| 28301 | T X P Inc Formerly Petrotech Inc | | Oil & Gas Operator | Jul 1992 |
| 28302 | T&R Energy Services | Pampa, TX 79065 | Oil Operator | Nov 2024 |
| 28303 | T&T Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 28304 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 28305 | T-5 Leasing, LLC | | Oil Operator | Dec 2013 |
| 28306 | T-Bar Exploration, Inc. | Sterling, KS 67579 | Oil Operator | Apr 1998 |
| 28307 | T-Bar-X Limited Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2005 |
| 28308 | T-Boc Inc. | | Oil & Gas Operator | Apr 2016 |
| 28309 | T-C Oil Company, LLC | Refugio, TX 78377 | Oil & Gas Operator | Nov 2024 |
| 28310 | T-D Oil Inc | Cement, OK 73017-0065 | Oil & Gas Operator | May 2020 |
| 28311 | T-K Exploration Company | Oklahoma City, OK 73102-7029 | Oil & Gas Operator | Mar 2015 |
| 28312 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 28313 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Jul 2024 |
| 28314 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2024 |
| 28315 | T-Rex Oil Inc | Broomfield, CO 80021 | Oil Operator | Feb 2011 |
| 28316 | T-Square Petroleum Co. | Rising Star, TX 76471 | Oil & Gas Operator | Nov 2024 |
| 28317 | T-Y Development Corp | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 28318 | T. A. Atkinson Opr. | | Gas Operator | Dec 1997 |
| 28319 | T. A. W. Company | Kingsbury, TX 78638 | Oil & Gas Operator | Nov 2024 |
| 28320 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | Nov 2024 |
| 28321 | T. C. Morrow Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 28322 | T. D. Tedder | | Oil Operator | Dec 1991 |
| 28323 | T. E. Adams Petroleum Corp. | | Oil & Gas Operator | Sep 2024 |
| 28324 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 28325 | T. J. Lundy | | Oil Operator | Jul 2024 |
| 28326 | T. J. Oil And Gas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 28327 | T. J. Operating Co., Inc. | | Oil & Gas Operator | Aug 1998 |
| 28328 | T. K. Stanley, Inc. | | Oil & Gas Operator | Jul 1982 |
| 28329 | T. L. J. Incorporated | Big Lake, TX 76932 | Oil & Gas Operator | Dec 1998 |
| 28330 | T. L. James & Co., Inc. | | Oil & Gas Operator | Oct 1992 |
| 28331 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 28332 | T. N. T. Energy Co. | Belcher, LA 71004 | Oil Operator | May 1991 |
| 28333 | T. N. T. Tribal - Luffey | | Gas Operator | Oct 1994 |
| 28334 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Aug 2024 |
| 28335 | T. R. Production, Inc. | Pilot Point, TX 76258 | Oil & Gas Operator | Jul 2021 |
| 28336 | T. T. Production, Inc. | Haviland, KS 67059 | Oil & Gas Operator | Feb 2008 |
| 28337 | T. W. Drilling Co. | Abilene, TX 79601 | Oil & Gas Operator | Aug 2002 |
| 28338 | T. W. McGuire & Associates, Inc. | | Oil & Gas Operator | Nov 2018 |
| 28339 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 28340 | T.B. Lanford Et Al | | Oil Operator | Apr 1987 |
| 28341 | T.C. Harris Pumping LLC | Hennessey, OK 73742 | Gas Operator | Aug 2024 |
| 28342 | T.C.G. Oil Co. | Iola, KS 66749 | Oil Operator | Sep 2009 |
| 28343 | T.C.G. Oil Co., A General Partnership | Laharpe, KS 66755 | Oil Operator | Aug 2009 |
| 28344 | T.D. Operating Company, Inc. | New Braunfels, TX 78130 | Oil & Gas Operator | Nov 1999 |
| 28345 | T.F. Well Service, L.L.C. | Iowa Park, TX 76367 | Oil Operator | Nov 2024 |
| 28346 | T.G.B., Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 28347 | T.J. Oil | | Oil Operator | Jul 2024 |
| 28348 | T.L.S. Oil Co. | Hawley, TX 79525 | Oil & Gas Operator | Nov 2024 |
| 28349 | T.M. Quaintance Crude Oil Production | Scio, NY 14880 | Oil Operator | Dec 2022 |
| 28350 | T.O. Greer Productions | | Oil & Gas Operator | Aug 2013 |
| 28351 | T.O.F., Inc. | | Oil & Gas Operator | Dec 2002 |
| 28352 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 28353 | T.W.O. (Taylor Well Operating) | Missoula, MT 59803 | Oil & Gas Operator | Aug 2024 |
| 28354 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 28355 | Tab Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 28356 | Tabbs Bay Production Company | Houston, TX 77019 | Oil Operator | Nov 2024 |
| 28357 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 28358 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |
| 28359 | Taber Oil Co | | Oil Operator | Sep 2018 |
| 28360 | Taber, Alan R. | La Vernia, TX 78121 | Oil Operator | Nov 2024 |
| 28361 | Taber, Grover E. Jr. | Cocoa, FL 32926 | Gas Operator | Dec 2023 |
| 28362 | Tabor Creek Oil Company | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 28363 | Tabor, Danny | Scottsville, KY 42164 | Oil Operator | Dec 2022 |
| 28364 | Tabula Rasa Energy, LLC | Allen, TX 75013 | Oil & Gas Operator | Dec 2020 |
| 28365 | Tacitus, LLC | Farmington, NM 87401 | Oil & Gas Operator | Sep 2024 |
| 28366 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 28367 | Tackett & Sons DRLG Contractors, Inc | Salyersville, , K 41465 | Oil & Gas Operator | Dec 2022 |
| 28368 | Tacor Resources Inc | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 28369 | Tactical Oil & Gas, LLC | Odessa, TX 79768 | Oil & Gas Operator | Nov 2024 |
| 28370 | Tactical Operating Company, LLC | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 28371 | Tadlock Properites | | Oil & Gas Operator | Jan 1994 |
| 28372 | Taft Investment Co., Inc. | Taft, TX 78390 | Oil Operator | Nov 2024 |
| 28373 | Taft Oil And Gas LLC | Bonham, TX 75418 | Oil & Gas Operator | Dec 2018 |
| 28374 | Tag Enterprises Inc | Shelocta, PA 15774-0310 | Gas Operator | Dec 2016 |
| 28375 | Tag Oil Co LLC | Ringling, OK 73456 | Oil & Gas Operator | Sep 2024 |
| 28376 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Nov 2024 |
| 28377 | Tag Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2021 |
| 28378 | Tag Team Resources LLC | Eufaula, OK 74432 | Oil & Gas Operator | Sep 2024 |
| 28379 | Taggart Oil Co., Inc. | | Oil Operator | Oct 1992 |
| 28380 | Tahiti PTRS Enrgy Solutions Corp | Long Beach, CA 90807 | Oil Operator | Nov 2024 |
| 28381 | Tahoe Corporation | | Gas Operator | Feb 2023 |
| 28382 | Tahoe Energy, Inc. | Midland, TX 79703 | Oil & Gas Operator | Jul 1996 |
| 28383 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 28384 | Tai Inc Dba Trendwell Antrim Inc | | Gas Operator | Aug 2024 |
| 28385 | Tailwater, Inc. | Oklahoma City, OK 73154 | Oil Operator | Jan 2024 |
| 28386 | Taines, Michael Enterprises | | Oil & Gas Operator | Dec 2021 |
| 28387 | Takacs, Ray W. | North Huntington, PA 15642 | Gas Operator | Dec 2023 |
| 28388 | Tal-Con, Inc. | Houston, TX 77279 | Oil & Gas Operator | Nov 2024 |
| 28389 | Talaria Oil & Gas LLC | Denver, CO 80203 | Oil Operator | Nov 2024 |
| 28390 | Talbert, Eugene Operating Co,Inc | Tyler, TX 75702 | Oil & Gas Operator | Dec 1997 |
| 28391 | Talbott Oil & Gas Co | Tuppers Plains, OH 45783 | Oil & Gas Operator | Dec 2000 |
| 28392 | Talbott, Stan C. | Midland, TX 79701 | Oil & Gas Operator | Feb 2005 |
| 28393 | Talbott, WM G | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 28394 | Talco Midstream Assets, LTD. | | Oil Operator | May 2017 |
| 28395 | Taleeho Energy Co. | Normangee, TX 77871 | Oil & Gas Operator | Jun 2003 |
| 28396 | Talisman Energy USA Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | May 2016 |
| 28397 | Talisman Resources, Inc. | Argyle, TX 76226 | Oil & Gas Operator | Mar 1995 |
| 28398 | Tall City Operations III LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2023 |
| 28399 | Tall City Operations LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2016 |
| 28400 | Tall Dune Resources, LLC | Boerne, TX 78006 | Oil & Gas Operator | Nov 2024 |