| 11501 | Tracy Operating Co., LLC | Rockdale, TX 76567 | Oil & Gas Operator | Dec 2025 |
| 11502 | Tracy Production | Lindale, TX 75771 | Oil & Gas Operator | Dec 2025 |
| 11503 | Tradestar Energy, Inc. | Hot Springs, AR 71913 | Oil Operator | Feb 2021 |
| 11504 | Tradition Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 11505 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 11506 | Trail Mountain, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2016 |
| 11507 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Nov 2025 |
| 11508 | Trail Ridge Energy PRTNS II LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jun 2017 |
| 11509 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Nov 2025 |
| 11510 | Trailblazer Energy Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 11511 | Trailblazer Oil & Gas LLC | Goliad, TX 77963 | Oil & Gas Operator | Dec 2025 |
| 11512 | Trailhead Exploration, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 11513 | Trans Terra Corp., International | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2009 |
| 11514 | Trans Texas Minerals Company | Austin, TX 78714 | Oil & Gas Operator | Aug 1999 |
| 11515 | Trans-Pecos Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 11516 | Trans-Tex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 11517 | Trans-Texas Energy Group LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2015 |
| 11518 | Transamerica Energy Corp. | Atlanta, GA 30356 | Oil & Gas Operator | Dec 2025 |
| 11519 | Transamerican Natural Gas Corp. | Houston, TX 77032 | Oil & Gas Operator | Aug 2000 |
| 11520 | Transatlantic Petr (USA) Corp. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 11521 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 11522 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 11523 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 11524 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Dec 2025 |
| 11525 | Transpacific Energy, LLC | Katy, TX 77450 | Oil & Gas Operator | Dec 2025 |
| 11526 | Transpetco I | Shreveport, LA 71101 | Oil & Gas Operator | May 2009 |
| 11527 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 11528 | Trap Rock Oil Company | Cambridge, MA 02138 | Oil & Gas Operator | Nov 2005 |
| 11529 | Trap Rock Oil, LTD. | Houston, TX 77005 | Oil & Gas Operator | Dec 2025 |
| 11530 | Traton Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Mar 2019 |
| 11531 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 11532 | Travers Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 11533 | Travis | Houston, TX 77057 | Oil Operator | Dec 2025 |
| 11534 | Travis Operating, LLC | Kingwood, TX 77345 | Oil & Gas Operator | Dec 2025 |
| 11535 | Travis, J. J., Trustee | Rockport, TX 78382 | Oil & Gas Operator | Dec 1996 |
| 11536 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Dec 2025 |
| 11537 | Treadstone Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2016 |
| 11538 | Treadstone Energy PRTNR Op, LLC | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 11539 | Treco Oil Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 11540 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 11541 | Trejim Operators, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 11542 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 11543 | Trek Exploration, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 11544 | Trek Oil & Gas, Inc | Houston, TX 77002 | Oil Operator | Mar 1998 |
| 11545 | Trek Petroleum Company, Inc. | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 11546 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Dec 2025 |
| 11547 | Tren Energy LLC | El Paso, TX 79912 | Oil & Gas Operator | Dec 2025 |
| 11548 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 11549 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11550 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 11551 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 11552 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Dec 2025 |
| 11553 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 11554 | Tres Roughneckas WTX LLC | MC Camey, TX 79752 | Oil Operator | Dec 2025 |
| 11555 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 11556 | Trestle Creek Properties, LLC | Manchaca, TX 78652 | Oil & Gas Operator | Dec 2025 |
| 11557 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 11558 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 11559 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 11560 | Trey Services, Inc. | Midland, TX 79711 | Oil & Gas Operator | Dec 1996 |
| 11561 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 11562 | Tri City Oil Co., LLC | Winnie, TX 77665 | Oil Operator | Dec 2025 |
| 11563 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Dec 2025 |
| 11564 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 11565 | Tri Star Operating, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jan 2002 |
| 11566 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Dec 2025 |
| 11567 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 11568 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 11569 | Tri-Dyne Resources, Inc. | Southern Pine, NC 28387 | Oil & Gas Operator | Feb 2000 |
| 11570 | Tri-Ex Petroleum, L.P. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2013 |
| 11571 | Tri-Force Operating, L.L.C. | Royse City, TX 75189 | Oil & Gas Operator | Dec 2025 |
| 11572 | Tri-K Production Company, Inc. | Olney, TX 76374 | Oil & Gas Operator | Apr 1996 |
| 11573 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 11574 | Tri-State Resources, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2012 |
| 11575 | Tri-State Sales & Production | Rodessa, LA 71069 | Oil & Gas Operator | Dec 2008 |
| 11576 | Tri-Tex Exploration LTD | Abilene, TX 79608 | Oil Operator | Apr 2019 |
| 11577 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 11578 | Tri-W Oil | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 11579 | Tri-W Oil, Inc. | Luling, TX 78648 | Oil Operator | Apr 2007 |
| 11580 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 11581 | Triad O&G, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 11582 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 11583 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 11584 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 11585 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Dec 2025 |
| 11586 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2024 |
| 11587 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 11588 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 11589 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 11590 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2025 |
| 11591 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Dec 2025 |
| 11592 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 11593 | Triforce Energy LLC | Littleton, CO 80122 | Oil & Gas Operator | Dec 2025 |
| 11594 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 11595 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 11596 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 11597 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 11598 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 11599 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Dec 2025 |
| 11600 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |