville, OH 45711 | Oil & Gas Operator | Dec 2023 |
| 19670 | MHM Oil Co. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2002 |
| 19671 | MHM Pipeline Co., Inc. | Dallas, TX 75252 | Oil & Gas Operator | Feb 2026 |
| 19672 | MHW Energy LTD | Farmington, NM 87499 | Gas Operator | Mar 1995 |
| 19673 | Mi-Co Oil & Gas LLC | Caddo, TX 76429 | Oil Operator | Feb 2026 |
| 19674 | Mi3 Energy LLC | | Oil & Gas Operator | Dec 2025 |
| 19675 | Miami Oil Producers Inc | Reno, NV 89501 | Oil & Gas Operator | Dec 2012 |
| 19676 | Mica Energy Corp | Lincoln, NE 68516 | Oil & Gas Operator | Dec 2010 |
| 19677 | Mich Geosearch/Eagle O&G | Wichita Falls, TX 76308-1061 | Oil & Gas Operator | Dec 2001 |
| 19678 | Mich-La Oil & Gas Exploration | | Oil & Gas Operator | Jan 1992 |
| 19679 | Michael D Brown | | Oil Operator | Jul 1993 |
| 19680 | Michael D. Traylor LLC | El Dorado, KS 67042 | Oil Operator | Sep 2025 |
| 19681 | Michael D. Weilert Oil Company | | Oil Operator | Sep 2025 |
| 19682 | Michael Goodnight Operating LLC | St Louis, OK 74866 | Oil & Gas Operator | Nov 2025 |
| 19683 | Michael Petr. & Hurd Ent., LTD. | Houston, TX 77056 | Oil & Gas Operator | Oct 1993 |
| 19684 | Michael Petroleum Corporation | Houston, TX 77040 | Oil & Gas Operator | Dec 2001 |
| 19685 | Michael Pierce | Albuquerque, NM 87191655 | Gas Operator | Mar 2022 |
| 19686 | Michael W Mills | | Oil Operator | Jul 2007 |
| 19687 | Michaelis Leo Oi | | Oil Operator | Aug 1991 |
| 19688 | Michaelson Producing Company | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2026 |
| 19689 | Michel T. Halbouty | | Oil & Gas Operator | Dec 1996 |
| 19690 | Michel T. Halbouty Energy Co. | | Oil & Gas Operator | Nov 1986 |
| 19691 | Michigan Gas Utilities Co | | Oil Operator | Mar 2011 |
| 19692 | Michigan Geosearch Inc | Lansing, MI 48917 | Oil & Gas Operator | Dec 2016 |
| 19693 | Michigan Oil Company | FT Worth, TX 76117 | Oil & Gas Operator | Feb 1998 |
| 19694 | Michigan Petroleum Exploration Inc | | Oil Operator | Oct 2005 |
| 19695 | Michigan Production Co LLC | | Oil Operator | Oct 2002 |
| 19696 | Michigan-Wisconsin Pipe Line Co | | Oil & Gas Operator | Dec 1983 |
| 19697 | Michiwest Energy Inc | MT.Pleasant, MI 48858 | Gas Operator | Nov 2000 |
| 19698 | Mickalson Operating Company | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2025 |
| 19699 | Mico Oil & Gas | Paola, KS 66071 | Oil Operator | Aug 1995 |
| 19700 | Micoa, Inc | | Oil & Gas Operator | Dec 2008 |