| 18701 | Maxoil Inc. | | Oil & Gas Operator | Dec 2004 |
| 18702 | Maxson Gas Corp | Shinglehouse, PA 16748-0436 | Oil & Gas Operator | Dec 2024 |
| 18703 | Maxson Lawrence C | Shinglehouse, PA 16748 | Oil & Gas Operator | Dec 2016 |
| 18704 | Maxum Energy Corp | Plano, TX 75025 | Oil & Gas Operator | Jan 2003 |
| 18705 | Maxus Exploratio | | Oil Operator | Jun 1991 |
| 18706 | Maxus Exploration Company | Dallas, TX 75201 | Oil & Gas Operator | Jan 1995 |
| 18707 | Maxwell Bros | Clarion, PA 16214-7446 | Oil & Gas Operator | Dec 2024 |
| 18708 | Maxwell Oil & Gas Corp. | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2001 |
| 18709 | Maxwell Operating Co., Inc. | Englewood, CO 80155 | Oil Operator | Jan 2007 |
| 18710 | Maxwell Resources Corporation | Oklahoma City, OK 73116-7746 | Oil & Gas Operator | Apr 2009 |
| 18711 | Maxwell, J. K. | Kilgore, TX 75662 | Oil & Gas Operator | Aug 1995 |
| 18712 | Maxwell, Richard | Wichita Falls, TX 76301 | Oil & Gas Operator | May 1995 |
| 18713 | Maxwell, Riley G., Co. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 18714 | May Energy Company | Stroud, OK 74079 | Oil & Gas Operator | May 2013 |
| 18715 | May Gas, Inc. | | Oil & Gas Operator | Dec 2008 |
| 18716 | May Investments, Inc. | New Boston, TX 75570 | Oil & Gas Operator | Aug 2003 |
| 18717 | May Oil & Gas, L.L.C. | | Oil & Gas Operator | Dec 2013 |
| 18718 | May Petroleum, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Nov 1998 |
| 18719 | Maya Oil LLC | | Oil Operator | Dec 2024 |
| 18720 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Jan 2025 |
| 18721 | Maybrier Brothers | | Oil Operator | Apr 2006 |
| 18722 | Maybrier Production, L.L.C. | | Oil Operator | Oct 2022 |
| 18723 | Mayco Oil | Nocona, TX 76255 | Oil & Gas Operator | Apr 2025 |
| 18724 | Mayes Donald W & Associates | Piedmont, OK 73078-0051 | Oil & Gas Operator | Dec 1996 |
| 18725 | Mayes Operating Co. | Stephenville, TX 76401 | Oil & Gas Operator | Oct 2019 |
| 18726 | Mayfield Energy, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 18727 | Mayfield Engineering Service | Tulsa, OK 74104 | Oil & Gas Operator | Apr 2025 |
| 18728 | Mayfield SWD LLC | McKinney, TX 75070-5020 | Oil & Gas Operator | Aug 2021 |
| 18729 | Mayhar N D | Eufaula, OK 74432 | Oil Operator | Apr 2015 |
| 18730 | Mayhew Properties | | Gas Operator | Dec 2024 |
| 18731 | Mayjac I, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 18732 | Maynard Oil Co. | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 18733 | Mayne & Mertz, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2013 |
| 18734 | Mayo Oil Co. | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2019 |
| 18735 | Mayo Ross L Inc | Oklahoma City, OK 73120-1426 | Oil & Gas Operator | Jan 1997 |
| 18736 | Mayo, Danny | Whitesboro, TX 76273 | Oil & Gas Operator | Apr 2025 |
| 18737 | Mayo, Eddie | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 2025 |
| 18738 | Mayo, Keith | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 2009 |
| 18739 | Mayo, Paul R. | Quinlan, TX 75474 | Oil & Gas Operator | May 1999 |
| 18740 | Mays Coal Co | Clarion, PA 16214-0447 | Gas Operator | Dec 2003 |
| 18741 | Mays Gas & Coal Co | Clarion, PA 16214-0447 | Oil & Gas Operator | Dec 2024 |
| 18742 | Mays Oil LLC | | Oil Operator | Apr 2021 |
| 18743 | Mays, Sam W., Jr. Estate | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2005 |
| 18744 | Mayshark, James Page | Sherman, NY 14781 | Gas Operator | Dec 2023 |
| 18745 | Mazco Energy LLC | San Antonio, TX 78266 | Oil & Gas Operator | Apr 2025 |
| 18746 | Mazel Oil & Gas Co. | Austin, TX 78768 | Gas Operator | Jan 1994 |
| 18747 | Mazurkiewicz, Gary, Kimberly, Matt | Perrysburg, NY 14129 | Gas Operator | Dec 2023 |
| 18748 | MB Energy, LLC | San Antonio, TX 78233 | Oil & Gas Operator | Apr 2025 |
| 18749 | MB Exploration, LLC | Dallas, TX 75380 | Oil & Gas Operator | Jul 2008 |
| 18750 | MB Holdings LLC | Independence, KS 67301 | Oil Operator | Dec 2024 |
| 18751 | MB Operating | Wichita Falls, TX 76309 | Oil & Gas Operator | Mar 2008 |
| 18752 | MBC Operating Co., Inc. | Garland, TX 75042 | Oil & Gas Operator | Aug 1993 |
| 18753 | Mbi Oil & Gas LLC | Dickinson, ND 58601 | Oil & Gas Operator | Feb 2025 |
| 18754 | MBM Partnership | | Gas Operator | Nov 1991 |
| 18755 | MBM Production, LLC | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2023 |
| 18756 | Mbo, LLC | | Oil Operator | Jan 2025 |
| 18757 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2025 |
| 18758 | MBS Resources Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2024 |
| 18759 | MBX Operating LLC | Houston, TX 77007 | Oil & Gas Operator | Apr 2025 |
| 18760 | MC C Oil Co Inc | Sedan, KS 67361 | Oil Operator | Apr 2016 |
| 18761 | MC Glover, LLC | Albany, TX 76430 | Oil Operator | Apr 2025 |
| 18762 | MC Oil, LLC | Morganfield, KY 42437 | Oil Operator | Dec 2023 |
| 18763 | MC Panhandle, Inc. | Tulsa, OK 74102 | Gas Operator | Jul 1998 |
| 18764 | MC1 Consulting, Inc. | San Antonio, TX 78209 | Oil Operator | Apr 2025 |
| 18765 | MC123 LLC | Indiana, PA 15701-8718 | Gas Operator | Dec 2024 |
| 18766 | McA Petroleum Corporation | Flatonia, TX 78941 | Oil & Gas Operator | Apr 2025 |
| 18767 | McAdams Roux & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1999 |
| 18768 | McAdams, J F | | Oil Operator | May 1971 |
| 18769 | McAlester Fuel Co | Houston, TX 77042 | Oil & Gas Operator | Jan 2010 |
| 18770 | McAnear Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Dec 2002 |
| 18771 | McAninch J W | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2000 |
| 18772 | McAninch Michael E | Tonkawa, OK 74653-4415 | Oil & Gas Operator | May 2013 |
| 18773 | McAninch W Kent | Tonkawa, OK 74653-4216 | Oil & Gas Operator | Oct 2016 |
| 18774 | McBay Company | Grapeland, TX 75844 | Oil & Gas Operator | Feb 2002 |
| 18775 | McBee Company, The | Dallas, TX 75219 | Oil & Gas Operator | Dec 1997 |
| 18776 | McBee Operating Company, L.L.C. | Dallas, TX 75209 | Oil & Gas Operator | Apr 2025 |
| 18777 | McBee, Jim Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2012 |
| 18778 | McBo Oil Co. | | Oil & Gas Operator | Dec 1996 |
| 18779 | McBrayer Oil Corporation | Rockport, TX 78381 | Oil & Gas Operator | Nov 1994 |
| 18780 | McBride Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 18781 | McBride Production Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 1993 |
| 18782 | McBride, Jane | Perry, NY 14530 | Gas Operator | Dec 2023 |
| 18783 | McBride, Jerrel L Enterprise Inc | Kilgore, TX 75663 | Oil & Gas Operator | Jun 1999 |
| 18784 | McBride, Nicholas J. & Holly M. | Lakeland, FL 33810 | Gas Operator | Dec 2023 |
| 18785 | McCabe & Co | Albion, PA 16401-8013 | Oil & Gas Operator | Dec 1994 |
| 18786 | McCabe Douglas | Pawhuska, OK 74056 | Oil Operator | Feb 2012 |
| 18787 | McCabe Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2009 |
| 18788 | McCabe Oil & Gas LLC | Dewey, OK 74029 | Oil Operator | Jan 2025 |
| 18789 | McCabe, William G | | Oil & Gas Operator | Aug 2013 |
| 18790 | McCaffery & Krampf Oil Co. | Allegany, NY 14706 | Oil Operator | Dec 2012 |
| 18791 | McCall Carl E | Fairmount City, PA 16224 | Oil & Gas Operator | Dec 2024 |
| 18792 | McCamey Oil And Gas LLC | MC Camey, TX 79752 | Oil Operator | Apr 2025 |
| 18793 | McCammon Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2025 |
| 18794 | McCandless Rober | | Oil & Gas Operator | May 1991 |
| 18795 | McCandlish R L Oil Co Inc | Bremen, OH 43107 | Oil & Gas Operator | Dec 1997 |
| 18796 | McCann Corporation | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 18797 | McCann Drilling | | Oil & Gas Operator | Oct 1996 |
| 18798 | McCann Drilling, Inc. | Bartlesville, OK 74003 | Oil Operator | Mar 2011 |
| 18799 | McCann Mark Wind | | Oil & Gas Operator | Dec 1994 |
| 18800 | McCann Petroleum, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Jul 1998 |