| 27801 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 27802 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | May 2026 |
| 27803 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | May 2026 |
| 27804 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 27805 | Sylvite Corp | Tulsa, OK 741363908 | Oil & Gas Operator | Dec 2000 |
| 27806 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | May 2026 |
| 27807 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | May 2026 |
| 27808 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 27809 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 27810 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2026 |
| 27811 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 27812 | Synergy Offshore LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2022 |
| 27813 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Dec 2025 |
| 27814 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 27815 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 27816 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 27817 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 27818 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Nov 2025 |
| 27819 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 27820 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 27821 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | May 2026 |
| 27822 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | May 2026 |
| 27823 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |
| 27824 | T & A Resources LLC | Salyersville, KY 41465 | Oil Operator | Dec 2023 |
| 27825 | T & B Drilling, Inc | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 27826 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 27827 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 27828 | T & C MFG. & Operating, Inc. | Great Bend, KS 67530 | Oil Operator | May 2022 |
| 27829 | T & C Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2024 |
| 27830 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2026 |
| 27831 | T & D Oil Co. | Victoria, KS 67671 | Oil Operator | Apr 1996 |
| 27832 | T & D Oil Compan | | Oil Operator | Jan 1992 |
| 27833 | T & D Oil LLC (Osage Only) | | Oil & Gas Operator | Feb 2026 |
| 27834 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2025 |
| 27835 | T & F Oil Company | | Oil Operator | Jan 2025 |
| 27836 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 27837 | T & G Energy LLC | Dallas, TX 75230 | Oil Operator | Nov 2010 |
| 27838 | T & G Holding LLC | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Mar 2015 |
| 27839 | T & G Oil Operations LLC | | Oil Operator | Jan 2026 |
| 27840 | T & G Oil, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2010 |
| 27841 | T & I Petroleum Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2005 |
| 27842 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Mar 2026 |
| 27843 | T & J Operating | Ada, OK 74821-1547 | Oil Operator | Feb 2012 |
| 27844 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 27845 | T & L Oil Production | | Oil Operator | Jan 2025 |
| 27846 | T & L Production | | Oil Operator | May 1987 |
| 27847 | T & L Production Company | | Oil Operator | Feb 1984 |
| 27848 | T & M Gauging | | Oil Operator | Oct 2006 |
| 27849 | T & M Oil & Royalty | Ada, OK 74820 | Oil & Gas Operator | Mar 2026 |
| 27850 | T & M Oil Company | Midlothian, TX 76065 | Oil & Gas Operator | May 2026 |
| 27851 | T & O Gas Co | | Oil Operator | May 2001 |
| 27852 | T & P Exploration | Addison, TX 75006 | Oil & Gas Operator | Aug 1993 |
| 27853 | T & P Oil & Gas, L.L.C. | Overland Park, KS 66212 | Oil Operator | Dec 2009 |
| 27854 | T & R Investments, Inc. | Borger, TX 79008 | Oil & Gas Operator | Nov 1995 |
| 27855 | T & R Oil Company, A General Partnership | Moline, KS 67353 | Oil Operator | Dec 2019 |
| 27856 | T & T Compression Inc | Clymer, PA 15728-1014 | Gas Operator | Dec 2025 |
| 27857 | T & T Contracting Dba Hulman Contracting, LLC | Rockfield, KY 42274 | Oil & Gas Operator | Dec 2024 |
| 27858 | T & T Oil Co. | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2002 |
| 27859 | T & T Production Co. | Victoria, TX 77902 | Oil & Gas Operator | Feb 1995 |
| 27860 | T & W Ward Oil LLC | Blackwell, OK 74631 | Oil Operator | Mar 2026 |
| 27861 | T - C Oil Company | Refugio, TX 78377 | Oil & Gas Operator | Jan 2012 |
| 27862 | T And DS Lube Doctors LLC | Carlsbad, NM 88220 | Gas Operator | Mar 2026 |
| 27863 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Feb 2026 |
| 27864 | T And S Exploration LLC | | Oil Operator | Feb 2026 |
| 27865 | T B C Inc | Coweta, OK 74429 | Oil & Gas Operator | Apr 2020 |
| 27866 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 27867 | T B K Energy Company | Brenham, TX 77833 | Oil & Gas Operator | Feb 2026 |
| 27868 | T Bar M Energy Resources LLC | Sapulpa, OK 74066 | Oil & Gas Operator | Feb 2026 |
| 27869 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 27870 | T C Production | | Oil Operator | May 1994 |
| 27871 | T D Cox Oil Corporation | | Oil & Gas Operator | Feb 2026 |
| 27872 | T D Energy Company Inc | Broken Arrow, OK 74011-3953 | Oil & Gas Operator | Feb 2015 |
| 27873 | T Dozer D Oil Co. | Goree, TX 76363 | Oil & Gas Operator | May 2026 |
| 27874 | T E F Inc | Madill, OK 73446-6656 | Oil & Gas Operator | Jul 2023 |
| 27875 | T E L Oil & Gas Corporation | Guymon, OK 73941 | Gas Operator | Feb 2026 |
| 27876 | T G & S Oil | Marietta, OK 73448 | Oil & Gas Operator | Feb 2026 |
| 27877 | T G T Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Jan 2026 |
| 27878 | T I Energy Services Inc | | Oil & Gas Operator | Dec 2003 |
| 27879 | T Investments Inc | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Mar 2011 |
| 27880 | T J D Oil Compan | | Oil Operator | Feb 1989 |
| 27881 | T JS Oil & Gas Inc | Fresno, OH 43824 | Oil & Gas Operator | Dec 2023 |
| 27882 | T K Resources LLC | Gillette, WY 82716 | Oil & Gas Operator | Mar 2026 |
| 27883 | T L C Oil Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2026 |
| 27884 | T M Hopkins Operating Co | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 27885 | T P Production Co | Denver, CO 80202 | Oil & Gas Operator | Nov 1996 |
| 27886 | T S B T Oil & Gas Properties | Moore, OK 73160-8126 | Oil & Gas Operator | Jan 2018 |
| 27887 | T T & T Inc | Shawnee, OK 74802-3694 | Oil & Gas Operator | Jan 1994 |
| 27888 | T W Clemons Operating Co., LLC | Minden, LA 71055 | Oil & Gas Operator | May 2026 |
| 27889 | T W Law LLC | Muskogee, OK 74403-6736 | Oil Operator | Jan 2026 |
| 27890 | T Willoughby, LLC | Ada, OK 74820 | Oil Operator | Feb 2026 |
| 27891 | T X P Inc Formerly Petrotech Inc | | Oil & Gas Operator | Jul 1992 |
| 27892 | T&R Energy Services | Pampa, TX 79065 | Oil & Gas Operator | May 2026 |
| 27893 | T&T Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2025 |
| 27894 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 27895 | T-5 Leasing, LLC | | Oil Operator | Dec 2013 |
| 27896 | T-Bar Exploration, Inc. | Sterling, KS 67579 | Oil Operator | Apr 1998 |
| 27897 | T-Bar-X Limited Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2005 |
| 27898 | T-Boc Inc. | | Oil & Gas Operator | Apr 2016 |
| 27899 | T-C Oil Company, LLC | Refugio, TX 78377 | Oil & Gas Operator | May 2026 |
| 27900 | T-D Oil Inc | Cement, OK 73017-0065 | Oil & Gas Operator | May 2020 |