| 20001 | Mirage Energy Inc | Eunice, NM 88231 | Oil & Gas Operator | Apr 2011 |
| 20002 | Miramar Petroleum, Inc. | Corpus Chrsti, TX 78463 | Oil & Gas Operator | Sep 2017 |
| 20003 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 20004 | Mirando Crude Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jul 1994 |
| 20005 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | Feb 2026 |
| 20006 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |
| 20007 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 20008 | Misc Oil Co | Oilmont, MT 59466 | Oil Operator | Dec 2025 |
| 20009 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 20010 | Mishler Oil | | Oil Operator | May 1989 |
| 20011 | Miss Basin Oil & Gas Company | | Oil Operator | Jan 1985 |
| 20012 | Miss Chub LLC | | Gas Operator | Dec 2024 |
| 20013 | Miss-Lou Oil Producers Inc | | Oil & Gas Operator | Dec 1998 |
| 20014 | Miss-Lou Operating LLC | | Oil & Gas Operator | Dec 2025 |
| 20015 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
| 20016 | Missala Inc | | Oil & Gas Operator | Dec 1995 |
| 20017 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2024 |
| 20018 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 20019 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 20020 | Mission Exploration, Inc. | Fate, TX 75132 | Oil & Gas Operator | Dec 1987 |
| 20021 | Mission Leasing LTD | Tulsa, OK 74136 | Oil Operator | Dec 2000 |
| 20022 | Mission Oil & Gas | Pawhuska, OK 74056 | Oil Operator | May 2013 |
| 20023 | Mission Oil Company | | Oil & Gas Operator | Nov 2025 |
| 20024 | Mission Resources | | Oil & Gas Operator | Dec 1991 |
| 20025 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 20026 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Feb 2026 |
| 20027 | Mississippi Resources, LLC Dba MSR Operating, LLC | | Oil & Gas Operator | May 2021 |
| 20028 | Mississippi River Transm. Corp | | Oil & Gas Operator | Sep 2002 |
| 20029 | Mississippi Valley Gas Co | | Oil & Gas Operator | Aug 1984 |
| 20030 | Mississippi Ventures | | Gas Operator | Feb 1992 |
| 20031 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 20032 | Missouri Basin Well Service, Inc. | Belfield, ND 58622 | Oil & Gas Operator | Jan 2018 |
| 20033 | Missouri Breaks, LLC | | Oil & Gas Operator | Jun 2011 |
| 20034 | Missouri River R | | Gas Operator | Jun 1993 |
| 20035 | Missouri River Resources ND, LLC | | Oil & Gas Operator | Dec 2025 |
| 20036 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | Dec 2025 |
| 20037 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 20038 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Feb 2026 |
| 20039 | Mitch Well Energy Inc | Waterford, PA 16441-8143 | Oil & Gas Operator | Dec 2012 |
| 20040 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 20041 | Mitchell Cecil D | Haskell, OK 74436-7667 | Oil & Gas Operator | Apr 2020 |
| 20042 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 20043 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 20044 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 20045 | Mitchell Energy & Goodrich Oil | | Oil & Gas Operator | Feb 1985 |
| 20046 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 20047 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 20048 | Mitchell James D | Bartlesville, OK 74006-7610 | Oil Operator | Nov 2025 |
| 20049 | Mitchell M J | | Oil & Gas Operator | Jan 1983 |
| 20050 | Mitchell Martha | Henryetta, OK 74437-0488 | Oil & Gas Operator | Apr 2011 |
| 20051 | Mitchell Oil | | Oil Operator | Nov 2025 |
| 20052 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 20053 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 20054 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 20055 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 20056 | Mitchell-Grossu Oil Co. | | Oil & Gas Operator | Sep 2023 |
| 20057 | Mitchwil Investments LLC | | Oil & Gas Operator | Dec 2019 |
| 20058 | Miti-Mini Inc | Wetumka, OK 74883-6172 | Gas Operator | Jul 2016 |
| 20059 | Mito Resources LLC | Edmond, OK 73013 | Oil & Gas Operator | Dec 2025 |
| 20060 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2026 |
| 20061 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 20062 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 20063 | Miura Petroleum Inc | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 20064 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 20065 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Feb 2026 |
| 20066 | Mize Energy Producers, LLC | | Oil & Gas Operator | Oct 2025 |
| 20067 | Mize Operations, LLC. | | Oil & Gas Operator | Dec 2018 |
| 20068 | MJ Energy Company, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 20069 | MJ Energy LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 20070 | MJ Energy, LLC Of Arkansas | | Oil Operator | Jan 2025 |
| 20071 | MJ Goetz Bonding, LLC | Bartlesville, OK 74006 | Oil Operator | Nov 2025 |
| 20072 | MJ Oil, Inc. | Houston, TX 77265 | Oil & Gas Operator | Feb 2026 |
| 20073 | MJB Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 20074 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Feb 2026 |
| 20075 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 20076 | MJM Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Dec 2025 |
| 20077 | MJT Oil | | Oil Operator | Sep 2025 |
| 20078 | MK Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2014 |
| 20079 | MK Operating Company LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Feb 2026 |
| 20080 | Mka Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Sep 1997 |
| 20081 | Mke Producing Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 2024 |
| 20082 | MKJ Oil Co LLC | Harper, KS 67058 | Oil & Gas Operator | Sep 2025 |
| 20083 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |
| 20084 | MKS Natural Gas Company | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2016 |
| 20085 | ML Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 20086 | MLB Operating Services, LLC | Tenn Colony, TX 75861 | Oil & Gas Operator | Feb 2026 |
| 20087 | MLB Properties Inc | Roaming Shores, OH 44085 | Oil & Gas Operator | Dec 2024 |
| 20088 | MLC Co., Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 1996 |
| 20089 | MLC Operating, LP | Houston, TX 77063 | Oil & Gas Operator | Feb 2026 |
| 20090 | MLC Resources LLC | Kingfisher, OK 73750-0364 | Oil & Gas Operator | Nov 2025 |
| 20091 | MLF, Inc. | Houston, TX 77096 | Gas Operator | Nov 2009 |
| 20092 | MLGW | | Gas Operator | Sep 1984 |
| 20093 | MLT Energy, LLC | Derby, KS 67037 | Oil Operator | Nov 2025 |
| 20094 | MLX Operating, Inc. | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 20095 | MM China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Feb 2026 |
| 20096 | MMD Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2000 |
| 20097 | MMG Oil Company | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2006 |
| 20098 | MMGL East Texas II, LLC | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 20099 | MMGL East Texas III, LLC | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 20100 | MMGL TXPH, LLC | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |