| 17701 | Mapco Oil Company | | Oil & Gas Operator | Jan 1985 |
| 17702 | Mapco Production Co | Billings, MT 59102 | Oil & Gas Operator | Apr 1994 |
| 17703 | Maple Energy Holdings, LLC | Houston, TX 77007 | Oil & Gas Operator | Sep 2023 |
| 17704 | Maple Grove Enterprises Inc | Rimersburg, PA 16248-6415 | Oil & Gas Operator | Dec 2023 |
| 17705 | Maple Gulf Coast Props. Corp. | | Oil & Gas Operator | Jun 1989 |
| 17706 | Maple Lane Farms Dairy And Grain LLC | Marietta, NY 13110 | Gas Operator | Dec 2023 |
| 17707 | Maple Leaf Energ | | Oil & Gas Operator | Sep 1989 |
| 17708 | Maple Properties Corp | Dallas, TX 75204 | Oil & Gas Operator | Jan 1999 |
| 17709 | Mar Oil & Gas Corp. | Santa Fe, NM 87502 | Oil & Gas Operator | Jul 2024 |
| 17710 | Mar Oil Company | Upper Sandusky, OH 43351 | Oil & Gas Operator | Dec 2023 |
| 17711 | Mar-Bar Enterprises Inc | Cushing, OK 74023-3031 | Oil Operator | Jun 2024 |
| 17712 | Mar-Bec Energy Company, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | May 2001 |
| 17713 | Mar-Lou Oil Co., LLC | Wilson, KS 67490 | Oil Operator | May 2024 |
| 17714 | Mar-Low Corporation | | Oil & Gas Operator | Mar 1992 |
| 17715 | Mar-Win Development Co. | | Oil & Gas Operator | Nov 1988 |
| 17716 | Mar/Reg Investments | Irving, TX 75016 | Oil & Gas Operator | Jul 1999 |
| 17717 | Mar/Reg Oil Company | Reno, NV 89511 | Oil & Gas Operator | Jun 2024 |
| 17718 | Maralex Resources Inc | Ignacio, CO 81137 | Oil & Gas Operator | Jul 2024 |
| 17719 | Maralo, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1998 |
| 17720 | Maralo, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 17721 | Maram Energy Inc | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 2023 |
| 17722 | Maran Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2020 |
| 17723 | Maran Oil Company, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2022 |
| 17724 | Maranatha Energy Corporation | Princeton, WV 24740-0000 | Oil & Gas Operator | Dec 2021 |
| 17725 | Maranatha Exploration Inc | Killbuck, OH 44637 | Oil & Gas Operator | Dec 1992 |
| 17726 | Maranatha Exploration, LP | Wichita Falls, TX 76307 | Oil Operator | Feb 2012 |
| 17727 | Maranatha Oil Company | Gonzales, TX 78629 | Oil & Gas Operator | Sep 2024 |
| 17728 | Maranatha Petroleum Inc. | | Oil & Gas Operator | Jun 2024 |
| 17729 | Marata Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 17730 | Marathon Corporation | | Oil Operator | Dec 1994 |
| 17731 | Marathon Oil Co.-Rocky Mountain Region | Cody, WY 82414 | Oil Operator | Dec 1999 |
| 17732 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 17733 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Jul 2024 |
| 17734 | Marathon Oil Company Operator | | Oil & Gas Operator | Dec 1993 |
| 17735 | Marathon Oil Company/Fina | | Oil & Gas Operator | Jan 2005 |
| 17736 | Marathon Oil Ef LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
| 17737 | Marathon Oil Permian LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2024 |
| 17738 | Marben Corporation | | Oil Operator | Jul 1995 |
| 17739 | Marbet LLC | Edmond, OK 73013-6691 | Oil & Gas Operator | Jun 2024 |
| 17740 | Marbil Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | Jun 2013 |
| 17741 | Marbob Energy Corp | Artesia, NM 882110227 | Oil & Gas Operator | Oct 2010 |
| 17742 | Marchman, J. E. | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 17743 | Marco Drilling Inc | Monroeville, PA 15146-0278 | Oil & Gas Operator | Dec 2023 |
| 17744 | Marco Land & Petroleum, Inc. | | Oil & Gas Operator | Jun 2000 |
| 17745 | Marco Oil Co, Inc | Sparta, KY 41086 | Oil Operator | Dec 2021 |
| 17746 | Marco Oil Compan | | Oil & Gas Operator | Aug 1992 |
| 17747 | Marco Oil Company LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Jun 2024 |
| 17748 | Marco Polo Exploration, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | Dec 1993 |
| 17749 | Marcon Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Oct 2011 |
| 17750 | Marcum Drilling Co. | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 17751 | Marcus Exploration Inc | Piedmont, OK 73078-0308 | Oil & Gas Operator | Dec 2000 |
| 17752 | Mardale Drilling Company | Oklahoma City, OK 73157 | Oil Operator | Nov 1998 |
| 17753 | Marden Petroleum Exp Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 1990 |
| 17754 | Marden Producing | | Gas Operator | Aug 1990 |
| 17755 | Marden Producing Company | Edmond, OK 73083 | Gas Operator | May 2024 |
| 17756 | Mare Energy | Danville, OH 43014 | Oil & Gas Operator | Dec 2021 |
| 17757 | Mare Energy LLC | Danville, OH 43014 | Oil & Gas Operator | Dec 2023 |
| 17758 | Marexco | | Oil & Gas Operator | Nov 1994 |
| 17759 | Marexco, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Sep 2024 |
| 17760 | Maria L. Andrade | | Oil Operator | Dec 2006 |
| 17761 | Mariacher, Matthew | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 17762 | Mariah Energy Corp. | Austin, TX 78716 | Oil & Gas Operator | Apr 1999 |
| 17763 | Mariah Exploration LLC | Pawhuska, OK 74056 | Oil & Gas Operator | Oct 2008 |
| 17764 | Mariah Operating Company, LLC | Denver, CO 80201 | Oil & Gas Operator | Dec 2009 |
| 17765 | Marianas Operating Co. | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 17766 | Marieff Petroleum, Inc. | Sagamore Hills, OH 44067 | Gas Operator | Dec 2023 |
| 17767 | Marienfeld Exploration | Houston, TX 77005 | Oil & Gas Operator | Mar 1994 |
| 17768 | Marienfeld Exploration, Inc. | Ojai, CA 93024 | Oil & Gas Operator | Sep 2024 |
| 17769 | Marietta Royalty Co Inc | Stillwater, OK 74076 | Oil & Gas Operator | Dec 1986 |
| 17770 | Marina Pacifica Oil Company | | Oil & Gas Operator | Dec 1981 |
| 17771 | Marine Cont. & Supply Inc. | | Oil & Gas Operator | Nov 1985 |
| 17772 | Marine Properties, Inc. | | Oil & Gas Operator | Feb 1995 |
| 17773 | Mariner Energy, Inc. | Houston, TX 77042 | Oil & Gas Operator | Nov 2010 |
| 17774 | Marino, Charles B. | Tomball, TX 77377 | Oil & Gas Operator | Sep 2024 |
| 17775 | Marion Corporation | | Oil & Gas Operator | Jan 2001 |
| 17776 | Marion County Prod. Co., L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2024 |
| 17777 | Marion Energy Inc | Houston, TX 770082292 | Oil & Gas Operator | May 2015 |
| 17778 | Marion Operating Corp | Marion, OH 43301-0453-0453 | Oil & Gas Operator | Dec 2020 |
| 17779 | Mariposa Petroleum Co. | | Gas Operator | Dec 1980 |
| 17780 | Maritech Resources, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2009 |
| 17781 | Maritech Resources, LLC | | Oil & Gas Operator | May 2011 |
| 17782 | Marjac Energy Co | Bremen, OH 43107 | Oil & Gas Operator | Dec 1986 |
| 17783 | Marjac Oil Company, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2024 |
| 17784 | Marjo Incorporat | | Oil & Gas Operator | Jun 1990 |
| 17785 | Marjo Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Oct 1999 |
| 17786 | Marjo Operating Company Inc | Tulsa, OK 741010729 | Oil & Gas Operator | Jun 2024 |
| 17787 | Marjo Operating Mid-Continent LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2024 |
| 17788 | Marjo, Inc. | | Oil & Gas Operator | Sep 1991 |
| 17789 | Mark & Troy Johnson | Sugar Grove, PA 16350-5938 | Oil Operator | Dec 2023 |
| 17790 | Mark A & Michael J Midlik | Warren, PA 16365-2029 | Oil & Gas Operator | Dec 2015 |
| 17791 | Mark A Meier Dba MSC Oil And Gas Co | Oklahoma City, OK 73105 | Oil & Gas Operator | Jul 2024 |
| 17792 | Mark F Preddy & Associates,Inc | | Oil & Gas Operator | Dec 1987 |
| 17793 | Mark Holloway Inc | Oklahoma City, OK 73107-6526 | Oil & Gas Operator | Jun 2024 |
| 17794 | Mark I Oil Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2024 |
| 17795 | Mark III Oil, Inc. | Wichita, KS 67206 | Oil Operator | Dec 2009 |
| 17796 | Mark IV Energy | San Antonio, TX 78213 | Oil & Gas Operator | Apr 1993 |
| 17797 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Jul 2024 |
| 17798 | Mark Oil, Inc. | Chanute, KS 66720 | Oil Operator | May 2024 |
| 17799 | Mark Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2018 |
| 17800 | Mark Producing, Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 1987 |