| 4901 | Hayes, Marshall A. III | Chilton, TX 76632 | Oil & Gas Operator | Mar 2025 |
| 4902 | Haylan Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jan 2000 |
| 4903 | Haynes & Shirley Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Mar 2025 |
| 4904 | Haynes Production Company, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2006 |
| 4905 | Haynie Drilling Co. Inc. | Corsicana, TX 75151 | Oil & Gas Operator | Dec 2011 |
| 4906 | Haynie Energy Services LLC | Wortham, TX 76693 | Oil Operator | Mar 2025 |
| 4907 | Hays & Boydston | Graham, TX 76450 | Oil & Gas Operator | Mar 1994 |
| 4908 | Hays & Croker Partnership | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 4909 | Hays Partnership | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 4910 | Hays, David H. | Olney, TX 76374 | Oil & Gas Operator | Dec 1995 |
| 4911 | Hays, John H. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 4912 | Hays, Mrs. Earl (Cora) | Big Spring, TX 79720 | Oil & Gas Operator | Apr 2005 |
| 4913 | Hays, T.G. Petroleum Expl., Inc. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 4914 | Haywood, Paul M. Jr. | Denton, TX 76206 | Oil & Gas Operator | Mar 2002 |
| 4915 | Hazelett Oil Company, Inc. | Dale, TX 78616 | Oil & Gas Operator | Sep 2005 |
| 4916 | Hazelett Oil, Inc. | Dale, TX 78616 | Oil & Gas Operator | Aug 2024 |
| 4917 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 4918 | HBC Oil Company, LLC | San Antonio, TX 78266 | Oil Operator | Mar 2025 |
| 4919 | Hce Operating LLC | Smyer, TX 79367 | Oil & Gas Operator | Mar 2025 |
| 4920 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 4921 | HD Special-Situations, LP | San Francisco, CA 94111 | Oil & Gas Operator | Feb 2014 |
| 4922 | Headington Energy Corporation | Dallas, TX 75231 | Oil & Gas Operator | Aug 1992 |
| 4923 | Headington Energy Partners, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 4924 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 4925 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 4926 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 4927 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 4928 | Headwaters Energy Partners, LLC | Dripping SPGS, TX 78620 | Oil & Gas Operator | Mar 2025 |
| 4929 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |
| 4930 | Heape, Gene G. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2003 |
| 4931 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 4932 | Heartland Production, Inc. | Cuero, TX 77954 | Oil & Gas Operator | Mar 2025 |
| 4933 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 4934 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 4935 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 4936 | Hedrick Production Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Mar 2025 |
| 4937 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 4938 | Heifer Production Company LLC | Austin, TX 78746 | Oil & Gas Operator | Mar 2025 |
| 4939 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Mar 2025 |
| 4940 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 4941 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Mar 2025 |
| 4942 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 4943 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 4944 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 4945 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 4946 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 4947 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Mar 2025 |
| 4948 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 4949 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 4950 | Helmer Energy & Stanton Engr. | Tyler, TX 75702 | Oil & Gas Operator | Jun 1998 |
| 4951 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2024 |
| 4952 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 4953 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 4954 | Helton Petroleum | Pampa, TX 79066 | Oil & Gas Operator | Mar 2025 |
| 4955 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Mar 2025 |
| 4956 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 4957 | Hemco Production, L. L. C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2016 |
| 4958 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 4959 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 4960 | Henderson Natural Res, L.L.C. | Crozet, VA 22932 | Oil & Gas Operator | Mar 2025 |
| 4961 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
| 4962 | Henderson, Bryan, Co. | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 4963 | Henderson, Peter Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2020 |
| 4964 | Henderson, Sam F. | Odessa, TX 79760 | Oil & Gas Operator | Nov 2002 |
| 4965 | Henderson, Sam W. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2019 |
| 4966 | Hendon WM E. Jr. Rev LVNG Trust | Everett, WA 98208 | Oil & Gas Operator | Mar 2025 |
| 4967 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 4968 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Mar 2025 |
| 4969 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 4970 | Hennig Production Co., Inc. | Tyler, TX 75701 | Oil & Gas Operator | Mar 2025 |
| 4971 | Henry Paul Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Mar 2025 |
| 4972 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 4973 | Henry Petroleum LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2025 |
| 4974 | Henry Petroleum LP | Midland, TX 79701 | Oil & Gas Operator | Dec 2008 |
| 4975 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 4976 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Mar 2025 |
| 4977 | Henry, J.R. Inc | Brenham, TX 77833 | Oil & Gas Operator | Mar 2025 |
| 4978 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 4979 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 4980 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 4981 | Hep Oil Company LTD | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 4982 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 4983 | Herber, Carl R. | Denton, TX 76205 | Oil & Gas Operator | Apr 2014 |
| 4984 | Herbig Oil & Gas Co. | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 4985 | Herbig, J F | Midland, TX 79701 | Oil & Gas Operator | Mar 1998 |
| 4986 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
| 4987 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 4988 | Hereford, J. A. Industries, Inc. | Nacogdoches, TX 75961 | Oil & Gas Operator | Mar 2025 |
| 4989 | Herencia Operating LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2025 |
| 4990 | Heritage Energy Corporation | Waco, TX 76710 | Oil & Gas Operator | Sep 2004 |
| 4991 | Heritage Expl. & Prod. Co., Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2000 |
| 4992 | Heritage Operating Co., Inc. The | Stafford, TX 77497 | Oil & Gas Operator | May 1997 |
| 4993 | Heritage Petroleum Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Mar 2025 |
| 4994 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Mar 2025 |
| 4995 | Heritage Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Feb 2014 |
| 4996 | Heritage Standard Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 4997 | Hermat Salt Water Disposal, Inc. | Corpus Chrsti, TX 78426 | Oil Operator | Aug 2012 |
| 4998 | Hermes, A. J. | Lindsay, TX 76250 | Oil & Gas Operator | Mar 2018 |
| 4999 | Herms, Walter | Luling, TX 78648 | Oil & Gas Operator | Sep 2002 |
| 5000 | Herod Investments, Inc. | Ranger, TX 76470 | Oil & Gas Operator | Jul 1999 |