| 9001 | Ego Operating LLC | Boca Raton, FL 33431 | Oil Operator | Dec 2019 |
| 9002 | Egolf Operating Company | Oklahoma City, OK 73114-7899 | Oil & Gas Operator | Apr 1998 |
| 9003 | Egret Operating Company | Muskogee, OK 74401 | Oil & Gas Operator | Apr 2025 |
| 9004 | Ehb Oil Company | | Oil Operator | Dec 2001 |
| 9005 | Ehrlich, Mitchell | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 9006 | Ehvi Exploration LLC | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 9007 | Eichenber A H Co | Tulsa, OK 74105 | Oil & Gas Operator | Oct 2002 |
| 9008 | Eidos Energy, Inc. | | Oil & Gas Operator | Oct 2017 |
| 9009 | Eig Petroleum LLC | Asheville, NC 28803-2908 | Oil Operator | Aug 2015 |
| 9010 | Eighty-Six Oil Company, Inc. | Luling, TX 78648 | Oil & Gas Operator | Jul 2025 |
| 9011 | Einink, Mark B. | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 9012 | Eise Oil, Inc. | San Antonio, TX 78213 | Oil Operator | Jul 2025 |
| 9013 | Eishen, Rosalie; Eishen, Eric; And Pray, Leonore | | Oil & Gas Operator | Dec 2024 |
| 9014 | Eitel Energy, LLC | Farlington, KS 66734 | Oil Operator | Mar 2025 |
| 9015 | Ej Brumage & Ra Pultorak | Waynesburg, PA 15370-2434 | Gas Operator | Dec 2018 |
| 9016 | Ekg Operating Inc | Seminole, OK 74818-1028 | Oil & Gas Operator | Nov 2015 |
| 9017 | El Campo Operating, LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2011 |
| 9018 | El Chjon Gas Com | | Gas Operator | May 1988 |
| 9019 | El Coqui' Oil Company | Tussy, OK 73088 | Oil & Gas Operator | Oct 2009 |
| 9020 | El Dorado Exploration Co. | | Oil Operator | Dec 1999 |
| 9021 | El Dorado Gas & Oil, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2025 |
| 9022 | El Dorado Resources Inc. | Waco, TX 76710 | Oil & Gas Operator | Oct 2009 |
| 9023 | El Indio Energy LLC | Austin, TX 78746 | Oil Operator | Mar 2025 |
| 9024 | El Pache Energy Inc | Duncan, OK 73533 | Oil & Gas Operator | Aug 2017 |
| 9025 | El Pamco Inc | Albuquerque, NM 87191 | Gas Operator | Mar 2020 |
| 9026 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 9027 | El Paso E&P Zapata, L.P. | Houston, TX 77002 | Oil & Gas Operator | Dec 2010 |
| 9028 | El Paso Energy Raton LLC | | Gas Operator | Sep 2008 |
| 9029 | El Paso Exploration Company | | Oil & Gas Operator | Jul 1985 |
| 9030 | El Paso Field Services Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 9031 | El Paso Gas Marketing | Unknown, NM 99999 | Oil & Gas Operator | Feb 1997 |
| 9032 | El Paso Natural Gas Company | El Paso, TX 79978 | Oil & Gas Operator | Apr 2013 |
| 9033 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 9034 | El Paso Production Gom, Inc. | | Oil & Gas Operator | Nov 2005 |
| 9035 | El Paso Production Oil & Gas Co. | Houston, TX 77252 | Oil & Gas Operator | Jul 2025 |
| 9036 | El Ran, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Jul 2025 |
| 9037 | El Reno Energy, LLC | Granbury, TX 76048 | Oil & Gas Operator | Jul 2025 |
| 9038 | El Segundo Oil LLC | | Oil Operator | Apr 2025 |
| 9039 | El Toro Oil Co. & Flagg Resc. | | Oil & Gas Operator | May 1993 |
| 9040 | El Toro Production Co., Inc. | | Oil & Gas Operator | Jan 2016 |
| 9041 | El Toro Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 9042 | El Tres Exploration | Houston, TX 77098 | Oil & Gas Operator | Mar 2008 |
| 9043 | El Tres Petr. Corp. | | Oil & Gas Operator | Jan 1984 |
| 9044 | El-Kan Exploration | Garfield, KS 67529 | Oil Operator | Jul 1997 |
| 9045 | El-Oil, LTD. | | Oil & Gas Operator | Nov 2024 |
| 9046 | Elad Petroleum Corporation | | Oil Operator | Jun 2005 |
| 9047 | Elahs Gas Co., Inc. | | Oil & Gas Operator | Dec 2021 |
| 9048 | Elam, Jack G. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |
| 9049 | Elam, Jack G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 9050 | Elan Energy Inc | Toledo, OH 43604-1207 | Oil & Gas Operator | Dec 1990 |
| 9051 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | May 2025 |
| 9052 | Elb Enterprise LLC | | Oil Operator | Mar 2025 |
| 9053 | Elba Oil Company LLC | Macksburg, OH 45746 | Oil Operator | Dec 2024 |
| 9054 | Elco Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2014 |
| 9055 | Elco Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Jul 2025 |
| 9056 | Elco Resources LLC | Owasso, OK 74055-7575 | Oil & Gas Operator | May 2025 |
| 9057 | Elder & Vaughn Inc | Oklahoma City, OK 73154-0938 | Oil & Gas Operator | Mar 2008 |
| 9058 | Elder Oil & Gas Co | Parker, PA 16049-6426 | Oil & Gas Operator | Dec 2024 |
| 9059 | Elder Oil Co. | West Union, WV 26456 | Oil & Gas Operator | Dec 2021 |
| 9060 | Eldon Oil Co. | Three Rivers, TX 78071 | Oil & Gas Operator | Jul 2025 |
| 9061 | Eldon Radke | | Oil Operator | May 2001 |
| 9062 | Eldorado Gas Inc. | | Oil & Gas Operator | May 1986 |
| 9063 | Eldorado Oil And Gas, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Nov 1995 |
| 9064 | Eldorado Operating Co. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2004 |
| 9065 | Eldred Prod And Consulting, LLC | Nocona, TX 76255 | Oil Operator | Jul 2025 |
| 9066 | Elec Materials Co | North East, PA 16428-1539 | Gas Operator | Dec 1994 |
| 9067 | Electragas, Inc. | Houston, TX 77064 | Oil Operator | Jul 2025 |
| 9068 | Elek Aaron III | | Oil Operator | Jul 2005 |
| 9069 | Elek Aaron III Estate | | Oil Operator | Feb 2015 |
| 9070 | Element Petro Operating II, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2016 |
| 9071 | Element Petroleum Op III, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 9072 | Element Petroleum Operating IV, LLC | Midland, TX 79710 | Oil Operator | Jul 2025 |
| 9073 | Element Petroleum Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2015 |
| 9074 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 9075 | Eleon Operators, LLC | Katy, TX 77494 | Oil & Gas Operator | Jul 2025 |
| 9076 | Elephant Exploration Inc. | Hartville, OH 44632 | Oil & Gas Operator | Dec 2024 |
| 9077 | Elephant Oil & Gas, LLC | Dallas, TX 75204 | Oil & Gas Operator | Nov 2015 |
| 9078 | Elephant Operating LLC | Dallas, TX 75204 | Oil & Gas Operator | May 2025 |
| 9079 | Eleuterius Company | | Oil Operator | Jan 1983 |
| 9080 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Mar 2025 |
| 9081 | Elevation Resources LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 9082 | Eleven Eleven Investments, LLC | Hays, KS 67601 | Oil Operator | Feb 2025 |
| 9083 | Eleven K Oil & Gas LLC | Cushing, OK 74023 | Oil Operator | May 2025 |
| 9084 | Elf Aquitaine Inc | Houston, TX 77002 | Oil & Gas Operator | May 1991 |
| 9085 | Elf Aquitaine Operating, Inc. | | Oil & Gas Operator | Jan 1992 |
| 9086 | Elfco, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Jun 1996 |
| 9087 | Elgie Company, Inc. | | Oil & Gas Operator | Aug 1993 |
| 9088 | Elgin Construction Company Inc | Elgin, OK 73538-0370 | Oil Operator | Apr 2025 |
| 9089 | Elgin Energy Corp. | | Oil Operator | May 1995 |
| 9090 | Elh Energy LLC | Lubbock, TX 79464 | Oil & Gas Operator | May 2025 |
| 9091 | Eli Rebich | | Oil & Gas Operator | Dec 1986 |
| 9092 | Elint Operating Inc | Oklahoma City, OK 73106 | Oil & Gas Operator | May 1995 |
| 9093 | Elison Oil & Gas, Inc. | Montgomery, TX 77356 | Oil & Gas Operator | Oct 1999 |
| 9094 | Elite Group LLC | | Oil & Gas Operator | Nov 2024 |
| 9095 | Elite Resources Inc | Cleveland, OK 74020 | Oil & Gas Operator | May 2025 |
| 9096 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Apr 2025 |
| 9097 | Elizabeth Oil Company | | Oil Operator | Oct 1999 |
| 9098 | Elk City Oil Field Service | Elk City, KS 67344 | Oil Operator | Oct 1996 |
| 9099 | Elk Energy Corporation | Denver, CO 80218 | Oil & Gas Operator | Mar 2008 |
| 9100 | Elk Energy Holdings LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2025 |