| 4201 | Gcer Onshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 4202 | Gco Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 4203 | Gcofer LLC | Hobbs, NM 88240 | Oil Operator | Jul 2025 |
| 4204 | Gcows Operating LLC | Montgomery, TX 77356 | Oil Operator | Jul 2025 |
| 4205 | Gda Investments Inc | Oklahoma City, OK 73123-0403 | Oil & Gas Operator | May 2025 |
| 4206 | Gec Operating, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 4207 | Gecko | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 4208 | Gecko Oil & Gas | Brookesmith, TX 76827 | Oil & Gas Operator | Jun 2007 |
| 4209 | Geer Production Company | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2025 |
| 4210 | Gei Management Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Sep 1993 |
| 4211 | Geiselman, Grover J. | Richmond, TX 77469 | Oil & Gas Operator | Feb 1995 |
| 4212 | Geiser Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2019 |
| 4213 | Geiser, D. Allen | Portland, TX 78374 | Oil & Gas Operator | Oct 2005 |
| 4214 | Gel Petroleum, Inc. | Bay City, TX 77414 | Oil & Gas Operator | Jul 2025 |
| 4215 | Gem Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2002 |
| 4216 | Gemarmi Inc. | Cypress, TX 77433 | Oil & Gas Operator | Jul 2025 |
| 4217 | Gemini Energy Company | Kilgore, TX 75663 | Oil Operator | Jul 2025 |
| 4218 | Gemini Energy, Inc. | Kerens, TX 75144 | Oil Operator | Jul 2025 |
| 4219 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 4220 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 4221 | Gen-Nan Resources & Equip., Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 4222 | Gen-Nan Resources & Equip., L.P. | Midland, TX 79702 | Oil & Gas Operator | Jan 2008 |
| 4223 | Gen-Sher | Bluegrove, TX 76352 | Oil & Gas Operator | Feb 2005 |
| 4224 | Gen-Sher L.L.P. | Bluegrove, TX 76352 | Oil & Gas Operator | Jul 2025 |
| 4225 | Genecov Group, Inc. The | Tyler, TX 75713 | Oil & Gas Operator | Dec 2002 |
| 4226 | Genepa Petroleum Company | Spring, TX 77379 | Oil & Gas Operator | Jul 2025 |
| 4227 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 4228 | General Crude Oil Co | Houston, TX 77005 | Oil & Gas Operator | Dec 1979 |
| 4229 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Jul 2025 |
| 4230 | General Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2025 |
| 4231 | Genesis Exploration LLC | FT Stockton, TX 79735 | Oil & Gas Operator | Jul 2025 |
| 4232 | Genesis Gas & Oil LLC | Kansas City, MO 64108 | Oil & Gas Operator | Aug 2011 |
| 4233 | Genesis Producing Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2007 |
| 4234 | Genesis Producing Company, L.P. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2017 |
| 4235 | Genesis St Operating LLC | Kansas City, MO 64108 | Oil & Gas Operator | Jul 2025 |
| 4236 | Genesis Well Service | Colleyville, TX 76034 | Oil Operator | Jul 2025 |
| 4237 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 4238 | Genie Oil Company | Devine, TX 78016 | Oil & Gas Operator | Jul 2025 |
| 4239 | Genie Oil Company "A" | Devine, TX 78016 | Oil Operator | Dec 2021 |
| 4240 | Gennesaret Investments, LLC | Burleson, TX 76028 | Oil & Gas Operator | Aug 2024 |
| 4241 | Geo Asset Management, Inc. | Katy, TX 77493 | Oil & Gas Operator | Jul 2025 |
| 4242 | Geo Co., Inc. | Austin, TX 78745 | Oil Operator | Apr 1988 |
| 4243 | Geo Engineering, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 4244 | Geo Logic Environmental SRVCS LC | Kilgore, TX 75663 | Oil Operator | Dec 2011 |
| 4245 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | Jul 2025 |
| 4246 | Geo-Graphic Production, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Jul 2025 |
| 4247 | Geo-Vest Of Texas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2008 |
| 4248 | Geodominion Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | May 2012 |
| 4249 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 4250 | Geodyne Resources Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 4251 | Geomark Resources, L.L.C. | Lubbock, TX 79453 | Oil & Gas Operator | Jul 2025 |
| 4252 | Geomeg Energy Operating Co., LLC | Aransas Pass, TX 78336 | Oil & Gas Operator | Jul 2025 |
| 4253 | Geomeg Operating, LLC | Dripping SPGS, TX 78620 | Oil Operator | Nov 2010 |
| 4254 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2025 |
| 4255 | Geopetra Partners, LLC | Dallas, TX 75231 | Oil & Gas Operator | Jul 2025 |
| 4256 | George Interests | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 4257 | Georgetown Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 1995 |
| 4258 | Georgetown Operating Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2019 |
| 4259 | Georgia-Pacific Corp. | Atlanta, GA 30348 | Gas Operator | May 1986 |
| 4260 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 4261 | Geosouthern Operating II, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 4262 | Geostrat Inc. | Addison, TX 75001 | Oil & Gas Operator | Nov 2011 |
| 4263 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 2025 |
| 4264 | Geotech Production Inc | Centennial, CO 80016 | Oil & Gas Operator | Jun 2020 |
| 4265 | Geotrac Energy Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2000 |
| 4266 | Gepard Energy Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 4267 | Germany Exploration Co | Carrollton, TX 75006 | Oil & Gas Operator | Nov 1986 |
| 4268 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 4269 | Geronimo Oil Co. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Mar 2008 |
| 4270 | Gerry-Mac Oil, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 4271 | Geurin Oil & Gas | Saint Jo, TX 76265 | Oil & Gas Operator | Oct 2022 |
| 4272 | GGG Oil Co. | Cotulla, TX 78014 | Oil & Gas Operator | Feb 2006 |
| 4273 | GGG Oil Company, LTD. | Cotulla, TX 78014 | Oil & Gas Operator | Jul 2025 |
| 4274 | GGP Exploration, LTD. | Fort Worth, TX 76101 | Oil & Gas Operator | Jul 2025 |
| 4275 | Gha Barnett, LLC | Irving, TX 75062 | Gas Operator | Jul 2025 |
| 4276 | Ghost Road, LLC | Batson, TX 77519 | Oil Operator | Jul 2025 |
| 4277 | GHS Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 4278 | Giant Energy Corp. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2019 |
| 4279 | Giant NRG Co., LP | Dallas, TX 75230 | Oil & Gas Operator | Jul 2025 |
| 4280 | Gibbs Drilling Co. | Iraan, TX 79744 | Oil & Gas Operator | Mar 2008 |
| 4281 | Gibbs, Loyd Leasing | Gainesville, TX 76240 | Oil & Gas Operator | Aug 2007 |
| 4282 | Gibraltar Petroleum Corporation | Mabank, TX 75147 | Oil & Gas Operator | Nov 2008 |
| 4283 | Gibraltar Resources, Inc. | Dallas, TX 75374 | Oil & Gas Operator | Jul 1993 |
| 4284 | Gibson Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 1997 |
| 4285 | Gideon Operating | Coleman, TX 76834 | Oil & Gas Operator | Jul 2025 |
| 4286 | Gidoen Oil Company | Brookesmith, TX 76827 | Oil Operator | Jul 2025 |
| 4287 | Giebel Petroleum LTD. | Midland, TX 79705 | Oil & Gas Operator | Jul 2019 |
| 4288 | Gierhart Exploration, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Apr 1994 |
| 4289 | Gifford Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Jul 2003 |
| 4290 | Gilbert, A. A. | Shreveport, LA 71133 | Oil & Gas Operator | Mar 1997 |
| 4291 | Gilbert,A.A.TX Acct/Partnership | Shreveport, LA 71133 | Oil Operator | Jul 2025 |
| 4292 | Gilbreath Tank Trucks, Inc. | Whitesboro, TX 76273 | Oil Operator | Jul 2025 |
| 4293 | Gill Oil Company, LP | White Oak, TX 75693 | Oil Operator | Jul 2025 |
| 4294 | Gillespie Operating LLC | Abilene, TX 79608 | Oil & Gas Operator | Jul 2025 |
| 4295 | Gilliam'S Aghorn Energy | Odessa, TX 79768 | Oil & Gas Operator | May 1997 |
| 4296 | Gilliam, Frank | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 4297 | Gillispie, Inc. | Amarillo, TX 79159 | Gas Operator | Jul 2025 |
| 4298 | Gillit Land And Livestock, LP | Holliday, TX 76366 | Oil Operator | Jul 2025 |
| 4299 | Gillring Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 1994 |
| 4300 | Gilmore Oil & Gas | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |