| 6801 | McIver, Inc | San Angelo, TX 76903 | Oil & Gas Operator | Apr 2024 |
| 6802 | McKay Oil | Portales, NM 88130 | Oil & Gas Operator | Apr 1996 |
| 6803 | McKay Operating LLC | Groom, TX 79039 | Oil & Gas Operator | Oct 2023 |
| 6804 | McKee, Kenneth W. Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Aug 2011 |
| 6805 | McKeever, Tyra, Swenson Venture | Stamford, TX 79553 | Oil & Gas Operator | Apr 1996 |
| 6806 | McKenney & Chambers Oil Company | Westbrook, TX 79565 | Oil & Gas Operator | Oct 2003 |
| 6807 | McKenzie Operating Company, Inc. | Graham, TX 76450 | Oil & Gas Operator | Aug 2011 |
| 6808 | McKenzie Production Company | Houston, TX 77063 | Oil & Gas Operator | May 1995 |
| 6809 | McKinney Operating Company | Canadian, TX 79014 | Gas Operator | May 2002 |
| 6810 | McKinney, M. H. | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 6811 | McKnight, C. L. | McLeod, TX 75565 | Oil & Gas Operator | Apr 2024 |
| 6812 | McKnight, C. L. Oil Co. LLP | McLeod, TX 75565 | Oil & Gas Operator | Apr 2024 |
| 6813 | McKnight, J. C. | Jefferson, TX 75657 | Oil & Gas Operator | Nov 2019 |
| 6814 | McLain Exploration, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Mar 2008 |
| 6815 | McLelland Engineering & MGMT. | Houston, TX 77042 | Oil & Gas Operator | Mar 1999 |
| 6816 | McLemore, Laurence | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2024 |
| 6817 | McLeod, George L. Inc. | Houston, TX 77079 | Oil & Gas Operator | Sep 2002 |
| 6818 | MCM Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2024 |
| 6819 | McMahon Operating Co., L.C. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2004 |
| 6820 | McMahon-Bullington Drilling Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 1996 |
| 6821 | McMahon-Bullington LP | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2009 |
| 6822 | McMinn Operating Company, Inc. | Hempstead, TX 77445 | Oil & Gas Operator | Apr 2024 |
| 6823 | McMoran Oil & Gas LLC | New Orleans, LA 70160 | Oil & Gas Operator | Oct 2021 |
| 6824 | McMullan Oil Company | San Antonio, TX 78212 | Oil & Gas Operator | May 2023 |
| 6825 | McMurrey, R. J., Production Comp | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 6826 | McNallen & Griffin | Keller, TX 76244 | Oil & Gas Operator | Apr 2024 |
| 6827 | McNallen Oil Co., Inc. | Keller, TX 76244 | Oil & Gas Operator | Apr 2024 |
| 6828 | McNic Oil & Gas Midcontinent,Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 1999 |
| 6829 | McOsker Bros., Inc. | San Antonio, TX 78264 | Oil & Gas Operator | Aug 2003 |
| 6830 | McQueen Ed & Company Inc | Lindsey, OK 73052 | Oil & Gas Operator | Apr 2014 |
| 6831 | MCR Operating Group | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2024 |
| 6832 | McRae & Henry LTD | Golden, CO 80401 | Oil & Gas Operator | May 2022 |
| 6833 | McRae Exploration & Prod., Inc. | Houston, TX 77064 | Oil & Gas Operator | Feb 2017 |
| 6834 | McRae, Nathan Rathburn | Hebbronville, TX 78361 | Oil & Gas Operator | Apr 1994 |
| 6835 | McShane, J. Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2004 |
| 6836 | MCZ, Inc. | Houston, TX 77026 | Oil & Gas Operator | Sep 1990 |
| 6837 | MD America Energy, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 6838 | MDC Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Oct 2022 |
| 6839 | MDC Texas Operator LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2024 |
| 6840 | MDF Oil Company | Floresville, TX 78114 | Oil Operator | Apr 2024 |
| 6841 | MDM Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | Apr 2024 |
| 6842 | Me-Tex Oil & Gas, Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Apr 2024 |
| 6843 | Me-Tex Supply Company | Hobbs, NM 88240 | Oil & Gas Operator | Jun 1993 |
| 6844 | Meadco Properties | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 6845 | Meade Energy Corporation | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Feb 2024 |
| 6846 | Meador Enterprises, Inc. | Kilgore, TX 75662 | Oil Operator | Oct 2023 |
| 6847 | Meador, John E. | Eldorado, TX 76936 | Oil & Gas Operator | Apr 2014 |
| 6848 | Meador, T. C. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2024 |
| 6849 | Meadows Oil Company | Plano, TX 75075 | Oil & Gas Operator | Aug 2004 |
| 6850 | Means Oil Co. | Corsicana, TX 75110 | Oil & Gas Operator | Feb 2013 |
| 6851 | Means Oil Company, LLC | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2024 |
| 6852 | Means, Frank L. | Corsicana, TX 75110 | Oil & Gas Operator | Jan 2001 |
| 6853 | Meason Operating Company | Natchez, MS 39121 | Oil & Gas Operator | Dec 2011 |
| 6854 | Meb, LLC | Austin, TX 78737 | Oil Operator | Apr 2024 |
| 6855 | Meco IV Holdco, LLC | Lakewood, CO 80227 | Oil & Gas Operator | Jul 2022 |
| 6856 | Meco IV, LLC | Lakewood, CO 80227 | Oil & Gas Operator | Jul 2021 |
| 6857 | Mecom Energy Corporation | Houston, TX 77030 | Oil & Gas Operator | Jan 1999 |
| 6858 | Medallion Exploration Corp. | Midvale, UT 84047 | Oil & Gas Operator | Oct 1998 |
| 6859 | Medallion Oil Company | Houston, TX 77251 | Oil & Gas Operator | Jan 2012 |
| 6860 | Medallion Petroleum, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2015 |
| 6861 | Medallion Production Company | Tulsa, OK 74103 | Oil & Gas Operator | May 1997 |
| 6862 | Medders Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 6863 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 6864 | Meeker & Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 6865 | Meeker, Dan Management, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Aug 2007 |
| 6866 | Megaenergy Operating, Inc. | Edmond, OK 73034 | Oil & Gas Operator | Jul 2015 |
| 6867 | Megg, L.P. | Borger, TX 79007 | Oil & Gas Operator | Apr 2024 |
| 6868 | Mego Resources, LLC | Taft, TX 78390 | Oil & Gas Operator | Apr 2024 |
| 6869 | Mehaffey Investments, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2024 |
| 6870 | Mei Operating Company | Lafayette, LA 70598 | Oil & Gas Operator | Aug 1997 |
| 6871 | Melcar Production | Tuscola, TX 79562 | Oil & Gas Operator | Apr 2024 |
| 6872 | Mello-Dy Resources, LLC | Devine, TX 78016 | Oil Operator | Apr 2024 |
| 6873 | Mellon Creek Operating Co. | Victoria, TX 77901 | Oil & Gas Operator | Jun 1993 |
| 6874 | Mellon Oil Unit | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 6875 | Melrose Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2011 |
| 6876 | Melton Operating Co. | Friendswood, TX 77546 | Oil & Gas Operator | Jul 2005 |
| 6877 | Melton, Joe, DRLG. Co., Inc. | Midland, TX 79704 | Oil & Gas Operator | Dec 2004 |
| 6878 | Melzer Exploration Company | Midland, TX 79702-2083 | Oil & Gas Operator | May 2013 |
| 6879 | Memorial Exploration Company | Saint Louis, MO 63105 | Oil & Gas Operator | Aug 1996 |
| 6880 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 6881 | Menasco, J. | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2019 |
| 6882 | Mer Resources | Edmond, OK 73013 | Oil & Gas Operator | Apr 2024 |
| 6883 | Mercantile Oil & Gas Prod. Corp. | Galena Park, TX 77547 | Oil & Gas Operator | Jun 2016 |
| 6884 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 6885 | Mercury Operating, LLC | Dallas, TX 75208 | Oil & Gas Operator | Apr 2024 |
| 6886 | Mercury Production Company | Fort Worth, TX 76113 | Gas Operator | Aug 2012 |
| 6887 | Mereken Energy Corp. | Fort Worth, TX 76102 | Gas Operator | Feb 2006 |
| 6888 | Merenco | Midland, TX 79702 | Oil & Gas Operator | Dec 1996 |
| 6889 | Merex Resources, Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Sep 2019 |
| 6890 | Meridian Exploration Corp. | Pittsburgh, PA 15222 | Oil & Gas Operator | Dec 2021 |
| 6891 | Meridian Interests, Inc. | San Antonio, TX 78239 | Oil & Gas Operator | Aug 2003 |
| 6892 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 6893 | Meridian Oil Inc.-Midland | Midland, TX 79702 | Oil & Gas Operator | Jul 1996 |
| 6894 | Meridian Oil Production Inc. | Houston, TX 77210 | Oil & Gas Operator | Oct 2022 |
| 6895 | Meridian Resource & Expl Co, The | Houston, TX 77077 | Oil & Gas Operator | Dec 2000 |
| 6896 | Meridian Resource & Expl LLC,The | Houston, TX 77094 | Oil & Gas Operator | Nov 2012 |
| 6897 | Merimac Investments, Inc. | Fort Worth, TX 76109 | Oil & Gas Operator | Jan 1997 |
| 6898 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 6899 | Merit Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | May 1994 |
| 6900 | Merit Oilfield Services | Buna, TX 77612 | Oil & Gas Operator | Mar 2023 |