| 5101 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 5102 | Houston Expl. & Prod. Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Aug 2003 |
| 5103 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2024 |
| 5104 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 5105 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 5106 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 5107 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | Nov 2024 |
| 5108 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Nov 2024 |
| 5109 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Nov 2024 |
| 5110 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 5111 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2024 |
| 5112 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Nov 2024 |
| 5113 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 5114 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | Nov 2024 |
| 5115 | Howard Operating Co. | Nocona, TX 76255 | Oil & Gas Operator | Nov 2024 |
| 5116 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 5117 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 5118 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 5119 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Nov 2024 |
| 5120 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 5121 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 5122 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 5123 | Howell, VIrginia C. Estate Of | Breckenridge, TX 76424 | Gas Operator | Nov 2024 |
| 5124 | Howitzer Operating, LLC | Farmers BRNCH, TX 75234 | Oil Operator | Nov 2024 |
| 5125 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 5126 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 5127 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 5128 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 5129 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2023 |
| 5130 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 5131 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 5132 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | Nov 2024 |
| 5133 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 5134 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Nov 2024 |
| 5135 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 5136 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 5137 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | Nov 2024 |
| 5138 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 5139 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 5140 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 5141 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 5142 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | Nov 2024 |
| 5143 | Hubcap Oil, LLC | Arlington, TX 76016 | Oil Operator | Nov 2024 |
| 5144 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 5145 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 5146 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 5147 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Nov 2024 |
| 5148 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 5149 | Hudson Brothers Mining Co., Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 1994 |
| 5150 | Hudson, Comer Oil & Gas | Cisco, TX 76437 | Oil & Gas Operator | Jan 2003 |
| 5151 | Huff Minerals, LTD. | Amarillo, TX 79101 | Gas Operator | Nov 2024 |
| 5152 | Huff, Jack | Midland, TX 79710 | Oil & Gas Operator | Dec 2004 |
| 5153 | Huffman, H. L., LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Sep 1994 |
| 5154 | Hufo Production Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2002 |
| 5155 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 5156 | Hughes & Patterson Oper. Corp. | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 5157 | Hughes & Shawver | Olney, TX 76374 | Oil & Gas Operator | Aug 1996 |
| 5158 | Hughes Legacy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2022 |
| 5159 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 5160 | Hughes Supplies, Inc. | Greenwood, LA 71033 | Oil & Gas Operator | Jul 2019 |
| 5161 | Hughes, Bill Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 5162 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 5163 | Hughes, Dan A. Company | Beeville, TX 78104 | Oil & Gas Operator | May 2006 |
| 5164 | Hughes, Dan A. Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | Nov 2024 |
| 5165 | Hughey, Gaylord T. SR. Oper. Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 1998 |
| 5166 | Hughey, W. R., Operating Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2005 |
| 5167 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 5168 | Hugoton Operating Company, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Nov 2024 |
| 5169 | Hugus Investment Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Nov 2024 |
| 5170 | Hulen Operating Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2024 |
| 5171 | Hull Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2021 |
| 5172 | Hulse, J. T. | Archer City, TX 76351 | Oil & Gas Operator | Nov 2024 |
| 5173 | Hulse, Tommy P. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 5174 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 5175 | Hulsey Oil Company | Dallas, TX 75205 | Oil & Gas Operator | Aug 1999 |
| 5176 | Humak Processors, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2005 |
| 5177 | Humber Oil Company | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 5178 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
| 5179 | Humphrey, Thos.D. Oil Prop.,Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Aug 1999 |
| 5180 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 5181 | Hunt Cimarron LTD. Partnership | Roswell, NM 88202 | Oil & Gas Operator | Nov 2024 |
| 5182 | Hunt Industries, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2000 |
| 5183 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 5184 | Hunt Operating, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2024 |
| 5185 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5186 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5187 | Hunt, Hassie Exploration Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5188 | Hunt, WM. Herbert, Trust Est. | Dallas, TX 75201 | Oil & Gas Operator | Sep 1998 |
| 5189 | Hunter & Hedrick Production, Inc | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 1995 |
| 5190 | Hunter & McDonald | Wichita Falls, TX 76309 | Oil & Gas Operator | Jul 2001 |
| 5191 | Hunter Brothers | Wichita Falls, TX 76302 | Oil & Gas Operator | Jul 2007 |
| 5192 | Hunter Energy, Inc. | Hurst, TX 76053 | Oil & Gas Operator | Nov 2024 |
| 5193 | Hunter Oil & Gas Co. | Bangs, TX 76823 | Oil & Gas Operator | Nov 2024 |
| 5194 | Hunter Oil Corporation | Gruver, TX 79040 | Gas Operator | Nov 2024 |
| 5195 | Hunter Petroleum Inc. | Alice, TX 78333 | Oil & Gas Operator | May 2014 |
| 5196 | Hunter, Rocquelle | Coleman, TX 76834 | Oil Operator | Nov 2024 |
| 5197 | Hunters Creek Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 5198 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2024 |
| 5199 | Huntington Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2006 |
| 5200 | Huntland Properties, LTD. | Santa Anna, TX 76878 | Oil & Gas Operator | Nov 2024 |