| 5301 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 5302 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jul 2025 |
| 5303 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | May 2025 |
| 5304 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 5305 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Oct 2025 |
| 5306 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 5307 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 5308 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 5309 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 5310 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 5311 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 5312 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | Jul 2025 |
| 5313 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Jun 2025 |
| 5314 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 5315 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 5316 | Seymour Oil Co., Inc. | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 5317 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 5318 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Jun 2025 |
| 5319 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jul 2025 |
| 5320 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 5321 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 5322 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 5323 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Jun 2025 |
| 5324 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Jun 2025 |
| 5325 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 5326 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 5327 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 5328 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 5329 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 5330 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 5331 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 5332 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 5333 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 5334 | Shattuck SWD LLC | Shattuck, OK 73858-0848 | Oil Operator | Mar 2022 |
| 5335 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 5336 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 5337 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Oct 2025 |
| 5338 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Oct 2024 |
| 5339 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 5340 | Shebester Inc | Maysville, OK 73057 | Oil & Gas Operator | Nov 1998 |
| 5341 | Sheets George M & Judith A | Tonkawa, OK 74653 | Oil & Gas Operator | Jun 2025 |
| 5342 | Shelburne Oil Company | Oklahoma City, OK 73116-7639 | Gas Operator | Feb 2020 |
| 5343 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 5344 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 5345 | Shelly Energy Inc. | Berwyn, PA 19312 | Oil & Gas Operator | Jul 2025 |
| 5346 | Shelter Petroleum,Inc | | Oil & Gas Operator | Jun 2014 |
| 5347 | Shelton Alec & Glenda | Kiefer, OK 74041 | Oil & Gas Operator | May 2025 |
| 5348 | Shelton Brothers | Okmulgee, OK 74447-6110 | Oil & Gas Operator | Apr 2020 |
| 5349 | Shelton Dempsey L | Glenpool, OK 74033 | Oil & Gas Operator | Dec 2018 |
| 5350 | Shelton Dempsey W | Tulsa, OK 74119-4036 | Oil & Gas Operator | Mar 2015 |
| 5351 | Shelton Oil Company LLC | Collinsville, OK 74021-5619 | Oil Operator | Jun 2025 |
| 5352 | Shelton Oil Resources LLC | Tulsa, OK 74107-4874 | Oil & Gas Operator | Jun 2025 |
| 5353 | Shelton Resources Inc | Tulsa, OK 74119-4036 | Oil & Gas Operator | Feb 2008 |
| 5354 | Shepard James | Beggs, OK 74421 | Oil & Gas Operator | Feb 2024 |
| 5355 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 5356 | Sherman Larry Oil Company | Chandler, OK 74834 | Oil & Gas Operator | Mar 2015 |
| 5357 | Sherman Oil & Gas Co Inc | Chandler, OK 74834-0571 | Oil & Gas Operator | Apr 2020 |
| 5358 | Sherman Oil & Gas, L.L.C. | Chandler, OK 74834 | Oil & Gas Operator | Jul 2025 |
| 5359 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 5360 | Sherry'S Oil Company | Terral, OK 73569 | Oil Operator | Oct 2000 |
| 5361 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 5362 | Shideler Enterprises Inc | Drumright, OK 74030 | Oil & Gas Operator | Feb 2019 |
| 5363 | Shidler Well Service | Vinita, OK 74301-5468 | Oil Operator | Dec 2000 |
| 5364 | Shield Operating Co. | Georgetown, TX 78627 | Oil & Gas Operator | Aug 2003 |
| 5365 | Shields Cooper | Bonita Springs, FL 34135-3421 | Oil & Gas Operator | Jan 2011 |
| 5366 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Jun 2025 |
| 5367 | Shields Operating, Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 5368 | Shields VIrginia | Kellyville, OK 74039 | Oil & Gas Operator | Jun 2025 |
| 5369 | Shields Well Service Corp | Stroud, OK 74079-3410 | Oil & Gas Operator | Dec 2017 |
| 5370 | Shiloh E Hall | Okmulgee, OK 74447 | Oil Operator | Jul 2025 |
| 5371 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034 | Oil Operator | May 2025 |
| 5372 | Sho-Bar Energy, Inc. | Harper, KS 67058 | Oil & Gas Operator | May 2025 |
| 5373 | Shockley Jimmie D | Morris, OK 74445-2754 | Oil Operator | Jul 2025 |
| 5374 | Shofner Oil Company | Chushing,, OK 74023 | Oil & Gas Operator | Feb 2003 |
| 5375 | Shoreline Operating LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2025 |
| 5376 | Short Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jun 2025 |
| 5377 | Short W D Oil Company LLC | Oxford, KS 67119-0729 | Oil Operator | Jun 2025 |
| 5378 | Short W D Revocable Trust | Oxford, KS 67119-0729 | Oil & Gas Operator | Mar 2015 |
| 5379 | Shortgrass Petroleum Inc | Laverne, OK 73848-0139 | Oil & Gas Operator | Jun 2025 |
| 5380 | Shoshone Oil And Gas Inc | Lindsay, OK 73052-0217 | Oil & Gas Operator | Jan 2020 |
| 5381 | Shriver Earl J | Lawton, OK 73507-5851 | Oil & Gas Operator | Aug 2013 |
| 5382 | Shriver Operating LLC | Lawton, OK 73507-5851 | Oil & Gas Operator | Apr 2025 |
| 5383 | Sicko Jaquetta Len | Muldoon, TX 78949 | Oil Operator | Feb 2025 |
| 5384 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 5385 | Siegfried R H Inc | Tulsa, OK 74104 | Oil & Gas Operator | Mar 2008 |
| 5386 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Aug 2025 |
| 5387 | Signal Hill Expl & Pet Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2015 |
| 5388 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 5389 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 5390 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 5391 | Silent Stone Energy LLC | | Oil & Gas Operator | Jun 2025 |
| 5392 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Oct 2025 |
| 5393 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 5394 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | May 2025 |
| 5395 | Silver Star Of Nevada Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2025 |
| 5396 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Jun 2025 |
| 5397 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 5398 | Silverridge Corp | Van Buren, AR 72956 | Oil & Gas Operator | Mar 2015 |
| 5399 | Silvertin Farm Production LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2020 |
| 5400 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |