| 1801 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 1802 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |
| 1803 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 1804 | Tyler Production, LLC | | Oil & Gas Operator | Jul 2013 |
| 1805 | Tyler Rockies Exploration LTD | Tyler, TX 75710-0119 | Oil & Gas Operator | Sep 2024 |
| 1806 | Tyluka Operations, LLC | Hays, KS 67601 | Oil Operator | Jun 2024 |
| 1807 | Tyner Texas Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Nov 2024 |
| 1808 | Tyrex Oil Company | Casper, WY 82602 | Oil & Gas Operator | May 1997 |
| 1809 | Tyro Oil Develop | | Oil Operator | Jul 1991 |
| 1810 | Tyrok | | Oil & Gas Operator | Nov 2010 |
| 1811 | Tysco Oil And Gas Corp. | | Oil & Gas Operator | Jun 2024 |
| 1812 | Tyson Gary | Hobart, OK 73651-6413 | Oil & Gas Operator | Mar 2018 |
| 1813 | Tyson Oil Co. | | Oil Operator | Jul 2024 |
| 1814 | Tyson Olan | Hobart, OK 73651-6413 | Oil & Gas Operator | Apr 2015 |
| 1815 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |