| 1 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 2 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 3 | Tag Oil Co LLC | Ringling, OK 73456 | Oil & Gas Operator | Jun 2025 |
| 4 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 5 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 6 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 7 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 8 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 9 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | Jul 2025 |
| 10 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jun 2025 |
| 11 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 12 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Jun 2025 |
| 13 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 14 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2025 |
| 15 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Jul 2025 |
| 16 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 17 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Aug 2025 |
| 18 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Jul 2025 |
| 19 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jun 2025 |
| 20 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 21 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 22 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 23 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Jul 2025 |
| 24 | The Twenty Eleven Corp Inc | Ada, OK 74820-3605 | Oil Operator | Jun 2025 |
| 25 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Jun 2025 |
| 26 | Thomas Oil Company LLC | Ardmore, OK 73401-3717 | Oil Operator | Jun 2025 |
| 27 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |
| 28 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 29 | Tilley Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2025 |
| 30 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Jul 2025 |
| 31 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 32 | TLC Oil And Gas | Duncan, OK 73533-9477 | Oil & Gas Operator | Oct 2015 |
| 33 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Jun 2025 |
| 34 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 35 | Tomar Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2001 |
| 36 | Tomlinson W E | Comanche, OK 73529-9561 | Oil Operator | Aug 1996 |
| 37 | Tony'S Disposal Service Inc | Yale, OK 74085 | Oil Operator | Aug 1997 |
| 38 | Totah Production | Duncan, OK 73533-9406 | Oil Operator | Mar 2015 |
| 39 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 40 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Oct 2025 |
| 41 | Tri Production Inc | Healdton, OK 73438 | Oil & Gas Operator | Jun 2025 |
| 42 | Triangle Interprises Inc | Justin, TX 76247-0598 | Oil & Gas Operator | Jun 2015 |
| 43 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 44 | Troy Energy Operating LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jul 2025 |
| 45 | Turner Randall L | Duncan, OK 73533-4826 | Oil Operator | Jun 2025 |
| 46 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 47 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 2025 |
| 48 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 49 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 50 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |