| 1101 | Evergreen Operating Company | Denver, CO 80202 | Oil & Gas Operator | Apr 1996 |
| 1102 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 1103 | Evergreen Resource Co | Warren, PA 16365-4321 | Oil & Gas Operator | Dec 2024 |
| 1104 | Everman, Henry G. | Dansville, NY 14437 | Gas Operator | Dec 2024 |
| 1105 | Everquest Energy Corporation | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jul 2025 |
| 1106 | Evertson Oil Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Sep 2001 |
| 1107 | Evertson Operating Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Nov 2022 |
| 1108 | Evinger, Ernest E. | Midland, TX 79705 | Oil & Gas Operator | Mar 2002 |
| 1109 | Evolution Energy LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2025 |
| 1110 | Evolution Oil & | | Oil & Gas Operator | Apr 1993 |
| 1111 | Evolution Operating Co., Inc. | Houston, TX 77079 | Oil & Gas Operator | Jul 2025 |
| 1112 | Evolution Resources, LLC | Houston, TX 77070 | Oil & Gas Operator | Jul 2025 |
| 1113 | Ew Carter Oil Co;Inc | | Oil & Gas Operator | Apr 2025 |
| 1114 | Ewm Services, LLC | Morganfield, KY 42437 | Oil Operator | Dec 2022 |
| 1115 | Ewsc Inc | Kenosha, WI 53142-3775 | Oil & Gas Operator | Apr 2020 |
| 1116 | Ewt Operating Company | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 1117 | Ex-Cel Resources, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 1118 | Exaro Energy II, LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 1119 | Excalibur E & P, LLC | Johnson City, TX 78636 | Oil & Gas Operator | Jul 2025 |
| 1120 | Excalibur Exploration Inc | Greentown, OH 44630 | Oil & Gas Operator | Dec 2020 |
| 1121 | Excalibur Operating, LLC | | Oil & Gas Operator | Nov 2024 |
| 1122 | Excalibur Prod C | | Oil & Gas Operator | Jun 1995 |
| 1123 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Mar 2025 |
| 1124 | Excalibur Resources LLC | Houston, TX 77002-5220 | Oil & Gas Operator | Apr 2025 |
| 1125 | Excalibur Resources, Inc. | | Oil & Gas Operator | Apr 1986 |
| 1126 | Exceed Petroleum LLC | Houston, TX 77070 | Oil & Gas Operator | Jul 2025 |
| 1127 | Excel Energy Co. | Coahoma, TX 79511 | Oil & Gas Operator | Jul 2025 |
| 1128 | Excel Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jul 2025 |
| 1129 | Excel Oil & Gas L.L.C. | Bucyrus, KS 66013 | Oil Operator | Mar 2025 |
| 1130 | Excel Oil & Gas, Inc. | Waxahachie, TX 75168 | Oil & Gas Operator | Jul 2025 |
| 1131 | Excel Operating Corporation | | Oil & Gas Operator | Dec 2024 |
| 1132 | Excel Operating Inc | Dallas, TX 75234-7300 | Oil & Gas Operator | Jun 2022 |
| 1133 | Excel Production Inc | Lubbock, TX 79424-2341 | Oil Operator | Apr 2020 |
| 1134 | Excel Royalty Company, LLC | | Oil Operator | Jun 2022 |
| 1135 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 1136 | Excelsior Oil Corporation | | Oil & Gas Operator | May 1985 |
| 1137 | Exchange Avenue Production Co. | Weatherford, TX 76086 | Oil & Gas Operator | Sep 2021 |
| 1138 | Exchange Expl & Prodn Co | | Oil Operator | Oct 2023 |
| 1139 | Exchange Exploration & Production Co. | Dallas, TX 75219 | Oil & Gas Operator | May 2025 |
| 1140 | Exchange Oil & Gas Company | | Oil & Gas Operator | Oct 1996 |
| 1141 | Exchange Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1987 |
| 1142 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 1143 | Exco Operating Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 1144 | Exco Partners Operating PTSHP LP | Dallas, TX 75251 | Oil & Gas Operator | Jan 2009 |
| 1145 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 1146 | Exco Resources (Pa), LLC | Dallas, TX 75251-2224 | Oil & Gas Operator | May 2025 |
| 1147 | Exco Resources (WV), Inc. | | Oil & Gas Operator | Dec 2020 |
| 1148 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 1149 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |
| 1150 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 1151 | Executive Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Jul 2025 |
| 1152 | Exeter Drilling Company | Denver, CO 80217 | Oil & Gas Operator | Sep 1997 |
| 1153 | Exeter Exploration Co. | | Oil & Gas Operator | Aug 1985 |
| 1154 | Exit Inc | | Oil Operator | Dec 1983 |
| 1155 | Exit Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2025 |
| 1156 | Exl Petroleum Operating Inc. | Midland, TX 79705 | Oil & Gas Operator | Feb 2020 |
| 1157 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 1158 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 1159 | Exley Oil & Gas Corp | Lemont, PA 16851-0425 | Oil & Gas Operator | Dec 2019 |
| 1160 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 1161 | Exodus Energy, Inc. | | Oil & Gas Operator | Jul 2018 |
| 1162 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 1163 | Exok, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2025 |
| 1164 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 1165 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Jul 2025 |
| 1166 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 1167 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2024 |
| 1168 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 1169 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 1170 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 1171 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 1172 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 1173 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 1174 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 1175 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 1176 | Exploration Energy Inc | Cortland, OH 44410 | Oil & Gas Operator | Dec 2009 |
| 1177 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 1178 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Jul 2025 |
| 1179 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 1180 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 1181 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2025 |
| 1182 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil Operator | Jul 2025 |
| 1183 | Express Oil & Gas LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
| 1184 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Jul 2025 |
| 1185 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Jul 2025 |
| 1186 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Jul 2025 |
| 1187 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2025 |
| 1188 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 1189 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 1190 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 1191 | Extreme Energy Co | | Oil & Gas Operator | Mar 2025 |
| 1192 | Exxcel Operating Company | San Antonio, TX 78227 | Oil & Gas Operator | Jul 2025 |
| 1193 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 1194 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2023 |
| 1195 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 1196 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 1197 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 1198 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 1199 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 1200 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |