| 28201 | Tesuque Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | May 2024 |
| 28202 | Tet Energy | | Oil Operator | Sep 2023 |
| 28203 | Teton Energy Co Inc | Denver, CO 80239 | Oil Operator | Dec 1983 |
| 28204 | Teton Petroleum Corporation | Kerrville, TX 78028 | Oil & Gas Operator | May 2024 |
| 28205 | Tetra Oil Company | | Oil & Gas Operator | Feb 2024 |
| 28206 | Tetragon Investments, LLC | Abilene, TX 79604 | Oil Operator | Jul 2014 |
| 28207 | Tettleton, Jon Otis | Nocona, TX 76255 | Oil & Gas Operator | Aug 2003 |
| 28208 | Tettleton, Steven B. | Nocona, TX 76255 | Oil Operator | May 2024 |
| 28209 | Tevebaugh MGMT Co | Baden, PA 15005-0123 | Oil & Gas Operator | Dec 2002 |
| 28210 | Tex-Am Petroleum Corp. | Eastland, TX 76448 | Oil & Gas Operator | May 2024 |
| 28211 | Tex-Am-Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 28212 | Tex-Ann Oil & Gas Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2024 |
| 28213 | Tex-Atic Resources, Inc. | S. Lake Tahoe, CA 96150 | Oil & Gas Operator | May 2024 |
| 28214 | Tex-Hio Energy | Terrell, TX 75156 | Oil & Gas Operator | Dec 1997 |
| 28215 | Tex-Lee Operating Company | Giddings, TX 78942 | Oil & Gas Operator | May 2024 |
| 28216 | Tex-Oak, Inc. | Oklahoma City, OK 73155 | Oil & Gas Operator | Dec 1995 |
| 28217 | Tex-Ok Energy LP | Cody, WY 82414-5915 | Oil & Gas Operator | Mar 2024 |
| 28218 | Tex-Ok Energy, LTD Partnership | Cody, WY 82414 | Oil & Gas Operator | May 2024 |
| 28219 | Tex-Pro Energy Operating, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2023 |
| 28220 | Tex-R Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2021 |
| 28221 | Tex-Star Production | Dallas, TX 75360-0577 | Oil & Gas Operator | Feb 2024 |
| 28222 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 28223 | Texacal, Inc. | Newport Beach, CA 92660 | Oil & Gas Operator | May 2024 |
| 28224 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | May 2024 |
| 28225 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jan 2024 |
| 28226 | Texaco Explorati | | Oil & Gas Operator | Dec 1996 |
| 28227 | Texaco Exploration & Prod | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
| 28228 | Texaco Exploration & Production Inc N W | Farmington, NM 87401 | Oil & Gas Operator | Aug 1995 |
| 28229 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 28230 | Texaco Inc & A.C. Glassell Jr | | Oil & Gas Operator | Aug 1980 |
| 28231 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 28232 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 28233 | Texaco Seaboard, Inc. | | Gas Operator | Sep 1980 |
| 28234 | Texaco USA - Mor | | Oil Operator | Aug 1988 |
| 28235 | Texada Resources, Inc. | | Oil & Gas Operator | Dec 1992 |
| 28236 | Texakoma E & P, LLC | Plano, TX 75024 | Oil & Gas Operator | May 2024 |
| 28237 | Texakoma Exploration & Production LLC | | Oil & Gas Operator | Feb 2024 |
| 28238 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 28239 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | May 2024 |
| 28240 | Texakoma Opr LP | Plano, TX 75024 | Oil & Gas Operator | Dec 2012 |
| 28241 | Texakota | | Oil & Gas Operator | Mar 1995 |
| 28242 | Texakota, Inc. | Houston, TX 77098 | Oil & Gas Operator | Mar 2021 |
| 28243 | Texan Petroleum Corporation | Dallas, TX 75204 | Oil & Gas Operator | Oct 2004 |
| 28244 | Texan Production | Pearsall, TX 78061 | Oil & Gas Operator | Aug 2003 |
| 28245 | Texan Production Company, Inc. | Canyon Lake, TX 78133 | Oil & Gas Operator | May 2024 |
| 28246 | Texana Operating Company | Houston, TX 77090 | Oil & Gas Operator | May 2024 |
| 28247 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 28248 | Texas American Resources Company | Austin, TX 78701 | Oil & Gas Operator | May 2024 |
| 28249 | Texas City Refining, Inc. | | Oil & Gas Operator | Nov 1988 |
| 28250 | Texas Coastal Resources LLC | Fairhope, AL 36532 | Oil Operator | May 2024 |
| 28251 | Texas Concho Operating Co. | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1999 |
| 28252 | Texas Consolidated Pet. Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | May 2024 |
| 28253 | Texas Crude & Dale Gas Expl | | Oil & Gas Operator | Dec 1984 |
| 28254 | Texas Crude Energy, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 2012 |
| 28255 | Texas Crude Exploration, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 1992 |
| 28256 | Texas Crude Oil Co. | | Oil & Gas Operator | Jan 1985 |
| 28257 | Texas Crude Oil Co. Et Al | | Oil & Gas Operator | May 1992 |
| 28258 | Texas Crude Oil, Inc. | | Oil & Gas Operator | Dec 1984 |
| 28259 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 28260 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 28261 | Texas Crude-Rebstock & Reeves | | Oil & Gas Operator | Feb 1980 |
| 28262 | Texas Crude-Wainoco-Hilliard | | Oil & Gas Operator | Jul 1978 |
| 28263 | Texas Eastern Skyline Oil | Houston, TX 77252 | Oil & Gas Operator | Jan 1987 |
| 28264 | Texas Eastern Transm. Corp. | | Oil & Gas Operator | Dec 2002 |
| 28265 | Texas Energies I | | Oil & Gas Operator | Aug 1994 |
| 28266 | Texas Energies, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Aug 1998 |
| 28267 | Texas Energy & Environmental | Houston, TX 77070 | Oil & Gas Operator | Nov 1998 |
| 28268 | Texas Energy & Environmental Inc | Houston, TX 77269 | Oil & Gas Operator | Oct 1998 |
| 28269 | Texas Energy Mutual LLC | | Oil Operator | Jun 2018 |
| 28270 | Texas Energy Operations, LC | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2024 |
| 28271 | Texas Energy Sources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2008 |
| 28272 | Texas Energy Trust Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2016 |
| 28273 | Texas Exploration & Prod. Co. | Gainesville, TX 76240 | Oil & Gas Operator | Apr 1996 |
| 28274 | Texas Fuel Company | Galveston, TX 77550 | Oil & Gas Operator | May 2024 |
| 28275 | Texas Gas Exploration Corp. | | Oil & Gas Operator | Nov 1986 |
| 28276 | Texas Gas Resources, Inc. | Houston, TX 77292 | Oil & Gas Operator | Jul 2009 |
| 28277 | Texas Gas Transmission Corp. | | Oil Operator | Aug 2003 |
| 28278 | Texas Gas Transmission LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2023 |
| 28279 | Texas General Petroleum Corp | | Oil & Gas Operator | Sep 1984 |
| 28280 | Texas Gulf Gas Corporation | Fayetteville, TX 78940 | Oil & Gas Operator | Jun 2005 |
| 28281 | Texas Hydrogen Energy Corp. | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 28282 | Texas Ind. Exploration, Inc. | | Oil & Gas Operator | Oct 2001 |
| 28283 | Texas Independent Explor LTD. | Houston, TX 77024 | Oil & Gas Operator | May 2024 |
| 28284 | Texas Independent Explor., Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 28285 | Texas Independent Exploration LP | Houston, TX 77024 | Oil & Gas Operator | Mar 2017 |
| 28286 | Texas Independent Oil Co., LLC | Argyle, TX 76226 | Oil & Gas Operator | May 2024 |
| 28287 | Texas International Oper., LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2013 |
| 28288 | Texas International Resource LLC | Allen, TX 75013 | Oil Operator | May 2024 |
| 28289 | Texas Investments | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 28290 | Texas JWB LLC | Rowlett, TX 75089 | Oil Operator | May 2024 |
| 28291 | Texas Keystone Inc | Oakmont, PA 15139-2072 | Oil & Gas Operator | Nov 2017 |
| 28292 | Texas Land & Petro Co., LLC | Carrollton, TX 75010 | Oil & Gas Operator | May 2024 |
| 28293 | Texas Land & Trading Co, Inc. | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 28294 | Texas Lone Star Petroleum Corp. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2013 |
| 28295 | Texas M.O.R., Inc. | Corsicana, TX 75109 | Oil Operator | Sep 2013 |
| 28296 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 28297 | Texas Meridian Res. Expl., Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 1998 |
| 28298 | Texas Mineral Group | Midland, TX 79705 | Oil & Gas Operator | Aug 2013 |
| 28299 | Texas Moran Exploration Company | Houston, TX 77098 | Oil & Gas Operator | Jun 2023 |
| 28300 | Texas Offshore Operations, LLC | Farmers BRNCH, TX 75234 | Oil & Gas Operator | May 2024 |