| 5901 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 5902 | Taber Oil Co | | Oil Operator | Sep 2018 |
| 5903 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 5904 | Tag Oil Co LLC | Ringling, OK 73456 | Oil & Gas Operator | Sep 2025 |
| 5905 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Dec 2025 |
| 5906 | Tag Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2021 |
| 5907 | Tag Team Resources LLC | Eufaula, OK 74432 | Oil & Gas Operator | Nov 2025 |
| 5908 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 5909 | Talbert, Eugene Operating Co,Inc | Tyler, TX 75702 | Oil & Gas Operator | Dec 1997 |
| 5910 | Tallgrass Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 5911 | Tallgrass Petroleum Corporation | | Oil & Gas Operator | Feb 2012 |
| 5912 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 5913 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 5914 | Tamworth Resources LLC | Broken Arrow, OK 74012-0005 | Oil & Gas Operator | Oct 2025 |
| 5915 | Tandem Oil Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 1998 |
| 5916 | Tank Truck'S Inc | Sapulpa, OK 74066 | Oil Operator | Dec 2025 |
| 5917 | Tap Petroleum Inc | Cleveland, OK 74020-0054 | Oil & Gas Operator | Apr 2020 |
| 5918 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 5919 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2025 |
| 5920 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 5921 | Tarka Energy LLC | Houston, TX 77056-1940 | Oil & Gas Operator | Mar 2022 |
| 5922 | Tarrant Tracy Dba Trace Oil | Crescent, OK 73028 | Oil & Gas Operator | Feb 2021 |
| 5923 | Tarwater Oil & Gas LLC | San Jose, CA 95128-4219 | Oil & Gas Operator | Dec 2023 |
| 5924 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 5925 | Tate Exploration | Lakin, KS 67860 | Oil & Gas Operator | Sep 1994 |
| 5926 | Tau Ventures | Tulsa, OK 74105-1026 | Oil & Gas Operator | Oct 2025 |
| 5927 | Taubert & Steed | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2001 |
| 5928 | Taurus Minerals Inc /Osage Only | | Oil Operator | Aug 2013 |
| 5929 | Taurus Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 5930 | Taylor Cliff | | Oil & Gas Operator | Oct 2025 |
| 5931 | Taylor Energy Corporation | Amarillo, TX 79114 | Oil & Gas Operator | Feb 1999 |
| 5932 | Taylor International Inc | Drumright, OK 74030-1173 | Oil & Gas Operator | Mar 2020 |
| 5933 | Taylor James A | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 5934 | Taylor Oil Company | Edmond, OK 73034 | Oil & Gas Operator | Sep 2025 |
| 5935 | Taylor Petroleum LLC | Crescent, OK 73028-0340 | Oil & Gas Operator | Dec 2016 |
| 5936 | Taylor Production Company | Collinsville, OK 74021 | Oil Operator | Nov 1998 |
| 5937 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 5938 | Taylor R Clark Exploration Inc | | Oil & Gas Operator | Aug 1992 |
| 5939 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 5940 | TC Energy LLC | Covington, OK 73730-2116 | Oil & Gas Operator | Sep 2014 |
| 5941 | TC Oil LLC | Duncan, OK 73533 | Oil Operator | Oct 2025 |
| 5942 | TC3 Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Jul 1996 |
| 5943 | Tcina Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2023 |
| 5944 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 5945 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | Nov 2025 |
| 5946 | Te-Ray Energy Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Oct 2025 |
| 5947 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2025 |
| 5948 | Teafatiller Limuel & Rita | Marietta, OK 73448-0321 | Oil & Gas Operator | Feb 2002 |
| 5949 | Teale F William | Tulsa, OK 74136-1017 | Oil & Gas Operator | Jun 2000 |
| 5950 | Tec Resources LLC | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 5951 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Oct 2025 |
| 5952 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 5953 | Tee Cee'S Inc | Drumright, OK 74030 | Oil & Gas Operator | Nov 2025 |
| 5954 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 5955 | Tekenergy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 5956 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Dec 2025 |
| 5957 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 5958 | Temex Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 5959 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 5960 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 5961 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 5962 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Oct 2025 |
| 5963 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Oct 2025 |
| 5964 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Nov 2025 |
| 5965 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 5966 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 5967 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 5968 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 5969 | Terrapet Corporation | | Oil & Gas Operator | Jun 2011 |
| 5970 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Oct 2025 |
| 5971 | Terraquest Corporation | Edmond, OK 73034 | Oil & Gas Operator | Jul 1997 |
| 5972 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Nov 2025 |
| 5973 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 5974 | Terry John Trust | Aurora, CO 80012-5112 | Oil & Gas Operator | May 2016 |
| 5975 | Terry Production Co | Stroud, OK 74079-0475 | Oil & Gas Operator | Aug 2008 |
| 5976 | Terzan Energy II LLC | Chandler, OK 74834 | Oil & Gas Operator | Nov 2025 |
| 5977 | Tesoro Expl. & Prod. Company | San Antonio, TX 78216 | Gas Operator | Sep 2010 |
| 5978 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 5979 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 5980 | Tex-Ok Energy, Limited Partnership | Cody, WY 82414 | Oil & Gas Operator | Nov 2025 |
| 5981 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Nov 2025 |
| 5982 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 5983 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Sep 2025 |
| 5984 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 5985 | Texaco Oils Inc | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 5986 | Texakoma Exploration & Production LLC | Plano, TX 75024 | Oil & Gas Operator | May 2025 |
| 5987 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 5988 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Mar 2025 |
| 5989 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 5990 | Texas Crude Exploration Inc | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 1992 |
| 5991 | Texas Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Aug 1998 |
| 5992 | Texas Energy & Environmental | Houston, TX 77070 | Oil & Gas Operator | Nov 1998 |
| 5993 | Texas Energy Mutual LLC | Grapevine, TX 76051-8145 | Oil Operator | Jun 2018 |
| 5994 | Texas Energy Operations, LC | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 5995 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 5996 | Texas Mineral Group | Midland, TX 79705 | Oil & Gas Operator | Aug 2013 |
| 5997 | Texas Moran Exploration Company | Houston, TX 77098 | Oil & Gas Operator | Jun 2023 |
| 5998 | Texas Oil & Gas Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 5999 | Texas United Petroleum Inc | Dallas, TX 75243 | Oil & Gas Operator | Jun 2003 |
| 6000 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |