| 5301 | Search Drilling Company | Houston, TX 77010 | Oil & Gas Operator | Feb 2001 |
| 5302 | Searcy Brothers Inc | Tulsa, OK 74135-0433 | Oil Operator | Jun 2004 |
| 5303 | Sears Joe M | Bethany, OK 730084841 | Oil & Gas Operator | May 2013 |
| 5304 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 5305 | Seay Dennis Regan | | Oil Operator | Jan 2001 |
| 5306 | Sec Production Inc | Edmond, OK 73013-3709 | Oil & Gas Operator | Sep 2025 |
| 5307 | Sedna Energy LLC | Blanchard, OK 73010-8043 | Gas Operator | Apr 2017 |
| 5308 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 5309 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 5310 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Sep 2025 |
| 5311 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 5312 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 5313 | Select Water Solutions, LLC | Gainesville, TX 76240 | Oil Operator | Aug 2025 |
| 5314 | Sell Drilling LLC | | Oil Operator | Feb 2011 |
| 5315 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 5316 | Sell, David E | | Oil Operator | Aug 2025 |
| 5317 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 5318 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Aug 2025 |
| 5319 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 5320 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 5321 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 5322 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 5323 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 5324 | Seminole Oil & Gas Co Inc | Seminole, OK 74868 | Gas Operator | May 2004 |
| 5325 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 5326 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Aug 2025 |
| 5327 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 5328 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Aug 2025 |
| 5329 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 5330 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 5331 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 5332 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 5333 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 5334 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 5335 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Aug 2025 |
| 5336 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 5337 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Dec 2025 |
| 5338 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 5339 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 5340 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 5341 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 5342 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 5343 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 5344 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | Sep 2025 |
| 5345 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Jun 2025 |
| 5346 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 5347 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 5348 | Seymour Oil Co Inc | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 5349 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 5350 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Aug 2025 |
| 5351 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Sep 2025 |
| 5352 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 5353 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 5354 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 5355 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Sep 2025 |
| 5356 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2025 |
| 5357 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 5358 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 5359 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 5360 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 5361 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 5362 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 5363 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 5364 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 5365 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 5366 | Shattuck SWD LLC | Shattuck, OK 73858-0848 | Oil Operator | Mar 2022 |
| 5367 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 5368 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 5369 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Dec 2025 |
| 5370 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Oct 2024 |
| 5371 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 5372 | Shebester Inc | Maysville, OK 73057 | Oil & Gas Operator | Nov 1998 |
| 5373 | Sheets George M & Judith A | Tonkawa, OK 74653 | Oil & Gas Operator | Aug 2025 |
| 5374 | Shelburne Oil Company | Oklahoma City, OK 73116-7639 | Gas Operator | Feb 2020 |
| 5375 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 5376 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 5377 | Shelly Energy Inc | Berwyn, PA 19312 | Oil & Gas Operator | Sep 2025 |
| 5378 | Shelter Petroleum,Inc | | Oil & Gas Operator | Jun 2014 |
| 5379 | Shelton Alec & Glenda | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 5380 | Shelton Brothers | Okmulgee, OK 74447-6110 | Oil & Gas Operator | Apr 2020 |
| 5381 | Shelton Dempsey L | Glenpool, OK 74033 | Oil & Gas Operator | Dec 2018 |
| 5382 | Shelton Dempsey W | Tulsa, OK 74119-4036 | Oil & Gas Operator | Mar 2015 |
| 5383 | Shelton Oil Company LLC | Collinsville, OK 74021-5619 | Oil Operator | Aug 2025 |
| 5384 | Shelton Oil Resources LLC | Tulsa, OK 74107-4874 | Oil & Gas Operator | Aug 2025 |
| 5385 | Shelton Resources Inc | Tulsa, OK 74119-4036 | Oil & Gas Operator | Feb 2008 |
| 5386 | Shepard James | Beggs, OK 74421 | Oil & Gas Operator | Feb 2024 |
| 5387 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Aug 2025 |
| 5388 | Sherman Larry Oil Company | Chandler, OK 74834 | Oil & Gas Operator | Mar 2015 |
| 5389 | Sherman Oil & Gas Co Inc | Chandler, OK 74834-0571 | Oil & Gas Operator | Apr 2020 |
| 5390 | Sherman Oil & Gas, L.L.C. | Chandler, OK 74834 | Oil & Gas Operator | Sep 2025 |
| 5391 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 5392 | Sherry'S Oil Company | Terral, OK 73569 | Oil Operator | Oct 2000 |
| 5393 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 5394 | Shideler Enterprises Inc | Drumright, OK 74030 | Oil & Gas Operator | Feb 2019 |
| 5395 | Shidler Well Service | Vinita, OK 74301-5468 | Oil Operator | Dec 2000 |
| 5396 | Shield Operating Co. | Georgetown, TX 78627 | Oil & Gas Operator | Aug 2003 |
| 5397 | Shields Cooper | Bonita Springs, FL 34135-3421 | Oil & Gas Operator | Jan 2011 |
| 5398 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Aug 2025 |
| 5399 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 5400 | Shields VIrginia | Kellyville, OK 74039 | Oil & Gas Operator | Sep 2025 |