| 28401 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 28402 | Teichgraeber Oil Co. | | Oil Operator | Dec 1994 |
| 28403 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 28404 | Tej Ventures | | Oil & Gas Operator | Dec 2002 |
| 28405 | Tejas Gas Pipeline Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1998 |
| 28406 | Tejas Gas Pipeline, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2002 |
| 28407 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2026 |
| 28408 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 28409 | Tejas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 28410 | Tejas Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 28411 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 28412 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 28413 | Tejas Trucking, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Sep 2026 |
| 28414 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 28415 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2026 |
| 28416 | Teke Production LLC | Houston, TX 77269 | Oil Operator | Sep 2026 |
| 28417 | Tekenergy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 28418 | Tekna Synergy Corporation | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 28419 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 28420 | Teleo Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2009 |
| 28421 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2026 |
| 28422 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 28423 | Tellurian Operating LLC | | Oil & Gas Operator | Jun 2024 |
| 28424 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 28425 | Tellus Operating Group, LLC | | Oil & Gas Operator | Jun 2026 |
| 28426 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Sep 2026 |
| 28427 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 28428 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 28429 | Temagami Oil & Gas LTD | | Oil & Gas Operator | May 2007 |
| 28430 | Tember Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2026 |
| 28431 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Dec 2025 |
| 28432 | Temescal Resources LLC | | Oil & Gas Operator | Jul 2026 |
| 28433 | Temex Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 28434 | Tempest Energy Resources, LP | Houston, TX 77251 | Oil & Gas Operator | Jun 2013 |
| 28435 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 28436 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2026 |
| 28437 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2025 |
| 28438 | Temple Oil Co | | Oil & Gas Operator | Oct 1992 |
| 28439 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 28440 | Templeton Oil, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 28441 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 28442 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 28443 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 28444 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 28445 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 28446 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 28447 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 28448 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 28449 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 28450 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |
| 28451 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | May 2026 |
| 28452 | Tenison Oil Comp | | Oil Operator | Jan 1993 |
| 28453 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Jun 2026 |
| 28454 | Tenk, Lawrence O. | Ottawa, KS 66067 | Oil & Gas Operator | Oct 1998 |
| 28455 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 28456 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 28457 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 28458 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2025 |
| 28459 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 28460 | Tenneco West, Inc. | | Oil & Gas Operator | Dec 1983 |
| 28461 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 28462 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2024 |
| 28463 | Tennessee Properties, Inc | | Oil Operator | Dec 2014 |
| 28464 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Jun 2026 |
| 28465 | Tenpas, Bruce | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 28466 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 28467 | Tensas Delta Exploration Company, LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 28468 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 28469 | Tensas Exploraton & Production Co LLC | | Oil & Gas Operator | Nov 2009 |
| 28470 | Teocali Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2026 |
| 28471 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Jul 2026 |
| 28472 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 28473 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 28474 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 28475 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 28476 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 28477 | Tepui Ventures | | Gas Operator | May 2026 |
| 28478 | Ter Ex Inc | Butler, PA 16002-8638 | Gas Operator | Dec 1994 |
| 28479 | Terex Energy Corporation | Casper, WY 82602 | Oil & Gas Operator | Aug 2019 |
| 28480 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28481 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 28482 | Term Energy Corp. | Harrisville, WV 263620000 | Oil & Gas Operator | Dec 2021 |
| 28483 | Termo Company Of Texas | | Oil & Gas Operator | Dec 1986 |
| 28484 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 28485 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 28486 | Terra Energy LTD And Miller Energy Inc And Mille | | Gas Operator | Dec 1998 |
| 28487 | Terra Exploration & Production Co. Inc. | | Oil & Gas Operator | Dec 2009 |
| 28488 | Terra Locus Services | Seguin, TX 78155 | Oil & Gas Operator | Jun 2000 |
| 28489 | Terra Max Energy | | Oil Operator | Mar 1986 |
| 28490 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 28491 | Terra Resc Incor | | Oil Operator | Mar 1986 |
| 28492 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
| 28493 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 28494 | Terrafina Energy, LLC | San Antonio, TX 78280 | Oil & Gas Operator | Sep 2026 |
| 28495 | Terral D Hinds | | Oil Operator | Mar 2012 |
| 28496 | Terrapet Corporation | | Oil & Gas Operator | Jun 2011 |
| 28497 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Jul 2026 |
| 28498 | Terraquest Corporation | Edmond, OK 73034 | Oil & Gas Operator | Jul 1997 |
| 28499 | Terrascan Drilling Corp | Dublin, OH 43017 | Oil Operator | Dec 2005 |
| 28500 | Terrel Production Co | | Oil & Gas Operator | Jul 2026 |