| 6001 | Three Sands Investment Company | Waukomis, OK 73773 | Oil & Gas Operator | Dec 2025 |
| 6002 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 6003 | Three-N-One | | Oil Operator | Oct 2020 |
| 6004 | Threet David Allen | Sand Springs, OK 74063-4035 | Oil & Gas Operator | Nov 2025 |
| 6005 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 6006 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2026 |
| 6007 | Thunder Petroleum LLC | Owasso, OK 74055-1563 | Oil Operator | Aug 2025 |
| 6008 | Tickel Jim & Cindy | Blackwell, OK 74631-6015 | Oil Operator | Jan 2013 |
| 6009 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 6010 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 6011 | Tidemark Exploration Inc | Tulsa, OK 74120 | Oil & Gas Operator | Apr 2019 |
| 6012 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Jan 2026 |
| 6013 | Tidwell Oil LLC | Roff, OK 74865 | Oil Operator | Feb 2022 |
| 6014 | Tiger Eye Resources LLC | Hockley, TX 77447-6911 | Oil Operator | Oct 2012 |
| 6015 | Tiger Mountain Gas & Oil | Oklahoma City, OK 73118 | Gas Operator | Sep 1999 |
| 6016 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 6017 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Jan 2026 |
| 6018 | Tilford Pinson Exploration LLC | Edmond, OK 73003 | Oil & Gas Operator | Dec 2025 |
| 6019 | Tilley Matt Dba Tilley Oil Co | Skiatook, OK 74070 | Oil & Gas Operator | Dec 2025 |
| 6020 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Mar 2026 |
| 6021 | Tilley Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jan 2026 |
| 6022 | Tillman Consulting LLC Dba B & C Operating | Mustang, OK 73064-8195 | Oil Operator | Jan 2022 |
| 6023 | Timber Hill Energy | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2011 |
| 6024 | Timbercreek Oil Company LLC | Healdton, OK 73438 | Oil Operator | Oct 2025 |
| 6025 | Timmy Cornett | Avant, OK 74001 | Oil Operator | Dec 2025 |
| 6026 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Jan 2025 |
| 6027 | Tindol Jr Robert | Ryan, OK 73565 | Oil Operator | Oct 2009 |
| 6028 | Tipperary Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 6029 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Nov 2025 |
| 6030 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Jan 2026 |
| 6031 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2026 |
| 6032 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2025 |
| 6033 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Oct 2025 |
| 6034 | TLC Oil And Gas | Duncan, OK 73533-9477 | Oil & Gas Operator | Oct 2015 |
| 6035 | TLM Resources Inc | Enid, OK 73706-0641 | Gas Operator | Mar 2015 |
| 6036 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Dec 2025 |
| 6037 | TLS Operating Company | Greenwood VIlge, CO 80111 | Oil & Gas Operator | Dec 2013 |
| 6038 | TNT Energy Inc. | Brownwood, TX 76801 | Oil & Gas Operator | May 2013 |
| 6039 | TNT Enterprizes | Coweta, OK 74429 | Oil & Gas Operator | Nov 2005 |
| 6040 | TNT Operating Company Inc | Blanchard, OK 73010 | Oil & Gas Operator | Dec 2025 |
| 6041 | Toco Oil & Gas Co | Grapevine, TX 76051 | Oil & Gas Operator | Feb 1993 |
| 6042 | Todd John C | Oklahoma City, OK 73112-8049 | Oil & Gas Operator | May 2015 |
| 6043 | Token Operating, LLC | Enid, OK 73703-1094 | Oil & Gas Operator | Jan 2026 |
| 6044 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 6045 | Toklan Oil Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 6046 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Mar 2026 |
| 6047 | Toland & Johnston Inc | Edmond, OK 73034 | Oil & Gas Operator | Jan 2026 |
| 6048 | Tolson Gary | Seminole, OK 74868-3267 | Oil & Gas Operator | Nov 2025 |
| 6049 | Toma Explorations LLC | Shawnee, OK 74801-6925 | Oil & Gas Operator | Feb 2025 |
| 6050 | Tomar Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2001 |
| 6051 | Tomlinson Interest | | Oil & Gas Operator | Jun 2013 |
| 6052 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 6053 | Tomlinson W E | Comanche, OK 73529-9561 | Oil Operator | Aug 1996 |
| 6054 | Tomorrows Energy Exploration Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Dec 2025 |
| 6055 | Tonkawa Saltwater Disposal LLC | Woodward, OK 73801 | Oil Operator | Dec 2015 |
| 6056 | Tonner Petroleum LLC | Dallas, TX 75248-3326 | Oil Operator | Feb 2011 |
| 6057 | Tony Oil Company | | Oil & Gas Operator | Dec 2025 |
| 6058 | Tony'S Disposal Service Inc | Yale, OK 74085 | Oil Operator | Aug 1997 |
| 6059 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Dec 2025 |
| 6060 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Dec 2025 |
| 6061 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 6062 | Topsail Secondary Recovery LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2025 |
| 6063 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 6064 | Tornado Energy Corporation | Sugarland, TX 77479-7124 | Oil & Gas Operator | Nov 2014 |
| 6065 | Totah Production | Duncan, OK 73533-9406 | Oil Operator | Mar 2015 |
| 6066 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 6067 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 6068 | Tower Energy Corporation | Sapulpa, OK 74067-0837 | Oil & Gas Operator | Mar 2015 |
| 6069 | Tower Oil & Gas Company Inc | Englewood, CO 80111 | Oil & Gas Operator | May 2001 |
| 6070 | Tower Wanda L Nations | Oklahoma City, OK 73123 | Oil & Gas Operator | Aug 1996 |
| 6071 | Townsend Operating Company | | Oil & Gas Operator | Jan 2008 |
| 6072 | Townsend V E | Ada, OK 74820 | Oil & Gas Operator | May 2013 |
| 6073 | Tpet, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 6074 | Trace Oil & Gas LP | Cement, OK 73017 | Oil & Gas Operator | Dec 2025 |
| 6075 | Trace Operating Co & R Hudson | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 6076 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 6077 | Trachtenberg Daniel S | Houston, TX 77071 | Oil Operator | Dec 2025 |
| 6078 | Trackstar Energies LLC | Colorado Springs, CO 80919-3233 | Oil Operator | Mar 2023 |
| 6079 | Tracy & Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2014 |
| 6080 | Trafalgar House Oil & Gas Inc | Houston, TX 77002-7346 | Oil & Gas Operator | Jan 1992 |
| 6081 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jan 2026 |
| 6082 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Jan 2026 |
| 6083 | Trailhead Exploration, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2026 |
| 6084 | Trans Atlantic Resource Corp | Tulsa, OK 74136-5709 | Oil & Gas Operator | Nov 1998 |
| 6085 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2026 |
| 6086 | Trans Terra Corp Int'L | Amarillo, TX 79159-0370 | Oil & Gas Operator | Jul 1993 |
| 6087 | Trans-Western Exploration Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 1993 |
| 6088 | Transamerican Energy LTD | Dallas, TX 75231-1075 | Oil & Gas Operator | Apr 2014 |
| 6089 | Transcoastal Operating LLC | Dallas, TX 75252-5646 | Oil & Gas Operator | Mar 2015 |
| 6090 | Transcontinental Company | Haltom City, TX 76148-4122 | Oil & Gas Operator | Dec 2025 |
| 6091 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 6092 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Mar 2026 |
| 6093 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 6094 | Transpetco Transport Company | Shreveport, LA 71101-5370 | Oil Operator | Jun 2008 |
| 6095 | Travco Well Servicing LLC | Okmulgee, OK 74447 | Oil Operator | Dec 2025 |
| 6096 | Travis Peak Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 6097 | Traynor Oil & Gas Inc | Claremont, CA 91711-2837 | Oil & Gas Operator | Jan 2024 |
| 6098 | Treat Howard | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2014 |
| 6099 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Mar 2026 |
| 6100 | Trenchco Inc | Shawnee, OK 74802-3577 | Oil & Gas Operator | Apr 2015 |