| 29701 | Transcontinental Gas Pipeline Co LLC | | Oil Operator | Jan 2025 |
| 29702 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 29703 | Transcontinental Oil & Gas Inc | Aurora, OH 44202 | Oil & Gas Operator | Dec 2024 |
| 29704 | Transcontinental Oil Corp. | | Oil & Gas Operator | Sep 1985 |
| 29705 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 29706 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 29707 | Transglobe Oil & Gas Corporation | Littleton, CO 801222710 | Oil & Gas Operator | Dec 1999 |
| 29708 | Transhorizon Energy Inc | Cheyenne, WY 82003 | Oil & Gas Operator | Jul 2023 |
| 29709 | Transit Energy Inc | North Lawrence, OH 44666 | Oil & Gas Operator | Dec 2024 |
| 29710 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Nov 2025 |
| 29711 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 29712 | Transpac Petroleum Inc. | | Oil & Gas Operator | Dec 1995 |
| 29713 | Transpacific Energy, LLC | Katy, TX 77450 | Oil & Gas Operator | Nov 2025 |
| 29714 | Transpetco I | Shreveport, LA 71101 | Oil & Gas Operator | May 2009 |
| 29715 | Transpetco Transport Company | Shreveport, LA 71101-5370 | Oil Operator | Jun 2008 |
| 29716 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 29717 | Transworld Expl. & Prod., Inc. | | Oil & Gas Operator | Mar 2004 |
| 29718 | Transworld Systems Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 29719 | Trap Rock Oil Company | Cambridge, MA 02138 | Oil & Gas Operator | Nov 2005 |
| 29720 | Trap Rock Oil, LTD. | Houston, TX 77005 | Oil & Gas Operator | Nov 2025 |
| 29721 | Trapp Oil Oper - | | Oil Operator | Aug 1989 |
| 29722 | Traton Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Mar 2019 |
| 29723 | Travco Well Servicing LLC | Okmulgee, OK 74447 | Oil Operator | Jul 2025 |
| 29724 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Nov 2025 |
| 29725 | Travell Energy, Inc | | Oil Operator | Dec 2023 |
| 29726 | Traver Oil & Gas Corporation | | Oil & Gas Operator | Sep 2000 |
| 29727 | Traver Oil Company | | Oil & Gas Operator | Sep 2000 |
| 29728 | Traver-Patterson Petroleum Inc | | Oil & Gas Operator | May 1990 |
| 29729 | Travers Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 29730 | Traverse Oil Co | | Oil & Gas Operator | Nov 1983 |
| 29731 | Traverse Oil Co And Federal Oil Co | | Oil & Gas Operator | Nov 1983 |
| 29732 | Travis | Houston, TX 77057 | Oil Operator | Nov 2025 |
| 29733 | Travis Coomer DRLG Co | | Oil Operator | Dec 2023 |
| 29734 | Travis E. Duren | | Oil Operator | Jul 1995 |
| 29735 | Travis Oil Co | Los Angeles, CA 90024 | Oil Operator | Jan 1990 |
| 29736 | Travis Operating, LLC | Kingwood, TX 77345 | Oil & Gas Operator | Nov 2025 |
| 29737 | Travis Peak Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 29738 | Travis, J. J., Trustee | Rockport, TX 78382 | Oil & Gas Operator | Dec 1996 |
| 29739 | Traxler, Joyce | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 29740 | Traynor Oil & Gas Inc | Claremont, CA 91711-2837 | Oil & Gas Operator | Jan 2024 |
| 29741 | TRC Cypress Group LLC | | Oil & Gas Operator | Aug 2025 |
| 29742 | TRC Operating Company Inc. | | Oil & Gas Operator | Sep 2025 |
| 29743 | Tre'J Exploration, Inc. | | Gas Operator | Dec 1991 |
| 29744 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Nov 2025 |
| 29745 | Treadstone Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2016 |
| 29746 | Treadstone Energy PRTNR Op, LLC | Katy, TX 77494 | Oil & Gas Operator | Nov 2025 |
| 29747 | Treat Howard | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2014 |
| 29748 | Trebole Operating Company | | Oil Operator | Jul 1979 |
| 29749 | Treco Oil Company | Albany, TX 76430 | Oil & Gas Operator | Nov 2025 |
| 29750 | Tredegar Properties, Inc. | | Oil Operator | Jun 1990 |
| 29751 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Nov 2025 |
| 29752 | Trees Oil Compan | | Oil Operator | Jan 1995 |
| 29753 | Trejim Operators, LLC | Pampa, TX 79065 | Oil & Gas Operator | Nov 2025 |
| 29754 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 29755 | Trek Exploration, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Nov 2025 |
| 29756 | Trek Oil & Gas, Inc | Houston, TX 77002 | Oil Operator | Mar 1998 |
| 29757 | Trek Operating, LLC | Tulsa, OK 741520098 | Oil & Gas Operator | Mar 2021 |
| 29758 | Trek Petroleum Company, Inc. | Midland, TX 79707 | Oil & Gas Operator | Nov 2025 |
| 29759 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Nov 2025 |
| 29760 | Tremo Corporation | Toronto, KS 66777 | Oil Operator | May 1998 |
| 29761 | Tren Energy LLC | El Paso, TX 79912 | Oil & Gas Operator | Nov 2025 |
| 29762 | Trenchco Inc | Shawnee, OK 74802-3577 | Oil & Gas Operator | Apr 2015 |
| 29763 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 29764 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 29765 | Trend Gas & Oil Inc | Jenks, OK 74037 | Oil & Gas Operator | Dec 2000 |
| 29766 | Trend Oil Co | Petaluma, CA 94954 | Oil & Gas Operator | Feb 2017 |
| 29767 | Trend Properties | Olathe, KS 66061 | Gas Operator | Dec 1996 |
| 29768 | Trendsetter Production Co, Inc | | Oil & Gas Operator | Jul 2008 |
| 29769 | Trendwell Energy Corporation | | Oil & Gas Operator | Sep 2025 |
| 29770 | Trenmor Gas & Oil Co LLC | Frazeysburg, OH 43822 | Oil Operator | Dec 2023 |
| 29771 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 29772 | Trenon Oil & Gas Inc | Oklahoma City, OK 73112-4279 | Oil & Gas Operator | Sep 1996 |
| 29773 | Trepco Production Company Inc | Yukon, OK 73099 | Oil & Gas Operator | Jul 2025 |
| 29774 | Trepel Petroleum Exploration & | | Oil & Gas Operator | Apr 2014 |
| 29775 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 29776 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Nov 2025 |
| 29777 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 29778 | Tres Roughneckas WTX LLC | MC Camey, TX 79752 | Oil Operator | Nov 2025 |
| 29779 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2025 |
| 29780 | Tresco Energy LLC | Enid, OK 73703-3002 | Oil & Gas Operator | Aug 2025 |
| 29781 | Tresor Petroleum | | Oil & Gas Operator | Sep 1987 |
| 29782 | Tressler John R & IVa M | | Oil Operator | Apr 1989 |
| 29783 | Trestle Creek Properties, LLC | Manchaca, TX 78652 | Oil & Gas Operator | Nov 2025 |
| 29784 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 29785 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 29786 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 29787 | Trey Services, Inc. | Midland, TX 79711 | Oil & Gas Operator | Dec 1996 |
| 29788 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Nov 2025 |
| 29789 | Tri City Oil Co., LLC | Kountze, TX 77625 | Oil Operator | Nov 2025 |
| 29790 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Nov 2025 |
| 29791 | Tri Family Oil Co | | Oil Operator | Dec 2024 |
| 29792 | Tri Investment Company | | Oil Operator | Mar 1980 |
| 29793 | Tri Production Inc | Healdton, OK 73438 | Oil & Gas Operator | Jul 2025 |
| 29794 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Nov 2025 |
| 29795 | Tri Star Operating, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jan 2002 |
| 29796 | Tri United, Inc | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 29797 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Nov 2025 |
| 29798 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 29799 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2025 |
| 29800 | Tri-City Drilling Joint Venture | Belpre, OH 45714 | Oil & Gas Operator | Dec 2024 |