| 6001 | Texcel Exploration, Inc. | Colorado SPGS, CO 80960 | Oil & Gas Operator | Dec 2025 |
| 6002 | Texinia Corp | Dallas, TX 75201 | Oil & Gas Operator | Jun 2015 |
| 6003 | Texinia Limited Partnership | Dallas, TX 75201 | Gas Operator | Jan 2017 |
| 6004 | Texinia Oil & Gas Inc | Dallas, TX 75214 | Oil & Gas Operator | Nov 2025 |
| 6005 | Texland Petroleum Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2003 |
| 6006 | Texocan Minerals Inc | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2000 |
| 6007 | Texoma Oil & Gas Corporation | Longview, TX 75604-3137 | Oil Operator | Apr 2014 |
| 6008 | Texxon Resources, Inc. | Winter Park, FL 32792 | Oil & Gas Operator | Dec 2025 |
| 6009 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 6010 | Thayer Exploration Company | Wetumka, OK 74883 | Gas Operator | Dec 1996 |
| 6011 | The Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 6012 | The Dehart Company LLC | Ardmore, OK 73402-0907 | Oil Operator | Oct 2025 |
| 6013 | The Elliott Oil Corporation | | Oil & Gas Operator | Oct 2025 |
| 6014 | The Galaxy Corporation | Sapulpa, OK 74066 | Oil & Gas Operator | Nov 2025 |
| 6015 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Sep 2025 |
| 6016 | The KT Oil Company LLC | Ada, OK 74820 | Oil & Gas Operator | Oct 2025 |
| 6017 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2025 |
| 6018 | The Twenty Eleven Corp Inc | Ada, OK 74820-3605 | Oil Operator | Oct 2025 |
| 6019 | The William R Earnhardt Company | Bristow, OK 74010 | Oil & Gas Operator | Oct 2025 |
| 6020 | Thomas B Rixleben | | Oil & Gas Operator | Jul 2008 |
| 6021 | Thomas E L | Tulsa, OK 74136-6302 | Oil & Gas Operator | Feb 2015 |
| 6022 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Oct 2025 |
| 6023 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 6024 | Thomas Oil Company LLC | Ardmore, OK 73401-3717 | Oil Operator | Oct 2025 |
| 6025 | Thomas Production | Electra, TX 76360 | Oil & Gas Operator | Mar 2015 |
| 6026 | Thomas Wayne Oil & Gas | Bristow, OK 74010-0544 | Oil & Gas Operator | Jan 2018 |
| 6027 | Thomas, Ellis W | | Oil & Gas Operator | Oct 2025 |
| 6028 | Thomas, R. W. Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 6029 | Thompson Felton | Dewey, OK 74029 | Oil Operator | Jul 1999 |
| 6030 | Thompson James R | Okmulgee, OK 74447 | Oil & Gas Operator | Sep 2025 |
| 6031 | Thompson Operating Co. | Abernathy, TX 79311 | Oil & Gas Operator | Aug 1994 |
| 6032 | Thompson Roy G | Bartlesville, OK 74006 | Oil & Gas Operator | Feb 1993 |
| 6033 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 6034 | THR Oil | Konawa, OK 74849 | Oil & Gas Operator | Jan 2014 |
| 6035 | Three D Resources Inc | Liberal, KS 67905 | Oil & Gas Operator | Sep 2025 |
| 6036 | Three Forks Resources, LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Dec 2025 |
| 6037 | Three MG Family Inc | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 6038 | Three Sands Investment Company | Waukomis, OK 73773 | Oil & Gas Operator | Nov 2025 |
| 6039 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 6040 | Three-N-One | | Oil Operator | Oct 2020 |
| 6041 | Threet David Allen | Sand Springs, OK 74063-4035 | Oil & Gas Operator | Sep 2025 |
| 6042 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 6043 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2025 |
| 6044 | Thunder Petroleum LLC | Owasso, OK 74055-1563 | Oil Operator | Aug 2025 |
| 6045 | Tickel Jim & Cindy | Blackwell, OK 74631-6015 | Oil Operator | Jan 2013 |
| 6046 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 6047 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 6048 | Tidemark Exploration Inc | Tulsa, OK 74120 | Oil & Gas Operator | Apr 2019 |
| 6049 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Nov 2025 |
| 6050 | Tidwell Oil LLC | Roff, OK 74865 | Oil Operator | Feb 2022 |
| 6051 | Tiger Eye Resources LLC | Hockley, TX 77447-6911 | Oil Operator | Oct 2012 |
| 6052 | Tiger Mountain Gas & Oil | Oklahoma City, OK 73118 | Gas Operator | Sep 1999 |
| 6053 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 6054 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Nov 2025 |
| 6055 | Tilford Pinson Exploration LLC | Edmond, OK 73003 | Oil & Gas Operator | Oct 2025 |
| 6056 | Tilley Matt Dba Tilley Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Oct 2025 |
| 6057 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Dec 2025 |
| 6058 | Tilley Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Nov 2025 |
| 6059 | Tillman Consulting LLC Dba B & C Operating | Mustang, OK 73064-8195 | Oil Operator | Jan 2022 |
| 6060 | Timber Hill Energy | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2011 |
| 6061 | Timbercreek Oil Company LLC | Healdton, OK 73438 | Oil Operator | Oct 2025 |
| 6062 | Timmy Cornett | Avant, OK 74001 | Oil Operator | Oct 2025 |
| 6063 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Jan 2025 |
| 6064 | Tindol Jr Robert | Ryan, OK 73565 | Oil Operator | Oct 2009 |
| 6065 | Tipperary Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 6066 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Jul 2025 |
| 6067 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Nov 2025 |
| 6068 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 6069 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Oct 2025 |
| 6070 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Oct 2025 |
| 6071 | TLC Oil And Gas | Duncan, OK 73533-9477 | Oil & Gas Operator | Oct 2015 |
| 6072 | TLM Resources Inc | Enid, OK 73706-0641 | Gas Operator | Mar 2015 |
| 6073 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Oct 2025 |
| 6074 | TLS Operating Company | Greenwood VIlge, CO 80111 | Oil & Gas Operator | Dec 2013 |
| 6075 | TNT Energy Inc. | Brownwood, TX 76801 | Oil & Gas Operator | May 2013 |
| 6076 | TNT Enterprizes | Coweta, OK 74429 | Oil & Gas Operator | Nov 2005 |
| 6077 | TNT Operating Company Inc | Blanchard, OK 73010 | Oil & Gas Operator | Oct 2025 |
| 6078 | Toco Oil & Gas Co | Grapevine, TX 76051 | Oil & Gas Operator | Feb 1993 |
| 6079 | Todd John C | Oklahoma City, OK 73112-8049 | Oil & Gas Operator | May 2015 |
| 6080 | Token Operating, LLC | Enid, OK 73703-1094 | Oil & Gas Operator | Nov 2025 |
| 6081 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 6082 | Toklan Oil Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 6083 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 6084 | Toland & Johnston Inc | Edmond, OK 73034 | Oil & Gas Operator | Nov 2025 |
| 6085 | Tolson Gary | Seminole, OK 74868-3267 | Oil & Gas Operator | Sep 2025 |
| 6086 | Toma Explorations LLC | Shawnee, OK 74801-6925 | Oil & Gas Operator | Feb 2025 |
| 6087 | Tomar Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2001 |
| 6088 | Tomlinson Interest | | Oil & Gas Operator | Jun 2013 |
| 6089 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 6090 | Tomlinson W E | Comanche, OK 73529-9561 | Oil Operator | Aug 1996 |
| 6091 | Tomorrows Energy Exploration Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2025 |
| 6092 | Tonkawa Saltwater Disposal LLC | Woodward, OK 73801 | Oil Operator | Dec 2015 |
| 6093 | Tonner Petroleum LLC | Dallas, TX 75248-3326 | Oil Operator | Feb 2011 |
| 6094 | Tony High Operating | Walters, OK 73572-3928 | Oil & Gas Operator | Jun 2018 |
| 6095 | Tony Oil Company | | Oil & Gas Operator | Oct 2025 |
| 6096 | Tony'S Disposal Service Inc | Yale, OK 74085 | Oil Operator | Aug 1997 |
| 6097 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Oct 2025 |
| 6098 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Nov 2025 |
| 6099 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 6100 | Topsail Secondary Recovery LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2025 |