| 11001 | Texas Tea Oil Company | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2011 |
| 11002 | Texas Trade International Inc. | Andrews, TX 79714 | Oil Operator | Jun 2026 |
| 11003 | Texas United Geoproduction, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Jun 2026 |
| 11004 | Texas Utilities Fuel Co. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2018 |
| 11005 | Texas Utilities Mining Co. | Dallas, TX 75201 | Oil & Gas Operator | May 1995 |
| 11006 | Texas Valley Oil & Gas, LLC | Hidalgo, TX 78557 | Oil Operator | Jun 2026 |
| 11007 | Texas Vanguard Oil Company | Austin, TX 78720 | Oil & Gas Operator | Jan 2014 |
| 11008 | Texas Western Energy Corporation | Portland, TX 78374 | Oil & Gas Operator | Nov 2002 |
| 11009 | Texas Western Oil Company | Sioux Falls, SD 57109 | Oil & Gas Operator | Sep 2013 |
| 11010 | Texas, Les & Co. | Brenham, TX 77833 | Oil & Gas Operator | Jun 2026 |
| 11011 | Texas, Les C., LTD. | Houston, TX 77095 | Oil & Gas Operator | Dec 2006 |
| 11012 | Texas-Australia Power Inc. | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2011 |
| 11013 | Texas-Ohio Producing Company | Spring, TX 77383 | Oil & Gas Operator | Jul 1995 |
| 11014 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 11015 | Texcal Energy (GP) LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2016 |
| 11016 | Texcal Oil Co | Cuero, TX 77954 | Oil & Gas Operator | Feb 2006 |
| 11017 | Texcal Oil Inc. | Vidor, TX 77662 | Oil & Gas Operator | Jun 1994 |
| 11018 | Texcal Resources, Inc. | Plano, TX 75094 | Oil & Gas Operator | Apr 1994 |
| 11019 | Texcel Exploration, Inc. | Colorado SPGS, CO 80960 | Oil & Gas Operator | Jun 2026 |
| 11020 | Texcrude Services LLC | Iowa Park, TX 76367 | Oil Operator | Jun 2026 |
| 11021 | Texdon Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2005 |
| 11022 | Texeast Operating Co., Inc. | Farmers BRNCH, TX 75234 | Oil Operator | Jun 2026 |
| 11023 | Texegy Operating Company LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Dec 2024 |
| 11024 | Texian Energy Corporation | Amarillo, TX 79120 | Oil & Gas Operator | Apr 1997 |
| 11025 | Texian Operating Company, LLC | Irving, TX 75063 | Oil & Gas Operator | Jun 2026 |
| 11026 | Texical, Inc. | Katy, TX 77491 | Oil & Gas Operator | Jun 2026 |
| 11027 | Texinia Corp | Dallas, TX 75201 | Oil & Gas Operator | Jun 2015 |
| 11028 | Texla Operating Co | Jonesville, TX 75659 | Oil & Gas Operator | Jun 2026 |
| 11029 | Texlan Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Nov 1994 |
| 11030 | Texlan Oil Company, L.C. | Tyler, TX 75711 | Oil & Gas Operator | Aug 2003 |
| 11031 | Texland Petroleum Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2003 |
| 11032 | Texland Petroleum, L.P. | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2026 |
| 11033 | Texland Petroleum-Hobbs, L.L.C. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 11034 | Texland-Rector & Schumacher | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2000 |
| 11035 | Texland/JMC Joint Venture | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2002 |
| 11036 | Texlark Exploration Company, Inc | Plano, TX 75074 | Oil & Gas Operator | Sep 2001 |
| 11037 | Texokan Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2026 |
| 11038 | Texoma Oil Tools, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 11039 | Texon Oil Company, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 11040 | Texona Petroleum Corporation | Houston, TX 77084 | Oil & Gas Operator | Aug 2003 |
| 11041 | Texowa, LLC | Roanoke, TX 76262 | Oil Operator | Jun 2026 |
| 11042 | Texoz E&P I, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jun 2026 |
| 11043 | Texploration | Rosharon, TX 77583 | Oil Operator | Jun 2026 |
| 11044 | Texron Operating, LLC | Bulverde, TX 78163 | Oil & Gas Operator | Jun 2026 |
| 11045 | Texstar Drilling, Inc. | Houston, TX 77084 | Oil & Gas Operator | Jun 2026 |
| 11046 | Texstar North America, Inc. | Waynesboro, MS 39367 | Oil & Gas Operator | Aug 1994 |
| 11047 | Texstar Oil & Gas, LLC | Luling, TX 78648 | Oil & Gas Operator | Jun 2026 |
| 11048 | Texstar Operating Inc. | Slaton, TX 79364 | Oil & Gas Operator | Jun 2026 |
| 11049 | Texstar Petroleum, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2000 |
| 11050 | Texsun Operating Company Limited | Abilene, TX 79601 | Oil & Gas Operator | Mar 1996 |
| 11051 | Textroleum Production, Inc. | Lubbock, TX 79452 | Oil & Gas Operator | Mar 2008 |
| 11052 | Textron Southwest Inc. | Henderson, TX 75654 | Oil & Gas Operator | Jun 2026 |
| 11053 | Textron Southwest L.L.C. | Addison, TX 75001 | Oil & Gas Operator | Oct 2004 |
| 11054 | Texu Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Jan 2007 |
| 11055 | Texxol Operating Company, Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Jun 2026 |
| 11056 | Texxon Resources, Inc. | Winter Park, FL 32792 | Oil & Gas Operator | Jun 2026 |
| 11057 | Texzona Oil & Gas, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 1997 |
| 11058 | TFX, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2019 |
| 11059 | TGNR East Texas II LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 11060 | TGNR East Texas LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 11061 | TGNR Gulf Coast LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 11062 | TGNR Panola LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 11063 | TGNR TVL LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 11064 | Tgo Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Dec 2008 |
| 11065 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 11066 | Thagard Trust | Rancho Santo, CA 92688 | Gas Operator | Jun 2026 |
| 11067 | Thalmann Oil Field Service, Inc. | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Mar 2008 |
| 11068 | Thalmann Oilfield | Carrizo SPGS, TX 78834 | Oil Operator | Jun 2026 |
| 11069 | Thalmann, David Vac Service Inc | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Jun 2026 |
| 11070 | Tharp Operating Company | Houston, TX 77070 | Oil & Gas Operator | Nov 2014 |
| 11071 | The Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 11072 | The Cornell Corporation | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 1993 |
| 11073 | The Dehart Company LLC | Ardmore, OK 73402-0907 | Oil Operator | Mar 2026 |
| 11074 | The Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2007 |
| 11075 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2026 |
| 11076 | The Termo Company | Long Beach, CA 90801 | Oil & Gas Operator | Apr 2026 |
| 11077 | Theisen, VIncent A. | Wilmington, DE 19807 | Oil & Gas Operator | Sep 2003 |
| 11078 | Thigpin Operating, LLC | Odessa, TX 79762 | Oil Operator | Jun 2026 |
| 11079 | Thomas Exploration & Devel., Inc | Jourdanton, TX 78026 | Oil & Gas Operator | Jun 2026 |
| 11080 | Thomas Oil & Gas Company | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 11081 | Thomas Oil And Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2019 |
| 11082 | Thomas Operating LTD. Co. | Dallas, TX 75220 | Oil & Gas Operator | Jun 2026 |
| 11083 | Thomas Production | Electra, TX 76360 | Oil & Gas Operator | Mar 2015 |
| 11084 | Thomas Resources Corporation | Monahans, TX 79756 | Oil Operator | Mar 2008 |
| 11085 | Thomas, B. K. | Plano, TX 75093 | Oil & Gas Operator | Jan 2008 |
| 11086 | Thomas, M.A. Oil Associates | Nocona, TX 76255 | Oil & Gas Operator | Jun 2026 |
| 11087 | Thomas, Mike | Nixon, TX 78140 | Oil Operator | Jun 2026 |
| 11088 | Thomas, R. W. Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 11089 | Thomas, T. N. Oil Company | Aiken, SC 29801 | Oil & Gas Operator | Jun 2026 |
| 11090 | Thomfield Energy LLC | Kilgore, TX 75663 | Oil Operator | Jun 2026 |
| 11091 | Thompson Oil Co. | Corsicana, TX 75151 | Oil & Gas Operator | Feb 2026 |
| 11092 | Thompson Operating Co. | Abernathy, TX 79311 | Oil & Gas Operator | Aug 1994 |
| 11093 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 11094 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 11095 | Thompson, Mark P. | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 11096 | Thompson, Richard W. Inc. | Plano, TX 75024 | Oil & Gas Operator | Jun 2026 |
| 11097 | Thor Operating Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 1995 |
| 11098 | Thor-Max Operating, Inc. | Plano, TX 75025 | Oil & Gas Operator | Jun 2026 |
| 11099 | Thornberry Oilfield Service, Inc | Conroe, TX 77302 | Oil & Gas Operator | Aug 2003 |
| 11100 | Thornton Oil Co. | Abilene, TX 79603 | Oil & Gas Operator | Aug 2003 |