| 11001 | Tracker Oil & Gas, Inc. | Bastrop, TX 78602 | Oil & Gas Operator | Apr 2024 |
| 11002 | Tracker Resource Dev III, LLC | Englewood, CO 80112 | Oil & Gas Operator | Jul 2021 |
| 11003 | Trackstar Energies LLC | Colorado Springs, CO 80919 | Oil Operator | Mar 2023 |
| 11004 | Tracy Co. | Rockdale, TX 76567 | Oil & Gas Operator | Mar 2022 |
| 11005 | Tracy Operating Co., LLC | Rockdale, TX 76567 | Oil & Gas Operator | Apr 2024 |
| 11006 | Tracy Production | Lindale, TX 75771 | Oil & Gas Operator | Apr 2024 |
| 11007 | Tradestar Energy, Inc. | Hot Springs, AR 71913 | Oil Operator | Feb 2021 |
| 11008 | Tradition Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 11009 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 11010 | Trail Mountain, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2016 |
| 11011 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jan 2024 |
| 11012 | Trail Ridge Energy PRTNS II LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jun 2017 |
| 11013 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Jan 2024 |
| 11014 | Trailblazer Energy Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2024 |
| 11015 | Trans Ocean Oil, Inc. | Houston, TX 77252 | Oil & Gas Operator | Oct 1980 |
| 11016 | Trans Oil Marketing LLC | Abilene, TX 79602 | Oil Operator | Aug 2023 |
| 11017 | Trans Terra Corp., International | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2009 |
| 11018 | Trans Texas Minerals Company | Austin, TX 78714 | Oil & Gas Operator | Aug 1999 |
| 11019 | Trans-Pecos Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 11020 | Trans-Texas Energy Group LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2015 |
| 11021 | Transamerica Energy Corp. | Atlanta, GA 30356 | Oil & Gas Operator | Apr 2024 |
| 11022 | Transamerican Natural Gas Corp. | Houston, TX 77032 | Oil & Gas Operator | Aug 2000 |
| 11023 | Transatlantic Petr (USA) Corp. | Dallas, TX 75206 | Oil & Gas Operator | Apr 2024 |
| 11024 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 11025 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 11026 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 11027 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Apr 2024 |
| 11028 | Transpacific Energy, LLC | Katy, TX 77450 | Oil & Gas Operator | Apr 2024 |
| 11029 | Transpetco I | Shreveport, LA 71101 | Oil & Gas Operator | May 2009 |
| 11030 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 11031 | Trap Rock Oil Company | Cambridge, MA 02138 | Oil & Gas Operator | Nov 2005 |
| 11032 | Trap Rock Oil, LTD. | Houston, TX 77027 | Oil & Gas Operator | Apr 2024 |
| 11033 | Traton Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Mar 2019 |
| 11034 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2024 |
| 11035 | Travers Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 11036 | Travis | Houston, TX 77057 | Oil Operator | Apr 2024 |
| 11037 | Travis Operating, LLC | Kingwood, TX 77345 | Oil & Gas Operator | Apr 2024 |
| 11038 | Travis, J. J., Trustee | Rockport, TX 78382 | Oil & Gas Operator | Dec 1996 |
| 11039 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Apr 2024 |
| 11040 | Treadstone Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2016 |
| 11041 | Treadstone Energy PRTNR Op, LLC | Katy, TX 77494 | Oil & Gas Operator | Apr 2024 |
| 11042 | Treco Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 11043 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 11044 | Trejim Operators, LLC | Pampa, TX 79065 | Oil & Gas Operator | Apr 2024 |
| 11045 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Dec 2023 |
| 11046 | Trek Exploration, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Apr 2024 |
| 11047 | Trek Oil & Gas, Inc | Houston, TX 77002 | Oil Operator | Mar 1998 |
| 11048 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Apr 2024 |
| 11049 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 11050 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11051 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 11052 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 11053 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Apr 2024 |
| 11054 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 11055 | Tres Roughneckas WTX LLC | Houston, TX 77009 | Oil Operator | Apr 2024 |
| 11056 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2024 |
| 11057 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 11058 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 11059 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2023 |
| 11060 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Apr 2024 |
| 11061 | Tri City Oil Co., LLC | Baytown, TX 77520 | Oil Operator | Apr 2024 |
| 11062 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Apr 2024 |
| 11063 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 11064 | Tri Star Operating, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jan 2002 |
| 11065 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Apr 2024 |
| 11066 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 11067 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 11068 | Tri-County Operating Company | Seguin, TX 78156 | Gas Operator | Feb 1997 |
| 11069 | Tri-Ex Petroleum, L.P. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2013 |
| 11070 | Tri-Force Operating, L.L.C. | Royse City, TX 75189 | Oil & Gas Operator | Apr 2024 |
| 11071 | Tri-K Production Company, Inc. | Olney, TX 76374 | Oil & Gas Operator | Apr 1996 |
| 11072 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 11073 | Tri-State Resources, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2012 |
| 11074 | Tri-State Sales & Production | Rodessa, LA 71069 | Oil & Gas Operator | Dec 2008 |
| 11075 | Tri-Tex Exploration LTD | Abilene, TX 79608 | Oil Operator | Apr 2019 |
| 11076 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 11077 | Tri-W Oil | Luling, TX 78648 | Oil Operator | Apr 2024 |
| 11078 | Tri-W Oil, Inc. | Luling, TX 78648 | Oil Operator | Apr 2007 |
| 11079 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 11080 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 11081 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 11082 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 11083 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Apr 2024 |
| 11084 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 11085 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 11086 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2024 |
| 11087 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 11088 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2024 |
| 11089 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Apr 2024 |
| 11090 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 11091 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 11092 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2024 |
| 11093 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2024 |
| 11094 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 11095 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Apr 2024 |
| 11096 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2024 |
| 11097 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Apr 2024 |
| 11098 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 11099 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Apr 2024 |
| 11100 | Trinity Gas Storage, LLC | Flower Mound, TX 75027 | Oil & Gas Operator | Apr 2024 |