| 101 | S. M. Reynolds Opr. | | Gas Operator | Dec 1990 |
| 102 | S. P. Penntex Energy, L.P. | Abilene, TX 79605 | Oil & Gas Operator | May 2003 |
| 103 | S. P. Y. Oil Co. | Batson, TX 77519 | Oil & Gas Operator | Mar 2002 |
| 104 | S. Parish Oil Company, Inc. | | Oil & Gas Operator | Dec 1997 |
| 105 | S. R. Weilert Oil LLC | Wichita, KS 67208 | Oil Operator | Nov 2005 |
| 106 | S. S. Tatum | | Oil Operator | Aug 1999 |
| 107 | S. W. Ray, Et Al | | Oil Operator | Mar 2003 |
| 108 | S.A.J.A.S | Brocton, NY 14716 | Gas Operator | Dec 2024 |
| 109 | S.B. Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | Sep 2019 |
| 110 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 111 | S.E.D.I. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2015 |
| 112 | S.H. Loe Oil Corp. | | Oil & Gas Operator | Jan 2025 |
| 113 | S.J. Titan Co., A General Partnership | Hutchinson, KS 67502 | Oil & Gas Operator | May 2015 |
| 114 | S.O.C. Investors, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 115 | S.U.E. Company | Abilene, TX 79604 | Oil Operator | Jan 1998 |
| 116 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 117 | S2 Energy 1, LP | | Oil & Gas Operator | Nov 2012 |
| 118 | S2 Energy Operating LLC | | Oil & Gas Operator | May 2023 |
| 119 | S2 Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 120 | S2 Oil, LLC | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2025 |
| 121 | S2 Oil, LLC (1) | Albany, TX 76430 | Oil Operator | Dec 2025 |
| 122 | Saap Energy, Inc | Newburgh, NY 12550 | Oil Operator | Dec 2023 |
| 123 | Saaw Operating LLC | Protection, KS 67127 | Oil & Gas Operator | Sep 2025 |
| 124 | Saba Energy Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Nov 1994 |
| 125 | Saba Energy Of Texas Inc | Houston, TX 77042 | Oil & Gas Operator | Jul 2007 |
| 126 | Saba Petroleum Inc. | | Oil & Gas Operator | Mar 2006 |
| 127 | Sabalo Exploration Operating,LLC | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Jan 2021 |
| 128 | Sabalo II Operating, LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 2025 |
| 129 | Sabalo Operating, LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Jun 2021 |
| 130 | Sabco Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2011 |
| 131 | Sabco Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2018 |
| 132 | Saber Industries LP | Dallas, TX 75230 | Oil Operator | Dec 2024 |
| 133 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 134 | Saber Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2008 |
| 135 | Sabinal Energy Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2025 |
| 136 | Sabinal Resources, Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Dec 2025 |
| 137 | Sabine Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Jul 1996 |
| 138 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 139 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 140 | Sabine Pipe & Supply Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2004 |
| 141 | Sabine Pipe, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 142 | Sabine Productio | | Oil & Gas Operator | Mar 1994 |
| 143 | Sabine Syndicate No. 1 | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 144 | Sabio Oil & Gas Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 145 | Sable Energy Corp. | Houston, TX 77057 | Oil & Gas Operator | Nov 1999 |
| 146 | Sable Minerals, Inc. | | Oil & Gas Operator | Nov 1993 |
| 147 | Sable Permian Resources Land,LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2019 |
| 148 | Sable Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2021 |
| 149 | Sabos George U | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2013 |
| 150 | Sabre Energy Corporation | Lore City,, OH 43755 | Oil & Gas Operator | Dec 2017 |
| 151 | Sabre Exploratio | | Oil Operator | Oct 1988 |
| 152 | Sabre Exploration, LLC | Wichita, KS 67205 | Oil Operator | Sep 2025 |
| 153 | Sabre Oil And Gas Corp. | Houston, TX 77063 | Oil & Gas Operator | Dec 2025 |
| 154 | Sabre Oil Company, LLC | Boca Raton, FL 33487 | Oil & Gas Operator | Jun 2022 |
| 155 | Sabre Op Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 156 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 157 | Sac & Fox Nation | | Oil & Gas Operator | Jul 2025 |
| 158 | Sackerol Enterprises, Inc. | Plattsburgh, NY 12901 | Oil & Gas Operator | Dec 2025 |
| 159 | Sackett James B | Hanna, OK 74845 | Oil Operator | Oct 2025 |
| 160 | Sackett Oil Company | | Oil & Gas Operator | Oct 1995 |
| 161 | Saco Oil Company | El Dorado, KS 67042 | Oil Operator | Jan 2001 |
| 162 | Saco, Town Of | Saco, MT 59261 | Gas Operator | Nov 2025 |
| 163 | Sacramento Energy Inc. | | Oil & Gas Operator | Oct 2025 |
| 164 | Sacramento Oil & Gas Co. | | Gas Operator | Dec 2003 |
| 165 | Saddle Creek Energy Development | Dallas, TX 75251 | Oil & Gas Operator | Nov 2008 |
| 166 | Saddle Creek Oil, LLC | Albany, TX 76430 | Oil Operator | Dec 2025 |
| 167 | Saddle Rim Energy (Texas), LLC | Greenwood VLG, CO 80111 | Oil Operator | Dec 2025 |
| 168 | Saddleback Exploration, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 169 | Safari Oil Corporation | Gainesville, TX 76240 | Oil & Gas Operator | Sep 2003 |
| 170 | Safari Production Company, Inc. | McAllen, TX 78501 | Oil & Gas Operator | Dec 2025 |
| 171 | Safari Resources, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 172 | Safe Earth Management Inc | | Oil Operator | Nov 2021 |
| 173 | Safe Earth Management LLC | Hammon, OK 73650 | Oil Operator | Nov 2025 |
| 174 | Safemark Oil & Gas, LLC | McKinney, TX 75072 | Oil & Gas Operator | Dec 2025 |
| 175 | Saffel, Wanda P. | Rule, TX 79547 | Oil & Gas Operator | Jun 2003 |
| 176 | Safford, Dianne L. | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 177 | Safire Resources LLC (Osage Only) | | Oil & Gas Operator | Oct 2025 |
| 178 | Sag Oil Company LLC | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 179 | Saga Pet. LTD Liability Co Of Co | Midland, TX 79701 | Oil & Gas Operator | Apr 2004 |
| 180 | Saga Petroleum Corp. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 181 | Saga Petroleum Limited Liability Co Of Co | | Oil & Gas Operator | Sep 2015 |
| 182 | Saga Petroleum Limited Liability Co. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 183 | Saga Petroleum Limited Liability Company Of Colorado | | Gas Operator | Dec 2014 |
| 184 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Dec 2025 |
| 185 | Saga Petroleum, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2018 |
| 186 | Saga Resource Management LLC | | Gas Operator | Oct 2025 |
| 187 | Sage Butte PRB Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 188 | Sage Creek Colony | Chester, MT 59522 | Gas Operator | Nov 2025 |
| 189 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 190 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Dec 2025 |
| 191 | Sage Energy Inc | Dublin, OH 43017 | Oil & Gas Operator | Dec 1988 |
| 192 | Sage Natural Resources LLC | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 193 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 194 | Sage Oil And Gas, LLC | Graham, TX 76450 | Gas Operator | Dec 2025 |
| 195 | Sage Petroleum Co. | Borger, TX 79007 | Oil & Gas Operator | Dec 2002 |
| 196 | Sage Petroleum LLC | Casper, WY 82601 | Oil Operator | Jun 2008 |
| 197 | Sage, Larry George | Virgil, KS 66870 | Oil Operator | Dec 2019 |
| 198 | Sage-California | | Oil Operator | Dec 1988 |
| 199 | Sagebrush Energy, LLC | Canton, MI 48188 | Oil Operator | Dec 2023 |
| 200 | Sagebrush Oil Inc. | Deming, NM 88030 | Oil Operator | Dec 2025 |