| 30201 | Turner, Jack L | El Dorado, AR 71730 | Oil Operator | Nov 2023 |
| 30202 | Turner, M. O. | San Antonio, TX 78278 | Oil & Gas Operator | Apr 2003 |
| 30203 | Turner, Randy | Olney, TX 76374 | Oil & Gas Operator | Jan 2005 |
| 30204 | Turnkey E&P Corporation | | Oil & Gas Operator | Dec 2010 |
| 30205 | Turntable Energy Inc | Ponca City, OK 74604 | Oil & Gas Operator | Apr 2025 |
| 30206 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | May 2025 |
| 30207 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 30208 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 30209 | Turrentine Oil And Gas | Levelland, TX 79336 | Oil & Gas Operator | Feb 1996 |
| 30210 | Turtle Mountain Gas & Oil, Inc. | | Oil & Gas Operator | Oct 2006 |
| 30211 | Tuscany Deli & Meats, Inc. | Fredonia, NY 14063 | Gas Operator | Dec 2024 |
| 30212 | Tuscany Gas Limited Liability Company | | Gas Operator | Dec 2021 |
| 30213 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 30214 | Tuscola Energy Inc | | Oil & Gas Operator | Jun 2025 |
| 30215 | Tuskar (Texas), Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2016 |
| 30216 | Tussel Clarence Jr | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2019 |
| 30217 | Tutcher, Dan C. | Houston, TX 77002 | Oil Operator | Dec 2004 |
| 30218 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 30219 | Tuthill S Keith & Bill Barbee | Amarillo, TX 79101-1427 | Oil & Gas Operator | Dec 2004 |
| 30220 | Tuway Oil, Inc | | Oil & Gas Operator | Jun 2006 |
| 30221 | TW Phillips Gas Supply Corp | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2011 |
| 30222 | TWC Oil Company | | Oil Operator | Jan 2025 |
| 30223 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 30224 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | May 2025 |
| 30225 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Jul 2025 |
| 30226 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Jul 2025 |
| 30227 | Twin Arrow Inc | Rangely, CO 81648 | Oil & Gas Operator | Sep 2009 |
| 30228 | Twin City Gas | | Gas Operator | Nov 1997 |
| 30229 | Twin Eagle Petro | | Oil Operator | Aug 1990 |
| 30230 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 30231 | Twin M, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Mar 2025 |
| 30232 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Jul 2025 |
| 30233 | Twin Oil Partnership LLC | | Oil Operator | Dec 2024 |
| 30234 | Twin Star Petrol | | Oil & Gas Operator | Jan 1989 |
| 30235 | Twiner Oil & Gas Corporation | | Oil & Gas Operator | Oct 1988 |
| 30236 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2024 |
| 30237 | Twinoco | Caney, KS 67333 | Oil Operator | Nov 1996 |
| 30238 | Twins Oil Co. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2025 |
| 30239 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 30240 | Twisted Resources Inc | Blanchard, OK 73010-8463 | Oil & Gas Operator | Apr 2025 |
| 30241 | TWM Production Co., A General Partnership | Chanute, KS 66720 | Oil Operator | Dec 2024 |
| 30242 | Two Bay Petroleum | | Oil & Gas Operator | Dec 2010 |
| 30243 | Two Bayous, Inc. | | Oil & Gas Operator | Dec 2024 |
| 30244 | Two Bit Operating Company LLC | Fort Worth, TX 76110 | Oil & Gas Operator | Jul 2025 |
| 30245 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 30246 | Two Forks Operating LLC | Ponca City, OK 74601-7815 | Oil & Gas Operator | Apr 2025 |
| 30247 | Two Gems Company | McAlester, OK 74502-1996 | Oil & Gas Operator | Apr 2025 |
| 30248 | Two Oaks Operating Company, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2008 |
| 30249 | Two P Partners, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 30250 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 30251 | Twojo, Inc. | Longview, TX 75601 | Oil & Gas Operator | Nov 1996 |
| 30252 | TX Heat Of The Permian Basin Inc | Odessa, TX 79768 | Oil & Gas Operator | Dec 2021 |
| 30253 | TX Lone Star Operating Co, LLC | Sulphur SPGS, TX 75483 | Oil & Gas Operator | Jul 2025 |
| 30254 | TX Petroleum Company | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 1996 |
| 30255 | Txco Resources Inc. | San Antonio, TX 78280 | Oil & Gas Operator | Jul 2025 |
| 30256 | Txla Energy, Inc. | Houston, TX 77018 | Oil & Gas Operator | Jul 2025 |
| 30257 | Txo Prod Corp.-Arkla Expl. Co. | | Oil & Gas Operator | Dec 1990 |
| 30258 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 30259 | Txo Production Corp/Amh O&G Co | | Oil & Gas Operator | Dec 1990 |
| 30260 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 30261 | Txok Texas Energy Resources,L.P. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2008 |
| 30262 | Txon Partners, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2017 |
| 30263 | TXP Operating Company | | Oil & Gas Operator | Jul 1992 |
| 30264 | TXP, Incorporated | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2025 |
| 30265 | Txu Fuel Company | Dallas, TX 75201 | Oil & Gas Operator | May 2004 |
| 30266 | Txu Gas Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2004 |
| 30267 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |
| 30268 | TXX Operating LLC | Shreveport, LA 71133 | Oil & Gas Operator | Jul 2025 |
| 30269 | Ty-Tex Exploration, Inc. | Tyler, TX 75711 | Oil Operator | Dec 2000 |
| 30270 | Tyco Incorporate | | Oil & Gas Operator | Oct 1995 |
| 30271 | Tyco Oil Co. | | Oil Operator | Jan 2025 |
| 30272 | Tyco Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Jul 2025 |
| 30273 | Tyco, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jan 1998 |
| 30274 | Tygr Operating Company, LLC | | Oil & Gas Operator | Nov 2024 |
| 30275 | Tyl Oil | Canon City, CO 81212 | Gas Operator | May 1994 |
| 30276 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 30277 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |
| 30278 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 30279 | Tyler Production, LLC | | Oil & Gas Operator | Jul 2013 |
| 30280 | Tyler Rockies Exploration LTD | Tyler, TX 75710-0119 | Oil & Gas Operator | May 2025 |
| 30281 | Tyler, Scott A | | Oil & Gas Operator | Apr 2025 |
| 30282 | Tyler, Steven Lee | | Oil Operator | May 2014 |
| 30283 | Tyluka Operations, LLC | Hays, KS 67601 | Oil Operator | Nov 2024 |
| 30284 | Tyner Texas Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Jul 2025 |
| 30285 | Tyrex Oil Company | Casper, WY 82602 | Oil & Gas Operator | May 1997 |
| 30286 | Tyro Oil Develop | | Oil Operator | Jul 1991 |
| 30287 | Tyrok | | Oil & Gas Operator | Nov 2010 |
| 30288 | Tysco Oil And Gas Corp. | | Oil & Gas Operator | Dec 2024 |
| 30289 | Tyson Gary | Hobart, OK 73651-6413 | Oil & Gas Operator | Mar 2018 |
| 30290 | Tyson Oil Co. | | Oil Operator | Jan 2025 |
| 30291 | Tyson Olan | Hobart, OK 73651-6413 | Oil & Gas Operator | Apr 2015 |
| 30292 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |
| 30293 | U Bee Tea Production LLC | Culbertson, MT 59218 | Oil & Gas Operator | May 2025 |
| 30294 | U R C C | | Oil & Gas Operator | Jun 1991 |
| 30295 | U S Department Of Energy | | Oil & Gas Operator | Apr 1999 |
| 30296 | U S Drilling Company Inc | Holdenville, OK 74848-0913 | Oil & Gas Operator | Mar 2017 |
| 30297 | U S Energy Corp. Of Amer. Inc. | Ranger, TX 76470 | Oil & Gas Operator | Jul 2025 |
| 30298 | U S Exploraton Liq Trust | | Oil & Gas Operator | Oct 1994 |
| 30299 | U S Liquids Of La., L.P. | | Oil Operator | Apr 2014 |
| 30300 | U V Industries | | Oil & Gas Operator | Jan 1993 |