| 5101 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 5102 | Herber, Carl R. | Denton, TX 76205 | Oil & Gas Operator | Apr 2014 |
| 5103 | Herbig Oil & Gas Co. | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 5104 | Herbig, J F | Midland, TX 79701 | Oil & Gas Operator | Mar 1998 |
| 5105 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
| 5106 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2026 |
| 5107 | Hereford, J. A. Industries, Inc. | Nacogdoches, TX 75961 | Oil & Gas Operator | Feb 2026 |
| 5108 | Herencia Operating LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 5109 | Heritage Energy Corporation | Waco, TX 76710 | Oil & Gas Operator | Sep 2004 |
| 5110 | Heritage Expl. & Prod. Co., Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2000 |
| 5111 | Heritage Gas Corporation | Shreveport, LA 71101 | Gas Operator | Aug 1997 |
| 5112 | Heritage Operating Co., Inc. The | Stafford, TX 77497 | Oil & Gas Operator | May 1997 |
| 5113 | Heritage Petroleum Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Feb 2026 |
| 5114 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2026 |
| 5115 | Heritage Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Feb 2014 |
| 5116 | Heritage Standard Corporation | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 5117 | Hermat Salt Water Disposal, Inc. | Corpus Chrsti, TX 78426 | Oil Operator | Aug 2012 |
| 5118 | Hermes, A. J. | Lindsay, TX 76250 | Oil & Gas Operator | Mar 2018 |
| 5119 | Herms, Walter | Luling, TX 78648 | Oil & Gas Operator | Sep 2002 |
| 5120 | Herod Investments, Inc. | Ranger, TX 76470 | Oil & Gas Operator | Jul 1999 |
| 5121 | Herod, Bill | Ranger, TX 76470 | Oil & Gas Operator | Apr 2022 |
| 5122 | Herricks Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Jan 2010 |
| 5123 | Herring, Casey Oil Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Nov 2008 |
| 5124 | Herring, D Oil & Gas Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Feb 2026 |
| 5125 | Herring, Ray | Graham, TX 76450 | Oil & Gas Operator | Jul 2014 |
| 5126 | Herrmann Energy | Amarillo, TX 79159 | Oil & Gas Operator | May 2015 |
| 5127 | Herrmann, J.B. | Amarillo, TX 79159 | Oil & Gas Operator | Aug 2019 |
| 5128 | Herrmann, S. W. Oil & Gas | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2026 |
| 5129 | Herschap Bros. | Bruni, TX 78344 | Oil & Gas Operator | Feb 2026 |
| 5130 | Herv Oil, LLC | Oklahoma City, OK 73116 | Oil Operator | Dec 2025 |
| 5131 | Herzfeld Fabricators Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2017 |
| 5132 | Hess Bros. DRLG. Co. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2008 |
| 5133 | Hess Corporation | Houston, TX 77010 | Oil & Gas Operator | Aug 2017 |
| 5134 | Hess Production | Quitaque, TX 79255 | Oil & Gas Operator | Feb 2026 |
| 5135 | Hess Seminole Assets LLC | Seminole, TX 79360 | Oil & Gas Operator | Aug 2017 |
| 5136 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Feb 2026 |
| 5137 | Hewitt, Alan P. | Midland, TX 79702 | Oil & Gas Operator | Aug 1997 |
| 5138 | Hewitt, Robert J. | Victoria, TX 77901 | Oil & Gas Operator | Jun 2004 |
| 5139 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Feb 2026 |
| 5140 | Hexp Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 5141 | Heydrick Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 5142 | Hez Petroleum Company | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5143 | HG Operating LLC | Plano, TX 75026 | Oil & Gas Operator | Feb 2026 |
| 5144 | Hgi Corporation | Nada, TX 77460 | Oil & Gas Operator | Apr 2016 |
| 5145 | HGN Operating Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2014 |
| 5146 | HGN Operating I, LLC | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 5147 | HH&F Partners | Katy, TX 77450 | Oil & Gas Operator | Sep 2019 |
| 5148 | Hi - Mountain Energy Corporation | Odessa, TX 79762 | Oil & Gas Operator | Feb 2026 |
| 5149 | Hi Plains Hydrocarbons, Inc. | Sunray, TX 79086 | Oil & Gas Operator | Oct 2002 |
| 5150 | Hibbard Energy, LP | Whitehouse, TX 75791 | Oil & Gas Operator | Feb 2026 |
| 5151 | Hibernia Resources III, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2023 |
| 5152 | Hibernia Resources IV, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 5153 | Hibernia Resources, LLC | Houston, TX 77027 | Oil & Gas Operator | Jun 2014 |
| 5154 | Hickman & Ickert | Olney, TX 76374 | Oil & Gas Operator | Feb 2002 |
| 5155 | Hickman-Jordan-Halligan Ranches | Blackwell, TX 79506 | Oil & Gas Operator | Feb 1998 |
| 5156 | Hickory Petroleum Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2013 |
| 5157 | Hickox Oil Texas Company, Inc. | Mobile, AL 36689 | Oil & Gas Operator | Feb 1996 |
| 5158 | Hicks Exploration, LLC | Dover, OK 73734 | Gas Operator | Dec 2024 |
| 5159 | Hicks, Robert F. | San Angelo, TX 76904 | Oil & Gas Operator | Mar 1994 |
| 5160 | Hicon Gas Producers, Inc. | New York, NY 10110 | Oil & Gas Operator | Oct 1999 |
| 5161 | Hidalgo Oil & Exploration Corp. | New Braunfels, TX 78131 | Oil & Gas Operator | Feb 2026 |
| 5162 | Higginbotham, O. V. | Cedar Park, TX 78613 | Oil & Gas Operator | Jul 1996 |
| 5163 | High Bluff Operating, LLC | Littleton, CO 80161 | Oil & Gas Operator | May 2018 |
| 5164 | High Chapparal Oil Company | Plntersville, TX 77363 | Oil & Gas Operator | Aug 2003 |
| 5165 | High Desert Resources, L.L.C. | Midland, TX 79704 | Oil Operator | Feb 2026 |
| 5166 | High Island Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 5167 | High Island Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2017 |
| 5168 | High Mountain Oil & Gas | Hobbs, NM 88240 | Oil & Gas Operator | Jan 2019 |
| 5169 | High Mountain Oil & Gas, LLC | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2026 |
| 5170 | High Noon Resources, LLC | Allen, TX 75013 | Oil & Gas Operator | Feb 2026 |
| 5171 | High Plains Gas Systems, Inc. | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 5172 | High River Res Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2026 |
| 5173 | High River Resources Operating, LLC | Farmington, NM 87401 | Oil & Gas Operator | Nov 2025 |
| 5174 | High Sierra Operating, LTD. | Canyon Lake, TX 78133 | Oil & Gas Operator | Mar 2008 |
| 5175 | High Sky Oil & Gas | Midland, TX 79705 | Oil & Gas Operator | Jun 2008 |
| 5176 | High Sky Partners LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2015 |
| 5177 | Higher Standard Oil Company,Inc. | Frisco, TX 75034 | Oil Operator | Feb 2026 |
| 5178 | Highground, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 5179 | Highland Production Company | Midland, TX 79701 | Oil & Gas Operator | Mar 1996 |
| 5180 | Highmark Energy Operating LLC | Dallas, TX 75222 | Oil & Gas Operator | Feb 2026 |
| 5181 | Highmount Expl & Prod Texas LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2014 |
| 5182 | Highmount Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2014 |
| 5183 | Highpeak Energy Holdings, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 5184 | Hightower Exploration | Kilgore, TX 75662 | Oil & Gas Operator | Feb 2026 |
| 5185 | Hilbers Oil & Gas | Archer City, TX 76351 | Oil & Gas Operator | Oct 2002 |
| 5186 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Feb 2026 |
| 5187 | Hill Operating LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2023 |
| 5188 | Hill Production Co Inc-Wisconsin | Humble, TX 77347 | Oil & Gas Operator | Jun 1993 |
| 5189 | Hill Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2009 |
| 5190 | Hill Production Company No. 2 | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 5191 | Hill, A G | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 5192 | Hill, Albert, Trust | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 5193 | Hill, Bill | Kilgore, TX 75663 | Oil Operator | Mar 2014 |
| 5194 | Hill, Charles Drilling, Inc. | Grand Prairie, TX 75052 | Oil & Gas Operator | Feb 2026 |
| 5195 | Hill, Hub, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 1994 |
| 5196 | Hill, R.M. Operating Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5197 | Hill, T. R. | Graham, TX 76450 | Oil & Gas Operator | Apr 1995 |
| 5198 | Hill-Lake Gas Storage, L.P. | Houston, TX 77057 | Oil & Gas Operator | Aug 2010 |
| 5199 | Hill-Lake Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Feb 2026 |
| 5200 | Hillcrest Petroleum, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2019 |