| 101 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 102 | Dirks, R.W. Pet. Eng. Inc. | Tuleta, TX 78162 | Oil & Gas Operator | Jul 1999 |
| 103 | DJ Exploration, Inc. | San Antonio, TX 78257 | Oil & Gas Operator | Dec 2025 |
| 104 | DKW Energy, Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Dec 2025 |
| 105 | DLM Energy | Houston, TX 77058 | Oil & Gas Operator | Sep 1994 |
| 106 | Dolberry Energy Resources Corp. | Dallas, TX 75252 | Oil Operator | Dec 2025 |
| 107 | Dorado Oil Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Oct 2013 |
| 108 | E & W Oil, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Dec 2025 |
| 109 | E L M Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | May 2000 |
| 110 | E-P Oil Co. Inc. | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 111 | E. T. Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 112 | Eagle Energy Acquisitions LP | Houston, TX 77002 | Oil & Gas Operator | Aug 2014 |
| 113 | Eagle Ford Oil Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 114 | Eagle Hydrocarbons (Texas) Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 115 | Eagle Hydrocarbons Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 2020 |
| 116 | Ec Stryker Inc | Decatur, TX 76234 | Oil & Gas Operator | Dec 2015 |
| 117 | Eighty-Six Oil Company, Inc. | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 118 | El Dorado Resources Inc. | Waco, TX 76710 | Oil & Gas Operator | Oct 2009 |
| 119 | Em-Gee Oil Account | Jacksonville, TX 75766 | Oil & Gas Operator | Sep 1995 |
| 120 | Embassy Well Service, LLC | Carrollton, TX 75011 | Oil & Gas Operator | Dec 2025 |
| 121 | Energypro, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Dec 2025 |
| 122 | Enerquest Oil & Gas LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Aug 2025 |
| 123 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 124 | Engelke, Randall Glen | Luling, TX 78648 | Oil & Gas Operator | Jul 2007 |
| 125 | Enhanced RS, Inc. | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 126 | Etoco Incorporated | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 127 | Evantech Energy Corp. | Fort Worth, TX 76120 | Oil & Gas Operator | Apr 1995 |
| 128 | F-B Oil, LP | Decatur, TX 76234 | Oil Operator | Aug 2015 |
| 129 | Field Petroleum Corp. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2025 |
| 130 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Dec 2025 |
| 131 | Flamingo Oil & Gas | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 132 | Flat Creek Operating Co. | Rockwall, TX 75087 | Oil & Gas Operator | Jun 2004 |
| 133 | Flint Pipeline Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 134 | Ford, Don H. & Assoc. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 135 | Fortune Operating Company | Willis, TX 77378 | Oil & Gas Operator | Dec 2025 |
| 136 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 137 | Frank Louis L | Kingsville, TX 78364 | Oil & Gas Operator | Aug 2003 |
| 138 | G & G Oil | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 139 | Gaither Petroleum Corporation | Katy, TX 77493 | Oil & Gas Operator | Dec 2025 |
| 140 | Gallery Petroleum LLC | Houston, TX 77036 | Oil & Gas Operator | Dec 2025 |
| 141 | Garrison LTD. | San Antonio, TX 78257 | Oil & Gas Operator | Dec 2025 |
| 142 | Gauge Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 143 | Geomeg Energy Operating Co., LLC | Aransas Pass, TX 78336 | Oil & Gas Operator | Dec 2025 |
| 144 | Geomeg Operating, LLC | Dripping SPGS, TX 78620 | Oil Operator | Nov 2010 |
| 145 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 146 | Glenco Oil & Gas Company | Seguin, TX 78155 | Oil & Gas Operator | Dec 1994 |
| 147 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 148 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Dec 2025 |
| 149 | Goliad Operating Company | Houston, TX 77265 | Oil & Gas Operator | Aug 2003 |
| 150 | Gouger Oil Co. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 1995 |
| 151 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 152 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Dec 2025 |
| 153 | Great Plains Resources, Inc. | Nixon, TX 78140 | Oil & Gas Operator | Dec 2025 |
| 154 | Guinn Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Sep 2024 |
| 155 | Gulfstar Properties, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Dec 2025 |
| 156 | H & K Oil Company (A) | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 157 | H. & J. Drilling Company | Fort Worth, TX 76114 | Oil & Gas Operator | Aug 2003 |
| 158 | H.K.E. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2025 |
| 159 | Hamilton, Clay | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Dec 2025 |
| 160 | Hankamer, Curtis Corporation,The | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 161 | Hardin Energy Co., Inc. | Bigfoot, TX 78005 | Oil Operator | Dec 2025 |
| 162 | Hardin, W.V. Estate | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2002 |
| 163 | Harrison Interests, LTD. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 164 | Hawk Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 165 | Hazelett Oil Company, Inc. | Dale, TX 78616 | Oil & Gas Operator | Sep 2005 |
| 166 | Hazelett Oil, Inc. | Dale, TX 78616 | Oil & Gas Operator | Aug 2024 |
| 167 | Herms, Walter | Luling, TX 78648 | Oil & Gas Operator | Sep 2002 |
| 168 | Hidden Oaks Oil Company, LLC | New Braunfels, TX 78132 | Oil Operator | Dec 2025 |
| 169 | Higginbotham, O. V. | Cedar Park, TX 78613 | Oil & Gas Operator | Jul 1996 |
| 170 | Higher Standard Oil Company,Inc. | Frisco, TX 75034 | Oil Operator | Dec 2025 |
| 171 | Holloway Oil Company | Austin, TX 78764 | Oil & Gas Operator | Feb 2004 |
| 172 | Hollub Production Company | Seguin, TX 78156 | Oil & Gas Operator | Jul 2000 |
| 173 | Hollub, Lambert Drilling Company | Seguin, TX 78155 | Oil & Gas Operator | Dec 2025 |
| 174 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 175 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 176 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 177 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Dec 2025 |
| 178 | Iron Orchard Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 179 | J & J Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Mar 2015 |
| 180 | J & J Oil Venture | Jacksonville, TX 75766 | Oil & Gas Operator | Aug 1996 |
| 181 | Jad Oil, Inc. | Hallettsville, TX 77964 | Oil & Gas Operator | Dec 2025 |
| 182 | JKW Energy Division | Abilene, TX 79608 | Oil & Gas Operator | Aug 2010 |
| 183 | Joe R. Cheatham Oil Company | Lockhart, TX 78644 | Oil Operator | Dec 2025 |
| 184 | Jupiter Energy LLC | Richmond, TX 77469 | Oil Operator | Dec 2025 |
| 185 | K & K Oil Co. | Corsicana, TX 75109 | Oil & Gas Operator | Dec 2025 |
| 186 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 187 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 188 | Kidd Production Co. | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 189 | Kingwood Oil Co; Inc | Luling, TX 78648 | Oil & Gas Operator | Nov 2015 |
| 190 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 191 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Dec 2025 |
| 192 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 193 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 194 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 195 | Last Run LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 196 | Lay, J. D. | Lockhart, TX 78644 | Oil & Gas Operator | May 1997 |
| 197 | Lay, Warren Leon | Lockhart, TX 78644 | Oil & Gas Operator | Aug 2023 |
| 198 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 199 | Lety Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2002 |
| 200 | Lif-Tex Oil Recovery, Inc. | Luling, TX 78648 | Oil Operator | Dec 2025 |