| 28501 | Tex-Well Oil & Gas Corp. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 28502 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 28503 | Texacal, Inc. | Newport Beach, CA 92660 | Oil & Gas Operator | Apr 2026 |
| 28504 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Apr 2026 |
| 28505 | Texaco Explorati | | Oil & Gas Operator | Dec 1996 |
| 28506 | Texaco Exploration & Prod | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
| 28507 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Dec 2025 |
| 28508 | Texaco Exploration & Production Inc N W | Farmington, NM 87401 | Oil & Gas Operator | Aug 1995 |
| 28509 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 28510 | Texaco Inc & A.C. Glassell Jr | | Oil & Gas Operator | Aug 1980 |
| 28511 | Texaco Oils Inc | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 28512 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 28513 | Texaco Seaboard, Inc. | | Gas Operator | Sep 1980 |
| 28514 | Texaco USA - Mor | | Oil Operator | Aug 1988 |
| 28515 | Texada Resources, Inc. | | Oil & Gas Operator | Dec 1992 |
| 28516 | Texakoma E & P, LLC | Plano, TX 75024 | Oil & Gas Operator | Apr 2026 |
| 28517 | Texakoma Exploration & Production LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 28518 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 28519 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Mar 2025 |
| 28520 | Texakoma Opr LP | Plano, TX 75024-6679 | Oil & Gas Operator | Dec 2012 |
| 28521 | Texakota | | Oil & Gas Operator | Mar 1995 |
| 28522 | Texakota, Inc. | Houston, TX 77098 | Oil & Gas Operator | Mar 2021 |
| 28523 | Texan Petroleum Corporation | Dallas, TX 75204 | Oil & Gas Operator | Oct 2004 |
| 28524 | Texan Production | Pearsall, TX 78061 | Oil & Gas Operator | Aug 2003 |
| 28525 | Texan Production Company, Inc. | Canyon Lake, TX 78133 | Oil & Gas Operator | Apr 2026 |
| 28526 | Texana Operating Company | Houston, TX 77090 | Oil & Gas Operator | Apr 2026 |
| 28527 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 28528 | Texas American Resources Company | Austin, TX 78701 | Oil & Gas Operator | Apr 2026 |
| 28529 | Texas City Refining, Inc. | | Oil & Gas Operator | Nov 1988 |
| 28530 | Texas Coastal Resources LLC | Fairhope, AL 36532 | Oil Operator | Apr 2026 |
| 28531 | Texas Concho Operating Co. | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1999 |
| 28532 | Texas Consolidated Pet. Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Apr 2026 |
| 28533 | Texas Crude & Dale Gas Expl | | Oil & Gas Operator | Dec 1984 |
| 28534 | Texas Crude Energy, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 2012 |
| 28535 | Texas Crude Exploration Inc | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 1992 |
| 28536 | Texas Crude Oil Co. | | Oil & Gas Operator | Dec 1984 |
| 28537 | Texas Crude Oil Co. Et Al | | Oil & Gas Operator | May 1992 |
| 28538 | Texas Crude Oil, Inc. | | Oil & Gas Operator | Dec 1984 |
| 28539 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 28540 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 28541 | Texas Crude-Rebstock & Reeves | | Oil & Gas Operator | Feb 1980 |
| 28542 | Texas Crude-Wainoco-Hilliard | | Oil & Gas Operator | Jul 1978 |
| 28543 | Texas Eastern Skyline Oil | Houston, TX 77252 | Oil & Gas Operator | Jan 1987 |
| 28544 | Texas Eastern Transm. Corp. | | Oil & Gas Operator | Dec 2002 |
| 28545 | Texas Energen Inc. | Austin, TX 78731 | Oil & Gas Operator | Apr 2026 |
| 28546 | Texas Energies I | | Oil & Gas Operator | Aug 1994 |
| 28547 | Texas Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Aug 1998 |
| 28548 | Texas Energy & Environmental | Houston, TX 77070 | Oil & Gas Operator | Nov 1998 |
| 28549 | Texas Energy & Environmental Inc | Houston, TX 77269 | Oil & Gas Operator | Oct 1998 |
| 28550 | Texas Energy Mutual LLC | Grapevine, TX 76051-8145 | Oil Operator | Jun 2018 |
| 28551 | Texas Energy Operations, LC | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2026 |
| 28552 | Texas Energy Sources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2008 |
| 28553 | Texas Energy Trust Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2016 |
| 28554 | Texas Exploration & Prod. Co. | Gainesville, TX 76240 | Oil & Gas Operator | Apr 1996 |
| 28555 | Texas Fuel Company | Galveston, TX 77550 | Oil & Gas Operator | Apr 2026 |
| 28556 | Texas Gas Exploration Corp. | | Oil & Gas Operator | Nov 1986 |
| 28557 | Texas Gas Resources, Inc. | Houston, TX 77292 | Oil & Gas Operator | Jul 2009 |
| 28558 | Texas Gas Transmission Corp. | | Oil Operator | Aug 2003 |
| 28559 | Texas Gas Transmission, LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2024 |
| 28560 | Texas General Petroleum Corp | | Oil & Gas Operator | Aug 1984 |
| 28561 | Texas Gulf Gas Corporation | Fayetteville, TX 78940 | Oil & Gas Operator | Jun 2005 |
| 28562 | Texas Hydrogen Energy Corp. | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 28563 | Texas Ind. Exploration, Inc. | | Oil & Gas Operator | Oct 2001 |
| 28564 | Texas Independent Explor LTD. | Houston, TX 77024 | Oil & Gas Operator | Apr 2026 |
| 28565 | Texas Independent Explor., Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 28566 | Texas Independent Exploration LP | Houston, TX 77024 | Oil & Gas Operator | Mar 2017 |
| 28567 | Texas Independent Oil Co., LLC | Argyle, TX 76226 | Oil & Gas Operator | Apr 2026 |
| 28568 | Texas International Oper., LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2013 |
| 28569 | Texas International Resource LLC | Allen, TX 75013 | Oil Operator | Apr 2026 |
| 28570 | Texas Investments | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 28571 | Texas Keystone Inc | Oakmont, PA 15139-2072 | Oil & Gas Operator | Nov 2017 |
| 28572 | Texas Land & Petro Co., LLC | Carrollton, TX 75010 | Oil & Gas Operator | Apr 2026 |
| 28573 | Texas Land & Trading Co, Inc. | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 28574 | Texas Lone Star Petroleum Corp. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2013 |
| 28575 | Texas M.O.R., Inc. | Corsicana, TX 75109 | Oil Operator | Sep 2013 |
| 28576 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 28577 | Texas Meridian Res. Expl., Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 1998 |
| 28578 | Texas Mineral Group | Midland, TX 79705 | Oil & Gas Operator | Aug 2013 |
| 28579 | Texas Moran Exploration Company | Houston, TX 77098 | Oil & Gas Operator | Jun 2023 |
| 28580 | Texas Offshore Operations, LLC | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 2026 |
| 28581 | Texas Oil & Gas | Denver, CO 80264 | Oil & Gas Operator | Oct 1981 |
| 28582 | Texas Oil & Gas Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 28583 | Texas Oil And Gas Operating, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Apr 2026 |
| 28584 | Texas Oil Company, The | Houston, TX 77018 | Oil & Gas Operator | Aug 2006 |
| 28585 | Texas Oil Resources Oper, LLC | Houston, TX 77024 | Oil Operator | Apr 2026 |
| 28586 | Texas Onshore Energy, Inc. | Austin, TX 78704 | Oil & Gas Operator | Apr 2026 |
| 28587 | Texas Operating & Consult., LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2018 |
| 28588 | Texas Operating Partners LLC | Tomball, TX 77377 | Oil & Gas Operator | Apr 2026 |
| 28589 | Texas Pacific Oil Co. | | Oil & Gas Operator | Dec 1980 |
| 28590 | Texas Petroleum Investment Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 28591 | Texas Pharchem Inc. | Abilene, TX 79601 | Oil & Gas Operator | Apr 2019 |
| 28592 | Texas Presco, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2025 |
| 28593 | Texas Rayco Inc. | Palmetto, FL 34221 | Oil & Gas Operator | Apr 2026 |
| 28594 | Texas Reexploration Operating LC | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 2026 |
| 28595 | Texas Refining, Inc. | Houston, TX 77057 | Oil & Gas Operator | Aug 2003 |
| 28596 | Texas Royalty Corp. | Austin, TX 78746 | Oil & Gas Operator | Apr 2026 |
| 28597 | Texas Sands Resources, LLC | Abilene, TX 79603 | Oil Operator | Apr 2026 |
| 28598 | Texas Secondary Oil Corporation | Devine, TX 78016 | Oil & Gas Operator | Apr 2026 |
| 28599 | Texas Shallow Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 28600 | Texas South Operating Co, Inc. | Houston, TX 77027 | Oil Operator | Apr 2026 |