| 101 | Geiselman, Grover J. | Richmond, TX 77469 | Oil & Gas Operator | Feb 1995 |
| 102 | Geiser Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2019 |
| 103 | Geiser, D. Allen | Portland, TX 78374 | Oil & Gas Operator | Oct 2005 |
| 104 | Gel Petroleum, Inc. | Bay City, TX 77414 | Oil & Gas Operator | Oct 2025 |
| 105 | Gem Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2002 |
| 106 | Gemarmi Inc. | Cypress, TX 77433 | Oil & Gas Operator | Oct 2025 |
| 107 | Gemini Energy Company | Kilgore, TX 75663 | Oil Operator | Oct 2025 |
| 108 | Gemini Energy, Inc. | Kerens, TX 75144 | Oil Operator | Oct 2025 |
| 109 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 110 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 111 | Gen-Nan Resources & Equip., Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 112 | Gen-Nan Resources & Equip., L.P. | Midland, TX 79702 | Oil & Gas Operator | Jan 2008 |
| 113 | Gen-Sher | Bluegrove, TX 76352 | Oil & Gas Operator | Feb 2005 |
| 114 | Gen-Sher L.L.P. | Bluegrove, TX 76352 | Oil & Gas Operator | Oct 2025 |
| 115 | Genecov Group, Inc. The | Tyler, TX 75713 | Oil & Gas Operator | Dec 2002 |
| 116 | Genepa Petroleum Company | Spring, TX 77379 | Oil & Gas Operator | Oct 2025 |
| 117 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 118 | General Crude Oil Co | Houston, TX 77005 | Oil & Gas Operator | Dec 1979 |
| 119 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Oct 2025 |
| 120 | General Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 121 | Genesis Exploration LLC | FT Stockton, TX 79735 | Oil & Gas Operator | Oct 2025 |
| 122 | Genesis Gas & Oil LLC | Kansas City, MO 64108 | Oil & Gas Operator | Aug 2011 |
| 123 | Genesis Producing Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2007 |
| 124 | Genesis Producing Company, L.P. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2017 |
| 125 | Genesis St Operating LLC | Kansas City, MO 64108 | Oil & Gas Operator | Oct 2025 |
| 126 | Genesis Well Service | Colleyville, TX 76034 | Oil Operator | Oct 2025 |
| 127 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 128 | Genie Oil Company | Lytle, TX 78052 | Oil & Gas Operator | Oct 2025 |
| 129 | Genie Oil Company "A" | Devine, TX 78016 | Oil Operator | Dec 2021 |
| 130 | Gennesaret Investments, LLC | Burleson, TX 76028 | Oil & Gas Operator | Aug 2024 |
| 131 | Geo Asset Management, Inc. | Katy, TX 77493 | Oil & Gas Operator | Oct 2025 |
| 132 | Geo Co., Inc. | Austin, TX 78745 | Oil Operator | Apr 1988 |
| 133 | Geo Engineering, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 134 | Geo Logic Environmental SRVCS LC | Kilgore, TX 75663 | Oil Operator | Dec 2011 |
| 135 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | Oct 2025 |
| 136 | Geo-Graphic Production, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Oct 2025 |
| 137 | Geo-Vest Of Texas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2008 |
| 138 | Geodominion Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | May 2012 |
| 139 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 140 | Geodyne Resources Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 141 | Geomark Resources, L.L.C. | Lubbock, TX 79453 | Oil & Gas Operator | Oct 2025 |
| 142 | Geomeg Energy Operating Co., LLC | Aransas Pass, TX 78336 | Oil & Gas Operator | Oct 2025 |
| 143 | Geomeg Operating, LLC | Dripping SPGS, TX 78620 | Oil Operator | Nov 2010 |
| 144 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 145 | Geopetra Partners, LLC | Dallas, TX 75231 | Oil & Gas Operator | Oct 2025 |
| 146 | George Interests | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 147 | Georgetown Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 1995 |
| 148 | Georgetown Operating Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2019 |
| 149 | Georgia-Pacific Corp. | Atlanta, GA 30348 | Gas Operator | May 1986 |
| 150 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 151 | Geosouthern Operating II, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 152 | Geostrat Inc. | Addison, TX 75001 | Oil & Gas Operator | Nov 2011 |
| 153 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 154 | Geotech Production Inc | Centennial, CO 80016 | Oil & Gas Operator | Jun 2020 |
| 155 | Geotrac Energy Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2000 |
| 156 | Gepard Energy Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 157 | Germany Exploration Co | Carrollton, TX 75006 | Oil & Gas Operator | Nov 1986 |
| 158 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 159 | Geronimo Oil Co. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Mar 2008 |
| 160 | Gerry-Mac Oil, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 161 | Geurin Oil & Gas | Saint Jo, TX 76265 | Oil & Gas Operator | Oct 2022 |
| 162 | GGG Oil Co. | Cotulla, TX 78014 | Oil & Gas Operator | Feb 2006 |
| 163 | GGG Oil Company, LTD. | Cotulla, TX 78014 | Oil & Gas Operator | Oct 2025 |
| 164 | GGP Exploration, LTD. | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 165 | Gha Barnett, LLC | Irving, TX 75062 | Gas Operator | Oct 2025 |
| 166 | Ghost Road, LLC | Batson, TX 77519 | Oil Operator | Oct 2025 |
| 167 | GHS Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 168 | Giant Energy Corp. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2019 |
| 169 | Giant NRG Co., LP | Dallas, TX 75230 | Oil & Gas Operator | Oct 2025 |
| 170 | Gibbs Drilling Co. | Iraan, TX 79744 | Oil & Gas Operator | Mar 2008 |
| 171 | Gibbs, Loyd Leasing | Gainesville, TX 76240 | Oil & Gas Operator | Aug 2007 |
| 172 | Gibraltar Petroleum Corporation | Mabank, TX 75147 | Oil & Gas Operator | Nov 2008 |
| 173 | Gibraltar Resources, Inc. | Dallas, TX 75374 | Oil & Gas Operator | Jul 1993 |
| 174 | Gibson Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 1997 |
| 175 | Gideon Operating | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 176 | Gidoen Oil Company | Brookesmith, TX 76827 | Oil Operator | Oct 2025 |
| 177 | Giebel Petroleum LTD. | Midland, TX 79705 | Oil & Gas Operator | Jul 2019 |
| 178 | Gierhart Exploration, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Apr 1994 |
| 179 | Gifford Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Jul 2003 |
| 180 | Gil-John Oil Co. | Alamogordo, NM 88310 | Oil & Gas Operator | Jan 2009 |
| 181 | Gilbert, A. A. | Shreveport, LA 71133 | Oil & Gas Operator | Mar 1997 |
| 182 | Gilbert,A.A.TX Acct/Partnership | Shreveport, LA 71133 | Oil Operator | Oct 2025 |
| 183 | Gilbreath Tank Trucks, Inc. | Whitesboro, TX 76273 | Oil Operator | Oct 2025 |
| 184 | Gill Oil Company, LP | White Oak, TX 75693 | Oil Operator | Oct 2025 |
| 185 | Gillespie Operating LLC | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 186 | Gilliam'S Aghorn Energy | Odessa, TX 79768 | Oil & Gas Operator | May 1997 |
| 187 | Gilliam, Frank | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 188 | Gillispie, Inc. | Amarillo, TX 79159 | Gas Operator | Oct 2025 |
| 189 | Gillring Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 1994 |
| 190 | Gilmore Oil & Gas | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 191 | Gilmore, Leo Oil, Inc. | Holliday, TX 76366 | Oil & Gas Operator | Oct 2025 |
| 192 | Gilster, Ralph R. III | Victoria, TX 77901 | Oil & Gas Operator | Jun 2004 |
| 193 | Gilstrap, Joel | Water Valley, TX 76958 | Oil & Gas Operator | Oct 2025 |
| 194 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 195 | Ginger Oil Company (A) | The Woodlands, TX 77380 | Oil & Gas Operator | Jan 2016 |
| 196 | Ginger Petroleum Company, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Oct 2025 |
| 197 | Ginnings Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 198 | Ginsweet Operating, Inc. | Borger, TX 79007 | Gas Operator | Oct 2025 |
| 199 | Glacier Park Company | Houston, TX 77252 | Oil & Gas Operator | Aug 2001 |
| 200 | Glade Operating Co. | Longview, TX 75604 | Oil & Gas Operator | Oct 2025 |