| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | T. C. Morrow Oil Co. | Oil & Gas Operator | Apr 1991 | |
| 2 | T.O. Greer Productions | Oil & Gas Operator | Aug 2013 | |
| 3 | Tellurian Operating LLC | Oil & Gas Operator | Jun 2024 | |
| 4 | Tennessee Gas Pipeline Company | Oil & Gas Operator | Dec 2011 | |
| 5 | Terral D Hinds | Oil Operator | Mar 2012 | |
| 6 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 7 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Oct 2025 |
| 8 | Tri-Par Exploration, Inc. | Oil Operator | Oct 2001 | |
| 9 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |