| 201 | Saglio, Inc. | Clay, WV 25043-0712 | Gas Operator | Dec 2021 |
| 202 | Saguaro Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 203 | Sahara Gas & Exploration, Inc. | | Gas Operator | Mar 2002 |
| 204 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | Sep 2025 |
| 205 | Saiber Michael L & Lora L | Saxonburg, PA 16056 | Oil Operator | Mar 1997 |
| 206 | Saint John Exploration & Production, Inc. | Williamsville, NY 14221 | Oil Operator | Dec 2024 |
| 207 | Saint-Gobain Ceramics & Plastics, Inc. | Buckhannon, WV 26201 | Gas Operator | Dec 2021 |
| 208 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Jun 2025 |
| 209 | Salas-Apache Oil LLC | San Antonio, TX 78227 | Oil Operator | Sep 2025 |
| 210 | Salem Oil LLC | | Oil Operator | Jul 2025 |
| 211 | Salerno, Peter T., Jr. | Clyde, NY 14433 | Gas Operator | Dec 2024 |
| 212 | Salida Exploration, LLC | Abilene, TX 79603 | Oil & Gas Operator | Sep 2025 |
| 213 | Salient Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 214 | Saline Injection Systems Co. | | Oil Operator | Jan 2025 |
| 215 | Saling Oil Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2002 |
| 216 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Jun 2025 |
| 217 | Sally Oil Company | | Oil Operator | Sep 2016 |
| 218 | Salmon, Raymond Jr Estate | Nocona, TX 76255 | Oil Operator | Sep 2025 |
| 219 | Salmon, Raymond, Jr. | Nocona, TX 76255 | Oil & Gas Operator | Sep 2017 |
| 220 | Salona, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 221 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | May 2025 |
| 222 | Salt Creek JT Venture | Pittsburgh, PA 15219-2702 | Oil & Gas Operator | Dec 1986 |
| 223 | Salt Creek Oil Corporation | Irving, TX 75016 | Oil & Gas Operator | Dec 1993 |
| 224 | Salt Creek Operating LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Mar 2020 |
| 225 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Sep 2025 |
| 226 | Salt Creek Resources, LLC | Caney, KS 67333 | Oil Operator | Oct 2019 |
| 227 | Salt Creek West Partners | | Oil Operator | Jul 1995 |
| 228 | Salt Fork Produc | | Oil Operator | Oct 1987 |
| 229 | Salt Fork Producers Inc | Pond Creek, OK 73766 | Oil & Gas Operator | Jan 1995 |
| 230 | Salt Of The Earth Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Sep 2025 |
| 231 | Salty Dog Disposal LLC | Cement, OK 73017 | Oil Operator | Jun 2025 |
| 232 | Salty Lime Energy, LLC | Ovalo, TX 79541 | Oil Operator | Sep 2025 |
| 233 | Salvador Oil, LLC | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |
| 234 | Sam Aertker | | Oil Operator | Jul 1992 |
| 235 | Sam Jones & Assoc Prod Div Inc | | Oil & Gas Operator | Feb 1999 |
| 236 | Sam K VIersen | Okmulgee, OK 74447 | Oil & Gas Operator | Jun 1996 |
| 237 | Sam Koehler Enterprises, Inc. | Andover, NY 14806 | Oil & Gas Operator | Dec 2024 |
| 238 | Sam Myers | | Oil & Gas Operator | Nov 1988 |
| 239 | Sam R. Brown | | Oil Operator | Mar 1987 |
| 240 | Sam Spears, Jr. | | Oil & Gas Operator | Sep 1998 |
| 241 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 242 | Samantha Petroleum Corp. | | Oil & Gas Operator | Apr 1987 |
| 243 | Samco | Whitesboro, TX 76273 | Oil & Gas Operator | Aug 2013 |
| 244 | Samco Investments | | Oil Operator | Feb 2025 |
| 245 | Samco Oil & Gas Co. | Granbury, TX 76048 | Gas Operator | Feb 2002 |
| 246 | Samedan Energy Development Cor | | Oil & Gas Operator | Feb 1987 |
| 247 | Samedan Oil Corp. -Offshore Div. | Houston, TX 77067 | Oil & Gas Operator | Dec 2002 |
| 248 | Samedan Oil Corp. Et Al | | Oil & Gas Operator | Jan 1989 |
| 249 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 250 | Samhill LLC | Tonkawa, OK 74653-5533 | Oil & Gas Operator | May 2025 |
| 251 | Samis Oil Company, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2000 |
| 252 | Sammax Operating LLC | Snyder, TX 79549 | Oil Operator | Sep 2025 |
| 253 | Sammy D. Thrash | | Oil & Gas Operator | May 2012 |
| 254 | Sammy D. Thrash, LLC | | Oil & Gas Operator | May 2019 |
| 255 | Sample Exploration | | Oil & Gas Operator | Jul 2002 |
| 256 | Samples James F | Brinkhaven, OH 43006 | Oil & Gas Operator | Dec 2021 |
| 257 | Sampson Operators | | Oil & Gas Operator | Jun 2025 |
| 258 | Sampson, Lowell | | Oil & Gas Operator | Dec 2001 |
| 259 | Sams Energy, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1998 |
| 260 | Samson Contour Energy E&P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2017 |
| 261 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Jul 2025 |
| 262 | Samson Gas Producing Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 263 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 264 | Samson Kelley Operating Co., LTD. | | Oil & Gas Operator | Feb 2004 |
| 265 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 266 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 267 | Samson Natural Gas Co | | Oil & Gas Operator | Oct 1992 |
| 268 | Samson Natural Gas Co And Miller Energy Miller Oil | | Oil & Gas Operator | Aug 2000 |
| 269 | Samson Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 270 | Samson Oil Company | | Oil & Gas Operator | Feb 2001 |
| 271 | Samson Properties, Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2008 |
| 272 | Samson Res Co | Tulsa, OK 74103-3103 | Gas Operator | Jan 2015 |
| 273 | Samson Resources | | Oil Operator | Jan 1994 |
| 274 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 275 | Samson Resources Company LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2021 |
| 276 | Samuel Dale Hughes Dba Hughes Drilling Co. | Artesia, NM 88211026 | Oil Operator | Jun 2025 |
| 277 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 278 | Samuel Gary Jr. And Assoc., Inc. | | Oil & Gas Operator | Mar 2023 |
| 279 | Samuel Jackson Production Co | | Oil Operator | Apr 2025 |
| 280 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 281 | Samuelson, Peter Philip | Bemus Point, NY 14712 | Gas Operator | Dec 2024 |
| 282 | Samurai Operating Co. L.L.C. | Dayton, TX 77535 | Oil & Gas Operator | Sep 2025 |
| 283 | San Angelo Cetco, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Mar 1998 |
| 284 | San Antonio Gas & Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2000 |
| 285 | San Cajo Oil Company | Edmonds, WA 98020 | Oil & Gas Operator | Sep 2025 |
| 286 | San Carlos Oil & Gas Corp. | | Gas Operator | Dec 2003 |
| 287 | San Dia Producing Company | Deanville, TX 77852 | Oil & Gas Operator | Sep 2025 |
| 288 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 289 | San Isidro Development Co, L. C. | Sandia, TX 78383 | Oil & Gas Operator | Sep 2025 |
| 290 | San Joaquin Facilities Management Inc. | | Oil & Gas Operator | Jul 2025 |
| 291 | San Juan Minerals Explor | Mexican Hat, UT 84531 | Oil & Gas Operator | Apr 2006 |
| 292 | San Juan Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 293 | San Juan Services, Inc. | Farmington, NM 87402 | Oil Operator | Dec 2011 |
| 294 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jun 2025 |
| 295 | San Miguel Oil & Gas, Inc. | | Oil & Gas Operator | Jan 1993 |
| 296 | San Patricio Corporation | Dinero, TX 78350 | Oil & Gas Operator | Sep 2003 |
| 297 | San Pet Inc | McPherson, KS 67460 | Oil Operator | May 1997 |
| 298 | San Saba Energy | Hays, KS 67601 | Oil Operator | May 1998 |
| 299 | Sananco Energy C | | Oil Operator | Aug 1987 |
| 300 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |