| 28801 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 28802 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 28803 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 28804 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 28805 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 28806 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 28807 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |
| 28808 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Jun 2025 |
| 28809 | Tenison Oil Comp | | Oil Operator | Jan 1993 |
| 28810 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Jul 2025 |
| 28811 | Tenk, Lawrence O. | Ottawa, KS 66067 | Oil & Gas Operator | Oct 1998 |
| 28812 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 28813 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 28814 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 28815 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Aug 2025 |
| 28816 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 28817 | Tenneco West, Inc. | | Oil & Gas Operator | Dec 1983 |
| 28818 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 28819 | Tennessee Gas Pipeline Company, LLC | Houston, TX 77002 | Oil Operator | Dec 2024 |
| 28820 | Tennessee Properties, Inc | | Oil Operator | Dec 2014 |
| 28821 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Jul 2025 |
| 28822 | Tenpas, Bruce | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 28823 | Tensas Delta Expl Co., LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 28824 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 28825 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 28826 | Tensas Exploraton & Production Co LLC | | Oil & Gas Operator | Nov 2009 |
| 28827 | Teocali Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 28828 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Aug 2025 |
| 28829 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 28830 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 28831 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 28832 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 28833 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 28834 | Ter Ex Inc | Butler, PA 16002-8638 | Gas Operator | Dec 1994 |
| 28835 | Terex Energy Corporation | Casper, WY 82602 | Oil & Gas Operator | Aug 2019 |
| 28836 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28837 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 28838 | Term Energy Corp. | Harrisville, WV 26362-0000 | Oil & Gas Operator | Dec 2021 |
| 28839 | Termo Company Of Texas | | Oil & Gas Operator | Dec 1986 |
| 28840 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 28841 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 28842 | Terra Energy LTD And Miller Energy Inc And Mille | | Gas Operator | Dec 1998 |
| 28843 | Terra Exploration & Production Co. Inc. | | Oil & Gas Operator | Dec 2009 |
| 28844 | Terra Locus Services | Seguin, TX 78155 | Oil & Gas Operator | Jun 2000 |
| 28845 | Terra Max Energy | | Oil Operator | Mar 1986 |
| 28846 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 28847 | Terra Resc Incor | | Oil Operator | Mar 1986 |
| 28848 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
| 28849 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 28850 | Terrafina Energy, LLC | San Antonio, TX 78280 | Oil & Gas Operator | Nov 2025 |
| 28851 | Terral D Hinds | | Oil Operator | Mar 2012 |
| 28852 | Terrapet Corporation | | Oil & Gas Operator | Jun 2011 |
| 28853 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Aug 2025 |
| 28854 | Terraquest Corporation | Edmond, OK 73034 | Oil & Gas Operator | Jul 1997 |
| 28855 | Terrascan Drilling Corp | Dublin, OH 43017 | Oil Operator | Dec 2005 |
| 28856 | Terrel Production Co | | Oil & Gas Operator | Sep 2025 |
| 28857 | Terreland Corporation | Sunray, TX 79086 | Oil & Gas Operator | Oct 2004 |
| 28858 | Terrell Oil & Gas Production Co. | Hamlin, TX 79520 | Oil & Gas Operator | Nov 2025 |
| 28859 | Terrgin Oil & Gas LLC | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2021 |
| 28860 | Terrick Resources | Midland, TX 79708 | Oil & Gas Operator | Jul 2005 |
| 28861 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
| 28862 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Sep 2025 |
| 28863 | Terrol Energy In | | Oil Operator | Feb 1993 |
| 28864 | Terrol Energy Incorporated | Hygiene, CO 80533 | Oil & Gas Operator | Dec 2006 |
| 28865 | Terronne Petroleum Corporation | | Oil & Gas Operator | Nov 2024 |
| 28866 | Terry D Coan | Youngsville, PA 16371-3608 | Oil & Gas Operator | Dec 2021 |
| 28867 | Terry Development, Inc. | | Oil & Gas Operator | Aug 1992 |
| 28868 | Terry Enterprises, Inc. | West Columbia, TX 77486 | Oil & Gas Operator | Nov 2025 |
| 28869 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 28870 | Terry John Trust | Aurora, CO 80012-5112 | Oil & Gas Operator | May 2016 |
| 28871 | Terry Oil Company LLC | | Oil Operator | Dec 2024 |
| 28872 | Terry Pate | Hobbs, NM 88240 | Oil & Gas Operator | Jun 2006 |
| 28873 | Terry Petroleum Company | Houston, TX 77270 | Oil & Gas Operator | Dec 1997 |
| 28874 | Terry Production Co | Stroud, OK 74079-0475 | Oil & Gas Operator | Aug 2008 |
| 28875 | Terry Sims & Associates, Inc. | | Oil Operator | Sep 2009 |
| 28876 | Terry'S Roustabout Service, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2002 |
| 28877 | Terry, Lewis D. | Olney, TX 76374 | Oil & Gas Operator | Sep 1995 |
| 28878 | Terry, R. K. | West Columbia, TX 77486 | Oil & Gas Operator | Nov 2025 |
| 28879 | Tervita, LLC | | Oil Operator | May 2021 |
| 28880 | Terzan Energy II LLC | Chandler, OK 74834 | Oil & Gas Operator | Jul 2025 |
| 28881 | Tesla Resources, Inc. | | Oil & Gas Operator | Aug 1996 |
| 28882 | Tesoro E&P Company, L.P. | San Antonio, TX 78216 | Oil & Gas Operator | Jan 2000 |
| 28883 | Tesoro Expl. & Prod. Company | San Antonio, TX 78216 | Gas Operator | Sep 2010 |
| 28884 | Tesoro Petroleum | | Oil Operator | Mar 1982 |
| 28885 | Tesoro Petroleum Corporation | | Oil & Gas Operator | May 1982 |
| 28886 | Tess Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 28887 | Tessara Petroleum Resources, LLC | Houston, TX 77086 | Oil & Gas Operator | Apr 2020 |
| 28888 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jul 2025 |
| 28889 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 28890 | Tesuque Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | Nov 2025 |
| 28891 | Tet Energy | | Oil Operator | Jun 2025 |
| 28892 | Teton Energy Co Inc | Denver, CO 80239 | Oil Operator | Dec 1983 |
| 28893 | Teton Petroleum Corporation | Kerrville, TX 78028 | Oil & Gas Operator | Nov 2025 |
| 28894 | Tetra Oil Company | | Oil & Gas Operator | Aug 2025 |
| 28895 | Tetragon Investments, LLC | Abilene, TX 79604 | Oil Operator | Jul 2014 |
| 28896 | Tettleton, Jon Otis | Nocona, TX 76255 | Oil & Gas Operator | Aug 2003 |
| 28897 | Tettleton, Steven B. | Nocona, TX 76255 | Oil Operator | Nov 2025 |
| 28898 | Tevebaugh MGMT Co | Baden, PA 15005-0123 | Oil & Gas Operator | Dec 2002 |
| 28899 | Tex-Am Petroleum Corp. | Eastland, TX 76448 | Oil & Gas Operator | Nov 2025 |
| 28900 | Tex-Am-Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |