| 28401 | Tenison Oil Comp | | Oil Operator | Jan 1993 |
| 28402 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 28403 | Tenk, Lawrence O. | Ottawa, KS 66067 | Oil & Gas Operator | Oct 1998 |
| 28404 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 28405 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 28406 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 28407 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2025 |
| 28408 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 28409 | Tenneco West, Inc. | | Oil & Gas Operator | Dec 1983 |
| 28410 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 28411 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2024 |
| 28412 | Tennessee Properties, Inc | | Oil Operator | Dec 2014 |
| 28413 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Dec 2025 |
| 28414 | Tenpas, Bruce | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 28415 | Tensas Delta Expl Co., LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 28416 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 28417 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 28418 | Tensas Exploraton & Production Co LLC | | Oil & Gas Operator | Nov 2009 |
| 28419 | Teocali Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 28420 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Jan 2026 |
| 28421 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 28422 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 28423 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 28424 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 28425 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 28426 | Ter Ex Inc | Butler, PA 16002-8638 | Gas Operator | Dec 1994 |
| 28427 | Terex Energy Corporation | Casper, WY 82602 | Oil & Gas Operator | Aug 2019 |
| 28428 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28429 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 28430 | Term Energy Corp. | Harrisville, WV 26362-0000 | Oil & Gas Operator | Dec 2021 |
| 28431 | Termo Company Of Texas | | Oil & Gas Operator | Dec 1986 |
| 28432 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 28433 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 28434 | Terra Exploration & Production Co. Inc. | | Oil & Gas Operator | Dec 2009 |
| 28435 | Terra Locus Services | Seguin, TX 78155 | Oil & Gas Operator | Jun 2000 |
| 28436 | Terra Max Energy | | Oil Operator | Mar 1986 |
| 28437 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 28438 | Terra Resc Incor | | Oil Operator | Mar 1986 |
| 28439 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
| 28440 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 28441 | Terrafina Energy, LLC | San Antonio, TX 78280 | Oil & Gas Operator | Apr 2026 |
| 28442 | Terral D Hinds | | Oil Operator | Mar 2012 |
| 28443 | Terrapet Corporation | | Oil & Gas Operator | Jun 2011 |
| 28444 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Jan 2026 |
| 28445 | Terraquest Corporation | Edmond, OK 73034 | Oil & Gas Operator | Jul 1997 |
| 28446 | Terrascan Drilling Corp | Dublin, OH 43017 | Oil Operator | Dec 2005 |
| 28447 | Terrel Production Co | | Oil & Gas Operator | Sep 2025 |
| 28448 | Terreland Corporation | Sunray, TX 79086 | Oil & Gas Operator | Oct 2004 |
| 28449 | Terrell Oil & Gas Production Co. | Hamlin, TX 79520 | Oil & Gas Operator | Apr 2026 |
| 28450 | Terrgin Oil & Gas LLC | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2021 |
| 28451 | Terrick Resources | Midland, TX 79708 | Oil & Gas Operator | Jul 2005 |
| 28452 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
| 28453 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Feb 2026 |
| 28454 | Terrol Energy In | | Oil Operator | Feb 1993 |
| 28455 | Terrol Energy Incorporated | Hygiene, CO 80533 | Oil & Gas Operator | Dec 2006 |
| 28456 | Terronne Petroleum Corporation | | Oil & Gas Operator | Nov 2024 |
| 28457 | Terry D Coan | Youngsville, PA 16371-3608 | Oil & Gas Operator | Dec 2021 |
| 28458 | Terry Development, Inc. | | Oil & Gas Operator | Aug 1992 |
| 28459 | Terry Enterprises, Inc. | West Columbia, TX 77486 | Oil & Gas Operator | Apr 2026 |
| 28460 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 28461 | Terry John Trust | Aurora, CO 80012-5112 | Oil & Gas Operator | May 2016 |
| 28462 | Terry Oil Company LLC | | Oil Operator | Dec 2024 |
| 28463 | Terry Petroleum Company | Houston, TX 77270 | Oil & Gas Operator | Dec 1997 |
| 28464 | Terry Production Co | Stroud, OK 74079-0475 | Oil & Gas Operator | Aug 2008 |
| 28465 | Terry Sims & Associates Inc. | | Oil Operator | Sep 2009 |
| 28466 | Terry'S Roustabout Service, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2002 |
| 28467 | Terry, Lewis D. | Olney, TX 76374 | Oil & Gas Operator | Sep 1995 |
| 28468 | Terry, R. K. | West Columbia, TX 77486 | Oil & Gas Operator | Apr 2026 |
| 28469 | Tervita, LLC | | Oil Operator | May 2021 |
| 28470 | Terzan Energy II LLC | Chandler, OK 74834 | Oil & Gas Operator | Jan 2026 |
| 28471 | Tesla Resources, Inc. | | Oil & Gas Operator | Aug 1996 |
| 28472 | Tesoro E&P Company, L.P. | San Antonio, TX 78216 | Oil & Gas Operator | Jan 2000 |
| 28473 | Tesoro Expl. & Prod. Company | San Antonio, TX 78216 | Gas Operator | Sep 2010 |
| 28474 | Tesoro Petroleum | | Oil Operator | Mar 1982 |
| 28475 | Tesoro Petroleum Corporation | | Oil & Gas Operator | May 1982 |
| 28476 | Tess Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 28477 | Tessara Petroleum Resources, LLC | Houston, TX 77086 | Oil & Gas Operator | Apr 2020 |
| 28478 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2025 |
| 28479 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 28480 | Tesuque Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | Apr 2026 |
| 28481 | Tet Energy | | Oil Operator | Nov 2025 |
| 28482 | Teton Energy Co Inc | Denver, CO 80239 | Oil Operator | Dec 1983 |
| 28483 | Teton Petroleum Corporation | Kerrville, TX 78028 | Oil & Gas Operator | Apr 2026 |
| 28484 | Tetra Oil Company | | Oil & Gas Operator | Dec 2025 |
| 28485 | Tetragon Investments, LLC | Abilene, TX 79604 | Oil Operator | Jul 2014 |
| 28486 | Tettleton, Jon Otis | Nocona, TX 76255 | Oil & Gas Operator | Aug 2003 |
| 28487 | Tettleton, Steven B. | Nocona, TX 76255 | Oil Operator | Apr 2026 |
| 28488 | Tevebaugh MGMT Co | Baden, PA 15005-0123 | Oil & Gas Operator | Dec 2002 |
| 28489 | Tex-Am Petroleum Corp. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2026 |
| 28490 | Tex-Am-Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 28491 | Tex-Ann Oil & Gas Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 2026 |
| 28492 | Tex-Atic Resources, Inc. | S. Lake Tahoe, CA 96150 | Oil & Gas Operator | Apr 2026 |
| 28493 | Tex-Con-Brehm-Basin Expl. | | Oil & Gas Operator | May 1990 |
| 28494 | Tex-Hio Energy | Terrell, TX 75156 | Oil & Gas Operator | Dec 1997 |
| 28495 | Tex-Lee Operating Company | Giddings, TX 78942 | Oil & Gas Operator | Apr 2026 |
| 28496 | Tex-Oak, Inc. | Oklahoma City, OK 73155 | Oil & Gas Operator | Dec 1995 |
| 28497 | Tex-Ok Energy, Limited Partnership | Cody, WY 82414 | Oil & Gas Operator | Jan 2026 |
| 28498 | Tex-Ok Energy, LTD Partnership | Cody, WY 82414 | Oil & Gas Operator | Apr 2026 |
| 28499 | Tex-R Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2021 |
| 28500 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |