| 17901 | Mark Seifer | | Oil & Gas Operator | Jul 2024 |
| 17902 | Mark T. Kellner Oil Co. | Olean, NY 14760 | Oil & Gas Operator | Dec 2023 |
| 17903 | Mark V Petroleum Company | | Oil & Gas Operator | Feb 2020 |
| 17904 | Markan Oil Incor | | Oil Operator | Mar 1991 |
| 17905 | Markay Oil & Gas Company | Midland, TX 79701 | Oil & Gas Operator | Sep 1998 |
| 17906 | Marker Oil Compa | | Oil Operator | Jul 1985 |
| 17907 | Market Street Energy, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Nov 2024 |
| 17908 | Markham, Charles A., Jr. & Janet E. | Gowanda, NY 14070 | Gas Operator | Dec 2023 |
| 17909 | Markley Exploration | Bixby, OK 74008-5332 | Oil & Gas Operator | Jan 2014 |
| 17910 | Markley L C Corporation | Fletcher, OK 73541 | Oil & Gas Operator | Aug 2002 |
| 17911 | Marks & Co., Inc. | | Oil & Gas Operator | Dec 2021 |
| 17912 | Marks And Garner Production LTD Co | Hobbs, NM 88241 | Oil & Gas Operator | Sep 2010 |
| 17913 | Marks Operating LLC | | Oil & Gas Operator | Jul 2016 |
| 17914 | Marksmen Energy USA Inc | Worthington, OH 43085-1270-1270 | Oil Operator | Dec 2020 |
| 17915 | Markus Production | Littleton, CO 80123 | Oil & Gas Operator | Jul 2024 |
| 17916 | Markus Production, Inc | | Oil & Gas Operator | Mar 2021 |
| 17917 | Markwell Jr Ed L | | Oil & Gas Operator | Oct 1998 |
| 17918 | Markwest Resources Inc | Englewood, CO 801125004 | Oil & Gas Operator | Jun 2003 |
| 17919 | Marlan Anderson | | Oil Operator | Jul 2024 |
| 17920 | Marler Philip | Purcell, OK 73080-1522 | Oil & Gas Operator | Nov 2016 |
| 17921 | Marlin And Davis | | Oil Operator | Sep 1987 |
| 17922 | Marlin Coastal, L.L.C. | | Oil & Gas Operator | Apr 2008 |
| 17923 | Marlin Energy Offshore, L.L.C. | | Oil & Gas Operator | Jun 2006 |
| 17924 | Marlin Energy Resources, LLC | Lafayette, LA 70503 | Oil & Gas Operator | May 2018 |
| 17925 | Marlin Energy Southwest GP, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Nov 2024 |
| 17926 | Marlin Expl.,Inc&Exchg O&G Co | | Oil & Gas Operator | Jun 1987 |
| 17927 | Marlin Exploration, Inc. | | Oil & Gas Operator | Oct 2006 |
| 17928 | Marlin Exploration, LLC | | Oil & Gas Operator | Aug 2024 |
| 17929 | Marlin Oil & Gas | Pawhuska, OK 74056 | Oil Operator | Sep 2024 |
| 17930 | Marlin Oil Company LLC | Gillette, WY 82718 | Oil & Gas Operator | Mar 2023 |
| 17931 | Marlin Oil Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Sep 2024 |
| 17932 | Marlin Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Sep 2024 |
| 17933 | Marlin Pacific Oil & Gas | | Oil & Gas Operator | Dec 2003 |
| 17934 | Marlin Resources, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 17935 | Marline Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 1989 |
| 17936 | Marline Petroleum Corporation | | Oil & Gas Operator | Dec 1985 |
| 17937 | Marlow Environmental LLC | Marlow, OK 73055 | Oil Operator | May 2022 |
| 17938 | Marlyn Company | | Oil & Gas Operator | Dec 2009 |
| 17939 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |
| 17940 | Marmac Petroleum Company | Denver, CO 80222 | Oil Operator | Apr 1998 |
| 17941 | Marmac Resources Co. | Los Angeles, CA 90027 | Oil & Gas Operator | Mar 2015 |
| 17942 | Marmac Resources Inc | | Oil Operator | Nov 1998 |
| 17943 | Marmaton Oil Company | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |
| 17944 | Marmik Oil Compa | | Oil Operator | Jun 1995 |
| 17945 | Marmik Oil Company | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2015 |
| 17946 | Maroon Energy LLC | Spring, TX 77379 | Oil & Gas Operator | Nov 2024 |
| 17947 | Maroski, Inc. | | Oil Operator | Jan 1989 |
| 17948 | Marple Petroleum LLC | Edmond, OK 73013 | Oil Operator | Aug 2024 |
| 17949 | Marquee Corporation | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 17950 | Marquis Resources, LLC | | Oil & Gas Operator | Jul 2021 |
| 17951 | Marquis-Allred Eng Inc | | Oil & Gas Operator | Apr 1992 |
| 17952 | Marquise Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Nov 1992 |
| 17953 | Marr Company | | Oil & Gas Operator | Feb 1989 |
| 17954 | Marr, M. H. | Dallas, TX 75201 | Gas Operator | Jan 2002 |
| 17955 | Marrow, N. S. | Austin, TX 78703 | Oil & Gas Operator | Aug 2012 |
| 17956 | Marrs Bros Oil Co Inc | Drumright, OK 74030 | Oil Operator | Sep 1994 |
| 17957 | Marrs, Richard L.(Deceased) | Arkansas City, KS 67005 | Oil & Gas Operator | Feb 2013 |
| 17958 | Marsh Engineering, Inc. | | Oil & Gas Operator | Dec 1990 |
| 17959 | Marsh Lonnie C | Konawa, OK 74849-4929 | Oil & Gas Operator | Aug 2024 |
| 17960 | Marsh Oil & Gas Company | Pauls Valley, OK 73075 | Oil & Gas Operator | Sep 2024 |
| 17961 | Marsh Oil & Gas Field Services, Inc | Sebree, KY 42455 | Oil & Gas Operator | Dec 2022 |
| 17962 | Marsh Operating Company | Dallas, TX 75221 | Oil & Gas Operator | Jul 2024 |
| 17963 | Marsha Azar | | Oil & Gas Operator | Jan 2017 |
| 17964 | Marshall & McCain | | Oil & Gas Operator | Oct 1988 |
| 17965 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 17966 | Marshall Crude Oil LLC | Crossett, AR 71635 | Oil Operator | Jul 2024 |
| 17967 | Marshall Energy, Inc. | Dallas, TX 75243 | Oil & Gas Operator | May 1997 |
| 17968 | Marshall Exploration, Inc. | | Oil & Gas Operator | Jul 1992 |
| 17969 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 17970 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 17971 | Marshall Oil, LLC | Eureka, KS 67045 | Oil Operator | Jul 2024 |
| 17972 | Marshall Petroleum, Inc. | Houston, TX 77040 | Oil & Gas Operator | Aug 2003 |
| 17973 | Marshall Pipe & Supply Co. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2008 |
| 17974 | Marshall Prod. & Energy Inc. | | Oil & Gas Operator | Jan 1992 |
| 17975 | Marshall Production Co Inc | | Oil & Gas Operator | Jun 1989 |
| 17976 | Marshall R Young Oil Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1996 |
| 17977 | Marshall R. Young Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 17978 | Marshall Richard R | Jeromesville, OH 44840 | Oil & Gas Operator | Dec 2023 |
| 17979 | Marshall Young Oil Co | | Oil & Gas Operator | Jan 2007 |
| 17980 | Marshall, A. B. | Houston, TX 77050 | Oil & Gas Operator | Sep 1995 |
| 17981 | Marshall, Dale | | Gas Operator | Dec 1995 |
| 17982 | Marshall, David | | Oil Operator | Oct 2021 |
| 17983 | Marshall, Sam | Granbury, TX 76048 | Oil & Gas Operator | Aug 2010 |
| 17984 | Marshall, Samuel Meek, Estate Of | Granbury, TX 76048 | Oil & Gas Operator | Nov 2024 |
| 17985 | Marshco Production LLC | Colorado City, TX 79512 | Oil Operator | Nov 2024 |
| 17986 | Marshel Inv | | Oil Operator | Oct 1991 |
| 17987 | Marshfield Oil & Gas, LLC | Houston, TX 77070 | Oil & Gas Operator | Nov 2024 |
| 17988 | Marshland Exploration Company | | Oil & Gas Operator | May 2006 |
| 17989 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 17990 | Martens & Peck Operating Co | | Gas Operator | Feb 1997 |
| 17991 | Martens & Peck Production Co | Denver, CO 80222 | Oil & Gas Operator | Feb 1997 |
| 17992 | Martex Oil & Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | Nov 2024 |
| 17993 | Martin & Richards Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 1995 |
| 17994 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 17995 | Martin Bros. Oil | Graham, TX 76450 | Oil & Gas Operator | Dec 1993 |
| 17996 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 17997 | Martin Cannon Interests, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 17998 | Martin Energy LLC | | Oil & Gas Operator | Apr 2023 |
| 17999 | Martin Exploration | Westminster, CO 80030 | Oil & Gas Operator | Dec 1993 |
| 18000 | Martin Exploration Co. | | Oil & Gas Operator | Apr 1986 |