| 4701 | Harper Hefte, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | May 2024 |
| 4702 | Harper Oil And Gas, LLC | Pratt, KS 67124 | Oil & Gas Operator | Jan 2024 |
| 4703 | Harper Production, LLC | Spearman, TX 79081 | Oil & Gas Operator | May 2024 |
| 4704 | Harper, Clint | Woodson, TX 76491 | Oil & Gas Operator | May 2024 |
| 4705 | Harper, Wayne | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 4706 | Harper, William E. | Woodson, TX 76491 | Oil & Gas Operator | Jul 2016 |
| 4707 | Harper, William E. Estate Of | Woodson, TX 76491 | Oil & Gas Operator | May 2024 |
| 4708 | Harrell Operating Inc | Graham, TX 76450 | Oil & Gas Operator | Sep 2005 |
| 4709 | Harrell Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Jun 2008 |
| 4710 | Harrell, Charles | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 4711 | Harrier Holdings, LTD. | Burnet, TX 78611 | Oil Operator | May 2024 |
| 4712 | Harrigan Energy Partners, Inc. | Houston, TX 77058 | Oil & Gas Operator | Sep 2010 |
| 4713 | Harrigan Operating, LLC | Houston, TX 77258 | Oil & Gas Operator | Apr 2020 |
| 4714 | Harris Energy Partners Op, LLC | Fort Worth, TX 76116 | Oil Operator | May 2024 |
| 4715 | Harris Energy Services, LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 4716 | Harris Oil & Gas Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2016 |
| 4717 | Harris, Jake, Trustee | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2001 |
| 4718 | Harris, Sam E. | Albany, TX 76430 | Oil & Gas Operator | Aug 2003 |
| 4719 | Harrison Interests, LTD. | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 4720 | Harrison Oil & Gas Inc | Houston, TX 77019 | Oil & Gas Operator | Feb 2024 |
| 4721 | Harrison, Dan J III&Bruce F Est | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 4722 | Harrison, Dan J. III&Bruce F. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 4723 | Harrison, Sam G. Oil, Inc. | Houston, TX 77019 | Oil & Gas Operator | Nov 2019 |
| 4724 | Hart & McFarland | Vivian, LA 71082 | Oil & Gas Operator | May 2024 |
| 4725 | Hart Petroleum Services, Inc | Robstown, TX 78380 | Oil & Gas Operator | May 2024 |
| 4726 | Hartel, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Aug 1997 |
| 4727 | Harter, Ron | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 4728 | Hartoil Corporation | Post, TX 79356 | Oil & Gas Operator | May 2024 |
| 4729 | Harvard Petroleum Company, LLC | Roswell, NM 88202 | Oil & Gas Operator | May 2024 |
| 4730 | Harvard Petroleum Corporation | Roswell, NM 88201 | Oil & Gas Operator | Dec 2004 |
| 4731 | Harvest Petroleum Inc. | Frisco, TX 75033 | Oil & Gas Operator | May 2024 |
| 4732 | Harvey Brothers Oil & Gas | Corpus Chrsti, TX 78408 | Oil & Gas Operator | Jul 2004 |
| 4733 | Harvey, James W. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 4734 | Harvey, Mike W. Oil & Gas | Corpus Chrsti, TX 78408 | Oil & Gas Operator | Aug 2003 |
| 4735 | Harvey, Robert E., Jr. | Nixon, TX 78140 | Oil & Gas Operator | Oct 2003 |
| 4736 | Harvick Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Feb 2009 |
| 4737 | Harvick, George R. | Albany, TX 76430 | Oil & Gas Operator | May 2024 |
| 4738 | Harwell Enterprises Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Jan 2005 |
| 4739 | Harwood Exploration, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 1995 |
| 4740 | Hassie Hunt Expl. Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2008 |
| 4741 | Hastings, J. W. Oil Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2010 |
| 4742 | Hat Creek Energy LLC | Denver, CO 80209 | Oil & Gas Operator | Jun 2019 |
| 4743 | Hat Oil & Gas, Inc. | Slaton, TX 79364 | Oil & Gas Operator | Feb 2002 |
| 4744 | Hatcher, Ray | Burkburnett, TX 76354 | Oil & Gas Operator | Jun 2002 |
| 4745 | Hatler Oil Company, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2000 |
| 4746 | Havens Oil Company | Early, TX 76803 | Oil & Gas Operator | Feb 2024 |
| 4747 | Haverkamp, Floyd | Muenster, TX 76252 | Oil & Gas Operator | Oct 2001 |
| 4748 | Havins Energy | Burkburnett, TX 76354 | Oil & Gas Operator | May 2006 |
| 4749 | Hawk Exploration And Production | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Oct 1995 |
| 4750 | Hawk Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 4751 | Hawk Petroleum, L L C | San Diego, TX 78384 | Oil & Gas Operator | May 2024 |
| 4752 | Hawk Well Service | Borger, TX 79007 | Oil & Gas Operator | May 2024 |
| 4753 | Hawk-Hill Operating Company, LLC | Plano, TX 75093 | Oil & Gas Operator | Jun 2009 |
| 4754 | Hawkbend LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 4755 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 4756 | Hawkeye Transmission Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2000 |
| 4757 | Hawkins Energy Corporation | Austin, TX 78711 | Oil & Gas Operator | Apr 1997 |
| 4758 | Hawkins Oil & Gas Company | Richardson, TX 75080 | Oil & Gas Operator | May 2024 |
| 4759 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 4760 | Hawkins Oil, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 4761 | Hawkins, B. O. | Aspermont, TX 79502 | Oil & Gas Operator | May 2024 |
| 4762 | Hawkins, G. A. | Graham, TX 76450 | Oil & Gas Operator | Dec 2013 |
| 4763 | Hawkwood Energy Operating, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 4764 | Hawn Bros. & Venus Oil Co. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 1995 |
| 4765 | Hawn Brothers | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2003 |
| 4766 | Hawn Brothers Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jan 2003 |
| 4767 | Hawthorn Energy Partners, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2024 |
| 4768 | Hawthorne Oil And Gas Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1993 |
| 4769 | Hay Creek Investments, L.L.C. | Santa Anna, TX 76878 | Oil Operator | Jul 2018 |
| 4770 | Hayabusa Energy USA, LLC | Pampa, TX 79065 | Oil & Gas Operator | May 2024 |
| 4771 | Hayes Oil & Gas Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2005 |
| 4772 | Hayes, Marshall A. III | Chilton, TX 76632 | Oil & Gas Operator | May 2024 |
| 4773 | Haylan Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jan 2000 |
| 4774 | Haynes & Shirley Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | May 2024 |
| 4775 | Haynes Production Company, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2006 |
| 4776 | Haynie Drilling Co. Inc. | Corsicana, TX 75151 | Oil & Gas Operator | Dec 2011 |
| 4777 | Haynie Energy Services LLC | Wortham, TX 76693 | Oil Operator | May 2024 |
| 4778 | Hays & Boydston | Graham, TX 76450 | Oil & Gas Operator | Mar 1994 |
| 4779 | Hays & Croker Partnership | Olney, TX 76374 | Oil & Gas Operator | May 2024 |
| 4780 | Hays Partnership | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 4781 | Hays, David H. | Olney, TX 76374 | Oil & Gas Operator | Dec 1995 |
| 4782 | Hays, John H. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 4783 | Hays, Mrs. Earl (Cora) | Big Spring, TX 79720 | Oil & Gas Operator | Apr 2005 |
| 4784 | Hays, T.G. Petroleum Expl., Inc. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 4785 | Hazelett Lease Service, Inc. | Lockhart, TX 78644 | Oil Operator | May 2024 |
| 4786 | Hazelett Oil Company, Inc. | Dale, TX 78616 | Oil & Gas Operator | Sep 2005 |
| 4787 | Hazelett Oil, Inc. | Dale, TX 78616 | Oil & Gas Operator | May 2024 |
| 4788 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 4789 | HBC Oil Company, LLC | San Antonio, TX 78266 | Oil Operator | May 2024 |
| 4790 | Hce Operating LLC | Smyer, TX 79367 | Oil & Gas Operator | May 2024 |
| 4791 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 4792 | HD Special-Situations, LP | San Francisco, CA 94111 | Oil & Gas Operator | Feb 2014 |
| 4793 | Headington Energy Corporation | Dallas, TX 75231 | Oil & Gas Operator | Aug 1992 |
| 4794 | Headington Energy Partners, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 4795 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 4796 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 4797 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 4798 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 4799 | Headwaters Energy Partners, LLC | Dripping SPGS, TX 78620 | Oil & Gas Operator | May 2024 |
| 4800 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |