| 19901 | Munoco Co. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2021 |
| 19902 | Munoco Co. L.C. | | Oil & Gas Operator | Jun 2003 |
| 19903 | Munoz Farms Operating Co., LLC | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Jul 2025 |
| 19904 | Munson Dave Company | Dallas, TX 75201-3591 | Oil Operator | Aug 1996 |
| 19905 | Munson Operating, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 19906 | Munson, Charles C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2002 |
| 19907 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 19908 | Munson, David M. Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 19909 | Munson, E. P., Jr. | Fort Worth, TX 76121 | Oil & Gas Operator | Oct 1995 |
| 19910 | Muras Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 19911 | Murchison Oil & | | Oil Operator | Mar 1988 |
| 19912 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Mar 2024 |
| 19913 | Murchison Oil And Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Feb 2025 |
| 19914 | Murchison Trusts | | Gas Operator | Sep 2003 |
| 19915 | Murchison, G. B. Trust | Dallas, TX 75283 | Oil & Gas Operator | Sep 1994 |
| 19916 | Murdoch Oil Co Inc | Bluff, UT 84512 | Oil & Gas Operator | Jun 2010 |
| 19917 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | May 2025 |
| 19918 | Murexco Petroleum, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 1996 |
| 19919 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 19920 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 19921 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Mar 2025 |
| 19922 | Murk, James M. | Wheaton, IL 60189 | Gas Operator | Jan 1999 |
| 19923 | Muroz International Group Inc | Houston, TX 77056 | Oil Operator | Jul 2025 |
| 19924 | Murphree Brothers Production | Monahans, TX 79756 | Oil & Gas Operator | Jul 2025 |
| 19925 | Murphree Production | Monahans, TX 79756 | Oil & Gas Operator | Jul 2014 |
| 19926 | Murphrey Oil Co | | Oil Operator | Jan 2025 |
| 19927 | Murphy & Associates, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Oct 1996 |
| 19928 | Murphy - Sun | | Oil & Gas Operator | May 1989 |
| 19929 | Murphy D V | | Oil Operator | Dec 1989 |
| 19930 | Murphy Energy Services, LP | Saratoga, TX 77585 | Oil Operator | Dec 2018 |
| 19931 | Murphy Exp & Prod Co.-USA | | Oil & Gas Operator | May 2014 |
| 19932 | Murphy Expl. & Prod. Co. - USA | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 19933 | Murphy Exploration & Prod. Co. | Houston, TX 77094 | Oil & Gas Operator | Jun 2011 |
| 19934 | Murphy Exploration & Production | Houston, TX 77024 | Oil Operator | Dec 2024 |
| 19935 | Murphy Helen Colpitt Trust | Collinsville, OK 74021-0128 | Oil & Gas Operator | May 2002 |
| 19936 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |
| 19937 | Murphy Oil Company Inc | Lancaster, OH 43130 | Oil & Gas Operator | Dec 2024 |
| 19938 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 19939 | Murphy Operating Corp | Roswell, NM 88202 | Oil & Gas Operator | Apr 1998 |
| 19940 | Murphy Prod Inc | Vanderbilt, PA 15486-1001 | Oil & Gas Operator | Dec 2024 |
| 19941 | Murphy Production Co. (Inc.) | | Oil & Gas Operator | Apr 1991 |
| 19942 | Murphy Production Corp. | Austin, TX 78731 | Oil & Gas Operator | Sep 2013 |
| 19943 | Murphy Sheldon L & Loretta | Newcastle, WY 82701 | Oil & Gas Operator | Jun 2025 |
| 19944 | Murphy, Bill W. Operating Co,Inc | Richardson, TX 75080 | Oil & Gas Operator | Jul 2025 |
| 19945 | Murphy, Charles H. | Altoona, KS 66710 | Oil Operator | Jul 2022 |
| 19946 | Murphy, Douglas S. | Sherman, NY 14781 | Gas Operator | Dec 2024 |
| 19947 | Murphy, Earl M. | Madison, KS 66860 | Oil Operator | Jun 1999 |
| 19948 | Murphy, K. P. Oil Operator | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 19949 | Murray Hill Energy, Inc. | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2017 |
| 19950 | Murray J. Evans | | Oil Operator | Mar 1985 |
| 19951 | Murray Oil And Gas LLC | Greensburg, KS 67054 | Oil & Gas Operator | Mar 2025 |
| 19952 | Murray, Tom Enterprises | Monahans, TX 79756 | Oil & Gas Operator | Jul 2025 |
| 19953 | Murray-Teague Assoc. | | Oil Operator | Dec 2005 |
| 19954 | Murtha Contracting Inc. | Conneaut, OH 44030 | Oil & Gas Operator | Dec 2009 |
| 19955 | Murvin & Meier Oil Co. | | Oil & Gas Operator | Dec 2020 |
| 19956 | Musgrave, Dalton | | Oil Operator | Dec 2020 |
| 19957 | Musgrove Casey O | | Oil Operator | Oct 1993 |
| 19958 | Musgrove Energy Inc | Ponca City, OK 74602 | Oil & Gas Operator | Feb 2025 |
| 19959 | Musgrove Petrole | | Oil & Gas Operator | Dec 1996 |
| 19960 | Musgrove Produci | | Oil Operator | May 1989 |
| 19961 | Musgrove Producing | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 19962 | Musgrove, Casey Oil | Ponca City, OK 74602-0391 | Oil & Gas Operator | Jun 2017 |
| 19963 | Muskegon Development Co And Miller Energy Inc An | | Gas Operator | Dec 1997 |
| 19964 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Jul 2025 |
| 19965 | Muskegon Operating Company LLC | | Oil & Gas Operator | Jun 2025 |
| 19966 | Muslow And Parker | | Oil & Gas Operator | Jul 1994 |
| 19967 | Muslow Oil Industries | | Oil Operator | Jan 1995 |
| 19968 | Musselman, Owen & King Oper.,Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 19969 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 19970 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Aug 2024 |
| 19971 | Mustang Drilling, LTD. | Henderson, TX 75653 | Oil & Gas Operator | May 2008 |
| 19972 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Mar 2025 |
| 19973 | Mustang Energy Inc. | Porter, TX 77365 | Oil & Gas Operator | Mar 2008 |
| 19974 | Mustang Energy L C | | Oil & Gas Operator | Jan 2013 |
| 19975 | Mustang Fuel Cor | | Oil & Gas Operator | Dec 1990 |
| 19976 | Mustang Fuel Corp. Of Oklahoma | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2016 |
| 19977 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2025 |
| 19978 | Mustang Gas Products LLC | Oklahoma City, OK 73114-7406 | Oil & Gas Operator | Sep 2022 |
| 19979 | Mustang Holding, LLC (Finnex) | | Oil & Gas Operator | Jun 2025 |
| 19980 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 19981 | Mustang Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2006 |
| 19982 | Mustang Resources LLC | Houston, TX 77256 | Oil & Gas Operator | May 2025 |
| 19983 | Mutch Harry L | | Oil & Gas Operator | Oct 1991 |
| 19984 | Mutch J O | | Gas Operator | Mar 1990 |
| 19985 | Mutch Oil And Gas Development Inc | | Oil & Gas Operator | Dec 2004 |
| 19986 | Mutschelknaus, Clarence W | Salem, WV 26426-0351 | Oil & Gas Operator | Dec 2021 |
| 19987 | Mutual Oil & Gas Co | Akron, OH 44311 | Oil & Gas Operator | Dec 2001 |
| 19988 | Mutz Oil Operator | | Oil Operator | Dec 1988 |
| 19989 | Muzyl Oil Corp | | Oil & Gas Operator | Jun 2025 |
| 19990 | MV Purchasing LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 19991 | MV2 Energy, Inc. | Houston, TX 77069 | Oil & Gas Operator | Jul 2025 |
| 19992 | MVM Resources Louisiana L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 19993 | MVP Production Inc. | | Oil & Gas Operator | Apr 2005 |
| 19994 | MVRC Partnership | Russell, KS 67655 | Oil Operator | Jan 1992 |
| 19995 | MW Oil, Inc | | Oil & Gas Operator | Mar 2025 |
| 19996 | MW Petroleum Corporation | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 19997 | MWJ Producing Company | Midland, TX 79701 | Oil & Gas Operator | Jul 1998 |
| 19998 | MWK Petroleum, LLC | Augusta, KS 67010 | Oil Operator | Mar 2025 |
| 19999 | MWL Energy LLC | Hamlin, TX 79520 | Oil Operator | Jul 2025 |
| 20000 | MWS Producing, Inc. | Stanton, TX 79782 | Oil & Gas Operator | Jul 2025 |