| 19001 | Mink, Jay, Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Aug 2017 |
| 19002 | Minnelusa Oil LLC | Temecula, CA 92589 | Oil Operator | Feb 2002 |
| 19003 | Minner Oil Field Service | | Oil Operator | Jul 2008 |
| 19004 | Minor Jr W T | Wichita Falls, TX 76307 | Oil Operator | Nov 1998 |
| 19005 | Minor Mark | FT Worth, TX 76116-1003 | Oil Operator | Nov 2015 |
| 19006 | Mint Mining LLC | Columbus, OH 43214 | Oil Operator | Dec 2025 |
| 19007 | Minteer & Baker Gas Enterprise | Kittanning, PA 16201-5022 | Gas Operator | Dec 2025 |
| 19008 | Minuja Oil And Gas LLC | Corpus Christi, TX 78401 | Oil & Gas Operator | Sep 1996 |
| 19009 | Minute Hand LLC | Brenham, TX 77834 | Oil & Gas Operator | Jul 2026 |
| 19010 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 19011 | Minyak Producing Company, Inc. | Sabine Pass, TX 77655 | Oil & Gas Operator | Jul 2026 |
| 19012 | Miocene Oil & Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jul 1998 |
| 19013 | Miocene Oil & Gas, LTD. | Englewood, CO 80110 | Oil & Gas Operator | Jul 2026 |
| 19014 | Mir-Tex Energy Corp. | Mirando City, TX 78369 | Oil & Gas Operator | Aug 2003 |
| 19015 | Miracle Petroleum LLC | | Oil & Gas Operator | Oct 2018 |
| 19016 | Miracle Production Inc | Yukon, OK 73085-0680 | Oil & Gas Operator | Jun 2007 |
| 19017 | Mirage Energy Inc | Eunice, NM 88231 | Oil & Gas Operator | Apr 2011 |
| 19018 | Miramar Petroleum, Inc. | Corpus Chrsti, TX 78463 | Oil & Gas Operator | Sep 2017 |
| 19019 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 19020 | Mirando Crude Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jul 1994 |
| 19021 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | Jul 2026 |
| 19022 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |
| 19023 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 19024 | Misc Oil Co | Oilmont, MT 59466 | Oil Operator | Apr 2026 |
| 19025 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 19026 | Mishler Oil | | Oil Operator | May 1989 |
| 19027 | Miss Basin Oil & Gas Company | | Oil Operator | Jan 1985 |
| 19028 | Miss Chub LLC | | Gas Operator | Dec 2024 |
| 19029 | Miss-Lou Oil Producers Inc | | Oil & Gas Operator | Dec 1998 |
| 19030 | Miss-Lou Operating, LLC | | Oil & Gas Operator | Apr 2026 |
| 19031 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
| 19032 | Missala Inc | | Oil & Gas Operator | Dec 1995 |
| 19033 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Apr 2026 |
| 19034 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2025 |
| 19035 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 19036 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2026 |
| 19037 | Mission Exploration, Inc. | Fate, TX 75132 | Oil & Gas Operator | Dec 1987 |
| 19038 | Mission Leasing LTD | Tulsa, OK 74136 | Oil Operator | Dec 2000 |
| 19039 | Mission Oil & Gas | Pawhuska, OK 74056 | Oil Operator | May 2013 |
| 19040 | Mission Oil Company | | Oil & Gas Operator | Apr 2026 |
| 19041 | Mission Resources | | Oil & Gas Operator | Dec 1991 |
| 19042 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 19043 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jul 2026 |
| 19044 | Mississippi Resources, LLC Dba MSR Operating, LLC | | Oil & Gas Operator | May 2021 |
| 19045 | Mississippi River Transm. Corp | | Oil & Gas Operator | Sep 2002 |
| 19046 | Mississippi Valley Gas Co | | Oil & Gas Operator | Aug 1984 |
| 19047 | Mississippi Ventures | | Gas Operator | Feb 1992 |
| 19048 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 19049 | Missouri Basin Well Service, Inc. | Belfield, ND 58622 | Oil & Gas Operator | Jan 2018 |
| 19050 | Missouri Breaks, LLC | | Oil & Gas Operator | Jun 2011 |
| 19051 | Missouri River R | | Gas Operator | Jun 1993 |
| 19052 | Missouri River Resources ND, LLC | | Oil & Gas Operator | May 2026 |
| 19053 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | May 2026 |
| 19054 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Jul 2026 |
| 19055 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Jul 2026 |
| 19056 | Mitch Well Energy Inc | Waterford, PA 16441-8143 | Oil & Gas Operator | Dec 2012 |
| 19057 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 19058 | Mitchell Cecil D | Haskell, OK 74436-7667 | Oil & Gas Operator | Apr 2020 |
| 19059 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19060 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2026 |
| 19061 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 19062 | Mitchell Energy & Goodrich Oil | | Oil & Gas Operator | Feb 1985 |
| 19063 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 19064 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 19065 | Mitchell James D | Bartlesville, OK 74006-7610 | Oil Operator | Apr 2026 |
| 19066 | Mitchell M J | | Oil & Gas Operator | Jan 1983 |
| 19067 | Mitchell Martha | Henryetta, OK 74437-0488 | Oil & Gas Operator | Apr 2011 |
| 19068 | Mitchell Oil | | Oil Operator | Dec 2025 |
| 19069 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19070 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 19071 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 19072 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 19073 | Mitchell-Grossu Oil Co. | | Oil & Gas Operator | Sep 2023 |
| 19074 | Mitchwil Investments LLC | | Oil & Gas Operator | Dec 2019 |
| 19075 | Miti-Mini Inc | Wetumka, OK 74883-6172 | Gas Operator | Jul 2016 |
| 19076 | Mito Resources LLC | Edmond, OK 73013 | Oil & Gas Operator | May 2026 |
| 19077 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2026 |
| 19078 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2026 |
| 19079 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 19080 | Miura Petroleum Inc | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 19081 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 19082 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Jul 2026 |
| 19083 | Mize Energy Producers, LLC | | Oil & Gas Operator | Jun 2026 |
| 19084 | Mize Operations, LLC. | | Oil & Gas Operator | Dec 2018 |
| 19085 | MJ Energy Company, LLC | Kilgore, TX 75663 | Oil Operator | Jul 2026 |
| 19086 | MJ Energy LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 19087 | MJ Energy, LLC Of Arkansas | | Oil Operator | Jan 2025 |
| 19088 | MJ Goetz Bonding, LLC | Bartlesville, OK 74006 | Oil Operator | Apr 2026 |
| 19089 | MJ Oil, Inc. | Houston, TX 77265 | Oil & Gas Operator | Jul 2026 |
| 19090 | MJB Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2026 |
| 19091 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Jul 2026 |
| 19092 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 19093 | MJM Resources Inc | Norman, OK 73072 | Oil & Gas Operator | May 2026 |
| 19094 | MJT Oil | | Oil Operator | Mar 2026 |
| 19095 | MK Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2014 |
| 19096 | MK Operating Company LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Jul 2026 |
| 19097 | Mke Producing Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 2025 |
| 19098 | MKJ Oil Co LLC | Harper, KS 67058 | Oil & Gas Operator | Mar 2026 |
| 19099 | MKM Services Inc | | Oil Operator | Jun 2026 |
| 19100 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |