| 1 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 2 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Mar 2025 |
| 3 | Tarrant Tracy Dba Trace Oil | Crescent, OK 73028 | Oil & Gas Operator | Feb 2021 |
| 4 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 5 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | Mar 2025 |
| 6 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2025 |
| 7 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Feb 2025 |
| 8 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 9 | Tekenergy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 10 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 11 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Mar 2025 |
| 12 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Feb 2025 |
| 13 | Teocalli Exploration LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2025 |
| 14 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 15 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Feb 2025 |
| 16 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 17 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Mar 2025 |
| 18 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 19 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 20 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 21 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 22 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 23 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 24 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2025 |
| 25 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 26 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 27 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 28 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 29 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 30 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Jun 2025 |
| 31 | Tipperary Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 32 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Feb 2025 |
| 33 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Mar 2025 |
| 34 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Feb 2025 |
| 35 | TLS Operating Company | Greenwood VIlge, CO 80111 | Oil & Gas Operator | Dec 2013 |
| 36 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 37 | Tower Oil & Gas Company, Inc. | Englewood, CO 80111 | Oil & Gas Operator | May 2001 |
| 38 | Tpet, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 39 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 40 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Mar 2025 |
| 41 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 42 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 43 | Traynor Oil & Gas Inc | Claremont, CA 91711-2837 | Oil & Gas Operator | Jan 2024 |
| 44 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Jun 2025 |
| 45 | Trepel Petroleum Exploration & | | Oil & Gas Operator | Apr 2014 |
| 46 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Mar 2025 |
| 47 | Trigg Drilling Company Inc | Oklahoma City, OK 73105 | Oil & Gas Operator | Jan 2013 |
| 48 | Triple L Management Co Inc | Edmond, OK 73025-2908 | Oil & Gas Operator | Apr 2018 |
| 49 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 50 | Triumph Energy Partners LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Feb 2025 |
| 51 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Mar 2025 |
| 52 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Jan 2025 |
| 53 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2025 |
| 54 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 55 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Mar 2025 |
| 56 | Twisted Resources Inc | Blanchard, OK 73010-8463 | Oil & Gas Operator | Mar 2025 |
| 57 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 58 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |