| 1 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 2 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2026 |
| 3 | T & D Oil LLC (Osage Only) | | Oil & Gas Operator | Dec 2025 |
| 4 | T & G Holding LLC | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Mar 2015 |
| 5 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Dec 2025 |
| 6 | T & J Operating | Ada, OK 74821-1547 | Oil Operator | Feb 2012 |
| 7 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 8 | T & M Oil & Royalty | Ada, OK 74820 | Oil & Gas Operator | Dec 2025 |
| 9 | T & M Oil Company | Midlothian, TX 76065 | Oil & Gas Operator | Mar 2026 |
| 10 | T & O Gas Co | | Oil Operator | May 2001 |
| 11 | T & P Exploration | Addison, TX 75006 | Oil & Gas Operator | Aug 1993 |
| 12 | T & W Ward Oil LLC | Blackwell, OK 74631 | Oil Operator | Dec 2025 |
| 13 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Dec 2025 |
| 14 | T And S Exploration LLC | | Oil Operator | Dec 2025 |
| 15 | T B C Inc | Coweta, OK 74429 | Oil & Gas Operator | Apr 2020 |
| 16 | T B K Energy Company | Brenham, TX 77833 | Oil & Gas Operator | Dec 2025 |
| 17 | T Bar M Energy Resources LLC | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2025 |
| 18 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 19 | T D Cox Oil Corporation | | Oil & Gas Operator | Dec 2025 |
| 20 | T D Energy Company Inc | Broken Arrow, OK 74011-3953 | Oil & Gas Operator | Feb 2015 |
| 21 | T E F Inc | Madill, OK 73446-6656 | Oil & Gas Operator | Jul 2023 |
| 22 | T E L Oil & Gas Corporation | Guymon, OK 73941 | Gas Operator | Dec 2025 |
| 23 | T G & S Oil | Marietta, OK 73448 | Oil & Gas Operator | Dec 2025 |
| 24 | T G T Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Sep 2025 |
| 25 | T Investments Inc | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Mar 2011 |
| 26 | T L C Oil Inc | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 27 | T S B T Oil & Gas Properties | Moore, OK 73160-8126 | Oil & Gas Operator | Jan 2018 |
| 28 | T T & T Inc | Shawnee, OK 74802-3694 | Oil & Gas Operator | Jan 1994 |
| 29 | T W Law LLC | Muskogee, OK 74403-6736 | Oil Operator | Dec 2025 |
| 30 | T Willoughby, LLC | Ada, OK 74820 | Oil Operator | Dec 2025 |
| 31 | T-D Oil Inc | Cement, OK 73017-0065 | Oil & Gas Operator | May 2020 |
| 32 | T-K Exploration Company | Oklahoma City, OK 73102-7029 | Oil & Gas Operator | Mar 2015 |
| 33 | T-Y Development Corp | Perryton, TX 79070 | Oil & Gas Operator | Mar 2026 |
| 34 | T.C. Harris Pumping LLC | Hennessey, OK 73742 | Gas Operator | Dec 2025 |
| 35 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Mar 2026 |
| 36 | Taber Oil Co | | Oil Operator | Sep 2018 |
| 37 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 38 | Tag Oil Co LLC | Ringling, OK 73456 | Oil & Gas Operator | Nov 2025 |
| 39 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Mar 2026 |
| 40 | Tag Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2021 |
| 41 | Tag Team Resources LLC | Eufaula, OK 74432 | Oil & Gas Operator | Dec 2025 |
| 42 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 43 | Talbert, Eugene Operating Co,Inc | Tyler, TX 75702 | Oil & Gas Operator | Dec 1997 |
| 44 | Tallgrass Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2026 |
| 45 | Tallgrass Petroleum Corporation | | Oil & Gas Operator | Feb 2012 |
| 46 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 47 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2026 |
| 48 | Tamworth Resources LLC | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 49 | Tandem Oil Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 1998 |
| 50 | Tank Truck'S Inc | Sapulpa, OK 74066 | Oil Operator | Feb 2026 |
| 51 | Tap Petroleum Inc | Cleveland, OK 74020-0054 | Oil & Gas Operator | Apr 2020 |
| 52 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 53 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2026 |
| 54 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 55 | Tarka Energy LLC | Houston, TX 77056-1940 | Oil & Gas Operator | Mar 2022 |
| 56 | Tarrant Tracy Dba Trace Oil | Crescent, OK 73028 | Oil & Gas Operator | Feb 2021 |
| 57 | Tarwater Oil & Gas LLC | San Jose, CA 95128-4219 | Oil & Gas Operator | Dec 2023 |
| 58 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 59 | Tate Exploration | Lakin, KS 67860 | Oil & Gas Operator | Sep 1994 |
| 60 | Tau Ventures | Tulsa, OK 74105-1026 | Oil & Gas Operator | Dec 2025 |
| 61 | Taubert & Steed | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2001 |
| 62 | Taurus Minerals Inc /Osage Only | | Oil Operator | Aug 2013 |
| 63 | Taurus Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2026 |
| 64 | Taylor Cliff | | Oil & Gas Operator | Nov 2025 |
| 65 | Taylor Energy Corporation | Amarillo, TX 79114 | Oil & Gas Operator | Feb 1999 |
| 66 | Taylor International Inc | Drumright, OK 74030-1173 | Oil & Gas Operator | Mar 2020 |
| 67 | Taylor James A | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 68 | Taylor Oil Company | Edmond, OK 73034 | Oil & Gas Operator | Sep 2025 |
| 69 | Taylor Petroleum LLC | Crescent, OK 73028-0340 | Oil & Gas Operator | Dec 2016 |
| 70 | Taylor Production Company | Collinsville, OK 74021 | Oil Operator | Nov 1998 |
| 71 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 72 | Taylor R Clark Exploration Inc | | Oil & Gas Operator | Aug 1992 |
| 73 | TBD Acquistions LLC | Duncan, OK 73533 | Oil Operator | Dec 2025 |
| 74 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 75 | TC Energy LLC | Covington, OK 73730-2116 | Oil & Gas Operator | Sep 2014 |
| 76 | TC Oil LLC | Duncan, OK 73533 | Oil Operator | Dec 2025 |
| 77 | TC3 Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Jul 1996 |
| 78 | Tcina Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2023 |
| 79 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 80 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | Jan 2026 |
| 81 | Te-Ray Energy Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Dec 2025 |
| 82 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2026 |
| 83 | Teafatiller Limuel & Rita | Marietta, OK 73448-0321 | Oil & Gas Operator | Feb 2002 |
| 84 | Teale F William | Tulsa, OK 74136-1017 | Oil & Gas Operator | Jun 2000 |
| 85 | Tec Resources LLC | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 86 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Dec 2025 |
| 87 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 88 | Tee Cee'S Inc | Drumright, OK 74030 | Oil & Gas Operator | Jan 2026 |
| 89 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 90 | Tekenergy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 91 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Mar 2026 |
| 92 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 93 | Temex Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 94 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2025 |
| 95 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 96 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 97 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2025 |
| 98 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Dec 2025 |
| 99 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Jan 2026 |
| 100 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |