| 4601 | Tammany Oil & Gas LLC | | Oil & Gas Operator | Feb 2005 |
| 4602 | Tana Exploration Company LLC | Dallas, TX 75219 | Oil & Gas Operator | Aug 2021 |
| 4603 | Tanner Oil, Inc | | Oil & Gas Operator | Nov 2024 |
| 4604 | Tanos Exploration II, LLC | Tyler, TX 75701 | Oil & Gas Operator | Sep 2023 |
| 4605 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 4606 | Target Oil & Gas, Inc. | | Oil & Gas Operator | Nov 2011 |
| 4607 | Tarpon Oil Of Texas | | Oil & Gas Operator | Aug 1994 |
| 4608 | Tatco, Inc. | | Oil & Gas Operator | May 1991 |
| 4609 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 4610 | Taurus Petr-Fieldcrest Petr | | Oil & Gas Operator | Apr 1989 |
| 4611 | Taurus Petroleum | | Oil & Gas Operator | Jul 1987 |
| 4612 | Taylor Energy Co. | | Oil & Gas Operator | May 1991 |
| 4613 | Taylor-McIlhenny Oper. Co., Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Jan 1996 |
| 4614 | TBR Operating Company Inc. | | Gas Operator | Dec 2024 |
| 4615 | Tchefuncte Natural Resources, L.L.C. | | Oil & Gas Operator | Aug 2011 |
| 4616 | TD & Associates, Inc. | | Oil & Gas Operator | Jun 1998 |
| 4617 | TDC Energy Corporation | | Oil & Gas Operator | Dec 2001 |
| 4618 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 4619 | Teal Petroleum Co. | | Oil & Gas Operator | Sep 1978 |
| 4620 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Feb 2026 |
| 4621 | Tebco Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 4622 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 4623 | Tedco | | Gas Operator | Nov 1988 |
| 4624 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
| 4625 | Teel 78 A | | Gas Operator | Dec 1980 |
| 4626 | Teel 79a | | Gas Operator | Dec 1980 |
| 4627 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 4628 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 4629 | Tellurian Operating LLC | | Oil & Gas Operator | Jun 2024 |
| 4630 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 4631 | Tellus Operating Group, LLC | | Oil & Gas Operator | Nov 2025 |
| 4632 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Feb 2026 |
| 4633 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 4634 | Temex Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 4635 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 4636 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 4637 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Nov 2025 |
| 4638 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 4639 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2025 |
| 4640 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 4641 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 4642 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2024 |
| 4643 | Tensas Delta Expl Co., LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 4644 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 4645 | Tensas Exploraton & Production Co LLC | | Oil & Gas Operator | Nov 2009 |
| 4646 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 4647 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 4648 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 4649 | Termo Company Of Texas | | Oil & Gas Operator | Dec 1986 |
| 4650 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
| 4651 | Terral D Hinds | | Oil Operator | Mar 2012 |
| 4652 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
| 4653 | Terronne Petroleum Corporation | | Oil & Gas Operator | Nov 2024 |
| 4654 | Terry Development, Inc. | | Oil & Gas Operator | Aug 1992 |
| 4655 | Terry Oil Company LLC | | Oil Operator | Dec 2024 |
| 4656 | Tervita, LLC | | Oil Operator | May 2021 |
| 4657 | Tesla Resources, Inc. | | Oil & Gas Operator | Aug 1996 |
| 4658 | Tesoro E&P Company, L.P. | San Antonio, TX 78216 | Oil & Gas Operator | Jan 2000 |
| 4659 | Tesoro Petroleum Corporation | | Oil & Gas Operator | May 1982 |
| 4660 | Tesoro-Bintliff | | Oil & Gas Operator | Nov 1982 |
| 4661 | Tex-Con-Brehm-Basin Expl. | | Oil & Gas Operator | May 1990 |
| 4662 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 4663 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Feb 2026 |
| 4664 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 4665 | Texaco Inc & A.C. Glassell Jr | | Oil & Gas Operator | Aug 1980 |
| 4666 | Texaco Oils Inc | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 4667 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 4668 | Texada Resources, Inc. | | Oil & Gas Operator | Dec 1992 |
| 4669 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Mar 2025 |
| 4670 | Texana Operating Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2026 |
| 4671 | Texas City Refining, Inc. | | Oil & Gas Operator | Nov 1988 |
| 4672 | Texas Crude & Dale Gas Expl | | Oil & Gas Operator | Dec 1984 |
| 4673 | Texas Crude Exploration Inc | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 1992 |
| 4674 | Texas Crude Oil Co. | | Oil & Gas Operator | Dec 1984 |
| 4675 | Texas Crude Oil Co. Et Al | | Oil & Gas Operator | May 1992 |
| 4676 | Texas Crude Oil, Inc. | | Oil & Gas Operator | Dec 1984 |
| 4677 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 4678 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 4679 | Texas Crude-Rebstock & Reeves | | Oil & Gas Operator | Feb 1980 |
| 4680 | Texas Crude-Wainoco-Hilliard | | Oil & Gas Operator | Jul 1978 |
| 4681 | Texas Eastern Skyline Oil Co. | | Oil & Gas Operator | Jan 1987 |
| 4682 | Texas Eastern Transm. Corp. | | Oil & Gas Operator | Dec 2002 |
| 4683 | Texas Energy & Environmental Inc | Houston, TX 77269 | Oil & Gas Operator | Oct 1998 |
| 4684 | Texas Energy Oil & Gas Corp. | | Oil & Gas Operator | Sep 1982 |
| 4685 | Texas Gas Exploration Corp. | | Oil & Gas Operator | Nov 1986 |
| 4686 | Texas Gas Transmission Corp. | | Oil Operator | Aug 2003 |
| 4687 | Texas Gas Transmission, LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2024 |
| 4688 | Texas General Petroleum Corp | | Oil & Gas Operator | Aug 1984 |
| 4689 | Texas Ind. Exploration, Inc. | | Oil & Gas Operator | Oct 2001 |
| 4690 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 4691 | Texas Meridian Res. Expl., Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 1998 |
| 4692 | Texas Oil & Gas Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 4693 | Texas Pacific Oil Co. | | Oil & Gas Operator | Dec 1980 |
| 4694 | Texas Petroleum Investment Company | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 4695 | Texas T Oil Co. | | Oil & Gas Operator | Apr 1990 |
| 4696 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 4697 | Texeast Operating Co., Inc. | Farmers BRNCH, TX 75234 | Oil Operator | Feb 2026 |
| 4698 | Texegy Operating Company LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2024 |
| 4699 | Texex Petroleum Corporation | | Oil & Gas Operator | Dec 2024 |
| 4700 | Texla Operating Co | Jonesville, TX 75659 | Oil & Gas Operator | Feb 2026 |