| 9001 | Emlou Oil Co. | Atascosa, TX 78002 | Oil & Gas Operator | Jul 2011 |
| 9002 | Emmert Leo R | Marblehead, OH 43440 | Oil & Gas Operator | Dec 2004 |
| 9003 | Emo Inc | Eufaula, OK 74432-0841 | Oil & Gas Operator | Apr 2020 |
| 9004 | Empire Energies | Sheridan, NY 14135 | Gas Operator | Dec 2024 |
| 9005 | Empire Energy E & P, LLC | Mayville, NY 14757 | Oil & Gas Operator | Mar 2019 |
| 9006 | Empire Explorati | | Oil Operator | Dec 1996 |
| 9007 | Empire Exploration Corp. 1989 | Lebanon, MO 65536 | Oil & Gas Operator | Mar 2003 |
| 9008 | Empire Exploration Inc | Wichita, KS 67202 | Oil & Gas Operator | Jul 1997 |
| 9009 | Empire Land Corporation | New Orleans, LA 70130 | Oil & Gas Operator | Nov 2014 |
| 9010 | Empire Louisiana LLC Of Delaware | | Oil & Gas Operator | Dec 2024 |
| 9011 | Empire New Mexico LLC | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2026 |
| 9012 | Empire North Dakota LLC | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2026 |
| 9013 | Empire Oil & Gas Co. | New Braunfels, TX 78132 | Oil & Gas Operator | Dec 2017 |
| 9014 | Empire Oil & Gas, Inc. | Harrisville, WV 26362 | Oil & Gas Operator | Dec 2021 |
| 9015 | Empire Oil Company | Coppell, TX 75019 | Oil & Gas Operator | Jun 2026 |
| 9016 | Empire Oil Of New Jersey | Post, TX 79356 | Oil & Gas Operator | Jan 1999 |
| 9017 | Empire Operating LLC | Lawton, OK 73501 | Oil Operator | Apr 2026 |
| 9018 | Empire Operating, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2017 |
| 9019 | Empire Petroleum Company | Houston, TX 77044 | Oil Operator | Mar 2011 |
| 9020 | Empire Petroleum Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2005 |
| 9021 | Empire Petroleum LLC | Cottonwood Heights, UT 84121 | Oil & Gas Operator | Jun 2019 |
| 9022 | Empire Texas Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2026 |
| 9023 | Empresa Energy IV, LLC | | Oil & Gas Operator | Aug 2019 |
| 9024 | Empresa Energy, LP | Houston, TX 77024 | Oil & Gas Operator | Jul 2009 |
| 9025 | Empresa Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 9026 | Emre Oil LLC | Moorcroft, WY 82721 | Oil Operator | Mar 2026 |
| 9027 | En Geo, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2026 |
| 9028 | En/Drill America, Inc. | Crystal, MN 55428 | Oil & Gas Operator | Apr 2009 |
| 9029 | Enable Gas Transmission LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 9030 | Enable Midstream Partners, LP | Oklahoma City, OK 73124 | Oil Operator | Sep 2023 |
| 9031 | Enable Oklahoma Intrastate Transmission LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2022 |
| 9032 | Enbridge G & P (East Texas) L.P. | Houston, TX 77056 | Oil & Gas Operator | Sep 2018 |
| 9033 | Enbridge Offshore Pipelines(Seacrest) LP | | Oil Operator | Oct 2009 |
| 9034 | Enbridge P/LS (La Intra.)L.L.C. | | Oil Operator | Oct 2009 |
| 9035 | Enbridge Pipelines (Ne Texas) LP | Houston, TX 77002 | Oil & Gas Operator | Jan 2010 |
| 9036 | Encana Energy Resources Inc | Denver, CO 80202-2828 | Oil & Gas Operator | Feb 2024 |
| 9037 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 9038 | Encina Resources, LLC | Houston, TX 77251 | Oil & Gas Operator | Jun 2026 |
| 9039 | Encino Exploration, Inc. | George West, TX 78022 | Oil & Gas Operator | Jun 2026 |
| 9040 | Encino Operating, LLC | Houston, TX 77008 | Oil & Gas Operator | Jun 2026 |
| 9041 | Enclave Operating, LLC | Shelby, MT 59474 | Oil & Gas Operator | May 2014 |
| 9042 | Enco Exploration Company | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2020 |
| 9043 | Enco Resources Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Jun 2026 |
| 9044 | Encon Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 9045 | Encore Energy Partners Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2015 |
| 9046 | Encore Energy, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 9047 | Encore Operating Company | Denver, CO 80227 | Oil & Gas Operator | Dec 2019 |
| 9048 | Encore Operating Inc | Edmond, OK 73013-5417 | Oil Operator | Mar 2026 |
| 9049 | Encore Operating Kentucky LLC | Bowling Green, KY 42101 | Oil & Gas Operator | Dec 2023 |
| 9050 | Encore Operating Louisiana, LLC | | Oil & Gas Operator | Dec 2010 |
| 9051 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | May 2026 |
| 9052 | Encore Permian Operating, LLC | Uvalde, TX 78801 | Oil & Gas Operator | Jun 2026 |
| 9053 | Encorp, Inc. | Wichita, KS 67206 | Oil Operator | May 2007 |
| 9054 | Encrescent, LLC | Dallas, TX 75205 | Oil & Gas Operator | Jun 2026 |
| 9055 | Enczi Frank | Junction City, OH 43748 | Oil & Gas Operator | Dec 2016 |
| 9056 | End Of The Trails Re | | Oil Operator | Feb 2026 |
| 9057 | Endeavor Drilling, Inc. | Wagoner, OK 74467 | Oil Operator | Mar 2026 |
| 9058 | Endeavor Energy LLC | | Oil Operator | Sep 2023 |
| 9059 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 9060 | Endeavor Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2015 |
| 9061 | Endeavor Natural Gas, LP | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 9062 | Endeavor Production Company | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 9063 | Endeavour Operating Corp | Denver, CO 80202-2000 | Gas Operator | Jun 2014 |
| 9064 | Enderli Oil Company, Inc | Highlands, TX 77562 | Oil & Gas Operator | Aug 2003 |
| 9065 | Endevco Eureka LLC | Oklahoma City, OK 73102-9211 | Oil & Gas Operator | Apr 2014 |
| 9066 | Endicott Melvin F | Ponca City, OK 74601 | Oil & Gas Operator | Apr 2001 |
| 9067 | Endura Energy LLC | Lubbock, TX 79464 | Oil & Gas Operator | Jan 2025 |
| 9068 | Endurance Oil & Gas, Inc. | Minden, LA 71055 | Oil & Gas Operator | Jun 2026 |
| 9069 | Endurance Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 9070 | Endurance Resources LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2017 |
| 9071 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Apr 2026 |
| 9072 | Enduro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2018 |
| 9073 | Enercap Corporation | Kingwood, TX 77325 | Oil & Gas Operator | Aug 2003 |
| 9074 | Enerco Energy Corporation | Norman, OK 73069-6643 | Oil & Gas Operator | Apr 2020 |
| 9075 | Enerco Exploration & MGMT. Co. | | Oil & Gas Operator | Aug 1981 |
| 9076 | Enerco Operating Corporation | Dallas, TX 75240 | Oil & Gas Operator | Jan 2025 |
| 9077 | Enercorp Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 1993 |
| 9078 | Enerdril Corporation | Moran, TX 76464 | Gas Operator | Dec 2015 |
| 9079 | Enerdyne, LLC | Albuquerque, NM 87123 | Oil & Gas Operator | Apr 2026 |
| 9080 | Enerex Limited Liability Co | Craig, CO 81625 | Oil & Gas Operator | Sep 2025 |
| 9081 | Enerex Supply, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 1993 |
| 9082 | Enerfin Field Services LLC | Houston, TX 77077 | Oil Operator | Nov 2024 |
| 9083 | Enerfin Gathering-East LLC | Houston, TX 77077 | Oil & Gas Operator | Nov 2022 |
| 9084 | Enerfin Resources I Limited Partnership | Houston, TX 77077-2386 | Oil & Gas Operator | Apr 2023 |
| 9085 | Enerfin Resources II-92 L.P. | Houston, TX 77077 | Oil & Gas Operator | Sep 2025 |
| 9086 | Enerfin Resources Northwest Limited Partnership | | Oil & Gas Operator | Jan 2022 |
| 9087 | Energas Corporation | Oklahoma City, OK 73105 | Oil & Gas Operator | Jul 2025 |
| 9088 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 9089 | Energen Resources Maq Inc | Birmingham, AL 35203 | Oil & Gas Operator | Sep 2000 |
| 9090 | Energetics Inc | Englewood, CO 80155 | Oil & Gas Operator | Aug 1985 |
| 9091 | Energex Corp | Springfield, MO 65807 | Oil & Gas Operator | Apr 2026 |
| 9092 | Energex Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2026 |
| 9093 | Energex Petroleum Inc | | Oil Operator | Sep 2019 |
| 9094 | Energex, LLC | Scottsdale, AZ 85255 | Oil & Gas Operator | Sep 2024 |
| 9095 | Energon Oil & Gas Inc. | Odessa, TX 79762 | Oil & Gas Operator | Aug 2003 |
| 9096 | Energon Oil, Inc. | Amarillo, TX 79114 | Oil & Gas Operator | Jun 2026 |
| 9097 | Energon3 | Rowlett, TX 75089 | Oil Operator | Jun 2026 |
| 9098 | Energy & Expl. PRTNRS Oper., LP | Fort Worth, TX 76147 | Oil & Gas Operator | Oct 2016 |
| 9099 | Energy + Savings, L.L.C. | Alamo, TX 78516 | Oil & Gas Operator | Jan 2008 |
| 9100 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | Jun 2026 |