| 29701 | Tuthill S Keith & Bill Barbee | Amarillo, TX 79101-1427 | Oil & Gas Operator | Dec 2004 |
| 29702 | Tuway Oil, Inc | | Oil & Gas Operator | Jun 2006 |
| 29703 | TW Phillips Gas Supply Corp | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2011 |
| 29704 | Twain Energy LLC | Ridgeland, MS 39157 | Oil & Gas Operator | Jan 2026 |
| 29705 | TWC Oil Company, Inc. | | Oil Operator | Jan 2025 |
| 29706 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 29707 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2026 |
| 29708 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Apr 2026 |
| 29709 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Apr 2026 |
| 29710 | Twin Arrow Inc | Rangely, CO 81648 | Oil & Gas Operator | Sep 2009 |
| 29711 | Twin City Gas | | Gas Operator | Nov 1997 |
| 29712 | Twin Eagle Petro | | Oil Operator | Aug 1990 |
| 29713 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 29714 | Twin M, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Dec 2025 |
| 29715 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Apr 2026 |
| 29716 | Twin Oil Partnership LLC | | Oil Operator | Dec 2024 |
| 29717 | Twin Star Petrol | | Oil & Gas Operator | Jan 1989 |
| 29718 | Twiner Oil & Gas Corporation | | Oil & Gas Operator | Oct 1988 |
| 29719 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2025 |
| 29720 | Twinoco | Caney, KS 67333 | Oil Operator | Nov 1996 |
| 29721 | Twins Oil Co. | Monahans, TX 79756 | Oil & Gas Operator | Apr 2026 |
| 29722 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2026 |
| 29723 | Twisted Resources Inc | Blanchard, OK 73010-8463 | Oil & Gas Operator | Dec 2025 |
| 29724 | TWM Production Co., A General Partnership | Chanute, KS 66720 | Oil Operator | Nov 2025 |
| 29725 | Two Bay Petroleum | | Oil & Gas Operator | Dec 2010 |
| 29726 | Two Bayous, Inc. | | Oil & Gas Operator | Dec 2024 |
| 29727 | Two Bit Operating Company LLC | Fort Worth, TX 76110 | Oil & Gas Operator | Apr 2026 |
| 29728 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 29729 | Two Forks Operating LLC | Ponca City, OK 74601-7815 | Oil & Gas Operator | Dec 2025 |
| 29730 | Two Gems Company | McAlester, OK 74502-1996 | Oil & Gas Operator | Dec 2025 |
| 29731 | Two Oaks Operating Company, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2008 |
| 29732 | Two P Partners, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 29733 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 29734 | Twojo, Inc. | Longview, TX 75601 | Oil & Gas Operator | Nov 1996 |
| 29735 | TWS Oil And Gas LLC | Arlington, TX 76006 | Oil Operator | Apr 2026 |
| 29736 | TX Heat Of The Permian Basin Inc | Odessa, TX 79768 | Oil & Gas Operator | Dec 2021 |
| 29737 | TX Lone Star Operating Co, LLC | Sulphur SPGS, TX 75483 | Oil & Gas Operator | Apr 2026 |
| 29738 | TX Petroleum Company | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 1996 |
| 29739 | Txco Resources Inc. | San Antonio, TX 78280 | Oil & Gas Operator | Apr 2026 |
| 29740 | Txla Energy, Inc. | Houston, TX 77018 | Oil & Gas Operator | Apr 2026 |
| 29741 | Txo Prod Corp.-Arkla Expl. Co. | | Oil & Gas Operator | Dec 1990 |
| 29742 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 29743 | Txo Production Corp/Amh O&G Co | | Oil & Gas Operator | Dec 1990 |
| 29744 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 29745 | Txok Texas Energy Resources,L.P. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2008 |
| 29746 | Txon Partners, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2017 |
| 29747 | TXP Operating Co. | | Oil & Gas Operator | Jul 1992 |
| 29748 | TXP, Incorporated | San Angelo, TX 76906 | Oil & Gas Operator | Apr 2026 |
| 29749 | Txu Fuel Company | Dallas, TX 75201 | Oil & Gas Operator | May 2004 |
| 29750 | Txu Gas Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2004 |
| 29751 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |
| 29752 | TXX Operating LLC | Shreveport, LA 71133 | Oil & Gas Operator | Apr 2026 |
| 29753 | Ty-Tex Exploration, Inc. | Tyler, TX 75711 | Oil Operator | Dec 2000 |
| 29754 | Tyco Incorporate | | Oil & Gas Operator | Oct 1995 |
| 29755 | Tyco Oil Co. | | Oil Operator | Oct 2025 |
| 29756 | Tyco Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Apr 2026 |
| 29757 | Tygr Operating Company, LLC | | Oil & Gas Operator | Nov 2024 |
| 29758 | Tyl Oil | Canon City, CO 81212 | Gas Operator | May 1994 |
| 29759 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 29760 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |
| 29761 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 29762 | Tyler Production, LLC | | Oil & Gas Operator | Jul 2013 |
| 29763 | Tyler Rockies Exploration LTD | Tyler, TX 75710-0119 | Oil & Gas Operator | Dec 2025 |
| 29764 | Tyler, Scott A | | Oil & Gas Operator | Dec 2025 |
| 29765 | Tyler, Steven Lee | | Oil Operator | May 2014 |
| 29766 | Tyluka Operations, LLC | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 29767 | Tyner Texas Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Apr 2026 |
| 29768 | Tyrex Oil Company | Casper, WY 82602 | Oil & Gas Operator | May 1997 |
| 29769 | Tyro Oil Develop | | Oil Operator | Jul 1991 |
| 29770 | Tyrok | | Oil & Gas Operator | Nov 2010 |
| 29771 | Tysco Oil And Gas Corp. | | Oil & Gas Operator | Dec 2024 |
| 29772 | Tyson Gary | Hobart, OK 73651-6413 | Oil & Gas Operator | Mar 2018 |
| 29773 | Tyson Oil Co. | | Oil Operator | Jan 2025 |
| 29774 | Tyson Olan | Hobart, OK 73651-6413 | Oil & Gas Operator | Apr 2015 |
| 29775 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |
| 29776 | U Bee Tea Production LLC | Culbertson, MT 59218 | Oil & Gas Operator | Oct 2025 |
| 29777 | U R C C | | Oil & Gas Operator | Jun 1991 |
| 29778 | U S Drilling Company Inc | Holdenville, OK 74848-0913 | Oil & Gas Operator | Mar 2017 |
| 29779 | U S Energy Corp. Of Amer. Inc. | Cisco, TX 76437 | Oil & Gas Operator | Apr 2026 |
| 29780 | U S Exploraton Liq Trust | | Oil & Gas Operator | Oct 1994 |
| 29781 | U S Liquids Of La., L.P. | | Oil Operator | Apr 2014 |
| 29782 | U V Industries | | Oil & Gas Operator | Jan 1993 |
| 29783 | U-N-I Exploratio | | Oil & Gas Operator | Dec 1990 |
| 29784 | U-N-I Exploration & Development, Inc. | Yates Center, KS 66783 | Oil & Gas Operator | Jan 2003 |
| 29785 | U. D. Man, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Apr 2026 |
| 29786 | U. O. C., Inc. | | Oil Operator | Jun 2019 |
| 29787 | U. S. Energy Development Corporation | Fort Worth, TX 76164 | Oil & Gas Operator | Apr 2026 |
| 29788 | U. S. Operating, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Jul 2025 |
| 29789 | U.S. Capital Corp Of Am, Inc. | | Oil & Gas Operator | Aug 1998 |
| 29790 | U.S. Enercorp, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2004 |
| 29791 | U.S. Enercorp, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2019 |
| 29792 | U.S. Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 29793 | U.S. Oil Reclaimers, LLC | | Oil Operator | Jun 2023 |
| 29794 | U.S. Sovereign Oil And Gas, Inc. | Dallas, TX 75355 | Oil & Gas Operator | Apr 2026 |
| 29795 | U.S. Steel Mining Co., Inc. | | Gas Operator | Jan 2000 |
| 29796 | U.S. Steel Mining Co., LLC | | Gas Operator | Oct 2002 |
| 29797 | U.S.A. Plugging Company | Pearsall, TX 78061 | Oil & Gas Operator | Apr 2026 |
| 29798 | U1 Ranch Oil | Houston, TX 77269 | Oil & Gas Operator | Apr 2026 |
| 29799 | Uae Investco 1 (Estill), LLC | Ravenna, KY 40472 | Oil Operator | Dec 2022 |
| 29800 | Uae Investco 2 (Lee), LLC | Ravenna, KY 40472 | Oil Operator | Dec 2021 |