| 4701 | Texlan Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Nov 1994 |
| 4702 | Texoil Company | | Oil & Gas Operator | Dec 2000 |
| 4703 | Texoma Production Co | | Oil & Gas Operator | Jun 1986 |
| 4704 | Texona Petroleum Corporation | Houston, TX 77084 | Oil & Gas Operator | Aug 2003 |
| 4705 | Texstar Petroleum, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2000 |
| 4706 | TGNR TVL LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 4707 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 4708 | Tharp Operating Company | Houston, TX 77070 | Oil & Gas Operator | Nov 2014 |
| 4709 | The B&B Oil Co Of Sabine Inc | | Oil Operator | Jun 1982 |
| 4710 | The B&C Corp-Imp Amer MGT Co | | Oil & Gas Operator | Aug 1981 |
| 4711 | The Ballard & Cordell Corp | | Oil & Gas Operator | Feb 1982 |
| 4712 | The Bering Company | | Oil Operator | Jul 1979 |
| 4713 | The Cornell Corporation | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 1993 |
| 4714 | The Exploration Co. Of La, Inc | | Oil & Gas Operator | Nov 1987 |
| 4715 | The George R Brown Partnership | | Oil & Gas Operator | Jun 1992 |
| 4716 | The Goro Corporation | | Oil & Gas Operator | Jul 1978 |
| 4717 | The Harvest Group, LLC | | Oil & Gas Operator | May 2011 |
| 4718 | The Hunter Company, Inc. | | Oil & Gas Operator | Sep 1985 |
| 4719 | The Maurice L. Brown Company | | Oil & Gas Operator | Aug 1987 |
| 4720 | The Meridian Res. & Exp. LLC | | Oil & Gas Operator | Sep 2010 |
| 4721 | The Meridian Resource & Exp Co | | Oil & Gas Operator | Dec 2000 |
| 4722 | The Pioneer | | Gas Operator | Feb 2008 |
| 4723 | The Romanoff Corporation | | Oil & Gas Operator | Nov 1989 |
| 4724 | The Southern Louisiana Expl. Company LLC | | Oil & Gas Operator | Nov 2024 |
| 4725 | The Stone Oil Corporation | | Oil & Gas Operator | May 1985 |
| 4726 | The Stone Petro Corp-Toce Oil | | Oil & Gas Operator | Oct 1984 |
| 4727 | The Superior Oc WM Scully Etal | | Oil & Gas Operator | Apr 1986 |
| 4728 | The Superior Oil Co & Pel-Tex | | Oil & Gas Operator | Apr 1986 |
| 4729 | The Superior Oil Co - Tesoro | | Oil & Gas Operator | Apr 1986 |
| 4730 | The Termo Company | Long Beach, CA 90801 | Oil & Gas Operator | Dec 2025 |
| 4731 | The WM G Helis Company, L.L.C. | | Oil & Gas Operator | Nov 2003 |
| 4732 | Tholl Oil Company | | Oil Operator | Dec 2003 |
| 4733 | Thomas Aitken, Inc. | | Gas Operator | Dec 2024 |
| 4734 | Thomas Bell | | Oil Operator | Dec 1985 |
| 4735 | Thomas C. Hoffpauir | | Oil & Gas Operator | Mar 1991 |
| 4736 | Thomas C. Hoffpauir, Inc. | | Oil & Gas Operator | Jan 1981 |
| 4737 | Thomas E. Slack | | Oil Operator | Mar 2003 |
| 4738 | Thomas G. Easterling | | Oil Operator | Jun 1989 |
| 4739 | Thomas Turman | | Oil & Gas Operator | Dec 1991 |
| 4740 | Thor Production Co. | | Oil Operator | May 1997 |
| 4741 | Thor-Max Operating, Inc. | Plano, TX 75025 | Oil & Gas Operator | Feb 2026 |
| 4742 | Thornton & Brooks, Inc. | | Oil & Gas Operator | Oct 1990 |
| 4743 | Thornton Page Natural Gas | | Oil & Gas Operator | Dec 2024 |
| 4744 | Thrall Texas Oil, LLC | | Oil & Gas Operator | Jan 2025 |
| 4745 | Three "N" One Production | | Oil & Gas Operator | Dec 2011 |
| 4746 | Three D Petroleum LLC | | Oil Operator | Dec 2024 |
| 4747 | Three S & T Oil Co., Inc. | | Oil & Gas Operator | May 1985 |
| 4748 | Three Sisters Investments, LTD | | Oil & Gas Operator | Oct 1989 |
| 4749 | Three Sisters Petroleum, Inc. | Oil City, LA 71061 | Oil & Gas Operator | Jan 2025 |
| 4750 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 4751 | THT Operating Company | | Oil & Gas Operator | Jul 1990 |
| 4752 | Thunderstone Exploration, Inc. | | Oil & Gas Operator | Oct 2006 |
| 4753 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 4754 | Tideland Industries, Inc. | | Oil & Gas Operator | Dec 1989 |
| 4755 | Tideway Oil Programs, Inc. | | Oil & Gas Operator | Oct 1980 |
| 4756 | Tierra Petroleum Corp. | | Oil & Gas Operator | Jun 1987 |
| 4757 | Tigco Oil & Gas Co., Inc. | | Oil & Gas Operator | Nov 2014 |
| 4758 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 4759 | Tiger Oil International, Inc | | Oil & Gas Operator | Dec 1978 |
| 4760 | Tiger Petroleum | | Oil Operator | Sep 2002 |
| 4761 | Tigner Walker | | Oil & Gas Operator | Dec 2021 |
| 4762 | Tigner Walker Et Al | | Oil & Gas Operator | Aug 2000 |
| 4763 | Tillman A. Rousse | | Oil Operator | Jan 1990 |
| 4764 | Tillman A. Rousse, Inc. | | Oil Operator | Apr 2001 |
| 4765 | Tillman J. McIntyre | | Oil Operator | Dec 1987 |
| 4766 | Tim Brookover | | Oil & Gas Operator | Dec 2005 |
| 4767 | Time Energy, L.L.C. | | Oil & Gas Operator | Nov 2020 |
| 4768 | Tipco | Shreveport, LA 71104-3047 | Oil & Gas Operator | May 1988 |
| 4769 | Tipco Operating Co. | Marshall, TX 75671 | Oil & Gas Operator | Feb 2026 |
| 4770 | Tipperary Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 4771 | Titan Oil Corp. | | Oil & Gas Operator | Jan 2025 |
| 4772 | Tma Production, LLC | | Oil Operator | Dec 2024 |
| 4773 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Feb 2026 |
| 4774 | TNC Energy, LLC | Lubbock, TX 79401 | Oil & Gas Operator | Nov 2016 |
| 4775 | Toc, Inc. (TN) | | Oil Operator | Apr 1995 |
| 4776 | Toce Energy, L.L.C. | | Oil & Gas Operator | Dec 2017 |
| 4777 | Toce Oil Company | | Oil & Gas Operator | Dec 2014 |
| 4778 | Todd Bertolet | | Gas Operator | Apr 1999 |
| 4779 | Todd Bertolet & Redco | | Gas Operator | Aug 1991 |
| 4780 | Todd Oil Corp. Of La. Inc. | | Oil & Gas Operator | Jul 2000 |
| 4781 | Todd Oil Production Co | | Oil Operator | Aug 2001 |
| 4782 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 4783 | Tolar Corporation | | Oil & Gas Operator | Sep 1999 |
| 4784 | Tolar Energy, L.L.C. | | Oil & Gas Operator | Dec 2001 |
| 4785 | Tolbert & Associates | | Oil Operator | Dec 2024 |
| 4786 | Tolbert Et Al | | Oil Operator | Jun 2000 |
| 4787 | Tolbert Well Service | | Oil Operator | Jan 2025 |
| 4788 | Toledo Bend Well Service | | Oil Operator | Aug 2000 |
| 4789 | Tom Brown Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
| 4790 | Tom Littlepage Oil Properties | | Oil & Gas Operator | Dec 1984 |
| 4791 | Tom Moore Trustee | | Oil Operator | Apr 1986 |
| 4792 | Tom West | | Oil & Gas Operator | Nov 1989 |
| 4793 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 4794 | Tommy A. Paul | | Oil Operator | Oct 2020 |
| 4795 | Tommy Joe Jenny | | Gas Operator | Nov 2024 |
| 4796 | Topaz Oil Company | Diboll, TX 75941 | Oil & Gas Operator | Apr 1994 |
| 4797 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 4798 | Torch Oil & Gas Company | Houston, TX 77010 | Oil & Gas Operator | Aug 1997 |
| 4799 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 4800 | Torch Opr Co-Stone Petr Corp | | Oil & Gas Operator | Jul 1997 |