| 201 | Ecco | | Oil Operator | Apr 2026 |
| 202 | Ech Production LLC | Abilene, TX 79608 | Oil Operator | Sep 2026 |
| 203 | Echelon Land & Exploration Co. | Havana, FL 32333 | Oil Operator | Apr 1997 |
| 204 | Echo Drilling Inc | Dover, OH 43622 | Oil & Gas Operator | Dec 2025 |
| 205 | Echo E & P LLC | Oklahoma City, OK 73102-6439 | Oil & Gas Operator | May 2026 |
| 206 | Echo Energy Partners, LLC | Houston, TX 77027 | Oil Operator | Sep 2026 |
| 207 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 208 | Echols & Assoc. | | Oil Operator | Apr 1986 |
| 209 | Echols & Gray Bros. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 210 | Echols Oil Company | Caddo, TX 76429 | Oil & Gas Operator | Jan 2012 |
| 211 | Echols Oil Company, L.L.C. | Caddo, TX 76429 | Oil & Gas Operator | Sep 2026 |
| 212 | Eck Petroleum LLC | Kingman, KS 67068 | Oil Operator | Nov 2019 |
| 213 | Eckard Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2026 |
| 214 | Eclipse Oil & Gas, Inc. | Midland, TX 79703 | Oil & Gas Operator | Sep 2026 |
| 215 | Eclipse Petroleum | | Oil & Gas Operator | Aug 1991 |
| 216 | Eclipse Petroleum Corporation | La Grange, TX 78945 | Oil & Gas Operator | Aug 2003 |
| 217 | Eclipse Production Co | | Oil Operator | Nov 2005 |
| 218 | Eclipse Resources I LP | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 219 | Eclipse Resources-Ohio LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2020 |
| 220 | Eclipse Services, Inc. * | La Grange, TX 78945 | Oil & Gas Operator | Jul 2003 |
| 221 | Ecm Exploration Inc | Punxsutawney, PA 15767-6601 | Gas Operator | Dec 2025 |
| 222 | Eco Power Crypto LLC | Katy, TX 77494 | Oil & Gas Operator | Jun 2026 |
| 223 | Eco Production LLC | Wooster, OH 44691-4683 | Oil & Gas Operator | Dec 2025 |
| 224 | Ecological Energy, Inc. | Morgantown, WV 265070000 | Oil & Gas Operator | Dec 2021 |
| 225 | Ecology Auto Wrecking | | Oil Operator | Dec 2005 |
| 226 | Ecoserv Environmental SVCS, LLC | Abbeville, LA 70510 | Oil Operator | Sep 2026 |
| 227 | Ed Broome, Inc. | Glenville, WV 26351 | Oil & Gas Operator | Dec 2021 |
| 228 | Ed I. Estis | | Oil & Gas Operator | Sep 1998 |
| 229 | Ed Shea | | Oil Operator | Sep 1990 |
| 230 | Edco Drilling & Producing | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2006 |
| 231 | Edco Energy, Inc. | Austin, TX 78738 | Oil & Gas Operator | May 2003 |
| 232 | Edco Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Mar 2005 |
| 233 | Eddie Mayo | | Oil Operator | Jun 2006 |
| 234 | Eddie'S Royalties, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Sep 2026 |
| 235 | Eddie'S Submersible Service Inc | Shawnee, OK 74801-5047 | Oil & Gas Operator | Mar 2015 |
| 236 | Eddings, Steve L | | Oil & Gas Operator | Jul 2022 |
| 237 | Eddleman, M. W. | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 238 | Eddy Enterprises, Inc. | | Oil & Gas Operator | Sep 2023 |
| 239 | Eddy, Dale E. | Andover, NY 14806 | Oil & Gas Operator | Dec 2025 |
| 240 | Eden Central School District | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 241 | Eden VFW Post No 8265 | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 242 | Edf Trading Resources, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2015 |
| 243 | Edgar, Verlon | Belle Chasse, LA 70037 | Oil & Gas Operator | Feb 1998 |
| 244 | Edge Barnett Operating Comp LLC | Fort Worth, TX 76107 | Gas Operator | Nov 2013 |
| 245 | Edge Energy II LLC | Golden, CO 80401 | Oil & Gas Operator | Nov 2025 |
| 246 | Edge Energy LLC | | Oil & Gas Operator | Oct 2025 |
| 247 | Edge Exploration, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2006 |
| 248 | Edge Oil & Gas Properties | Archer City, TX 76351 | Oil & Gas Operator | Sep 2026 |
| 249 | Edge Oil And Gas, LLC | Abilene, TX 79602 | Oil Operator | Sep 2026 |
| 250 | Edge Oil Company Inc | Cleveland, OK 74020-0284 | Oil & Gas Operator | Feb 2026 |
| 251 | Edge Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 1999 |
| 252 | Edge Petroleum Oper. Co., Inc. | Houston, TX 77042 | Oil & Gas Operator | Nov 2010 |
| 253 | Edge Resources Operating, L.L.C. | Fort Worth, TX 76107 | Gas Operator | Jan 2020 |
| 254 | Edge, Fred Well Service Co. | Archer City, TX 76351 | Oil & Gas Operator | May 2024 |
| 255 | Edgewater Oil Co. Inc. | | Oil & Gas Operator | Jul 1995 |
| 256 | Edgewood Exploration Inc. | | Oil & Gas Operator | Mar 1993 |
| 257 | Edgington, Jimmy C | MT Carmel, IL 62863 | Oil Operator | Dec 2021 |
| 258 | Edinburgh Energy Partners, LLC | Midland, TX 79707 | Oil & Gas Operator | Sep 2026 |
| 259 | Edinger Engineering, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2026 |
| 260 | Edinger Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2007 |
| 261 | Edinger Incorpor | | Oil Operator | Oct 1986 |
| 262 | Edington Oil Company | Albany, TX 76430 | Oil & Gas Operator | Aug 2006 |
| 263 | Edison Beneficial Reuse | | Oil & Gas Operator | Jul 2026 |
| 264 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Apr 2026 |
| 265 | Edisto Resources Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 266 | Edler, John W. And Susan | Irving, NY 14081 | Gas Operator | Dec 2025 |
| 267 | Edmar Company, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 268 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 269 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2026 |
| 270 | Edmonds Management Company | Richardson, TX 75081 | Oil & Gas Operator | Mar 2015 |
| 271 | Edmonds, Karl F. Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2005 |
| 272 | Edmondson Oil & Gas | Ballinger, TX 76821 | Oil & Gas Operator | Sep 2026 |
| 273 | Edp Management Company | Houston, TX 77056 | Oil & Gas Operator | Jul 2018 |
| 274 | Edward Mike Davis | Las Vegas, NV 89107 | Oil & Gas Operator | Feb 2003 |
| 275 | Edward Mike Davis, L.L.C. | | Oil & Gas Operator | Dec 2006 |
| 276 | Edward Oil Company | Youngsville, PA 16371 | Oil & Gas Operator | Nov 2024 |
| 277 | Edwards & Leach Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2005 |
| 278 | Edwards Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 279 | Edwards Johnny E | Drumright, OK 74030 | Oil Operator | Apr 2011 |
| 280 | Edwards Jr L A | Duncan, OK 73534-1348 | Oil & Gas Operator | Sep 1992 |
| 281 | Edwards Lease,The | | Oil Operator | Oct 2016 |
| 282 | Edwards Oil & Gas Company | Oklahoma City, OK 73156-0386 | Oil & Gas Operator | Mar 2015 |
| 283 | Edwards Oil Inco | | Oil Operator | Oct 1984 |
| 284 | Edwards Oil Properties | | Oil Operator | Dec 2009 |
| 285 | Edwards Petroleum Company | Houston, TX 77092 | Oil & Gas Operator | Aug 2003 |
| 286 | Edwards Producing Co.,Inc. | | Oil Operator | Jun 1987 |
| 287 | Edwards Production Inc | Healdton, OK 73438-6221 | Oil & Gas Operator | Mar 2015 |
| 288 | Edwards Roy & Co Inc | Edmond, OK 73013-1354 | Oil & Gas Operator | Feb 2012 |
| 289 | Edwards Timothy D | Broken Arrow, OK 74014-4052 | Oil & Gas Operator | Apr 2015 |
| 290 | Edwards, Gus Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2004 |
| 291 | Edwards, James | Albany, TX 76430 | Oil & Gas Operator | Sep 2000 |
| 292 | Edwards-Foster, Inc. | Midland, TX 79708 | Oil & Gas Operator | Aug 1996 |
| 293 | Edwin L Cox & Berry R Cox-Eni | | Oil & Gas Operator | May 1986 |
| 294 | Edwin L Cox-Michael Halbouty | | Oil & Gas Operator | Jun 1986 |
| 295 | Edwin L. Cox | | Oil & Gas Operator | May 1986 |
| 296 | Edwin L. Cox & Berry R. Cox | | Oil & Gas Operator | Jun 1986 |
| 297 | Eec Inc | Norman, OK 73072 | Oil & Gas Operator | Jun 2026 |
| 298 | Eei Inc | MT Pleasant, MI 48858 | Oil & Gas Operator | Dec 1990 |
| 299 | Eei Operating Inc. | Plano, TX 75093 | Oil & Gas Operator | May 2015 |
| 300 | Eex Corporation | Houston, TX 77060 | Oil & Gas Operator | Feb 2000 |