| 6001 | Terzan Energy II LLC | Chandler, OK 74834 | Oil & Gas Operator | Jun 2024 |
| 6002 | Tesoro Expl. & Prod. Company | San Antonio, TX 78216 | Gas Operator | Sep 2010 |
| 6003 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2024 |
| 6004 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 6005 | Tetra Energy LLC | Fort Smith, AR 72917-0476 | Gas Operator | Oct 2019 |
| 6006 | Tex-Ok Energy LP | Cody, WY 82414 | Oil & Gas Operator | Jul 2024 |
| 6007 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Jul 2024 |
| 6008 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 6009 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jun 2024 |
| 6010 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 6011 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 6012 | Texakoma Exploration & Production LLC | Plano, TX 75024 | Oil & Gas Operator | Apr 2024 |
| 6013 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 6014 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Oct 2024 |
| 6015 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 6016 | Texas Crude Exploration, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 1992 |
| 6017 | Texas Energies, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Aug 1998 |
| 6018 | Texas Energy & Environmental | Houston, TX 77070 | Oil & Gas Operator | Nov 1998 |
| 6019 | Texas Energy Mutual LLC | Grapevine, TX 76051-8145 | Oil Operator | Jun 2018 |
| 6020 | Texas Energy Operations, LC | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2024 |
| 6021 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 6022 | Texas Mineral Group | Midland, TX 79705 | Oil & Gas Operator | Aug 2013 |
| 6023 | Texas Moran Exploration Company | Houston, TX 77098 | Oil & Gas Operator | Jun 2023 |
| 6024 | Texas Oil & Gas Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 6025 | Texas Southwest Gas LLC | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2022 |
| 6026 | Texas United Petroleum Inc | Dallas, TX 75243 | Oil & Gas Operator | Jun 2003 |
| 6027 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 6028 | Texcal Oil Inc. | Vidor, TX 77662 | Oil & Gas Operator | Jun 1999 |
| 6029 | Texcel Exploration, Inc. | Colorado SPGS, CO 80960 | Oil & Gas Operator | Oct 2024 |
| 6030 | Texican Crude & Hydrocarbons LLC | Houston, TX 77002 | Oil Operator | Sep 2023 |
| 6031 | Texinia Corp | Dallas, TX 75201 | Oil & Gas Operator | Jun 2015 |
| 6032 | Texinia Limited Partnership | Dallas, TX 75201 | Gas Operator | Jan 2017 |
| 6033 | Texinia Oil & Gas Inc. | Dallas, TX 75214 | Oil & Gas Operator | Jun 2024 |
| 6034 | Texla Energy Products LLC | Houston, TX 77002 | Oil Operator | Sep 2020 |
| 6035 | Texland Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 6036 | Texocan Minerals Inc | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2000 |
| 6037 | Texoma Oil & Gas Corporation | Longview, TX 75604-3137 | Oil Operator | Apr 2014 |
| 6038 | Texxon Resources, Inc. | Winter Park, FL 32792 | Oil & Gas Operator | Oct 2024 |
| 6039 | TGT Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Jun 2024 |
| 6040 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 6041 | The Elliott Oil Corporation | | Oil & Gas Operator | Jun 2024 |
| 6042 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Jun 2024 |
| 6043 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 6044 | The KT Oil Company LLC | Ada, OK 74820 | Oil Operator | Jun 2024 |
| 6045 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Jul 2024 |
| 6046 | The Twenty Eleven Corp Inc | Ada, OK 74820-3605 | Oil Operator | May 2024 |
| 6047 | The Warren Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2016 |
| 6048 | The William R Earnhardt Company | Bristow, OK 74010 | Oil & Gas Operator | Jun 2024 |
| 6049 | Thomas B Rixleben | | Oil & Gas Operator | Jul 2008 |
| 6050 | Thomas E L | Tulsa, OK 74136-6302 | Oil & Gas Operator | Feb 2015 |
| 6051 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Jun 2024 |
| 6052 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 6053 | Thomas Oil Company LLC | Ardmore, OK 73401-3717 | Oil Operator | Jul 2024 |
| 6054 | Thomas Production | Electra, TX 76360 | Oil & Gas Operator | Mar 2015 |
| 6055 | Thomas Production Co Inc | | Oil & Gas Operator | Mar 2015 |
| 6056 | Thomas Wayne Oil & Gas | Bristow, OK 74010-0544 | Oil & Gas Operator | Jan 2018 |
| 6057 | Thomas, Ellis W | | Oil & Gas Operator | Jun 2024 |
| 6058 | Thomas, R. W. Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 6059 | Thompson Felton | Dewey, OK 74029 | Oil Operator | Jul 1999 |
| 6060 | Thompson James R | Okmulgee, OK 74447 | Oil & Gas Operator | May 2024 |
| 6061 | Thompson Operating Co. | Abernathy, TX 79311 | Oil & Gas Operator | Aug 1994 |
| 6062 | Thompson Roy G | Bartlesville, OK 74006 | Oil & Gas Operator | Feb 1993 |
| 6063 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 6064 | THR Oil | Konawa, OK 74849 | Oil & Gas Operator | Jan 2014 |
| 6065 | Three Forks Resources LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Oct 2024 |
| 6066 | Three MG Family Inc | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 6067 | Three Sands Investment Company | Waukomis, OK 73773 | Oil & Gas Operator | Jun 2024 |
| 6068 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 6069 | Three-D Resources, Inc. | Liberal, KS 67905 | Oil & Gas Operator | Jun 2024 |
| 6070 | Three-N-One | | Oil Operator | Oct 2020 |
| 6071 | Threet David Allen | Sand Springs, OK 74063-4035 | Oil & Gas Operator | Jun 2024 |
| 6072 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 6073 | THT Disposals LLC | Lindsay, OK 73052-0519 | Oil Operator | Feb 2014 |
| 6074 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2024 |
| 6075 | Thunder Petroleum LLC | Owasso, OK 74055-1563 | Oil Operator | Sep 2022 |
| 6076 | Tickel Jim & Cindy | Blackwell, OK 74631-6015 | Oil Operator | Jan 2013 |
| 6077 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 6078 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 6079 | Tidemark Exploration Inc | Tulsa, OK 74120 | Oil & Gas Operator | Apr 2019 |
| 6080 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Jun 2024 |
| 6081 | Tidwell Oil LLC | Roff, OK 74865 | Oil Operator | Feb 2022 |
| 6082 | Tiger Eye Resources LLC | Hockley, TX 77447-6911 | Oil Operator | Oct 2012 |
| 6083 | Tiger Mountain Gas & Oil | Oklahoma City, OK 73118 | Gas Operator | Sep 1999 |
| 6084 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 6085 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Jul 2024 |
| 6086 | Tilford Pinson Exploration LLC | Edmond, OK 73003 | Oil & Gas Operator | Jun 2024 |
| 6087 | Tilley Matt Dba Tilley Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jun 2024 |
| 6088 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Oct 2024 |
| 6089 | Tilley Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2024 |
| 6090 | Tillman Consulting LLC Dba B & C Operating | Mustang, OK 73064-8195 | Oil Operator | Jan 2022 |
| 6091 | Timber Hill Energy | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2011 |
| 6092 | Timbercreek Oil Company LLC | Healdton, OK 73438 | Oil Operator | Mar 2024 |
| 6093 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Aug 2024 |
| 6094 | Tindol Jr Robert | Ryan, OK 73565 | Oil Operator | Oct 2009 |
| 6095 | Tipperary Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 6096 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | May 2024 |
| 6097 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Jul 2024 |
| 6098 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Oct 2024 |
| 6099 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Jun 2024 |
| 6100 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Jun 2024 |