| 4601 | H. D. Investments | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 4602 | H. I. M. Producers | Graham, TX 76450 | Oil & Gas Operator | May 1999 |
| 4603 | H.A.N. Operating Incorporated | Clyde, TX 79510 | Oil & Gas Operator | Aug 2016 |
| 4604 | H.E.R. Operating, LLC | Silsbee, TX 77656 | Oil & Gas Operator | Nov 2024 |
| 4605 | H.E.X.T. Operating, LTD. | Buna, TX 77612 | Oil Operator | Mar 2024 |
| 4606 | H.K.E. | Stafford, TX 77497 | Oil & Gas Operator | Nov 2024 |
| 4607 | H.L. Clark Oil Company LLC | Whitesboro, TX 76273 | Oil Operator | Nov 2024 |
| 4608 | H.L.S. Energy Co., Inc. | Uvalde, TX 78801 | Oil & Gas Operator | Aug 2003 |
| 4609 | H.P. Slagel Producing Co., LLC | San Angelo, TX 76902 | Oil Operator | Nov 2024 |
| 4610 | H3 Operating, LLC | Springtown, TX 76082 | Oil & Gas Operator | May 2020 |
| 4611 | Ha.P.C. Oil, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Aug 2006 |
| 4612 | Haas, C. F. Oil & Gas Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Nov 2024 |
| 4613 | Haass Ranch Oil Company, LLC | Castroville, TX 78009 | Oil Operator | Nov 2024 |
| 4614 | Habanero Oil & Gas Operating,LLC | Austin, TX 78701 | Oil & Gas Operator | Feb 2018 |
| 4615 | Haber Resources Corporation | Houston, TX 77063 | Oil & Gas Operator | Mar 1999 |
| 4616 | Hacker Brothers Oil Company, Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2004 |
| 4617 | Hacker Brothers Well Service,Inc | Muenster, TX 76252 | Oil & Gas Operator | Nov 2024 |
| 4618 | Hacker, Freddie J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2012 |
| 4619 | Hadaway Consult And Engineer,LLC | Canadian, TX 79014 | Oil & Gas Operator | Nov 2024 |
| 4620 | Hadaway Engineering Inc | Canadian, TX 79014 | Oil & Gas Operator | Jul 2015 |
| 4621 | Haddad Boynton, LLC | Jonesville, TX 75659 | Oil Operator | Nov 2024 |
| 4622 | Hadley Oil | Nocona, TX 76255 | Oil Operator | Jan 2014 |
| 4623 | Hadley Oil Company, LLC | Nocona, TX 76255 | Oil Operator | Nov 2024 |
| 4624 | Hadson Energy Resources Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1994 |
| 4625 | Haggard Operating Group/Oil | Atascosa, TX 78002 | Oil & Gas Operator | Nov 2024 |
| 4626 | Haggard, E. A. | Graham, TX 76450 | Oil & Gas Operator | Apr 2001 |
| 4627 | Haider Operating, LLC | Pampa, TX 79066 | Oil & Gas Operator | Nov 2024 |
| 4628 | Haigood & Campbell | Archer City, TX 76351 | Oil & Gas Operator | Nov 2024 |
| 4629 | Haigood, Danny | Portland, TX 78374 | Oil & Gas Operator | Mar 2008 |
| 4630 | Hailey Energy Corporation | Wesson, MS 39191 | Gas Operator | May 2013 |
| 4631 | Haimo Oil & Gas LLC | Houston, TX 77042 | Oil & Gas Operator | Aug 2020 |
| 4632 | Hair, Roger D. | Post, TX 79356 | Oil & Gas Operator | Nov 2024 |
| 4633 | Halbouty, Michel T. | Houston, TX 77056 | Oil & Gas Operator | Aug 1997 |
| 4634 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 4635 | Halcon Resources Operating, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2013 |
| 4636 | Hale Oil & Gas Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 1997 |
| 4637 | Hale, Mike E. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2003 |
| 4638 | Halek Energy L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Jan 2014 |
| 4639 | Halex Oil Corporation | Houston, TX 77057 | Oil & Gas Operator | Nov 2024 |
| 4640 | Hall Energy Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2016 |
| 4641 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 4642 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2024 |
| 4643 | Hall Oil & Gas | Coahoma, TX 79511 | Oil & Gas Operator | Nov 2024 |
| 4644 | Hall Oil And Gas LLC | Midland, TX 79707 | Oil & Gas Operator | Nov 2024 |
| 4645 | Hall Phoenix Energy, LLC | Frisco, TX 75034 | Oil & Gas Operator | Jun 2022 |
| 4646 | Hall, D. Corporation | La Grange, TX 78945 | Oil & Gas Operator | Mar 2013 |
| 4647 | Hall, E. G., Oil Co. | Mexia, TX 76667 | Oil & Gas Operator | Nov 2024 |
| 4648 | Hall-Houston Expl. II, L.P. | Houston, TX 77027 | Oil & Gas Operator | Nov 2024 |
| 4649 | Hall-Houston Expl. III, L.P. | Houston, TX 77027 | Oil & Gas Operator | Jul 2013 |
| 4650 | Hall-Houston Oil Company | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 4651 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 4652 | Halliburton Operating Company | Plano, TX 75093 | Oil & Gas Operator | Nov 2024 |
| 4653 | Hallwood Energy Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2005 |
| 4654 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 4655 | Hallwood Petroleum, LLC | Dallas, TX 75219 | Oil & Gas Operator | Jan 2010 |
| 4656 | Halo Energy L.L.C. | Kilgore, TX 75662 | Oil Operator | Nov 2024 |
| 4657 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 4658 | Halvey Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 4659 | Ham Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2000 |
| 4660 | Hamill Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1999 |
| 4661 | Hamill, Claud B. Estate Of | Houston, TX 77002 | Oil & Gas Operator | Nov 1995 |
| 4662 | Hamill, Flora Oil Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2024 |
| 4663 | Hamilton Brothers | Plainview, TX 79073 | Oil & Gas Operator | Mar 2008 |
| 4664 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 4665 | Hamilton, Clay | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Nov 2024 |
| 4666 | Hamilton, J. R. | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Nov 2024 |
| 4667 | Hamilton, John M. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2001 |
| 4668 | Hamilton, W. B., Estate | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2004 |
| 4669 | Hamilton-Tedford Oper. Co., LLC | Wichita Falls, TX 76301 | Oil Operator | May 2007 |
| 4670 | Hamm, Richard | Monahans, TX 79756 | Oil & Gas Operator | Mar 1994 |
| 4671 | Hamm, Richard Inc. | Monahans, TX 79756 | Oil & Gas Operator | Nov 2024 |
| 4672 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Nov 2024 |
| 4673 | Hamman, Blake | Graham, TX 76450 | Oil & Gas Operator | Jul 2020 |
| 4674 | Hammer Oil Company | Post, TX 79356 | Oil & Gas Operator | Jun 2002 |
| 4675 | Hammon Properties | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 1996 |
| 4676 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 4677 | Hampton Oil & Gas | Early, TX 76802 | Gas Operator | Feb 2012 |
| 4678 | Hampton Resources Corporation | Houston, TX 77010 | Oil & Gas Operator | Mar 1996 |
| 4679 | Hampton, Jno. W. & Son | Wichita Falls, TX 76302 | Oil & Gas Operator | Nov 1998 |
| 4680 | Hanaco Operating | Holliday, TX 76366 | Oil Operator | Mar 2008 |
| 4681 | Hanaco, LLC | Holliday, TX 76366 | Oil Operator | Dec 2017 |
| 4682 | Hane Operating, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2005 |
| 4683 | Hanger Oil, L.L.C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2024 |
| 4684 | Hank Oil & Gas, Inc. | Houston, TX 77056 | Oil & Gas Operator | Oct 2023 |
| 4685 | Hankamer, Curtis Corporation,The | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 4686 | Hankey Oil Company | Houston, TX 77027 | Oil & Gas Operator | Feb 2010 |
| 4687 | Hankey Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Mar 2016 |
| 4688 | Hanks, Christopher Glenn | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2024 |
| 4689 | Hanley Petroleum Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 4690 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Aug 2024 |
| 4691 | Hannathon Petroleum II, LLC | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 4692 | Hannathon Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 4693 | Hannis Operating, LLC | Olney, TX 76374 | Oil & Gas Operator | Nov 2024 |
| 4694 | Hansen Oil Corporation | Shreveport, LA 71106 | Oil Operator | Apr 2003 |
| 4695 | Hanshu Production Company | Darrouzett, TX 79024 | Oil & Gas Operator | Apr 2017 |
| 4696 | Hanshu Production Company, LLC | Nashville, TN 37215 | Gas Operator | Nov 2024 |
| 4697 | Hanson Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 4698 | Hanson Minerals Co. | Houston, TX 77042 | Oil & Gas Operator | Oct 1993 |
| 4699 | Hanson Operating Company Inc | Roswell, NM 88202 | Oil & Gas Operator | Aug 2024 |
| 4700 | Hanson Production Company | Cuero, TX 77954 | Oil & Gas Operator | Jul 2009 |