| 19001 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 19002 | Mo-Ky | | Oil Operator | Dec 1982 |
| 19003 | Moabb Oil Corp | | Oil & Gas Operator | Apr 1998 |
| 19004 | Mob Corp | Waynesburg, PA 15370-2036 | Gas Operator | Dec 2007 |
| 19005 | Mobay Storage Hub LLC | | Gas Operator | Oct 2008 |
| 19006 | Mobeetie Resource Dev LLC | Perryton, TX 79070 | Oil & Gas Operator | Jun 2026 |
| 19007 | Mobil E&P N.A.-Pel-Tex | | Oil & Gas Operator | Dec 1993 |
| 19008 | Mobil E&P N.A.-WM Scully Et Al | | Oil & Gas Operator | Dec 1993 |
| 19009 | Mobil E&P North America Inc. | | Oil & Gas Operator | Jan 1994 |
| 19010 | Mobil Exp & Prod Us Inc | Houston, TX 77060-1991 | Oil & Gas Operator | May 2001 |
| 19011 | Mobil Expl & Producing North America Inc | | Oil & Gas Operator | Nov 1986 |
| 19012 | Mobil Explor & Prod | Cortez, CO 81321 | Oil & Gas Operator | May 2001 |
| 19013 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 19014 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2007 |
| 19015 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
| 19016 | Mobil Oil E&P Se Inc - Pel-Tex | | Oil & Gas Operator | Dec 2005 |
| 19017 | Mobil Oil Expl & Prod S E | | Oil & Gas Operator | Dec 1979 |
| 19018 | Mobil Oil Exploration & Producing Southeast, Inc. | | Oil & Gas Operator | Mar 2026 |
| 19019 | Mobil Oil Exploration & Production North America Inc. | | Oil & Gas Operator | Dec 1996 |
| 19020 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | Jun 2026 |
| 19021 | Mobil Producing Texas & New Mexico | Denver City, TX 79323 | Oil & Gas Operator | Jun 2005 |
| 19022 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 19023 | Mobile Gulf, Inc. | | Oil & Gas Operator | Aug 1985 |
| 19024 | Mobile Petrovac, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2026 |
| 19025 | Mobile Production Systems, Inc. | Austin, TX 78711 | Oil & Gas Operator | Feb 1995 |
| 19026 | Mobley & Davis | | Oil & Gas Operator | Oct 1986 |
| 19027 | Mobley & McCain | | Oil & Gas Operator | Nov 1979 |
| 19028 | Mobley & McCain, Et Al | | Oil & Gas Operator | Jul 1986 |
| 19029 | Mobley Oil Company, Inc. | | Oil & Gas Operator | Feb 1990 |
| 19030 | Mobley Valve Service, Inc. | | Oil & Gas Operator | Nov 2006 |
| 19031 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | Jun 2026 |
| 19032 | Mobreal Oil Inc | Wilmington, DE 19808 | Oil & Gas Operator | Dec 1989 |
| 19033 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | Jun 2026 |
| 19034 | Moco Oil Inc | | Oil Operator | May 1984 |
| 19035 | Moco Operating Company | | Oil & Gas Operator | Mar 2002 |
| 19036 | Mode Oil & Gasdev LTD12/21/Ofb 9-98 | | Oil & Gas Operator | May 2013 |
| 19037 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2026 |
| 19038 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Jun 2026 |
| 19039 | Modus Inc. | | Oil & Gas Operator | Mar 2026 |
| 19040 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | Aug 2025 |
| 19041 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 19042 | Moffitt W G Trust | Fort Gibson, OK 74434-4258 | Gas Operator | Nov 2019 |
| 19043 | Mogo Operating, LLC | Norman, OK 73069 | Oil & Gas Operator | Mar 2026 |
| 19044 | Mogo Reagan, LLC | Cut Bank, MT 59427 | Oil & Gas Operator | Mar 2026 |
| 19045 | Mogul Energy Corp | Los Angeles, CA 90024 | Oil & Gas Operator | Jan 2001 |
| 19046 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 19047 | Mogul Operating LLC | St Pete Beach, FL 33706 | Oil Operator | Jun 2026 |
| 19048 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | Jun 2026 |
| 19049 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 19050 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 19051 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 19052 | Mohican Operating, L.L.C. | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 19053 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 19054 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 19055 | Mojave Operating Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 19056 | Mojave Resources, LLC | New Braunfels, TX 78132 | Oil Operator | Jun 2026 |
| 19057 | Mojo Exploration & Production, LLC | Rockdale, TX 76567 | Oil Operator | Jun 2026 |
| 19058 | Mokan Capital, LLC | Spicewood, TX 78669 | Oil Operator | Jun 2026 |
| 19059 | Molder, Tom | Imperial, TX 79743 | Oil & Gas Operator | Jun 2026 |
| 19060 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Jun 2026 |
| 19061 | Mole Operating Co., Inc. | | Oil & Gas Operator | Oct 1983 |
| 19062 | Moleco, LLC | West Hills, CA 91308 | Oil Operator | Jun 2026 |
| 19063 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 19064 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Feb 2026 |
| 19065 | Mollenkopf Mark | Anadarko, OK 73005 | Oil Operator | Feb 2026 |
| 19066 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 19067 | Mollett Oil Productions, LLC | Thelma, KY 41260 | Oil Operator | Dec 2020 |
| 19068 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jun 2026 |
| 19069 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 19070 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 19071 | Molz Oil Company Inc | Kiowa, KS 67070 | Oil & Gas Operator | Mar 2026 |
| 19072 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Jun 2026 |
| 19073 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 19074 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 19075 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 19076 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Jun 2026 |
| 19077 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Jun 2026 |
| 19078 | Moms Oil & Gas LLC | Nowata, OK 74048 | Oil & Gas Operator | Mar 2023 |
| 19079 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Jun 2026 |
| 19080 | Mon-Oil Inc | | Oil & Gas Operator | Apr 1996 |
| 19081 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 19082 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 19083 | Monago Operating Inc | | Oil & Gas Operator | Apr 2007 |
| 19084 | Monahan | | Oil Operator | Dec 2009 |
| 19085 | Monahan Rex | Sterling, CO 80751 | Oil & Gas Operator | Jun 2002 |
| 19086 | Monahan* Rex Family Trust | | Oil & Gas Operator | May 2007 |
| 19087 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 19088 | Monarch Energy Company LLC | Eufaula, OK 74432 | Oil & Gas Operator | Feb 2026 |
| 19089 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Feb 2026 |
| 19090 | Monarch Petroleum Corporation | FT Worth, TX 76102 | Oil & Gas Operator | Dec 2019 |
| 19091 | Moncrief Oil | Casper, WY 82602 | Oil & Gas Operator | Feb 1986 |
| 19092 | Moncrief R W Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1994 |
| 19093 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 19094 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 19095 | Monday Creek Resources LTD | Logan, OH 43138 | Oil Operator | Dec 2025 |
| 19096 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jun 2026 |
| 19097 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2026 |
| 19098 | Monex | | Oil Operator | Apr 1988 |
| 19099 | Monexco | Edmond, OK 73034-3776 | Oil & Gas Operator | Mar 2008 |
| 19100 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Feb 2026 |