| 1501 | Howdyshell Pumping Inc | Logan, OH 43138 | Oil Operator | Dec 2024 |
| 1502 | Howe, Thomas L. | Hunt, NY 14846 | Gas Operator | Dec 2024 |
| 1503 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 1504 | Howell Bill J | Calvin, OK 74531-0248 | Oil & Gas Operator | Sep 2016 |
| 1505 | Howell C W | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2015 |
| 1506 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Feb 2026 |
| 1507 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 1508 | Howell Jason | Wynona, OK 74084 | Oil Operator | Nov 2025 |
| 1509 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 1510 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 1511 | Howell Oil Company | Hutchinson, KS 67504 | Oil & Gas Operator | Sep 2025 |
| 1512 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 1513 | Howell'S Well Service, Inc. | | Oil & Gas Operator | Nov 2025 |
| 1514 | Howell, Betty L. | Lakewood, NY 14750 | Gas Operator | Dec 2024 |
| 1515 | Howell, Ray | Breckenridge, TX 76424 | Oil & Gas Operator | May 1998 |
| 1516 | Howell, VIrginia C. Estate Of | Breckenridge, TX 76424 | Gas Operator | Dec 2024 |
| 1517 | Howells Oil & Gas | Graysville, OH 45734 | Oil & Gas Operator | Dec 2024 |
| 1518 | Howitzer Operating, LLC | Dallas, TX 75380 | Oil Operator | Feb 2026 |
| 1519 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 1520 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 1521 | Howles, William A | Savona, NY 14879 | Gas Operator | Dec 2024 |
| 1522 | Hoy Production LLC | | Gas Operator | Nov 2025 |
| 1523 | Hoyt Energy L.L.C. | | Oil Operator | Dec 2025 |
| 1524 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 1525 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Nov 2025 |
| 1526 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 1527 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 1528 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 1529 | Hpoc, LLC | Cuba, NM 87013 | Oil Operator | Mar 2025 |
| 1530 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 1531 | HR Energy LLC | Shelby, MT 59474 | Oil & Gas Operator | Dec 2025 |
| 1532 | HR McClure | Scottdale, PA 15683-1533 | Gas Operator | Dec 2018 |
| 1533 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 1534 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 1535 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 1536 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 1537 | Hrbek, R. L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |
| 1538 | HRC Inc | Hobbs, NM 88241 | Gas Operator | Jun 2017 |
| 1539 | HRC Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2017 |
| 1540 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Nov 2025 |
| 1541 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Feb 2026 |
| 1542 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 1543 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 1544 | HRL Oilfields In | | Oil Operator | Jun 1998 |
| 1545 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 1546 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
| 1547 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 1548 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 1549 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 1550 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 1551 | HS Resources | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1997 |
| 1552 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2002 |
| 1553 | Hsumy Oil & Gas, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 1554 | HTC Gas Company, LLC | Hindman, KY 41822 | Gas Operator | Dec 2023 |
| 1555 | HTR Operating Co., Inc. | Hurst, TX 76053 | Oil & Gas Operator | Feb 2026 |
| 1556 | Hub Oil Company | | Oil Operator | Jan 1990 |
| 1557 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 1558 | Hub-Hill Inc | San Antonio, TX 78230 | Oil Operator | Nov 1998 |
| 1559 | Hubbard Creek Coal Gas LLC | | Gas Operator | Dec 2025 |
| 1560 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | Feb 2026 |
| 1561 | Hubbs III, LLC | | Oil & Gas Operator | Mar 2024 |
| 1562 | Hubcap Oil, LLC | Boerne, TX 78015 | Oil Operator | Feb 2026 |
| 1563 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 1564 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 1565 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 1566 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Feb 2026 |
| 1567 | Huber J M Corpor | | Oil & Gas Operator | Dec 1996 |
| 1568 | Huber Oil Company, A General Partnership | Madison, KS 66860 | Oil & Gas Operator | Feb 2025 |
| 1569 | Hubl/Harbin | | Oil Operator | Dec 1994 |
| 1570 | Hubler John | Tulsa, OK 74133-2716 | Oil & Gas Operator | Mar 2015 |
| 1571 | Huck Farms LLC | Stratford, OK 74872 | Oil & Gas Operator | Dec 2025 |
| 1572 | Huck Thomas | Marietta, OH 45750 | Gas Operator | Dec 2000 |
| 1573 | Huddleston Oil And Gas Company | Millsap, TX 76066 | Gas Operator | Dec 2002 |
| 1574 | Hudgens Lester E | Bartlesville, OK 74006-0215 | Oil Operator | Mar 2015 |
| 1575 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 1576 | Hudson Brothers Mining Co., Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 1994 |
| 1577 | Hudson Brothers, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Jun 2007 |
| 1578 | Hudson Energy LLC | | Oil Operator | Oct 2025 |
| 1579 | Hudson Group LLC | Casper, WY 82601 | Oil & Gas Operator | Jul 2025 |
| 1580 | Hudson Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 1581 | Hudson, Comer Oil & Gas | Cisco, TX 76437 | Oil & Gas Operator | Jan 2003 |
| 1582 | Huey Dean | | Oil Operator | Oct 2000 |
| 1583 | Hueysville Gas Co | Eastern, KY 41622 | Gas Operator | Dec 2014 |
| 1584 | Hufco, Incorporated | | Oil & Gas Operator | Dec 2020 |
| 1585 | Huff Minerals, LTD. | Amarillo, TX 79101 | Gas Operator | Feb 2026 |
| 1586 | Huff, Jack | Midland, TX 79710 | Oil & Gas Operator | Dec 2004 |
| 1587 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
| 1588 | Huffman Arthur | Waynesburg, PA 15370-1437 | Gas Operator | Dec 2025 |
| 1589 | Huffman, H. L., LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Sep 1994 |
| 1590 | Huffman-Bowers Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2024 |
| 1591 | Hufo Production Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2002 |
| 1592 | Huggs & McConathy,Et Al | | Oil & Gas Operator | Dec 1985 |
| 1593 | Huggs Inc & John Franks, Et Al | | Oil & Gas Operator | Dec 1992 |
| 1594 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 1595 | Huggs Inc. & Bec, Et Al | | Oil & Gas Operator | Feb 1998 |
| 1596 | Huggs Incorporated, Et Al | | Oil & Gas Operator | Feb 1998 |
| 1597 | Hugh A. Hawthorne, Et Al | | Oil & Gas Operator | Dec 1978 |
| 1598 | Hughes & Hughes | | Oil & Gas Operator | May 1984 |
| 1599 | Hughes & New Oil Co. | | Oil Operator | Jul 1993 |
| 1600 | Hughes & New-D. Braswell | | Oil & Gas Operator | Jun 1983 |