| 11201 | Transatlantic Petr (USA) Corp. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2024 |
| 11202 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 11203 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 11204 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 11205 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Dec 2024 |
| 11206 | Transpacific Energy, LLC | Katy, TX 77450 | Oil & Gas Operator | Dec 2024 |
| 11207 | Transpetco I | Shreveport, LA 71101 | Oil & Gas Operator | May 2009 |
| 11208 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 11209 | Trap Rock Oil Company | Cambridge, MA 02138 | Oil & Gas Operator | Nov 2005 |
| 11210 | Trap Rock Oil, LTD. | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
| 11211 | Traton Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Mar 2019 |
| 11212 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2024 |
| 11213 | Travers Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2024 |
| 11214 | Travis | Houston, TX 77057 | Oil Operator | Dec 2024 |
| 11215 | Travis Operating, LLC | Kingwood, TX 77345 | Oil & Gas Operator | Dec 2024 |
| 11216 | Travis, J. J., Trustee | Rockport, TX 78382 | Oil & Gas Operator | Dec 1996 |
| 11217 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Dec 2024 |
| 11218 | Treadstone Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2016 |
| 11219 | Treadstone Energy PRTNR Op, LLC | Katy, TX 77494 | Oil & Gas Operator | Dec 2024 |
| 11220 | Treco Oil Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2024 |
| 11221 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 11222 | Trejim Operators, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2024 |
| 11223 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Jul 2024 |
| 11224 | Trek Exploration, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Dec 2024 |
| 11225 | Trek Oil & Gas, Inc | Houston, TX 77002 | Oil Operator | Mar 1998 |
| 11226 | Trek Petroleum Company, Inc. | Midland, TX 79707 | Oil & Gas Operator | Dec 2024 |
| 11227 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Dec 2024 |
| 11228 | Tren Energy LLC | El Paso, TX 79912 | Oil Operator | Dec 2024 |
| 11229 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 11230 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11231 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 11232 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 11233 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Dec 2024 |
| 11234 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 11235 | Tres Roughneckas WTX LLC | Houston, TX 77009 | Oil Operator | Dec 2024 |
| 11236 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
| 11237 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 11238 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 11239 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2024 |
| 11240 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 11241 | Tri City Oil Co., LLC | Kountze, TX 77625 | Oil Operator | Dec 2024 |
| 11242 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Dec 2024 |
| 11243 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Dec 2024 |
| 11244 | Tri Star Operating, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jan 2002 |
| 11245 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Dec 2024 |
| 11246 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 11247 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 11248 | Tri-County Operating Company | Seguin, TX 78156 | Gas Operator | Feb 1997 |
| 11249 | Tri-Dyne Resources, Inc. | Southern Pine, NC 28387 | Oil & Gas Operator | Feb 2000 |
| 11250 | Tri-Ex Petroleum, L.P. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2013 |
| 11251 | Tri-Force Operating, L.L.C. | Royse City, TX 75189 | Oil & Gas Operator | Dec 2024 |
| 11252 | Tri-K Production Company, Inc. | Olney, TX 76374 | Oil & Gas Operator | Apr 1996 |
| 11253 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 11254 | Tri-State Resources, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2012 |
| 11255 | Tri-State Sales & Production | Rodessa, LA 71069 | Oil & Gas Operator | Dec 2008 |
| 11256 | Tri-Tex Exploration LTD | Abilene, TX 79608 | Oil Operator | Apr 2019 |
| 11257 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 11258 | Tri-W Oil | Luling, TX 78648 | Oil Operator | Dec 2024 |
| 11259 | Tri-W Oil, Inc. | Luling, TX 78648 | Oil Operator | Apr 2007 |
| 11260 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 11261 | Triad O&G, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 11262 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 11263 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 11264 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 11265 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Dec 2024 |
| 11266 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 11267 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 11268 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2024 |
| 11269 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 11270 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2024 |
| 11271 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Dec 2024 |
| 11272 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 11273 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
| 11274 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 11275 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2024 |
| 11276 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Dec 2024 |
| 11277 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 11278 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Dec 2024 |
| 11279 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2024 |
| 11280 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Dec 2024 |
| 11281 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 11282 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Dec 2024 |
| 11283 | Trinity Gas Storage, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Dec 2024 |
| 11284 | Trinity Minerals&Operating Corp. | Abilene, TX 79605 | Oil & Gas Operator | Dec 1995 |
| 11285 | Trinity Operating & Prod., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 11286 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 11287 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 11288 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 11289 | Trinity River Operating Company | Oklahoma City, OK 73147 | Oil & Gas Operator | Dec 2024 |
| 11290 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 11291 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 11292 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 11293 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 11294 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 11295 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 11296 | Triple "S" Gas, Inc. | Dallas, TX 75355 | Oil & Gas Operator | Dec 2024 |
| 11297 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 11298 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 11299 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Dec 2024 |
| 11300 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |