| 2101 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 2102 | Staggered T Oil LLC | Quanah, TX 79252 | Oil Operator | Sep 2025 |
| 2103 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 2104 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Jun 2025 |
| 2105 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | May 2025 |
| 2106 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 2107 | Stahl Petroleum Co. | Amarillo, TX 79118 | Oil & Gas Operator | Aug 2003 |
| 2108 | Stal Oil Production, L.L.C. | Argyle, TX 76226 | Oil Operator | Sep 2025 |
| 2109 | Stalcup Oil Comp | | Oil Operator | Dec 1992 |
| 2110 | Stalcup Oil Company | | Oil Operator | Oct 2009 |
| 2111 | Staley Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 2112 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 2113 | Staley, Jack C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 2114 | Stalica, Donald E. | Pavilion, NY 14525 | Gas Operator | Dec 2024 |
| 2115 | Stalking Horse Energy, Limited Liability Company | La Porte, TX 77571 | Oil & Gas Operator | Sep 2025 |
| 2116 | Stalking Horse Energy, LLC | Denver, CO 80246 | Oil Operator | Jun 2025 |
| 2117 | Stallings Eugene | | Oil Operator | Jul 1994 |
| 2118 | Stallion Energy LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2009 |
| 2119 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 2120 | Stallion Inc. | Hurricane, WV 25526 | Oil & Gas Operator | Dec 2021 |
| 2121 | Stallion Oil Company | Lafayette, LA 70505 | Oil & Gas Operator | Jun 2004 |
| 2122 | Stallion Oil Corporation | | Oil & Gas Operator | Nov 1987 |
| 2123 | Stallion Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 2124 | Stalnaker Energy Corporation | | Oil & Gas Operator | Dec 2021 |
| 2125 | Stalnaker Oil Company | Maud, OK 74854-0295 | Oil Operator | May 2017 |
| 2126 | Stalnaker, William K | | Oil & Gas Operator | Dec 2008 |
| 2127 | Stalwart Energy Co | Tulsa, OK 74103-3518 | Oil & Gas Operator | Apr 2014 |
| 2128 | Stamic Oil LLC | Duncan, OK 73534-1898 | Oil & Gas Operator | Oct 2021 |
| 2129 | Stampede Energy Corp. | Canada, 00100 | Oil & Gas Operator | Mar 2000 |
| 2130 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2025 |
| 2131 | Stanco Petroleum Inc | Kimball, NE 69145 | Oil & Gas Operator | Jul 1999 |
| 2132 | Standard Alaska Production Company | | Oil & Gas Operator | Dec 1987 |
| 2133 | Standard Oil Co Of Calif | | Oil & Gas Operator | Dec 1983 |
| 2134 | Standard Oil Co Of WV | Walton, WV 25286 | Oil & Gas Operator | Dec 2023 |
| 2135 | Standard Oil Company, Inc. | Parkesburg, WV 26103 | Oil & Gas Operator | Mar 2022 |
| 2136 | Standard Oil Of Kentucky, Inc | | Oil Operator | Dec 2022 |
| 2137 | Standard Oil Tools, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Sep 2025 |
| 2138 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Apr 2025 |
| 2139 | Standard Operating Company, LLC | | Oil & Gas Operator | May 2022 |
| 2140 | Standard Operating Inc | | Oil Operator | Jun 1986 |
| 2141 | Standard Production | | Oil Operator | Oct 1997 |
| 2142 | Standard Resources Corp. | Houston, TX 77063 | Oil & Gas Operator | Sep 2025 |
| 2143 | Standard Silver Corp | Richardson, TX 750801946 | Gas Operator | Aug 2024 |
| 2144 | Standby Farms | Louisville, OH 44641 | Oil & Gas Operator | Dec 2024 |
| 2145 | Standing Bear Petroleum Inc. | | Oil & Gas Operator | Dec 2005 |
| 2146 | Standley* Robert K Dba Otis Energy | | Oil Operator | Jan 2023 |
| 2147 | Stanlee Oil LLC | | Oil Operator | Mar 2025 |
| 2148 | Stanoco Oil Co | Central City, KY 42330 | Oil & Gas Operator | Dec 2021 |
| 2149 | Stanolind Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 2150 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 2151 | Stanolind Operating LLC Dba Stanolind NM LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2014 |
| 2152 | Stanolind Permian LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 2153 | Stanolind Production LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 2154 | Stanolind SJ LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2018 |
| 2155 | Stanotex, LLC | Katy, TX 77494 | Oil & Gas Operator | Sep 2025 |
| 2156 | Stanton Leo F & Leo H | Wynona, OK 74084 | Oil & Gas Operator | Jun 1999 |
| 2157 | Stanton Mineral Development Inc | Austin, TX 78759 | Oil & Gas Operator | Sep 2025 |
| 2158 | Stanton, Joni R | | Oil Operator | May 2025 |
| 2159 | Staples, James W. | Tuleta, TX 78162 | Oil & Gas Operator | Sep 2014 |
| 2160 | Staples, James W. Prod. Co. | Tuleta, TX 78162 | Oil & Gas Operator | Sep 2025 |
| 2161 | Staples, Tommy Oil Co. | Pettus, TX 78146 | Oil & Gas Operator | Mar 2008 |
| 2162 | Star Acquisition VII, LLC | Littleton, CO 801249743 | Oil & Gas Operator | Jul 2007 |
| 2163 | Star Energy Inc | Dayton, PA 16222-4325 | Oil & Gas Operator | Dec 2024 |
| 2164 | Star Expl Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1988 |
| 2165 | Star Falcon Oil Co. | | Oil Operator | Feb 1986 |
| 2166 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Sep 2025 |
| 2167 | Star Oil & Gas | Ben Bolt, TX 78342 | Oil & Gas Operator | Sep 2025 |
| 2168 | Star Oil & Gas, Inc. | | Oil & Gas Operator | Sep 1995 |
| 2169 | Star Oil And Gas LTD | Racine, OH 45771 | Oil & Gas Operator | Dec 2023 |
| 2170 | Star Oil Company | Wichita, KS 67230 | Oil & Gas Operator | Mar 2025 |
| 2171 | Star Oil Operating Company LLC | Laramie, WY 82073 | Oil & Gas Operator | Jul 2025 |
| 2172 | Star One Energy, Inc. | Fort Worth, TX 76163 | Oil & Gas Operator | May 2012 |
| 2173 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Sep 2025 |
| 2174 | Star Resources LLC | Englewood, CO 80155-5185 | Oil & Gas Operator | Dec 2013 |
| 2175 | Star Resources, LTD. | Wichita, KS 67202 | Oil Operator | Nov 2002 |
| 2176 | Star-Jet Co. | Gainesville, TX 76240 | Oil Operator | Sep 2025 |
| 2177 | Starbrite Energy LLC | Enid, OK 73702-0549 | Oil & Gas Operator | Oct 2018 |
| 2178 | Starco Exploration, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Sep 2025 |
| 2179 | Stardust Leasing, Inc. | Richmond, TX 77469 | Oil & Gas Operator | Jul 1999 |
| 2180 | Stargas Co | Tulsa, OK 74136-5407 | Oil & Gas Operator | Aug 2013 |
| 2181 | Stark Oil Properties | Asher, OK 74826 | Oil & Gas Operator | Jan 1997 |
| 2182 | Stark Petroleum | Tuleta, TX 78162 | Oil & Gas Operator | Sep 2025 |
| 2183 | Starkey Oilfield Service, Inc. | Sweet Home, TX 77987 | Oil & Gas Operator | Aug 2004 |
| 2184 | Starks Leslie | Wetumka, OK 74883-0003 | Oil & Gas Operator | Oct 1995 |
| 2185 | Starlight Resources LLC | | Oil & Gas Operator | Jun 2006 |
| 2186 | Starlight Ridge | Whitesboro, TX 76273 | Oil & Gas Operator | Sep 2025 |
| 2187 | Starr Operating Company | Austin, TX 78759 | Oil & Gas Operator | Sep 2025 |
| 2188 | Starr Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2025 |
| 2189 | Starrak Operating Company, Inc. | Midland, TX 79706 | Oil & Gas Operator | Jun 1999 |
| 2190 | Startap, Inc. | Conroe, TX 77305 | Oil Operator | Sep 2025 |
| 2191 | Startex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 2192 | Stasney Well Service, LLC | Albany, TX 76430 | Oil & Gas Operator | Sep 2025 |
| 2193 | Stasney, H. R. & Sons, LTD. | Albany, TX 76430 | Oil & Gas Operator | Sep 2025 |
| 2194 | State Energy & Investment Inc. | | Oil & Gas Operator | Mar 1990 |
| 2195 | State Lands Commission | | Oil & Gas Operator | Jun 2025 |
| 2196 | State Line Exploration, LLC | | Oil & Gas Operator | Dec 2024 |
| 2197 | State Line Vacuum Services, LLC | | Oil Operator | Mar 2021 |
| 2198 | State Oil Company | | Oil & Gas Operator | Mar 2006 |
| 2199 | States Exploration Inc | | Oil Operator | Jul 1985 |
| 2200 | Stateside Energy Group LLC | North Miami Beach, FL 33435 | Oil & Gas Operator | Dec 2024 |