| 11101 | Texona Petroleum Corporation | Houston, TX 77084 | Oil & Gas Operator | Aug 2003 |
| 11102 | Texowa, LLC | Roanoke, TX 76262 | Oil Operator | Oct 2025 |
| 11103 | Texoz E&P I, Inc. | Houston, TX 77077 | Oil & Gas Operator | Oct 2025 |
| 11104 | Texploration | Rosharon, TX 77583 | Oil Operator | Oct 2025 |
| 11105 | Texron Operating, LLC | Bulverde, TX 78163 | Oil & Gas Operator | Oct 2025 |
| 11106 | Texstar Drilling, Inc. | Houston, TX 77084 | Oil & Gas Operator | Oct 2025 |
| 11107 | Texstar North America, Inc. | Waynesboro, MS 39367 | Oil & Gas Operator | Aug 1994 |
| 11108 | Texstar Oil & Gas, LLC | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 11109 | Texstar Operating Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Oct 2025 |
| 11110 | Texstar Petroleum, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2000 |
| 11111 | Texsun Operating Company Limited | Abilene, TX 79601 | Oil & Gas Operator | Mar 1996 |
| 11112 | Textroleum Production, Inc. | Lubbock, TX 79452 | Oil & Gas Operator | Mar 2008 |
| 11113 | Textron Southwest Inc. | Henderson, TX 75654 | Oil & Gas Operator | Oct 2025 |
| 11114 | Textron Southwest L.L.C. | Addison, TX 75001 | Oil & Gas Operator | Oct 2004 |
| 11115 | Texu Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Jan 2007 |
| 11116 | Texxol Operating Company, Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Oct 2025 |
| 11117 | Texxon Resources, Inc. | Winter Park, FL 32792 | Oil & Gas Operator | Oct 2025 |
| 11118 | Texzona Oil & Gas, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 1997 |
| 11119 | TFX, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2019 |
| 11120 | TGNR East Texas II LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11121 | TGNR East Texas LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11122 | TGNR Gulf Coast LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11123 | TGNR Panola LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11124 | TGNR TVL LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 11125 | Tgo Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Dec 2008 |
| 11126 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 11127 | Thagard Trust | Rancho Santo, CA 92688 | Gas Operator | Oct 2025 |
| 11128 | Thalmann Oil Field Service, Inc. | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Mar 2008 |
| 11129 | Thalmann Oilfield | Carrizo SPGS, TX 78834 | Oil Operator | Oct 2025 |
| 11130 | Thalmann, David Vac Service Inc | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Oct 2025 |
| 11131 | Tharp Operating Company | Houston, TX 77070 | Oil & Gas Operator | Nov 2014 |
| 11132 | The Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 11133 | The Cornell Corporation | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 1993 |
| 11134 | The Dehart Company LLC | Ardmore, OK 73402-0907 | Oil Operator | Jun 2025 |
| 11135 | The Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2007 |
| 11136 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Jul 2025 |
| 11137 | The Termo Company | Long Beach, CA 90801 | Oil & Gas Operator | Aug 2025 |
| 11138 | Theisen, VIncent A. | Wilmington, DE 19807 | Oil & Gas Operator | Sep 2003 |
| 11139 | Thigpin Operating, LLC | Odessa, TX 79762 | Oil Operator | Oct 2025 |
| 11140 | Third Coast Energy, Inc. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Oct 2025 |
| 11141 | Thomas Exploration & Devel., Inc | Jourdanton, TX 78026 | Oil & Gas Operator | Oct 2025 |
| 11142 | Thomas Oil & Gas Company | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 11143 | Thomas Oil And Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2019 |
| 11144 | Thomas Operating LTD. Co. | Dallas, TX 75220 | Oil & Gas Operator | Oct 2025 |
| 11145 | Thomas Production | Electra, TX 76360 | Oil & Gas Operator | Mar 2015 |
| 11146 | Thomas Resources Corporation | Monahans, TX 79756 | Oil Operator | Mar 2008 |
| 11147 | Thomas, B. K. | Plano, TX 75093 | Oil & Gas Operator | Jan 2008 |
| 11148 | Thomas, M.A. Oil Associates | Nocona, TX 76255 | Oil & Gas Operator | Oct 2025 |
| 11149 | Thomas, Mike | Nixon, TX 78140 | Oil Operator | Oct 2025 |
| 11150 | Thomas, R. W. Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 11151 | Thomas, T. N. Oil Company | Aiken, SC 29801 | Oil & Gas Operator | Oct 2025 |
| 11152 | Thompson Oil Co. | Corsicana, TX 75151 | Oil & Gas Operator | Jul 2025 |
| 11153 | Thompson Operating Co. | Abernathy, TX 79311 | Oil & Gas Operator | Aug 1994 |
| 11154 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 11155 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 11156 | Thompson, Mark P. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 11157 | Thompson, Richard W. Inc. | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 11158 | Thor Operating Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 1995 |
| 11159 | Thor-Max Operating, Inc. | Plano, TX 75025 | Oil & Gas Operator | Oct 2025 |
| 11160 | Thornberry Oilfield Service, Inc | Conroe, TX 77302 | Oil & Gas Operator | Aug 2003 |
| 11161 | Thornton Oil Co. | Abilene, TX 79603 | Oil & Gas Operator | Aug 2003 |
| 11162 | Thornton, Michael D. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 1995 |
| 11163 | Thorp Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Feb 2014 |
| 11164 | THP Operating LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Oct 2025 |
| 11165 | Thrall Operating Company, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 11166 | Thrash, Afton | Kilgore, TX 75663 | Oil & Gas Operator | Apr 1996 |
| 11167 | Three B Corporation | Fort Worth, TX 76179 | Gas Operator | Jun 2009 |
| 11168 | Three B Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 11169 | Three B, LP | Fort Worth, TX 76179 | Gas Operator | Oct 2025 |
| 11170 | Three C Exploration, LLC | Hebbronville, TX 78361 | Oil & Gas Operator | Oct 2025 |
| 11171 | Three D Submersible Pumps, Inc. | Heavener, OK 74937 | Oil & Gas Operator | Aug 2003 |
| 11172 | Three Forks Operating Co, LLC | Flatonia, TX 78941 | Oil & Gas Operator | Oct 2025 |
| 11173 | Three Forks Resources LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Oct 2025 |
| 11174 | Three G Oil Co | Baird, TX 79504 | Oil & Gas Operator | Jun 2004 |
| 11175 | Three J Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Oct 2025 |
| 11176 | Three J Operating Company, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 11177 | Three J'S Petroleum, Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Oct 2025 |
| 11178 | Three Mile Joint Venture | Houston, TX 77027 | Oil & Gas Operator | Jul 1995 |
| 11179 | Three P Operating Co.,GP, L.L.C. | Newcastle, TX 76372 | Oil & Gas Operator | Oct 2025 |
| 11180 | Three P Operating Company | Newcastle, TX 76372 | Oil & Gas Operator | Nov 2007 |
| 11181 | Three R Oil Company | Post, TX 79356 | Oil & Gas Operator | Oct 2025 |
| 11182 | Three Rivers Oper Co III LLC | Austin, TX 78735 | Oil & Gas Operator | Nov 2017 |
| 11183 | Three Rivers Operating Co II LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 11184 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 11185 | Three Sisters Petroleum, Inc. | Oil City, LA 71061 | Oil & Gas Operator | Jan 2025 |
| 11186 | Three Span Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 11187 | Three Summits Operating LLC | Grapevine, TX 76051 | Oil & Gas Operator | Oct 2025 |
| 11188 | Three-B Oil Company, The | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 11189 | Three-C Oil And Gas | Hebbronville, TX 78361 | Oil & Gas Operator | Oct 2025 |
| 11190 | Three-C Production Company | Temple, TX 76502 | Oil Operator | Oct 2025 |
| 11191 | Threeway Drilling Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 11192 | Thresher Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2025 |
| 11193 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 11194 | Threshold Exploration, Inc. | College Sta, TX 77842 | Oil & Gas Operator | Oct 2015 |
| 11195 | Thrifty Well Service | Rice, TX 75155 | Oil & Gas Operator | Jun 2009 |
| 11196 | Throckmorton Oil, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Mar 2008 |
| 11197 | Throne Delaware Resources, LLC | McKinney, TX 75072 | Oil & Gas Operator | Dec 2021 |
| 11198 | Throne Petroleum Resources LLC | Houston, TX 77006 | Oil & Gas Operator | Aug 2021 |
| 11199 | THT Covenant Holdings, LLC | Wichita Falls, TX 76307 | Oil Operator | Oct 2025 |
| 11200 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |