| 301 | Geist Oil Operations | | Oil Operator | Feb 2026 |
| 302 | Geitgey Donald W Jr | N Canton, OH 44721 | Oil & Gas Operator | Dec 2024 |
| 303 | Gel Oil & Gas Inc | Wetumka, OK 74883-6238 | Oil & Gas Operator | Jul 2016 |
| 304 | Gel Petroleum, Inc. | Bay City, TX 77414 | Oil & Gas Operator | Sep 2026 |
| 305 | Gelfond, Daniel | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 306 | Gem Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2002 |
| 307 | Gemak Exp Inc | Dayton, OH 45414 | Oil Operator | Dec 1998 |
| 308 | Gemarmi Inc. | Cypress, TX 77433 | Oil & Gas Operator | Sep 2026 |
| 309 | Gemini Corporati | | Oil Operator | Mar 1986 |
| 310 | Gemini Energy Company | Kilgore, TX 75663 | Oil Operator | Sep 2026 |
| 311 | Gemini Energy, Inc. | Kerens, TX 75144 | Oil Operator | Sep 2026 |
| 312 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 313 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 314 | Gemini Explorations, Inc. | | Oil & Gas Operator | Jan 2025 |
| 315 | Gemini Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 316 | Gen-Dor Oil Co. | | Oil & Gas Operator | Nov 2009 |
| 317 | Gen-Dor Oil Comp | | Oil & Gas Operator | Nov 1994 |
| 318 | Gen-Nan Resources & Equip., Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 319 | Gen-Nan Resources & Equip., L.P. | Midland, TX 79702 | Oil & Gas Operator | Jan 2008 |
| 320 | Gen-Sher | Bluegrove, TX 76352 | Oil & Gas Operator | Feb 2005 |
| 321 | Gen-Sher L.L.P. | Bluegrove, TX 76352 | Oil & Gas Operator | Sep 2026 |
| 322 | Gene Cook Inc | Woodward, OK 73801 | Oil & Gas Operator | Jun 2026 |
| 323 | Gene Karlin Company | | Oil Operator | Nov 2015 |
| 324 | Gene McCutchin | | Gas Operator | Aug 1999 |
| 325 | Genecov Group, Inc. The | Tyler, TX 75713 | Oil & Gas Operator | Dec 2002 |
| 326 | Genepa Petroleum Company | Spring, TX 77379 | Oil & Gas Operator | Sep 2026 |
| 327 | General American Oil Co Of Texas | | Oil & Gas Operator | Mar 1983 |
| 328 | General American Oil Co Of TX | Dallas, TX 75206 | Oil & Gas Operator | Jun 1983 |
| 329 | General Atlantic | | Gas Operator | Jan 1970 |
| 330 | General Atlantic Energy Corp. | | Oil & Gas Operator | Nov 1988 |
| 331 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 332 | General Crude Oil Co | Houston, TX 77005 | Oil & Gas Operator | Dec 1979 |
| 333 | General Crude Oil Co Etal | | Oil & Gas Operator | Aug 1979 |
| 334 | General Electric Company | Erie, PA 16531-0001 | Oil & Gas Operator | Sep 1987 |
| 335 | General Energy Resources And Technology Corp | | Oil & Gas Operator | Jan 1998 |
| 336 | General Energy, Inc. | | Oil Operator | Dec 1983 |
| 337 | General Exploration Inc | | Oil & Gas Operator | Aug 2001 |
| 338 | General Minerals Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | Dec 2015 |
| 339 | General New Mexico Inc. | Artesia, NM 882110385 | Oil Operator | Apr 1998 |
| 340 | General Oil And Gas Co. | | Oil Operator | Nov 1999 |
| 341 | General Oil Comp | | Oil & Gas Operator | Nov 1993 |
| 342 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Sep 2026 |
| 343 | General Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 344 | General Petroleu | | Oil Operator | Nov 1988 |
| 345 | General Petroleum Corp | Sand Springs, OK 74063-6646 | Oil & Gas Operator | Jul 2015 |
| 346 | General Producing Co | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 347 | General Production Oil LLC | | Oil Operator | Jun 2026 |
| 348 | General Trading Co Inc | Carrollton, TX 75011-2309 | Oil Operator | Jul 2017 |
| 349 | Genesis Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 1995 |
| 350 | Genesis Exploration & Production Co., LLC | | Oil & Gas Operator | Dec 2019 |
| 351 | Genesis Exploration LLC | FT Stockton, TX 79735 | Oil & Gas Operator | Sep 2026 |
| 352 | Genesis Gas & Oil Colorado LLC | | Oil & Gas Operator | Dec 2023 |
| 353 | Genesis Gas & Oil LLC | Kansas City, MO 64108 | Oil & Gas Operator | Aug 2011 |
| 354 | Genesis Inc | Seminole, OK 74818-1647 | Oil & Gas Operator | Sep 2014 |
| 355 | Genesis Petroleum Corporation | Fort Worth, TX 76116-7151 | Oil & Gas Operator | Mar 2011 |
| 356 | Genesis Petroleum LLC | Andrews, TX 79714 | Oil & Gas Operator | May 2026 |
| 357 | Genesis Producing Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2007 |
| 358 | Genesis Producing Company, L.P. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2017 |
| 359 | Genesis Production Company | | Oil & Gas Operator | May 1991 |
| 360 | Genesis Resources LLC | Parkersburg, WV 26104 | Oil & Gas Operator | Dec 2019 |
| 361 | Genesis St Operating LLC | Kansas City, MO 64108 | Oil & Gas Operator | Sep 2026 |
| 362 | Genesis Well Service | Colleyville, TX 76034 | Oil Operator | Sep 2026 |
| 363 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 364 | Genie Oil & Gas Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | May 2026 |
| 365 | Genie Oil Company | Lytle, TX 78052 | Oil & Gas Operator | Sep 2026 |
| 366 | Genie Oil Company "A" | Devine, TX 78016 | Oil Operator | Dec 2021 |
| 367 | Genmar Oil & Gas, Inc. | | Oil & Gas Operator | May 1986 |
| 368 | Gennesaret Investments, LLC | Burleson, TX 76028 | Oil & Gas Operator | Aug 2024 |
| 369 | Geno Oil & Gas Corp | | Oil & Gas Operator | Sep 2009 |
| 370 | Genzer Jim W | Sapulpa, OK 74067-1252 | Oil & Gas Operator | May 2013 |
| 371 | Geo American Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 372 | Geo Asset Management, Inc. | Katy, TX 77493 | Oil & Gas Operator | Sep 2026 |
| 373 | Geo Co., Inc. | Austin, TX 78745 | Oil Operator | Apr 1988 |
| 374 | Geo Energy Inc | Dublin, OH 43017 | Oil & Gas Operator | Dec 1989 |
| 375 | Geo Energy, LLC | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 376 | Geo Engineering, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 377 | Geo Exploration LLC | Oklahoma City, OK 73120-7116 | Oil & Gas Operator | Jun 2024 |
| 378 | Geo Exploration, Inc | Paducah, KY 42002 | Oil Operator | Dec 2024 |
| 379 | Geo Investment Inc. | | Oil & Gas Operator | Dec 2003 |
| 380 | Geo Kat LLC | Millersport, OH 43046 | Oil & Gas Operator | Dec 2025 |
| 381 | Geo Logic Environmental SRVCS LC | Kilgore, TX 75663 | Oil Operator | Dec 2011 |
| 382 | Geo Matrix Energy Corp. | | Oil Operator | Jan 2025 |
| 383 | Geo Oil & Gas Service, A General Partnership | Iola, KS 66749 | Oil & Gas Operator | Dec 2019 |
| 384 | Geo Oil Co Inc | Bloomington, IN 47402 | Oil & Gas Operator | Dec 2023 |
| 385 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | Sep 2026 |
| 386 | Geo-Earth Exploration Co Inc | Stillwater, OK 74076 | Oil & Gas Operator | May 1994 |
| 387 | Geo-Graphic Production, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Sep 2026 |
| 388 | Geo-Sax Petroleum | | Oil & Gas Operator | Apr 2026 |
| 389 | Geo-Vest Of Texas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2008 |
| 390 | Geo. R. Shaw Living Trust | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 391 | Geo720 LLC | Shattuck, OK 73858 | Oil & Gas Operator | Mar 2016 |
| 392 | Geodessa Corpora | | Oil Operator | Jul 1984 |
| 393 | Geodominion Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | May 2012 |
| 394 | Geodynamics Oil & Gas, Inc | | Oil & Gas Operator | Feb 1983 |
| 395 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 396 | Geodyne Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 397 | Geoex Resources Inc | | Oil & Gas Operator | Jan 1997 |
| 398 | Geoex, Inc. | Williamson, WV 25661 | Oil & Gas Operator | Dec 2024 |
| 399 | Geolinear Co. | | Oil & Gas Operator | Jul 1996 |
| 400 | Geological & Engineering Consultants | | Oil & Gas Operator | May 2026 |