| 1101 | Exchange Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1987 |
| 1102 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 1103 | Exco Operating Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Jun 2026 |
| 1104 | Exco Partners Operating PTSHP LP | Dallas, TX 75251 | Oil & Gas Operator | Jan 2009 |
| 1105 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 1106 | Exco Resources (Pa), LLC | Montoursville, PA 17754-2235 | Oil & Gas Operator | Mar 2026 |
| 1107 | Exco Resources (WV), Inc. | | Oil & Gas Operator | Dec 2020 |
| 1108 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Mar 2026 |
| 1109 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |
| 1110 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 1111 | Executive Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Jun 2026 |
| 1112 | Exeter Drilling Company | Denver, CO 80217 | Oil & Gas Operator | Sep 1997 |
| 1113 | Exeter Exploration Co. | | Oil & Gas Operator | Aug 1985 |
| 1114 | Exit Inc | | Oil Operator | Dec 1983 |
| 1115 | Exit Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jun 2026 |
| 1116 | Exl Petroleum Operating Inc. | Midland, TX 79705 | Oil & Gas Operator | Feb 2020 |
| 1117 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 1118 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 1119 | Exley Oil & Gas Corp | | Oil & Gas Operator | Dec 2019 |
| 1120 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 1121 | Exodus Energy, Inc. | Huntington Beach, CA 92615 | Oil & Gas Operator | Jul 2018 |
| 1122 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 1123 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Mar 2026 |
| 1124 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 1125 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Jun 2026 |
| 1126 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 1127 | Exotic Oil & Gas LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2025 |
| 1128 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 1129 | Expand Oper LLC | Morgantown, WV 26508 | Oil & Gas Operator | Mar 2026 |
| 1130 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 1131 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 1132 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 1133 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jun 2026 |
| 1134 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 1135 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 1136 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 1137 | Exploration Energy Inc | Cortland, OH 44410 | Oil & Gas Operator | Dec 2009 |
| 1138 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 1139 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2026 |
| 1140 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 1141 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 1142 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Jun 2026 |
| 1143 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil & Gas Operator | Jun 2026 |
| 1144 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Apr 2026 |
| 1145 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Jun 2026 |
| 1146 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Jun 2026 |
| 1147 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Jun 2026 |
| 1148 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Jun 2026 |
| 1149 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 1150 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jun 2026 |
| 1151 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2026 |
| 1152 | Extreme Energy Co | | Oil & Gas Operator | Feb 2026 |
| 1153 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Jun 2026 |
| 1154 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2024 |
| 1155 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 1156 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 1157 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jan 2026 |
| 1158 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 1159 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 1160 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Jun 2026 |
| 1161 | Exxonmobil Alaska Production Inc. | | Oil & Gas Operator | Oct 2021 |
| 1162 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2026 |
| 1163 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Jun 2026 |
| 1164 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 1165 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 1166 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Apr 2026 |
| 1167 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 1168 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2025 |
| 1169 | Ez Oil Corp | Cushing, OK 74023 | Oil & Gas Operator | Mar 2026 |
| 1170 | Ezekiel Exploration, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Apr 2026 |