| 701 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 702 | Leopoldo P Bustamante | Midland, TX 79710 | Oil & Gas Operator | Apr 2012 |
| 703 | LG&S Oil Company, LLC | Lovington, NM 88260 | Oil Operator | Feb 2026 |
| 704 | LH Operating, LLC | Fulshear, TX 77441 | Oil & Gas Operator | Feb 2026 |
| 705 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2026 |
| 706 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 707 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 708 | Linn Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 709 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 710 | Little Oil And Gas, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 711 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | May 2026 |
| 712 | Lizard Oil & Gas, LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Feb 2017 |
| 713 | Llano Land & Exploration Co | Roswell, NM 88202 | Oil & Gas Operator | Sep 2004 |
| 714 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 2026 |
| 715 | LLJ Ventures, LLC Dba Marker Oil & Gas | Roswell, NM 88202 | Oil & Gas Operator | Apr 2022 |
| 716 | Lobo Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 717 | Locke-Taylor Drilling Co | Rifle, CO 81650 | Gas Operator | Mar 2006 |
| 718 | Lodestone Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2026 |
| 719 | Logos Operating, LLC | Farmington, NM 87401 | Oil & Gas Operator | Mar 2026 |
| 720 | Lone Star Oil & Gas, Inc. | Greenville, KY 42345 | Oil & Gas Operator | Dec 2024 |
| 721 | Lonestar Petroleum Services, LLC | Artesia, NM 88210 | Oil Operator | Feb 2026 |
| 722 | Long Trust The | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2008 |
| 723 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | May 2026 |
| 724 | Lothian Oil Texas I, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 725 | Louis Dreyfus Natural Gas Inc | Houston, TX 770103088 | Oil & Gas Operator | Sep 1997 |
| 726 | LT Oil Company | Midland, TX 79705 | Oil & Gas Operator | May 2026 |
| 727 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | May 2026 |
| 728 | Lynx Petroleum Consultants Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2024 |
| 729 | M & G DRLG Co Inc | Farmington, NM 87499 | Oil & Gas Operator | Mar 2026 |
| 730 | M & G Oil Inc | Russell, KS 67665 | Oil Operator | Jan 2026 |
| 731 | M & L Enterprises A Partnership | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2001 |
| 732 | M & M Production & Operation | Farmington, NM 87402 | Oil & Gas Operator | Oct 2019 |
| 733 | M & W Of Lovington Inc | Lovington, NM 88260 | Oil & Gas Operator | Jan 2011 |
| 734 | M Brad Bennett Inc | Midland, TX 797101510 | Oil & Gas Operator | Jul 2006 |
| 735 | M C Gandy & Dale Gandy | Hobbs, NM BADADDR | Oil Operator | Sep 2008 |
| 736 | M E W Enterprise | Roswell, NM 88203 | Oil & Gas Operator | Aug 2024 |
| 737 | M R Drilling Company | Monahans, TX 79756 | Oil & Gas Operator | Feb 1998 |
| 738 | M R Schalk | Albuquerque, NM 87125 | Oil & Gas Operator | Jul 2022 |
| 739 | M&M Energy, LLC | El Paso, TX 79902 | Oil Operator | Dec 2020 |
| 740 | M&M Oil, LLC | Artesia, NM 86210 | Oil & Gas Operator | Apr 2026 |
| 741 | M-T Petroleum, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Mar 2008 |
| 742 | M7 Resources LLC | Santa Fe, NM 87505 | Oil Operator | Oct 2025 |
| 743 | Mack Energy Corporation | Artesia, NM 88211 | Oil & Gas Operator | Mar 2026 |
| 744 | Maddox Energy Corp | Dallas, TX BAD ADDR | Oil & Gas Operator | Jul 1995 |
| 745 | Maersk Energy Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 1994 |
| 746 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 747 | Mammoth Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2023 |
| 748 | Manana Gas Inc | Albuquerque, NM 87122 | Oil & Gas Operator | Mar 2026 |
| 749 | Manhattan Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 750 | Manzanita Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 751 | Manzano Oil Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2005 |
| 752 | Manzano, LLC | Roswell, NM 88202 | Oil & Gas Operator | May 2026 |
| 753 | Mar Oil & Gas Corp. | Santa Fe, NM 87502 | Oil & Gas Operator | Mar 2026 |
| 754 | Maralex Resources Inc | Ignacio, CO 81137 | Oil & Gas Operator | Mar 2026 |
| 755 | Maralo, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 756 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Mar 2026 |
| 757 | Marathon Oil Permian LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2026 |
| 758 | Marbob Energy Corp | Artesia, NM 882110227 | Oil & Gas Operator | Oct 2010 |
| 759 | Marcum Drilling Co. | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 760 | Marjo Operating Company Inc | Tulsa, OK 741010729 | Oil & Gas Operator | Feb 2026 |
| 761 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Mar 2026 |
| 762 | Marks And Garner Production LTD Co | Hobbs, NM 88241 | Oil & Gas Operator | Sep 2010 |
| 763 | Markwest Resources Inc | Englewood, CO 801125004 | Oil & Gas Operator | Jun 2003 |
| 764 | Marlin Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Feb 2026 |
| 765 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2026 |
| 766 | Marshall Pipe & Supply Co. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2008 |
| 767 | Marshall R Young Oil Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1996 |
| 768 | Mas Operating Co. | Midland, TX 79710 | Oil & Gas Operator | May 2026 |
| 769 | Mason-Phillips Properties Of Florida | Ville Beach, FL 32250 | Oil Operator | Apr 1999 |
| 770 | Matador Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Jul 2003 |
| 771 | Matador Production Company | Dallas, TX 75240 | Oil & Gas Operator | May 2026 |
| 772 | Matrix New Mexico Operating Company LLC | Sugarland, TX 77479 | Oil & Gas Operator | Aug 2010 |
| 773 | Maverick Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2026 |
| 774 | Maverick Permian LLC | Keithville, LA 71047 | Oil & Gas Operator | May 2026 |
| 775 | Maximum Lease Service, Inc | Eunice, NM 88231 | Oil & Gas Operator | Feb 2026 |
| 776 | Mayne & Mertz, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2013 |
| 777 | McCabe Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2009 |
| 778 | McCasland Management Inc | Hobbs, NM 88240 | Oil & Gas Operator | Aug 2020 |
| 779 | McClellan Oil Corporation | Roswell, NM 882020730 | Oil & Gas Operator | May 2015 |
| 780 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2026 |
| 781 | McDonnold Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2026 |
| 782 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
| 783 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | May 2026 |
| 784 | McKay Oil & Gas LLC | Albuquerque, NM 87191 | Gas Operator | Mar 2020 |
| 785 | McKay Oil Corp | Roswell, NM 88202 | Oil & Gas Operator | Aug 2017 |
| 786 | McKenzie Methane | Houston, TX BAD ADDR | Gas Operator | Apr 1994 |
| 787 | McQuadrangle, LC | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2006 |
| 788 | McRae & Henry LTD | Golden, CO 80401 | Oil & Gas Operator | May 2022 |
| 789 | Me-Tex Oil & Gas, Inc. | Hobbs, NM 88241 | Oil & Gas Operator | May 2026 |
| 790 | Meadco Properties LTD | Midland, TX 79702 | Oil & Gas Operator | Sep 2019 |
| 791 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 792 | Melrose Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2011 |
| 793 | Melvin Or Kathleen Turnbow | Portales, NM 88130 | Oil & Gas Operator | Mar 2006 |
| 794 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 795 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 796 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jan 2026 |
| 797 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Mar 2026 |
| 798 | Mesquite SWD Inc | Carlsbad, NM 88221 | Oil & Gas Operator | May 2026 |
| 799 | Meteor Developments Inc | Denver, CO BAD ADDR | Oil & Gas Operator | Dec 1995 |
| 800 | Mewbourne Oil Company | Tyler, TX 75711 | Oil & Gas Operator | May 2026 |