| 13501 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 13502 | HKW Oil Company, Inc. | Bunker Hill, KS 67626 | Oil Operator | Dec 2009 |
| 13503 | HLH Drilling Inc | Andover, OH 44003 | Oil & Gas Operator | Dec 1985 |
| 13504 | HLH Realty Co | Drumright, OK 74030 | Oil & Gas Operator | Mar 2016 |
| 13505 | HMD Oil Co Inc | Ardmore, OK 73401-2542 | Oil & Gas Operator | Nov 2025 |
| 13506 | HMH Operators, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 13507 | HMN Partnership | Argonia, KS 67004 | Oil Operator | Nov 1993 |
| 13508 | HMT Genesis Petroleum Corp. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2008 |
| 13509 | HMT Pipeline Company, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Feb 2026 |
| 13510 | HMX Investments, Inc. | Katy, TX 77494 | Oil & Gas Operator | Oct 2025 |
| 13511 | HNG Oil Company | | Oil & Gas Operator | Jun 1987 |
| 13512 | HNG Storage Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2002 |
| 13513 | Hoag Memorial Hospital Presbyterian | | Gas Operator | Nov 2025 |
| 13514 | Hoard John L Family Trust | Ardmore, OK 73402-1706 | Oil & Gas Operator | Jun 2022 |
| 13515 | Hobbs Energy Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 13516 | Hobbs Oil Co. | | Oil Operator | Dec 1999 |
| 13517 | Hobbs Production LLC | | Oil Operator | Mar 2023 |
| 13518 | Hobbs, Columbus Agent | | Oil & Gas Operator | Dec 2018 |
| 13519 | Hobbs, Donald M. | Edinboro, PA 16412 | Gas Operator | Dec 2024 |
| 13520 | Hobo Oil & Gas | | Oil & Gas Operator | Aug 2013 |
| 13521 | Hobson Petroleum Corp | | Oil & Gas Operator | Sep 1991 |
| 13522 | Hoc Ca LLC | | Oil & Gas Operator | Dec 2025 |
| 13523 | Hoc Operating Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 1999 |
| 13524 | Hochendel Consultants | | Oil & Gas Operator | Jul 1995 |
| 13525 | Hocking Hills Energy And Well Service LLC | Logan, OH 43138-8497 | Oil & Gas Operator | Dec 2024 |
| 13526 | Hocking Technical College | Nelsonville, OH 45764 | Oil & Gas Operator | Dec 2024 |
| 13527 | Hockran, Thomas A. | Bemus Point, NY 14712 | Gas Operator | Dec 2024 |
| 13528 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 13529 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Nov 2025 |
| 13530 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 13531 | Hodge T F | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 13532 | Hodge, T.F. & Morrow Oil & Gas Co. | | Oil & Gas Operator | Sep 1993 |
| 13533 | Hodges & Hodges Oil Venture | Gallup, NM 87301 | Oil Operator | May 1999 |
| 13534 | Hodges & Hodges Productions | Anson, TX 79501 | Oil & Gas Operator | Aug 2003 |
| 13535 | Hodges & Rister | Abilene, TX 79603 | Oil & Gas Operator | Apr 2016 |
| 13536 | Hodges Oil | | Oil Operator | Sep 2025 |
| 13537 | Hodges, Dennis D. And Peggy D. | Reading, KS 66868 | Oil Operator | Sep 2025 |
| 13538 | Hodges, James Aaron | Fort Worth, TX 76179 | Oil & Gas Operator | Feb 2026 |
| 13539 | Hodges, Thomas | Alvord, TX 76225 | Oil & Gas Operator | Oct 2002 |
| 13540 | Hodges, Tommie Ann | Alvord, TX 76225 | Oil & Gas Operator | Jun 2018 |
| 13541 | Hoefle Oil Company | | Gas Operator | Dec 2011 |
| 13542 | Hoehn French | Enid, OK 73701-5600 | Oil & Gas Operator | Oct 1996 |
| 13543 | Hoehn Oil | Wellsville, KS 66092 | Oil Operator | Oct 1998 |
| 13544 | Hoehn Oil LLC | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 13545 | Hoell Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 13546 | Hoelscher, Weldon | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 13547 | Hoener Ross Inco | | Oil Operator | Dec 1991 |
| 13548 | Hoener, Ross | Iuka, KS 67066 | Oil & Gas Operator | Jul 2025 |
| 13549 | Hoepker, Larry | Humboldt, KS 66748 | Oil Operator | Dec 2024 |
| 13550 | Hoermann, S. E. | Seguin, TX 78155 | Oil & Gas Operator | Feb 2026 |
| 13551 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 13552 | Hoff Elmer & Mildred | | Oil & Gas Operator | Jan 1991 |
| 13553 | Hoff Oil & Gas | | Oil Operator | May 2013 |
| 13554 | Hoffman George A | | Oil & Gas Operator | Dec 2022 |
| 13555 | Hoffman Oil & Gas Company | | Oil & Gas Operator | Aug 1997 |
| 13556 | Hoffman Oil, Inc. | Claflin, KS 67525 | Oil Operator | Sep 2025 |
| 13557 | Hoffman Petroleu | | Oil Operator | Sep 1989 |
| 13558 | Hoffman Petroleum, Inc. | Littleton, CO 80120 | Oil Operator | Sep 1996 |
| 13559 | Hoffman Resources LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 13560 | Hoffman, Brian | Claflin, KS 67525 | Oil Operator | Sep 2025 |
| 13561 | Hoffman, Carol | Strykersville, NY 14145 | Gas Operator | Dec 2024 |
| 13562 | Hoffman, Myrle F. | Denver, CO 80202 | Oil Operator | Dec 1986 |
| 13563 | Hoffmann Oil Company | Eastland, TX 76448 | Oil & Gas Operator | Feb 2026 |
| 13564 | Hofland, James D. | Kevin, MT 59454 | Oil & Gas Operator | Dec 2025 |
| 13565 | Hog Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 13566 | Hogan Drilling Company, Inc. | | Oil & Gas Operator | Mar 1981 |
| 13567 | Hogan Energy Corporation | | Oil & Gas Operator | Oct 1999 |
| 13568 | Hogan Energy, Inc. | | Oil & Gas Operator | Dec 2015 |
| 13569 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
| 13570 | Hogan, Wayne Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2006 |
| 13571 | Hogback Exploration Inc | Fort Smith, AR 72916 | Oil & Gas Operator | Oct 2025 |
| 13572 | Hoge Oil & Gas Expl Inc | Edmond, OK 73013-3709 | Oil & Gas Operator | Oct 2025 |
| 13573 | Hoggard, Kenneth | Loving, TX 76460 | Oil & Gas Operator | Feb 2026 |
| 13574 | Hogoboom Al Oilf | | Oil Operator | Oct 1990 |
| 13575 | Hoke Jr J T | Edmond, OK 73034 | Oil Operator | Nov 1998 |
| 13576 | Holbein & Wright Resources Inc. | Bandera, TX 78003 | Oil & Gas Operator | Feb 2026 |
| 13577 | Holbrook LLC | Bimble, KY 40915 | Oil & Gas Operator | Sep 2025 |
| 13578 | Holco Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Feb 2026 |
| 13579 | Holcomb Company, The | Freer, TX 78357 | Oil & Gas Operator | Aug 1996 |
| 13580 | Holcomb Enterprises | Clyde, TX 79510 | Oil & Gas Operator | Aug 2003 |
| 13581 | Holcomb Oil & Gas Inc | Farmington, NM 87401 | Oil & Gas Operator | Nov 2025 |
| 13582 | Holcomb Oil Comp | | Oil Operator | Sep 1991 |
| 13583 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
| 13584 | Holden Harold B | Billings, MT 59103 | Oil Operator | Jun 1996 |
| 13585 | Holden Jack | Houston, TX 77063 | Oil & Gas Operator | Oct 1992 |
| 13586 | Holden Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 13587 | Holden-Brooke Oil & Gas Co. | George West, TX 78022 | Oil & Gas Operator | Sep 2005 |
| 13588 | Holditch, S.A. & Assoc. Inc. | College Sta, TX 77840 | Oil & Gas Operator | Apr 1994 |
| 13589 | Holifield Oil Company | Giddings, TX 78942 | Oil & Gas Operator | Mar 2009 |
| 13590 | Holke Dave Consulting Inc | Meridian, ID 83646-4812 | Oil & Gas Operator | Oct 2025 |
| 13591 | Holl Investment Co | Logan, OH 43138 | Oil & Gas Operator | Dec 2019 |
| 13592 | Holland Assoc | | Oil Operator | Sep 1987 |
| 13593 | Holland Oil & Gas | Brookesmith, TX 76827 | Oil & Gas Operator | Dec 2010 |
| 13594 | Holland Oil Co. | Petrolia, TX 76377 | Oil Operator | Aug 2010 |
| 13595 | Holland Production Co | | Oil Operator | Aug 1982 |
| 13596 | Holland, W. M. | Petrolia, TX 76377 | Oil & Gas Operator | Jul 2009 |
| 13597 | Hollandsworth & Travis | Longview, TX 75606 | Oil & Gas Operator | Mar 2001 |
| 13598 | Hollandsworth & Travis Oil | Longview, TX 75606 | Oil Operator | May 2003 |
| 13599 | Holleman & Parks Oil & Gas Inc | | Oil & Gas Operator | May 1995 |
| 13600 | Hollenbeck, Lloyd D. | Andover, NY 14806 | Oil & Gas Operator | Dec 2024 |