| 20001 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Apr 2025 |
| 20002 | Monticola Exploration & Production, Inc. | | Gas Operator | Dec 2021 |
| 20003 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Apr 2025 |
| 20004 | Monty L Hott Production Corporation | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2025 |
| 20005 | Monument Gas Marketing Inc | | Oil & Gas Operator | Feb 2025 |
| 20006 | Monument Global Resources Inc | Dallas, TX 75243 | Oil & Gas Operator | Jan 2025 |
| 20007 | Monument Production Inc. | | Oil & Gas Operator | Dec 2011 |
| 20008 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 20009 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 20010 | Moody Oil & Gas Co. | Bridgeport, WV 26330-1051 | Oil & Gas Operator | Dec 2004 |
| 20011 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Apr 2025 |
| 20012 | Moog Inc. | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 20013 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 20014 | Moon-Hines-Tigrett Operating Co., Inc. | | Oil & Gas Operator | Feb 2025 |
| 20015 | Moon-Hines-Tigrett Opr Co Inc | | Oil & Gas Operator | Oct 1995 |
| 20016 | Moonlight Oil And Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 20017 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Apr 2025 |
| 20018 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 20019 | Moore & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1993 |
| 20020 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 20021 | Moore & Moore Energy Inc | Purcell, OK 73080-0674 | Oil & Gas Operator | Dec 2012 |
| 20022 | Moore Clay | Bradenton, FL 34211 | Oil & Gas Operator | Jan 2025 |
| 20023 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Apr 2025 |
| 20024 | Moore David K | Duncan, OK 73575 | Oil & Gas Operator | Oct 2009 |
| 20025 | Moore Don | Elmore City, OK 73433 | Oil & Gas Operator | Jan 2025 |
| 20026 | Moore DRLG LLC | MT Vernon, OH 43050 | Oil Operator | Dec 2024 |
| 20027 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 20028 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Apr 2025 |
| 20029 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 20030 | Moore Investments LC | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Feb 2023 |
| 20031 | Moore Lynn D | Collinsville, OK 74021 | Oil Operator | Aug 2013 |
| 20032 | Moore McCormack Energy, Inc. | | Oil & Gas Operator | Jul 1988 |
| 20033 | Moore Michael | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 2013 |
| 20034 | Moore Oil & Gas-Marion Corp. | | Oil & Gas Operator | Nov 1986 |
| 20035 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Apr 2025 |
| 20036 | Moore Petroleum Invest Corp | Norman, OK 73072-4217 | Oil & Gas Operator | Jan 2025 |
| 20037 | Moore Resources LLC | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2024 |
| 20038 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 20039 | Moore Robert L | Perryton, TX 79070-1275 | Oil & Gas Operator | Apr 2020 |
| 20040 | Moore Tommy M | Sapulpa, OK 74066-8273 | Oil & Gas Operator | May 2013 |
| 20041 | Moore W T | Sapulpa, OK 74067-0946 | Oil & Gas Operator | Jan 2021 |
| 20042 | Moore Well Services Inc | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2024 |
| 20043 | Moore&Munger Hydrocarbons Inc | | Oil Operator | May 1987 |
| 20044 | Moore, Brent L. | McPherson, KS 67460 | Oil Operator | Dec 1996 |
| 20045 | Moore, Clay (Deceased) | Dallas, TX 75218 | Oil Operator | Sep 2001 |
| 20046 | Moore, Douglas L. | Gridley, KS 66852 | Oil Operator | Jan 2019 |
| 20047 | Moore, J.W. Oil Co | Llano, TX 78643 | Oil Operator | Apr 2025 |
| 20048 | Moore, John D. | Midland, TX 79708 | Oil & Gas Operator | Mar 1995 |
| 20049 | Moore, Kirby | Ozona, TX 76943 | Oil & Gas Operator | Jul 1996 |
| 20050 | Moore, Mark C. | Darien Center, NY 14040 | Gas Operator | Dec 2023 |
| 20051 | Moore, Miles Inc. | Moran, TX 76464 | Oil & Gas Operator | Apr 2025 |
| 20052 | Moore, Stephen Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 20053 | Mooringsport Energy Prod Corp | | Oil & Gas Operator | Oct 1994 |
| 20054 | Mooringsport Energy Prod. Co. | Shreveport, LA 71162 | Oil & Gas Operator | Apr 2025 |
| 20055 | Mooringsport Energy Trans Corp | | Oil Operator | Apr 1990 |
| 20056 | Moose Mountain Divide #1, LLC | Roosevelt, UT 84066-1656 | Oil & Gas Operator | Feb 2025 |
| 20057 | Moose Oil & Gas Co. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 20058 | Moose Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 20059 | Mor-Co Investments, Inc. | | Gas Operator | Feb 1994 |
| 20060 | Mor-Meg Incorpor | | Oil Operator | Dec 1996 |
| 20061 | Morain Coating & Construc | Niles, OH 44446 | Oil & Gas Operator | Dec 1997 |
| 20062 | Moran Exploration, Inc. | | Oil & Gas Operator | Jan 1985 |
| 20063 | Moran James R | Frazeysburg, OH 43822 | Oil Operator | Dec 2017 |
| 20064 | Moran Oil Co., Inc. | | Oil & Gas Operator | Aug 2009 |
| 20065 | Moran Oil Enterprises, LLC | Seminole, OK 74818 | Oil & Gas Operator | Dec 2024 |
| 20066 | Moran Oil Partners LLC | Utica, OH 43080 | Oil Operator | Dec 2024 |
| 20067 | Moran Pipe & Supply Co Inc | Seminole, OK 74868 | Oil & Gas Operator | Jan 2019 |
| 20068 | Moran Ronald F | Frazeysburgysburg, OH 43822 | Oil & Gas Operator | Dec 2024 |
| 20069 | Moran Sherman Dean | Utica, OH 43080 | Oil & Gas Operator | Dec 2024 |
| 20070 | Moran Well Service Inc. | Gambier, OH 43022 | Oil & Gas Operator | Dec 2023 |
| 20071 | Moran, F E Oil Co | Evansville, IN 47715 | Oil Operator | Dec 2015 |
| 20072 | Moran-K Oil LLC | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 20073 | Moran-Kahn Oil | Seminole, OK 74868 | Oil & Gas Operator | Mar 1992 |
| 20074 | Moran-Lavaca, L.L.C. | Shreveport, LA 71134 | Oil Operator | Feb 2018 |
| 20075 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 20076 | More Texas Oil | Von Ormy, TX 78073 | Oil & Gas Operator | Apr 2025 |
| 20077 | Moreland Oil & Gas Inc | Dennison, OH 44621 | Oil & Gas Operator | Dec 1990 |
| 20078 | Morexco Inc | Midland, TX 79710 | Oil & Gas Operator | Mar 2019 |
| 20079 | Morgan Creek Gas Processing Co. | Houston, TX 77027 | Gas Operator | Aug 1998 |
| 20080 | Morgan Creek Production Co., Inc | Westbrook, TX 79565 | Oil & Gas Operator | Apr 2025 |
| 20081 | Morgan David E | Enid, OK 73702-3525 | Oil & Gas Operator | Sep 2016 |
| 20082 | Morgan E&P, LLC | | Oil & Gas Operator | Mar 2025 |
| 20083 | Morgan Energy Corporation | Englewood, CO 80110 | Oil & Gas Operator | Mar 2006 |
| 20084 | Morgan Enterprises | | Oil & Gas Operator | Aug 1997 |
| 20085 | Morgan Enterprises, Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 20086 | Morgan Oil Company | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2006 |
| 20087 | Morgan Operating, Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Oct 2024 |
| 20088 | Morgan Pennington Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1990 |
| 20089 | Morgan Petroleum Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 1993 |
| 20090 | Morgan Robert M / L Ladean | Wewoka, OK 74884-1515 | Oil & Gas Operator | Jul 2015 |
| 20091 | Morgan, C. V. Partnership | Olney, TX 76374 | Oil & Gas Operator | Jan 2009 |
| 20092 | Morgan, Mike | | Oil Operator | Dec 2014 |
| 20093 | Morgan, Robert L | | Oil Operator | Dec 2017 |
| 20094 | Morgas | Shamrock, TX 79079 | Gas Operator | Nov 1994 |
| 20095 | Morgenstern Oil Operations LLC | Ellinwood, KS 67526 | Oil Operator | Dec 2024 |
| 20096 | Moriah Operating,LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 20097 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 20098 | Morley, Kenneth A. | Sinclairville, NY 14782 | Gas Operator | Dec 2023 |
| 20099 | Mormack Ind Inc | Orrville, OH 44667 | Oil & Gas Operator | Dec 2024 |
| 20100 | Mormar Family Holdings, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |