| 1101 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 1102 | Exley Oil & Gas Corp | Lemont, PA 16851-0425 | Oil & Gas Operator | Dec 2019 |
| 1103 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 1104 | Exodus Energy, Inc. | Huntington Beach, CA 92615 | Oil & Gas Operator | Jul 2018 |
| 1105 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 1106 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 1107 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 1108 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Apr 2026 |
| 1109 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 1110 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2025 |
| 1111 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 1112 | Expand Oper LLC | Morgantown, WV 26508 | Oil & Gas Operator | Jan 2026 |
| 1113 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 1114 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 1115 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 1116 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2026 |
| 1117 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 1118 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 1119 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 1120 | Exploration Energy Inc | Cortland, OH 44410 | Oil & Gas Operator | Dec 2009 |
| 1121 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 1122 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2026 |
| 1123 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 1124 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 1125 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2026 |
| 1126 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil & Gas Operator | Apr 2026 |
| 1127 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Jan 2026 |
| 1128 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Apr 2026 |
| 1129 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Apr 2026 |
| 1130 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 2026 |
| 1131 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2026 |
| 1132 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 1133 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 1134 | Extraction Oil & Gas LLC | | Oil & Gas Operator | Jan 2026 |
| 1135 | Extreme Energy Co | | Oil & Gas Operator | Dec 2025 |
| 1136 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Apr 2026 |
| 1137 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2024 |
| 1138 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 1139 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 1140 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Apr 2026 |
| 1141 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 1142 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 1143 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2026 |
| 1144 | Exxonmobil Alaska Production Inc. | | Oil & Gas Operator | Oct 2021 |
| 1145 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Dec 2025 |
| 1146 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2026 |
| 1147 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 1148 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 1149 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2025 |
| 1150 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 1151 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2025 |
| 1152 | Ezekiel Exploration, LLC | Blanchard, OK 73010 | Oil Operator | Jan 2026 |