| 2101 | Spyglass Cedar Creek, LP | | Gas Operator | Jul 2012 |
| 2102 | Spyglass Oil & Gas LLC | | Oil & Gas Operator | Dec 2024 |
| 2103 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 2104 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 2105 | Square One Energy, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Oct 2015 |
| 2106 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 2107 | Squirrel Oil & Gas Inc | Tonkawa, OK 74653 | Oil & Gas Operator | Mar 2022 |
| 2108 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 2109 | SR Production Corp. | Liberty, TX 77575 | Oil & Gas Operator | Mar 2010 |
| 2110 | Sram Oil Incorporated | Winfield, KS 67156 | Oil & Gas Operator | Aug 2005 |
| 2111 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 2112 | SRP Production Corp. | | Oil & Gas Operator | Nov 1997 |
| 2113 | SRS Properties, LLC | Whitehouse, TX 75791 | Oil & Gas Operator | Feb 2026 |
| 2114 | SRV Oil Co | Coleman, TX 76834 | Oil Operator | Feb 2026 |
| 2115 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 2116 | SS Operating LLC | Water Valley, TX 76958 | Oil Operator | Feb 2026 |
| 2117 | SSB Production LC | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2025 |
| 2118 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Feb 2026 |
| 2119 | Ssi Energy LLC | | Oil & Gas Operator | Jul 2021 |
| 2120 | SSM Partnership-PV79 | | Oil Operator | Jun 1989 |
| 2121 | Ssouri Oil Ventures | | Oil Operator | Jan 2022 |
| 2122 | SSS Oil And Gas Inc | Mount Juliet, TN 37122 | Oil & Gas Operator | Dec 2023 |
| 2123 | St Cleric Resources LLC | | Gas Operator | Dec 2025 |
| 2124 | St Croix LTD | Fairlawn, OH 44334 | Oil & Gas Operator | Dec 2022 |
| 2125 | St Croix Operating Inc | | Oil & Gas Operator | Dec 2025 |
| 2126 | St Joe Petroleum U S Corp | | Oil & Gas Operator | Aug 2000 |
| 2127 | St Johns Operating #1 LP | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 2128 | St Joseph Min Co | | Oil Operator | Dec 2023 |
| 2129 | St Michael Exploration | | Oil & Gas Operator | Jun 1987 |
| 2130 | St Oil Company | Denver, CO 80264-2101 | Oil & Gas Operator | Dec 2010 |
| 2131 | St Oil Company LLC | New York, NY 10005-4016 | Oil Operator | Nov 2025 |
| 2132 | St Petroleum, Inc. | Edgerton, KS 66021 | Oil Operator | Sep 2025 |
| 2133 | St. Cajetan Oil Company, LLC | Gainesville, TX 76240 | Oil & Gas Operator | Feb 2026 |
| 2134 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 2135 | St. Clair Oil Co. | St Clairsville, OH 43950 | Oil & Gas Operator | Dec 1997 |
| 2136 | St. Columban'S On The Lake, Inc. | Silver Creek, NY 14136 | Gas Operator | Dec 2024 |
| 2137 | St. Croix Corporation | | Oil & Gas Operator | Apr 1990 |
| 2138 | St. James Oil Corporation | | Oil & Gas Operator | Dec 2009 |
| 2139 | St. Mary Energy Company | Houston, TX 77079 | Oil & Gas Operator | Aug 2008 |
| 2140 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 2141 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 2142 | St. Paul Oil And Gas Corp. | | Oil & Gas Operator | Aug 1991 |
| 2143 | Sta-Kel Incorporated | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 2144 | Staab Alan R | Tulsa, OK 74114-4213 | Oil & Gas Operator | Sep 2010 |
| 2145 | Staab Energy & Leasing | | Oil Operator | Sep 2025 |
| 2146 | Staab Oil Co., A General Partnership | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 2147 | Staats & Martin | | Oil Operator | Aug 2013 |
| 2148 | Staats, William N | | Oil & Gas Operator | Nov 2025 |
| 2149 | Stablerock Energy L.L.C. | Oklahoma City, OK 73106 | Oil & Gas Operator | Feb 2026 |
| 2150 | Stach Enterprises LLC | Nashport, OH 43830 | Oil & Gas Operator | Dec 2021 |
| 2151 | Stacha, Eddy A. | Rice, TX 75155 | Oil & Gas Operator | Feb 2026 |
| 2152 | Stachler William L | Danville, OH 43014 | Oil & Gas Operator | Dec 1989 |
| 2153 | Stack Production | Dewey, OK 74029 | Oil & Gas Operator | Mar 2002 |
| 2154 | Stackhouse Construction Inc | Orwell, OH 44076 | Oil & Gas Operator | Dec 2024 |
| 2155 | Stacy Operating LLC | Cushing, OK 74023 | Oil & Gas Operator | Nov 2025 |
| 2156 | Stacy Reamy | Purdon, TX 76679 | Oil Operator | Feb 2026 |
| 2157 | Stafford, A C | | Oil Operator | Dec 2003 |
| 2158 | Stag Oil Producers Inc | Midland, TX 79701 | Oil & Gas Operator | Jan 1998 |
| 2159 | Stagecoach Pipeline & Storage Company LLC | | Gas Operator | Dec 2005 |
| 2160 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 2161 | Staggered T Oil LLC | Quanah, TX 79252 | Oil Operator | Feb 2026 |
| 2162 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 2163 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Dec 2025 |
| 2164 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Nov 2025 |
| 2165 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 2166 | Stahl & McAbee | Midland, TX 79704 | Gas Operator | Jun 1994 |
| 2167 | Stahl Petroleum Co. | Amarillo, TX 79118 | Oil & Gas Operator | Aug 2003 |
| 2168 | Stal Oil Production, L.L.C. | Argyle, TX 76226 | Oil Operator | Feb 2026 |
| 2169 | Stalcup Oil Comp | | Oil Operator | Dec 1992 |
| 2170 | Stalcup Oil Company | | Oil Operator | Oct 2009 |
| 2171 | Staley Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 2172 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 2173 | Staley, Jack C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 2174 | Stalica, Donald E. | Pavilion, NY 14525 | Gas Operator | Dec 2024 |
| 2175 | Stalking Horse Energy, Limited Liability Company | Houston, TX 77062 | Oil & Gas Operator | Feb 2026 |
| 2176 | Stalking Horse Energy, LLC | Denver, CO 80246 | Oil Operator | Oct 2025 |
| 2177 | Stallings Eugene | | Oil Operator | Jul 1994 |
| 2178 | Stallion Energy LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2009 |
| 2179 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 2180 | Stallion Oil Company | Lafayette, LA 70505 | Oil & Gas Operator | Jun 2004 |
| 2181 | Stallion Oil Corporation | | Oil & Gas Operator | Nov 1987 |
| 2182 | Stallion Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 2183 | Stallion Petroleum Inc | Zanesville, OH 43701-3700 | Oil & Gas Operator | Dec 1996 |
| 2184 | Stalnaker Energy Corporation | | Oil & Gas Operator | Dec 2021 |
| 2185 | Stalnaker Oil Company | Maud, OK 74854-0295 | Oil Operator | May 2017 |
| 2186 | Stalnaker, Fred W. (Mrs) | | Gas Operator | Dec 1996 |
| 2187 | Stalnaker, William K | | Oil & Gas Operator | Dec 2008 |
| 2188 | Stalwart Energy Co | Tulsa, OK 74103-3518 | Oil & Gas Operator | Apr 2014 |
| 2189 | Stamic Oil LLC | Duncan, OK 73534-1898 | Oil & Gas Operator | Oct 2021 |
| 2190 | Stampede Energy Corp. | Canada, 00100 | Oil & Gas Operator | Mar 2000 |
| 2191 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 2192 | Stanco Petroleum Inc | Kimball, NE 69145 | Oil & Gas Operator | Jul 1999 |
| 2193 | Standard Alaska Production Company | | Oil & Gas Operator | Dec 1987 |
| 2194 | Standard Energy Co | Columbus, OH 43229-1174 | Oil & Gas Operator | Dec 2018 |
| 2195 | Standard Gas Co. | Jane Lew, WV 26378-0000 | Gas Operator | Dec 2011 |
| 2196 | Standard Oil Co Of Calif | | Oil & Gas Operator | Dec 1983 |
| 2197 | Standard Oil Co Of WV | Walton, WV 25286 | Oil & Gas Operator | Dec 2024 |
| 2198 | Standard Oil Company, Inc. | Parkesburg, WV 26103 | Oil & Gas Operator | Mar 2022 |
| 2199 | Standard Oil Of Kentucky, Inc | | Oil Operator | Dec 2022 |
| 2200 | Standard Oil Tools, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Feb 2026 |