| 201 | Seventy-One Inc | | Oil & Gas Operator | May 1999 |
| 202 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 203 | Seymour Oil Co., Inc. | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 204 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 205 | Shadowpeak Operating LLC | | Oil & Gas Operator | Feb 2024 |
| 206 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Mar 2024 |
| 207 | Shale Properties LLC | | Oil Operator | Aug 2023 |
| 208 | Shallow Energy Inc | South Dennis, MA 02660-2028 | Oil & Gas Operator | Jan 2024 |
| 209 | Shamrock Operating Company LLC | | Oil Operator | Aug 2022 |
| 210 | Shamrock Well Operations LLC | | Oil & Gas Operator | Mar 2024 |
| 211 | Shanks Drilling & Production Company LLC | Leonard, OK 74043-0038 | Oil & Gas Operator | Aug 2023 |
| 212 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 213 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 214 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 215 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 216 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 217 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 218 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 219 | Sharber Production Inc | Seminole, OK 74868-0581 | Oil & Gas Operator | Oct 2023 |
| 220 | Sharon Oil Company Inc | | Oil Operator | Aug 1997 |
| 221 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 222 | Shattuck SWD LLC | | Oil Operator | Mar 2022 |
| 223 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 224 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 225 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | May 2024 |
| 226 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Dec 2023 |
| 227 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 228 | Sheets George M & Judith A | Tonkawa, OK 74653 | Oil & Gas Operator | Feb 2024 |
| 229 | Shelburne Oil Company | Oklahoma City, OK 73116-7639 | Gas Operator | Feb 2020 |
| 230 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 231 | Shell Trading Us Company | Houston, TX 77210 | Oil & Gas Operator | Feb 2024 |
| 232 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 233 | Shelly Energy Inc. | Berwyn, PA 19312 | Oil & Gas Operator | Mar 2024 |
| 234 | Shelter Petroleum,Inc | | Oil & Gas Operator | Jun 2014 |
| 235 | Shelton Alec & Glenda | Kiefer, OK 74041-0399 | Oil & Gas Operator | Sep 2023 |
| 236 | Shelton Dempsey L | Glenpool, OK 74033 | Oil & Gas Operator | Dec 2018 |
| 237 | Shelton Dempsey W | Tulsa, OK 74119-4036 | Oil & Gas Operator | Mar 2015 |
| 238 | Shelton Oil Company LLC | | Oil Operator | Feb 2024 |
| 239 | Shelton Oil Resources LLC | Tulsa, OK 74107-4874 | Oil & Gas Operator | Feb 2024 |
| 240 | Shelton Resources Inc | Tulsa, OK 74119-4036 | Oil & Gas Operator | Feb 2008 |
| 241 | Shepard James | Beggs, OK 74421-0899 | Oil & Gas Operator | Feb 2024 |
| 242 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2024 |
| 243 | Sherman Larry Oil Company | Chandler, OK 74834-0071 | Oil & Gas Operator | Mar 2015 |
| 244 | Sherman Oil & Gas Co Inc | Chandler, OK 74834-0571 | Oil & Gas Operator | Apr 2020 |
| 245 | Sherman Oil & Gas LLC | Chandler, OK 74834-0571 | Oil & Gas Operator | Feb 2024 |
| 246 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 247 | Sherry'S Oil Company | Terral, OK 73569 | Oil Operator | Oct 2000 |
| 248 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 249 | Shideler Enterprises Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Feb 2019 |
| 250 | Shidler Well Service | Vinita, OK 74301-5468 | Oil Operator | Dec 2000 |
| 251 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | May 2024 |
| 252 | Shield Operating Co. | Georgetown, TX 78627 | Oil & Gas Operator | Aug 2003 |
| 253 | Shields Cooper | Bonita Springs, FL 34135-3421 | Oil & Gas Operator | Jan 2011 |
| 254 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Feb 2024 |
| 255 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 256 | Shields VIrginia | Kellyville, OK 74039-0181 | Oil & Gas Operator | Feb 2024 |
| 257 | Shields Well Service Corp | Stroud, OK 74079-3410 | Oil & Gas Operator | Dec 2017 |
| 258 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034-0033 | Oil Operator | Feb 2024 |
| 259 | Sho-Bar Energy, Inc. | Harper, KS 67058 | Oil & Gas Operator | Feb 2024 |
| 260 | Shockley Jimmie D | Morris, OK 74445-2754 | Oil Operator | Jul 2023 |
| 261 | Shoreline Operating LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | Mar 2024 |
| 262 | Short Oil Co | Luling, TX 78648 | Oil & Gas Operator | Feb 2024 |
| 263 | Short W D Oil Company LLC | | Oil Operator | Feb 2024 |
| 264 | Short W D Revocable Trust | Oxford, KS 67119-0729 | Oil & Gas Operator | Mar 2015 |
| 265 | Shoshone Oil And Gas Inc | Lindsay, OK 73052-0217 | Oil & Gas Operator | Jan 2020 |
| 266 | Shriver Earl J | Lawton, OK 73507-5851 | Oil & Gas Operator | Aug 2013 |
| 267 | Shriver Operating LLC | Lawton, OK 73507-5851 | Oil & Gas Operator | Feb 2024 |
| 268 | Sicko Jaquetta Len | Muldoon, TX 78949 | Oil Operator | Nov 2023 |
| 269 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 270 | Siegfried R H Inc | Tulsa, OK 74104 | Oil & Gas Operator | Mar 2008 |
| 271 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2024 |
| 272 | Signal Hill Expl & Pet Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2015 |
| 273 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 274 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 275 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 276 | Silent Stone Energy LLC | | Oil & Gas Operator | Feb 2024 |
| 277 | Sills Oil Co | Osage, OK 74054 | Oil Operator | Aug 2023 |
| 278 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | May 2024 |
| 279 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 280 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Feb 2024 |
| 281 | Silver Star Of Nevada Inc | | Oil & Gas Operator | Feb 2024 |
| 282 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Feb 2024 |
| 283 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 284 | Silverridge Corp | Van Buren, AR 72956 | Oil & Gas Operator | Mar 2015 |
| 285 | Silvertin Farm Production LLC | | Oil & Gas Operator | Apr 2020 |
| 286 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |
| 287 | Simco Operating | Shawnee, OK 74804-2501 | Oil Operator | Jan 2013 |
| 288 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 289 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 290 | Simmons Evelyn B-Per Represent | Edmond, OK 73083-3610 | Oil & Gas Operator | Aug 1996 |
| 291 | Simmons Mack McCoy | Cement, OK 73017-0424 | Oil Operator | Mar 2024 |
| 292 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 293 | Simon Joseph W | Carney, OK 74832-0443 | Oil & Gas Operator | Dec 2016 |
| 294 | Simon Oil Company | Ardmore, OK 73401-1045 | Oil Operator | Aug 2023 |
| 295 | Simon Royce & Joyce | Tecumseh, OK 74873-7341 | Oil Operator | Jun 2018 |
| 296 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 297 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | May 2024 |
| 298 | Singer Fleischaker Oil Op. Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 299 | Singer Joseph B Expl Co | Oklahoma City, OK 73118-7486 | Oil & Gas Operator | Mar 1993 |
| 300 | Singer Oil Co LLC | Hennessey, OK 73742-0307 | Oil & Gas Operator | Mar 2024 |