| 1001 | Terry Production Co | Stroud, OK 74079-0475 | Oil & Gas Operator | Aug 2008 |
| 1002 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Dec 2025 |
| 1003 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 1004 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 1005 | Texas Energy Mutual LLC | Grapevine, TX 76051-8145 | Oil Operator | Jun 2018 |
| 1006 | Texocan Minerals Inc | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2000 |
| 1007 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 1008 | The Galaxy Corporation | Sapulpa, OK 74066 | Oil & Gas Operator | Feb 2026 |
| 1009 | The KT Oil Company LLC | Ada, OK 74820 | Oil & Gas Operator | Feb 2026 |
| 1010 | The William R Earnhardt Company | Bristow, OK 74010 | Oil & Gas Operator | Jan 2026 |
| 1011 | Thomas E L | Tulsa, OK 74136-6302 | Oil & Gas Operator | Feb 2015 |
| 1012 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Jan 2026 |
| 1013 | Thomas Oil Company LLC | Ardmore, OK 73401-3717 | Oil Operator | Feb 2026 |
| 1014 | Thomas Wayne Oil & Gas | Bristow, OK 74010-0544 | Oil & Gas Operator | Jan 2018 |
| 1015 | Thunder Petroleum LLC | Owasso, OK 74055-1563 | Oil Operator | Aug 2025 |
| 1016 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Feb 2026 |
| 1017 | Todd John C | Oklahoma City, OK 73112-8049 | Oil & Gas Operator | May 2015 |
| 1018 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2026 |
| 1019 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Apr 2026 |
| 1020 | Tomorrows Energy Exploration Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2026 |
| 1021 | Topsail Secondary Recovery LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2025 |
| 1022 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 1023 | Tower Energy Corporation | Sapulpa, OK 74067-0837 | Oil & Gas Operator | Mar 2015 |
| 1024 | Trace Operating Co & R Hudson | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 1025 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2026 |
| 1026 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Feb 2026 |
| 1027 | Transcoastal Operating LLC | Dallas, TX 75252-5646 | Oil & Gas Operator | Mar 2015 |
| 1028 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 1029 | Trend Gas & Oil Inc | Jenks, OK 74037 | Oil & Gas Operator | Dec 2000 |
| 1030 | Trilliant Energy Texas LTD | Tulsa, OK 74135-0767 | Oil & Gas Operator | Jun 2020 |
| 1031 | Triple W Oil Inc | Chandler, OK 74834-0546 | Oil & Gas Operator | May 2013 |
| 1032 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 1033 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Feb 2026 |
| 1034 | Trojan Resources LLC | Sapulpa, OK 74066-8095 | Oil Operator | Feb 2026 |
| 1035 | Troyer Howard E | Tulsa, OK 74133-8016 | Oil & Gas Operator | Dec 2014 |
| 1036 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 1037 | Tulsa Energy Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2013 |
| 1038 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Feb 2026 |
| 1039 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 1040 | Turner John O | Drumright, OK 74030-1216 | Oil & Gas Operator | Feb 1998 |
| 1041 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 1042 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 1043 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 1044 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 1045 | U. S. Energy Development Corporation | Fort Worth, TX 76164 | Oil & Gas Operator | Apr 2026 |
| 1046 | U.S. Oil Reclaimers, LLC | | Oil Operator | Jun 2023 |
| 1047 | Umberham Oil Company Inc | Oklahoma City, OK 73151-4000 | Oil & Gas Operator | Feb 2026 |
| 1048 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 1049 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2026 |
| 1050 | United Energy & Expl Inc | Ada, OK 74821-2449 | Oil & Gas Operator | Feb 2026 |
| 1051 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Feb 2026 |
| 1052 | United Oil Corporation | Denver, CO 80202-3813 | Oil & Gas Operator | Jan 2026 |
| 1053 | United Primary Resources Inc | Milton, WA 98354-9361 | Oil & Gas Operator | Feb 2016 |
| 1054 | Uplands Resources Inc | Tulsa, OK 74103-4141 | Oil & Gas Operator | Feb 2026 |
| 1055 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2026 |
| 1056 | Usedc Okc LLC | Getzville, NY 14068-1296 | Oil & Gas Operator | May 2018 |
| 1057 | Vaco Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2003 |
| 1058 | Valar Petroleum Inc | Houston, TX 77069 | Oil & Gas Operator | May 2006 |
| 1059 | Van Horn I H | Tulsa, OK 74145-5715 | Oil & Gas Operator | Mar 2001 |
| 1060 | Van Orsdol Paul | Bristow, OK 74010 | Oil & Gas Operator | Feb 2026 |
| 1061 | Van Zandt Marilyn | Depew, OK 74028 | Gas Operator | Jan 2026 |
| 1062 | Varner Jerry D And Helen Revocable Inter VIvos Trust | Bristow, OK 74010 | Oil Operator | Jan 2026 |
| 1063 | Vectra CBM LLC | Littleton, CO 80128-4557 | Gas Operator | Jan 2014 |
| 1064 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 1065 | Ventura Energy Services LLC | Tulsa, OK 74136-5108 | Oil & Gas Operator | Mar 2020 |
| 1066 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 1067 | Veteran Exploration & Prod, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 1068 | Vike Oil Inc | Drumright, OK 74030 | Oil & Gas Operator | Feb 2026 |
| 1069 | Vincent Production Company | | Oil & Gas Operator | Dec 2006 |
| 1070 | Vitol Inc. | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 1071 | W F D Oil Corp. | Edmond, OK 73012 | Oil & Gas Operator | Jan 2026 |
| 1072 | W P Oil & Gas LLC | Coweta, OK 74429-5465 | Oil & Gas Operator | Mar 2015 |
| 1073 | Wachob Oil & Gas LLC | Sapulpa, OK 74066-6987 | Oil Operator | Jun 2015 |
| 1074 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2026 |
| 1075 | Waggoner Drilling Company | Bristow, OK 74010-0663 | Oil & Gas Operator | Jan 2014 |
| 1076 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 1077 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 1078 | Wandering Star Partners #1 LLLP | | Oil & Gas Operator | Apr 2015 |
| 1079 | Ward Kelly | Drumright, OK 74030-5661 | Oil & Gas Operator | Feb 2015 |
| 1080 | Warner Gona Revocable Trust | Sand Springs, OK 74063-5296 | Oil & Gas Operator | May 2009 |
| 1081 | Warner Production LLC | Mannford, OK 74044-6182 | Oil & Gas Operator | Feb 2026 |
| 1082 | Warpath Energy Inc | Broken Arrow, OK 74014-1118 | Oil & Gas Operator | Apr 2018 |
| 1083 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Feb 2026 |
| 1084 | Watkins J L | Henryetta, OK 74437 | Oil & Gas Operator | Feb 2026 |
| 1085 | Watkins Oil Company | Claremore, OK 74017 | Oil & Gas Operator | May 2018 |
| 1086 | Watts Keith | Bristow, OK 74010-4996 | Oil Operator | Oct 2025 |
| 1087 | Wave Energy LLC | Jennings, OK 74038 | Oil Operator | Feb 2026 |
| 1088 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Apr 2026 |
| 1089 | Webb Roy C | Davis, OK 73030 | Oil & Gas Operator | Dec 2025 |
| 1090 | Weins Horton L | Sand Springs, OK 74063 | Oil & Gas Operator | Jan 2026 |
| 1091 | Welch Family LLC | Drumright, OK 74030 | Oil Operator | Feb 2026 |
| 1092 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 1093 | Wells Allen W | Barnsdall, OK 74002 | Oil & Gas Operator | Feb 2026 |
| 1094 | Wells Edward K | Sapulpa, OK 74066-4243 | Oil & Gas Operator | Jun 2004 |
| 1095 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Feb 2026 |
| 1096 | Wessel Oil And Gas | Cushing, OK 74023-9580 | Oil & Gas Operator | Mar 2015 |
| 1097 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2026 |
| 1098 | Western Petroleum Company Inc | Tulsa, OK 74170-2676 | Oil & Gas Operator | Apr 2020 |
| 1099 | Westfall-Gooden Reserves LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2026 |
| 1100 | Westshore Operating Inc | Naples, FL 34109-0549 | Oil & Gas Operator | Dec 2011 |