| 1501 | Triad Hunter, LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 1502 | Triad O&G, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 1503 | Triad Oil & Gas Co Inc | | Oil & Gas Operator | Jun 1994 |
| 1504 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 1505 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 1506 | Triage Energy Corporation | Midland, TX 79708 | Oil & Gas Operator | Oct 2001 |
| 1507 | Triana Energy LLC | Charleston, WV 25301-2815 | Gas Operator | Nov 2018 |
| 1508 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 1509 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 1510 | Triangle Interprises Inc | Justin, TX 76247-0598 | Oil & Gas Operator | Jun 2015 |
| 1511 | Triangle J Oil Company | | Oil & Gas Operator | Mar 2007 |
| 1512 | Triangle Oil & G G Cornwell | | Oil & Gas Operator | Nov 1981 |
| 1513 | Triangle Oil Of Hosston | | Oil Operator | Jul 2014 |
| 1514 | Triangle Oil Producers Inc | | Oil & Gas Operator | Jun 1998 |
| 1515 | Triangle Operating Co., Inc. | | Gas Operator | Jan 2000 |
| 1516 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Dec 2025 |
| 1517 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2024 |
| 1518 | Triangle USA Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 2021 |
| 1519 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 1520 | Tribal Oil Company | | Oil & Gas Operator | Dec 1981 |
| 1521 | Tribar Resources LLC | | Oil & Gas Operator | Nov 2025 |
| 1522 | Tribune Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 1523 | Tricentrol Resources Inc | Englewood, CO 80111 | Oil & Gas Operator | Jun 1984 |
| 1524 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 1525 | Trichel Contracting Company | | Oil & Gas Operator | Sep 1987 |
| 1526 | Trickle Down Oil, Inc. | | Oil & Gas Operator | Feb 2016 |
| 1527 | Trico Energy Corporation | | Oil Operator | May 1984 |
| 1528 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 1529 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2025 |
| 1530 | Trico Oil Co., Inc. | | Gas Operator | Nov 1978 |
| 1531 | Trico/Tiger Development LLC | | Gas Operator | Dec 2017 |
| 1532 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Dec 2025 |
| 1533 | Trident Oil & Gas Corp. | | Oil & Gas Operator | Sep 2000 |
| 1534 | Tridon Oil Inc | Lafayette, LA 70505-2305 | Gas Operator | Dec 2013 |
| 1535 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 1536 | Triexco Inc | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2012 |
| 1537 | Triforce Energy LLC | Littleton, CO 80122 | Oil & Gas Operator | Dec 2025 |
| 1538 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 1539 | Trigg Drilling Company Inc | Oklahoma City, OK 73105 | Oil & Gas Operator | Jan 2013 |
| 1540 | Trigg Exploratio | | Gas Operator | Feb 1992 |
| 1541 | Trigg Oil Mining Corporation | | Oil & Gas Operator | Dec 2007 |
| 1542 | Trigger'S Disposal LLC | Sayre, OK 73662-2913 | Oil Operator | Sep 2022 |
| 1543 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 1544 | Trigon Exploration, Inc. | | Oil & Gas Operator | Jan 1999 |
| 1545 | Triken Oil & Gas | | Oil & Gas Operator | Feb 1995 |
| 1546 | Trilliant Energy Texas LTD | Tulsa, OK 74135-0767 | Oil & Gas Operator | Jun 2020 |
| 1547 | Trilogy Natural Resources LLC | Edmond, OK 73025 | Oil Operator | Oct 2025 |
| 1548 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 1549 | Trimble & Maclaskey Oil LLC | Gridley, KS 66852 | Oil Operator | Sep 2025 |
| 1550 | Trimble, Don G Dba Trimble Production Company | Houston, TX 77066 | Oil Operator | Jan 2025 |
| 1551 | Trimble, IVal L. | Gridley, KS 66852 | Oil Operator | Dec 2019 |
| 1552 | Trimont Energy LLC | Pittsburgh, PA 15211-1205 | Oil & Gas Operator | Dec 2016 |
| 1553 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 1554 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 1555 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 1556 | Trinidad Petroleum Corporation | | Oil & Gas Operator | Apr 1990 |
| 1557 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Dec 2025 |
| 1558 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 1559 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Dec 2025 |
| 1560 | Trinity Energy Corp | Gibsonia, PA 15044-9106 | Oil & Gas Operator | Dec 2007 |
| 1561 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 1562 | Trinity Exploration Co | | Oil Operator | Dec 1998 |
| 1563 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Dec 2025 |
| 1564 | Trinity Gas Storage, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Dec 2025 |
| 1565 | Trinity Group LLC | | Oil Operator | Dec 1997 |
| 1566 | Trinity Minerals&Operating Corp. | Abilene, TX 79605 | Oil & Gas Operator | Dec 1995 |
| 1567 | Trinity Oil & Gas Dev Inc | | Oil & Gas Operator | Jun 1994 |
| 1568 | Trinity Oil & Gas Inc | Pauls Valley, OK 73075 | Oil Operator | Oct 2025 |
| 1569 | Trinity Oil & Gas Producers LLC | Allen, OK 74825 | Oil & Gas Operator | Nov 2025 |
| 1570 | Trinity Operating & Prod., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1571 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 1572 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 1573 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 1574 | Trinity River Energy, LLC | Houston, TX 77094 | Oil & Gas Operator | Aug 2015 |
| 1575 | Trinity River Operating Company | Oklahoma City, OK 73147 | Oil & Gas Operator | Dec 2025 |
| 1576 | Trinity University & Closuit | Loco Hills, NM 88255 | Oil & Gas Operator | Dec 2002 |
| 1577 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 1578 | Trio Consulting & MGMT LLC | Wichita Falls, TX 76301 | Oil Operator | Oct 2025 |
| 1579 | Trio Oil And Gas Company | Salem, WV 26426 | Oil & Gas Operator | Nov 2021 |
| 1580 | Trio Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2004 |
| 1581 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 1582 | Trio Petroleum Corp. | Glenville, WV 26351-0880 | Oil & Gas Operator | Jul 2016 |
| 1583 | Trio Petroleum LLC | | Oil & Gas Operator | Oct 2025 |
| 1584 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 1585 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 1586 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 1587 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 1588 | Triple "S" Gas, Inc. | Louisville, KY 40255 | Oil & Gas Operator | Dec 2025 |
| 1589 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 1590 | Triple "S" Well Service, Inc. | Eureka, KS 67045 | Oil Operator | Sep 2025 |
| 1591 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 1592 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Dec 2025 |
| 1593 | Triple 'H' Oil O | | Oil Operator | Apr 1992 |
| 1594 | Triple - I, Inc. | Kansas City, MO 64114 | Gas Operator | Oct 2000 |
| 1595 | Triple 7 Energy Company Inc | Prague, OK 74864 | Oil Operator | Feb 1997 |
| 1596 | Triple B Crude, LLC | Colony, KS 66015 | Oil Operator | Sep 2025 |
| 1597 | Triple B Energy Inc | Gillette, WY 82716 | Oil Operator | Dec 1999 |
| 1598 | Triple B Energy LLC | Dorset, OH 44032 | Oil & Gas Operator | Dec 2024 |
| 1599 | Triple B Resources | Barnsdall, OK 74002-9759 | Oil & Gas Operator | May 2014 |
| 1600 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |