| 27701 | T & T Contracting Dba Hulman Contracting, LLC | Rockfield, KY 42274 | Oil & Gas Operator | Dec 2022 |
| 27702 | T & T Oil Co. | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2002 |
| 27703 | T & T Production Co. | Victoria, TX 77902 | Oil & Gas Operator | Feb 1995 |
| 27704 | T & W Ward Oil LLC | Blackwell, OK 74631 | Oil Operator | Jan 2024 |
| 27705 | T - C Oil Company | Refugio, TX 78377 | Oil & Gas Operator | Jan 2012 |
| 27706 | T And DS Lube Doctors LLC | Carlsbad, NM 88220 | Gas Operator | Jan 2024 |
| 27707 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Dec 2023 |
| 27708 | T B C Inc | Coweta, OK 74429 | Oil & Gas Operator | Apr 2020 |
| 27709 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 27710 | T B K Energy Company | | Oil & Gas Operator | Jan 2024 |
| 27711 | T Bar M Energy Resources LLC | | Oil & Gas Operator | Dec 2023 |
| 27712 | T C Craighead & Company LLC | Ardmore, OK 73402-0576 | Oil & Gas Operator | Aug 2019 |
| 27713 | T C M LLC | | Gas Operator | Jun 2009 |
| 27714 | T C Production | | Oil Operator | May 1994 |
| 27715 | T D Energy Company Inc | Broken Arrow, OK 74011-3953 | Oil & Gas Operator | Feb 2015 |
| 27716 | T Dozer D Oil Co. | Goree, TX 76363 | Oil & Gas Operator | Apr 2024 |
| 27717 | T E F Inc | Madill, OK 73446-6656 | Oil & Gas Operator | Jul 2023 |
| 27718 | T E L Oil & Gas Corporation | Guymon, OK 73942-0714 | Gas Operator | Dec 2023 |
| 27719 | T G & S Oil | Marietta, OK 73448-0346 | Oil & Gas Operator | Jan 2024 |
| 27720 | T I Energy Services Inc | | Oil & Gas Operator | Dec 2003 |
| 27721 | T Investments Inc | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Mar 2011 |
| 27722 | T J D Oil Compan | | Oil Operator | Feb 1989 |
| 27723 | T JS Oil & Gas Inc | Fresno, OH 43824 | Oil & Gas Operator | Dec 2021 |
| 27724 | T L C Oil Inc | Seminole, OK 74868 | Oil & Gas Operator | Dec 2023 |
| 27725 | T M Hopkins Operating Co | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 27726 | T P Operating LLC | | Oil & Gas Operator | Nov 1999 |
| 27727 | T P Production Co | Denver, CO 80202 | Oil & Gas Operator | Nov 1996 |
| 27728 | T S B T Oil & Gas Properties | Moore, OK 73160-8126 | Oil & Gas Operator | Jan 2018 |
| 27729 | T T & T Inc | Shawnee, OK 74802-3694 | Oil & Gas Operator | Jan 1994 |
| 27730 | T W Clemons Operating Co., LLC | Minden, LA 71055 | Oil & Gas Operator | Apr 2024 |
| 27731 | T X P Inc Formerly Petrotech Inc | | Oil & Gas Operator | Jul 1992 |
| 27732 | T&T Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 27733 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 27734 | T-5 Leasing, LLC | | Oil Operator | Dec 2013 |
| 27735 | T-Bar Exploration, Inc. | Sterling, KS 67579 | Oil Operator | Apr 1998 |
| 27736 | T-Bar-X Limited Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2005 |
| 27737 | T-Boc Inc. | | Oil & Gas Operator | Apr 2016 |
| 27738 | T-C Oil Company, LLC | Refugio, TX 78377 | Oil & Gas Operator | Apr 2024 |
| 27739 | T-D Oil Inc | Cement, OK 73017-0065 | Oil & Gas Operator | May 2020 |
| 27740 | T-K Exploration Company | Oklahoma City, OK 73102-7029 | Oil & Gas Operator | Mar 2015 |
| 27741 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 27742 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Dec 2023 |
| 27743 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2024 |
| 27744 | T-Rex Oil Inc | Broomfield, CO 80021 | Oil Operator | Feb 2011 |
| 27745 | T-Square Petroleum Co. | Rising Star, TX 76471 | Oil & Gas Operator | Apr 2024 |
| 27746 | T-Y Development Corp | Perryton, TX 79070 | Oil & Gas Operator | Apr 2024 |
| 27747 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | Apr 2024 |
| 27748 | T. C. Morrow Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 27749 | T. D. Tedder | | Oil Operator | Dec 1991 |
| 27750 | T. E. Adams Petroleum Corp. | | Oil & Gas Operator | Dec 2023 |
| 27751 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 27752 | T. J. Lundy | | Oil Operator | Jan 2024 |
| 27753 | T. J. Oil And Gas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 27754 | T. J. Operating Co., Inc. | | Oil & Gas Operator | Aug 1998 |
| 27755 | T. K. Stanley, Inc. | | Oil & Gas Operator | Jul 1982 |
| 27756 | T. L. J. Incorporated | Big Lake, TX 76932 | Oil & Gas Operator | Dec 1998 |
| 27757 | T. L. James & Co., Inc. | | Oil & Gas Operator | Oct 1992 |
| 27758 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 27759 | T. N. T. Energy Co. | | Oil Operator | May 1991 |
| 27760 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Feb 2024 |
| 27761 | T. R. Production, Inc. | Pilot Point, TX 76258 | Oil & Gas Operator | Jul 2021 |
| 27762 | T. W. Drilling Co. | Abilene, TX 79601 | Oil & Gas Operator | Aug 2002 |
| 27763 | T. W. McGuire & Associates, Inc. | | Oil & Gas Operator | Nov 2018 |
| 27764 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 27765 | T.B. Lanford Et Al | | Oil Operator | Apr 1987 |
| 27766 | T.C.G. Oil Co. | Iola, KS 66749 | Oil Operator | Sep 2009 |
| 27767 | T.C.G. Oil Co., A General Partnership | Laharpe, KS 66755 | Oil Operator | Aug 2009 |
| 27768 | T.D. Operating Company, Inc. | New Braunfels, TX 78130 | Oil & Gas Operator | Nov 1999 |
| 27769 | T.F. Well Service, L.L.C. | Iowa Park, TX 76367 | Oil Operator | Apr 2024 |
| 27770 | T.G.B., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 27771 | T.J. Oil | | Oil Operator | Nov 2023 |
| 27772 | T.L.S. Oil Co. | Hawley, TX 79525 | Oil & Gas Operator | Apr 2024 |
| 27773 | T.M. Quaintance Crude Oil Production | Scio, NY 14880 | Oil Operator | Dec 2021 |
| 27774 | T.O. Greer Productions | | Oil & Gas Operator | Aug 2013 |
| 27775 | T.O.F., Inc. | | Oil & Gas Operator | Dec 2002 |
| 27776 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 27777 | T.W.O. (Taylor Well Operating) | Missoula, MT 59803 | Oil & Gas Operator | Jan 2024 |
| 27778 | Tab Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 27779 | Tabbs Bay Production Company | Houston, TX 77019 | Oil Operator | Apr 2024 |
| 27780 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 27781 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |
| 27782 | Taber Oil Co | | Oil Operator | Sep 2018 |
| 27783 | Taber, Alan R. | La Vernia, TX 78121 | Oil Operator | Apr 2024 |
| 27784 | Taber, Grover E. Jr. | Cocoa, FL 32926 | Gas Operator | Dec 2022 |
| 27785 | Tabor Creek Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 27786 | Tabor, Danny | Scottsville, KY 42164 | Oil Operator | Dec 2022 |
| 27787 | Tabula Rasa Energy, LLC | Allen, TX 75013 | Oil & Gas Operator | Dec 2020 |
| 27788 | Tacitus, LLC | Farmington, NM 87401 | Oil & Gas Operator | Feb 2024 |
| 27789 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 27790 | Tackett & Sons DRLG Contractors, Inc | Salyersville, , K 41465 | Oil & Gas Operator | Dec 2022 |
| 27791 | Tacor Resources Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 27792 | Tactical Oil & Gas, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2024 |
| 27793 | Tactical Operating Company, LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 27794 | Tadlock Properites | | Oil & Gas Operator | Jan 1994 |
| 27795 | Taft Investment Co., Inc. | Taft, TX 78390 | Oil Operator | Apr 2024 |
| 27796 | Taft Oil And Gas LLC | Bonham, TX 75418 | Oil & Gas Operator | Dec 2018 |
| 27797 | Tag Enterprises Inc | Shelocta, PA 15774-0310 | Gas Operator | Dec 2016 |
| 27798 | Tag Oil Co LLC | | Oil & Gas Operator | Jan 2024 |
| 27799 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Apr 2024 |
| 27800 | Tag Petroleum Inc | Stillwater, OK 74076-1389 | Oil & Gas Operator | Jan 2021 |