| 30501 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 30502 | Triangle Interprises Inc | Justin, TX 76247-0598 | Oil & Gas Operator | Jun 2015 |
| 30503 | Triangle J Oil Company | | Oil & Gas Operator | Mar 2007 |
| 30504 | Triangle Oil & G G Cornwell | | Oil & Gas Operator | Nov 1981 |
| 30505 | Triangle Oil Of Hosston | | Oil Operator | Jul 2014 |
| 30506 | Triangle Oil Producers, Inc. | | Oil & Gas Operator | Jun 1998 |
| 30507 | Triangle Operating Co., Inc. | | Gas Operator | Jan 2000 |
| 30508 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Apr 2025 |
| 30509 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2025 |
| 30510 | Triangle USA Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 2021 |
| 30511 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 30512 | Tribal Oil Company | | Oil & Gas Operator | Dec 1981 |
| 30513 | Tribar Resources LLC | | Oil Operator | Feb 2025 |
| 30514 | Tribune Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 30515 | Tricentrol Resources Inc | Englewood, CO 80111 | Oil & Gas Operator | Jun 1984 |
| 30516 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 30517 | Trichel Contracting Company | | Oil & Gas Operator | Sep 1987 |
| 30518 | Trickle Down Oil, Inc. | | Oil & Gas Operator | Feb 2016 |
| 30519 | Trico Energy Corporation | | Oil Operator | May 1984 |
| 30520 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 30521 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2025 |
| 30522 | Trico Oil Co., Inc. | | Gas Operator | Nov 1978 |
| 30523 | Trico/Tiger Development LLC | | Gas Operator | Dec 2017 |
| 30524 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Apr 2025 |
| 30525 | Trident Oil And Gas Corp. | | Oil & Gas Operator | Sep 2000 |
| 30526 | Tridon Oil Inc | Lafayette, LA 70505-2305 | Gas Operator | Dec 2013 |
| 30527 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 30528 | Triexco Inc | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2012 |
| 30529 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2025 |
| 30530 | Trigg Drilling Company Inc | Oklahoma City, OK 73105 | Oil & Gas Operator | Jan 2013 |
| 30531 | Trigg Exploratio | | Gas Operator | Feb 1992 |
| 30532 | Trigg Oil Mining Corporation | | Oil & Gas Operator | Dec 2007 |
| 30533 | Trigger'S Disposal LLC | Sayre, OK 73662-2913 | Oil Operator | Sep 2022 |
| 30534 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 30535 | Trigon Exploration, Inc. | | Oil & Gas Operator | Jan 1999 |
| 30536 | Triken Oil & Gas | | Oil & Gas Operator | Feb 1995 |
| 30537 | Trilliant Energy Texas LTD | Tulsa, OK 74135-0767 | Oil & Gas Operator | Jun 2020 |
| 30538 | Trilogy Natural Resources LLC | Edmond, OK 73025 | Oil Operator | Jan 2025 |
| 30539 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 30540 | Trimble & Maclaskey Oil LLC | Gridley, KS 66852 | Oil Operator | Dec 2024 |
| 30541 | Trimble, Don G Dba Trimble Production Company | Houston, TX 77066 | Oil Operator | Jan 2025 |
| 30542 | Trimble, IVal L. | Gridley, KS 66852 | Oil Operator | Dec 2019 |
| 30543 | Trimont Energy LLC | Pittsburgh, PA 15211-1205 | Oil & Gas Operator | Dec 2016 |
| 30544 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 30545 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 30546 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 30547 | Trinidad Petroleum Corporation | | Oil & Gas Operator | Apr 1990 |
| 30548 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Apr 2025 |
| 30549 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 30550 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Apr 2025 |
| 30551 | Trinity Energy Corp | Gibsonia, PA 15044-9106 | Oil & Gas Operator | Dec 2007 |
| 30552 | Trinity Energy Resources Inc | Houston, TX 77079 | Oil & Gas Operator | Aug 2005 |
| 30553 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 30554 | Trinity Exploration Co | | Oil Operator | Dec 1998 |
| 30555 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Apr 2025 |
| 30556 | Trinity Gas Storage, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Apr 2025 |
| 30557 | Trinity Group LLC | | Oil Operator | Dec 1997 |
| 30558 | Trinity Minerals&Operating Corp. | Abilene, TX 79605 | Oil & Gas Operator | Dec 1995 |
| 30559 | Trinity Oil & Gas Dev Inc | | Oil & Gas Operator | Jun 1994 |
| 30560 | Trinity Oil & Gas Inc | Pauls Valley, OK 73075 | Oil Operator | Jan 2025 |
| 30561 | Trinity Oil & Gas Producers LLC | Allen, OK 74825 | Oil & Gas Operator | Jan 2025 |
| 30562 | Trinity Operating & Prod., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30563 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 30564 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 30565 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 30566 | Trinity River Energy, LLC | Houston, TX 77094 | Oil & Gas Operator | Aug 2015 |
| 30567 | Trinity River Operating Company | Oklahoma City, OK 73147 | Oil & Gas Operator | Apr 2025 |
| 30568 | Trinity University & Closuit | Loco Hills, NM 88255 | Oil & Gas Operator | Dec 2002 |
| 30569 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 30570 | Trio Consulting & MGMT LLC | Wichita Falls, TX 76301 | Oil Operator | Jan 2025 |
| 30571 | Trio Oil And Gas Company | Salem, WV 26426 | Oil & Gas Operator | Nov 2021 |
| 30572 | Trio Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2004 |
| 30573 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 30574 | Trio Petroleum Corp. | Glenville, WV 26351-0880 | Oil & Gas Operator | Jul 2016 |
| 30575 | Trio Petroleum LLC | | Oil & Gas Operator | Dec 2024 |
| 30576 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 30577 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 30578 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 30579 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 30580 | Triple "S" Gas, Inc. | Dallas, TX 75355 | Oil & Gas Operator | Apr 2025 |
| 30581 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 30582 | Triple "S" Well Service, Inc. | Eureka, KS 67045 | Oil Operator | Sep 2024 |
| 30583 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 30584 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Apr 2025 |
| 30585 | Triple 'H' Oil O | | Oil Operator | Apr 1992 |
| 30586 | Triple - I, Inc. | Kansas City, MO 64114 | Gas Operator | Oct 2000 |
| 30587 | Triple 7 Energy Company Inc | Prague, OK 74864 | Oil Operator | Feb 1997 |
| 30588 | Triple B Crude, LLC | Colony, KS 66015 | Oil Operator | Nov 2024 |
| 30589 | Triple B Energy Inc | Gillette, WY 82716 | Oil Operator | Dec 1999 |
| 30590 | Triple B Energy LLC | Dorset, OH 44032 | Oil & Gas Operator | Dec 2023 |
| 30591 | Triple B Resources | Barnsdall, OK 74002-9759 | Oil & Gas Operator | May 2014 |
| 30592 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |
| 30593 | Triple C Petroleum LLC | Colony, KS 66015 | Oil Operator | Nov 2019 |
| 30594 | Triple C Properties Inc | Seminole, OK 74818 | Oil & Gas Operator | Feb 2025 |
| 30595 | Triple Crown Operating LLC | Tulsa, OK 74114 | Oil Operator | Dec 2024 |
| 30596 | Triple Crown Resources, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 30597 | Triple D Oil & Gas Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Apr 2025 |
| 30598 | Triple Diamond Energy Operating LLC | Dallas, TX 75254-8352 | Oil & Gas Operator | Jun 2014 |
| 30599 | Triple E Drillin | | Oil Operator | Jun 1992 |
| 30600 | Triple E Oil | Sterling, KS 67579 | Oil & Gas Operator | Mar 1999 |