| 1801 | Turner Oil Company | Yale, OK 74085-0234 | Oil & Gas Operator | Nov 2014 |
| 1802 | Turner Oliver E | Bridgeville, PA 15017-2822 | Gas Operator | Dec 1998 |
| 1803 | Turner Petroleum Corp And Patrick Petroleum Corp | | Oil & Gas Operator | Mar 1991 |
| 1804 | Turner Production | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 1805 | Turner Production Co | Dallas, TX 75206 | Oil & Gas Operator | Nov 2023 |
| 1806 | Turner Randall L | Duncan, OK 73533-4826 | Oil Operator | Oct 2025 |
| 1807 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Nov 2025 |
| 1808 | Turner Smith & Associates | Englewood, CO 80111 | Oil & Gas Operator | May 1994 |
| 1809 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 1810 | Turner, Greg | Cross Plains, TX 76443 | Oil & Gas Operator | Feb 2026 |
| 1811 | Turner, Jack L | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 1812 | Turner, M. O. | San Antonio, TX 78278 | Oil & Gas Operator | Apr 2003 |
| 1813 | Turner, Randy | Olney, TX 76374 | Oil & Gas Operator | Jan 2005 |
| 1814 | Turning Point Oil, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Jan 2021 |
| 1815 | Turnkey E&P Corporation | | Oil & Gas Operator | Dec 2010 |
| 1816 | Turntable Energy Inc | Ponca City, OK 74604 | Oil & Gas Operator | Oct 2025 |
| 1817 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | Nov 2025 |
| 1818 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 1819 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 1820 | Turrentine Oil And Gas | Levelland, TX 79336 | Oil & Gas Operator | Feb 1996 |
| 1821 | Turrill Sheldon L | Westerville, OH 43081 | Oil & Gas Operator | Dec 1984 |
| 1822 | Turtle Mountain Gas & Oil, Inc. | | Oil & Gas Operator | Oct 2006 |
| 1823 | Tuscany Deli & Meats, Inc. | Fredonia, NY 14063 | Gas Operator | Dec 2024 |
| 1824 | Tuscany Gas Limited Liability Company | | Gas Operator | Dec 2021 |
| 1825 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 1826 | Tuscola Energy Inc | | Oil & Gas Operator | Dec 2025 |
| 1827 | Tuskar (Texas), Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2016 |
| 1828 | Tussel Clarence Jr | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2019 |
| 1829 | Tutcher, Dan C. | Houston, TX 77002 | Oil Operator | Dec 2004 |
| 1830 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 1831 | Tuthill S Keith & Bill Barbee | Amarillo, TX 79101-1427 | Oil & Gas Operator | Dec 2004 |
| 1832 | Tuway Oil, Inc | | Oil & Gas Operator | Jun 2006 |
| 1833 | TW Oil LLC | Fordsville, KY 42343 | Oil & Gas Operator | Dec 2024 |
| 1834 | TW Phillips Gas Supply Corp | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2011 |
| 1835 | Twain Energy LLC | Ridgeland, MS 39157 | Oil & Gas Operator | Dec 2025 |
| 1836 | TWC Oil Company, Inc. | | Oil Operator | Jan 2025 |
| 1837 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 1838 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2025 |
| 1839 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Feb 2026 |
| 1840 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2026 |
| 1841 | Twin Arrow Inc | Rangely, CO 81648 | Oil & Gas Operator | Sep 2009 |
| 1842 | Twin City Gas | | Gas Operator | Nov 1997 |
| 1843 | Twin Eagle Petro | | Oil Operator | Aug 1990 |
| 1844 | Twin Eagle Petro Corp | | Gas Operator | Feb 1990 |
| 1845 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 1846 | Twin M, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Sep 2025 |
| 1847 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |
| 1848 | Twin Oil Partnership LLC | | Oil Operator | Dec 2024 |
| 1849 | Twin Star Petrol | | Oil & Gas Operator | Jan 1989 |
| 1850 | Twin Star Petroleum, Inc. | Tulsa, OK 74146 | Gas Operator | Feb 1998 |
| 1851 | Twin Valley Enterprises, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jan 2013 |
| 1852 | Twiner Oil & Gas Corporation | | Oil & Gas Operator | Oct 1988 |
| 1853 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2024 |
| 1854 | Twinoco | Caney, KS 67333 | Oil Operator | Nov 1996 |
| 1855 | Twins Oil Co. | Monahans, TX 79756 | Oil & Gas Operator | Feb 2026 |
| 1856 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 1857 | Twisted Resources Inc | Blanchard, OK 73010-8463 | Oil & Gas Operator | Dec 2025 |
| 1858 | TWM Production Co., A General Partnership | Chanute, KS 66720 | Oil Operator | May 2025 |
| 1859 | Two Bay Petroleum | | Oil & Gas Operator | Dec 2010 |
| 1860 | Two Bayous, Inc. | | Oil & Gas Operator | Dec 2024 |
| 1861 | Two Bit Operating Company LLC | Fort Worth, TX 76110 | Oil & Gas Operator | Feb 2026 |
| 1862 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 1863 | Two Gems Company | McAlester, OK 74502-1996 | Oil & Gas Operator | Nov 2025 |
| 1864 | Two Oaks Operating Company, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2008 |
| 1865 | Two P Partners, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 1866 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 1867 | Twojo, Inc. | Longview, TX 75601 | Oil & Gas Operator | Nov 1996 |
| 1868 | TX Enhanced Oil Recovery Co, LLC | Sealy, TX 77474 | Oil & Gas Operator | Feb 2026 |
| 1869 | TX Heat Of The Permian Basin Inc | Odessa, TX 79768 | Oil & Gas Operator | Dec 2021 |
| 1870 | TX Lone Star Operating Co, LLC | Sulphur SPGS, TX 75483 | Oil & Gas Operator | Feb 2026 |
| 1871 | TX Meridian Opr Co Inc | Houston, TX 77079-2461 | Gas Operator | Dec 1989 |
| 1872 | TX Petroleum Company | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 1996 |
| 1873 | Txco Resources Inc. | San Antonio, TX 78280 | Oil & Gas Operator | Feb 2026 |
| 1874 | Txla Energy, Inc. | Houston, TX 77018 | Oil & Gas Operator | Feb 2026 |
| 1875 | Txo Prod Corp.-Arkla Expl. Co. | | Oil & Gas Operator | Dec 1990 |
| 1876 | Txo Producing Properties Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 1993 |
| 1877 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 1878 | Txo Production Corp/Amh O&G Co | | Oil & Gas Operator | Dec 1990 |
| 1879 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 1880 | Txok Texas Energy Resources,L.P. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2008 |
| 1881 | Txon Partners, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2017 |
| 1882 | TXP Operating Co. | | Oil & Gas Operator | Jul 1992 |
| 1883 | TXP, Incorporated | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 1884 | Txu Fuel Company | Dallas, TX 75201 | Oil & Gas Operator | May 2004 |
| 1885 | Txu Gas Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2004 |
| 1886 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |
| 1887 | TXX Operating LLC | Shreveport, LA 71133 | Oil & Gas Operator | Feb 2026 |
| 1888 | Ty-Tex Exploration, Inc. | Tyler, TX 75711 | Oil Operator | Dec 2000 |
| 1889 | Tyco Incorporate | | Oil & Gas Operator | Oct 1995 |
| 1890 | Tyco Oil Co. | | Oil Operator | Jul 2025 |
| 1891 | Tyco Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2026 |
| 1892 | Tyco, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jan 1998 |
| 1893 | Tyco, Inc. (Colorado Corporation) | Independence, KS 67301 | Gas Operator | Jun 1998 |
| 1894 | Tygr Operating Company, LLC | | Oil & Gas Operator | Nov 2024 |
| 1895 | Tyl Oil | Canon City, CO 81212 | Gas Operator | May 1994 |
| 1896 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 1897 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |
| 1898 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 1899 | Tyler Production, LLC | | Oil & Gas Operator | Jul 2013 |
| 1900 | Tyler Rockies Exploration LTD | Tyler, TX 75710-0119 | Oil & Gas Operator | Dec 2025 |