| 11001 | TD Natural Resources LLC | Cuero, TX 77954 | Oil & Gas Operator | Apr 2025 |
| 11002 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 11003 | TDC Engineering, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 11004 | TDT Production, Inc. | Capitola, CA 95010 | Oil & Gas Operator | Aug 2003 |
| 11005 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 11006 | Te-Ray Resources, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Mar 2015 |
| 11007 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
| 11008 | Teaco | Snyder, TX 79550 | Oil & Gas Operator | Jan 1998 |
| 11009 | Teague Operating Co. | Mabank, TX 75147 | Oil & Gas Operator | Jul 1995 |
| 11010 | Teague, J. V. & Robinson, E. W. | Olney, TX 76374 | Oil & Gas Operator | May 1996 |
| 11011 | Teakwood Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2019 |
| 11012 | Teal Energy USA, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 11013 | Teal Exploration, LLC | Abilene, TX 79602 | Oil Operator | Apr 2025 |
| 11014 | Teal Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2021 |
| 11015 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Apr 2025 |
| 11016 | Teamco Operating LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2002 |
| 11017 | Tech Resources, Inc. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2001 |
| 11018 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Jan 2025 |
| 11019 | Technology & Engr. Careers Inc. | Houston, TX 77063 | Oil Operator | Dec 2017 |
| 11020 | Teco Oil & Gas, Inc. | Tampa, FL 33601 | Oil & Gas Operator | Nov 1997 |
| 11021 | Teco Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2001 |
| 11022 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 11023 | Tecolote Petroleum Corp.,Inc. | Friendswood, TX 77546 | Oil & Gas Operator | Mar 2011 |
| 11024 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 11025 | Tega Operating Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2012 |
| 11026 | Tejas Gas Pipeline Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1998 |
| 11027 | Tejas Gas Pipeline, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2002 |
| 11028 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2025 |
| 11029 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 11030 | Tejas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 11031 | Tejas Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 11032 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11033 | Tejas Petroleum Resources, LLC | Aubrey, TX 76227 | Oil & Gas Operator | Apr 2025 |
| 11034 | Tejas Trucking, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Apr 2025 |
| 11035 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 11036 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 11037 | Teke Production LLC | Houston, TX 77269 | Oil Operator | Apr 2025 |
| 11038 | Tekna Synergy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11039 | Teleo Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2009 |
| 11040 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2025 |
| 11041 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Apr 2025 |
| 11042 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 11043 | Tember Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Apr 2025 |
| 11044 | Tempest Energy Resources, LP | Houston, TX 77251 | Oil & Gas Operator | Jun 2013 |
| 11045 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2025 |
| 11046 | Templeton Oil, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 11047 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11048 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 11049 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 11050 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 11051 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |
| 11052 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Apr 2024 |
| 11053 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Apr 2025 |
| 11054 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2024 |
| 11055 | Tennessee Gas Pipeline Company, LLC | Houston, TX 77252 | Oil Operator | Dec 2024 |
| 11056 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 11057 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 11058 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 11059 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 11060 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 11061 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 11062 | Terra Locus Services | Seguin, TX 78155 | Oil & Gas Operator | Jun 2000 |
| 11063 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 11064 | Terrafina Energy, LLC | San Antonio, TX 78280 | Oil & Gas Operator | Apr 2025 |
| 11065 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Feb 2025 |
| 11066 | Terreland Corporation | Sunray, TX 79086 | Oil & Gas Operator | Oct 2004 |
| 11067 | Terrell Oil & Gas Production Co. | Hamlin, TX 79520 | Oil & Gas Operator | Apr 2025 |
| 11068 | Terrick Resources | Midland, TX 79708 | Oil & Gas Operator | Jul 2005 |
| 11069 | Terry Enterprises, Inc. | West Columbia, TX 77486 | Oil & Gas Operator | Apr 2025 |
| 11070 | Terry Petroleum Company | Houston, TX 77270 | Oil & Gas Operator | Dec 1997 |
| 11071 | Terry'S Roustabout Service, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2002 |
| 11072 | Terry, Lewis D. | Olney, TX 76374 | Oil & Gas Operator | Sep 1995 |
| 11073 | Terry, R. K. | West Columbia, TX 77486 | Oil & Gas Operator | Apr 2025 |
| 11074 | Tesoro E&P Company, L.P. | San Antonio, TX 78216 | Oil & Gas Operator | Jan 2000 |
| 11075 | Tesoro Expl. & Prod. Company | San Antonio, TX 78216 | Gas Operator | Sep 2010 |
| 11076 | Tess Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 11077 | Tessara Petroleum Resources, LLC | Houston, TX 77086 | Oil & Gas Operator | Apr 2020 |
| 11078 | Tesuque Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | Apr 2025 |
| 11079 | Teton Petroleum Corporation | Kerrville, TX 78028 | Oil & Gas Operator | Apr 2025 |
| 11080 | Tetragon Investments, LLC | Abilene, TX 79604 | Oil Operator | Jul 2014 |
| 11081 | Tettleton, Jon Otis | Nocona, TX 76255 | Oil & Gas Operator | Aug 2003 |
| 11082 | Tettleton, Steven B. | Nocona, TX 76255 | Oil Operator | Apr 2025 |
| 11083 | Tex-Am Petroleum Corp. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2025 |
| 11084 | Tex-Am-Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 11085 | Tex-Ann Oil & Gas Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 11086 | Tex-Atic Resources, Inc. | S. Lake Tahoe, CA 96150 | Oil & Gas Operator | Apr 2025 |
| 11087 | Tex-Lee Operating Company | Giddings, TX 78942 | Oil & Gas Operator | Apr 2025 |
| 11088 | Tex-Oak, Inc. | Oklahoma City, OK 73155 | Oil & Gas Operator | Dec 1995 |
| 11089 | Tex-Ok Energy, LTD Partnership | Cody, WY 82414 | Oil & Gas Operator | Apr 2025 |
| 11090 | Tex-R Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2021 |
| 11091 | Tex-Well Oil & Gas Corp. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 11092 | Texacal, Inc. | Newport Beach, CA 92660 | Oil & Gas Operator | Apr 2025 |
| 11093 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Apr 2025 |
| 11094 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Dec 2024 |
| 11095 | Texaco Exploration & Prod | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
| 11096 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 11097 | Texakoma E & P, LLC | Plano, TX 75024 | Oil & Gas Operator | Apr 2025 |
| 11098 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 11099 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Jan 2025 |
| 11100 | Texakota, Inc. | Houston, TX 77098 | Oil & Gas Operator | Mar 2021 |