| 5301 | Schonwald Supply Company | Oklahoma City, OK 73101-1571 | Oil & Gas Operator | May 1999 |
| 5302 | Schooley Keith A | Enid, OK 73702-0767 | Oil Operator | May 2006 |
| 5303 | Schrader Lawayne | Fort Worth, TX 76135 | Oil Operator | Mar 2019 |
| 5304 | Schroeder, Donald C | | Oil & Gas Operator | Dec 2025 |
| 5305 | Schuler Jr Chris C | Cleveland, OK 74020 | Oil Operator | Aug 2013 |
| 5306 | Schuler Oil Properties LLC | Cleveland, OK 74020 | Oil Operator | Nov 2025 |
| 5307 | Scissortail Energy LLC | Tulsa, OK 74137-3644 | Oil & Gas Operator | Jan 2026 |
| 5308 | Scissortail Exploration And Production LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 5309 | Scoggins Production Company | Cleo Springs, OK 73729-9732 | Oil & Gas Operator | May 2022 |
| 5310 | Scoggins Production LLC | Enid, OK 73703-3002 | Oil & Gas Operator | Jan 2026 |
| 5311 | Scott Banes Scott Family Partnership | | Oil Operator | Nov 2025 |
| 5312 | Scott John S | Copan, OK 74022-5904 | Oil Operator | Apr 2005 |
| 5313 | Scott Petroleum, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 1995 |
| 5314 | Scott SR Kermit | Okarche, OK 73762 | Oil & Gas Operator | Mar 2015 |
| 5315 | Scott Wayne Oil Co | Haxton, CO 80731 | Oil & Gas Operator | Apr 2020 |
| 5316 | Scout Energy Corporation | Edmond, OK 73083-1348 | Oil & Gas Operator | Dec 2025 |
| 5317 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2026 |
| 5318 | SCS Newton Oil LLC | Perryton, TX 79070 | Oil & Gas Operator | Mar 2026 |
| 5319 | Seaboard Gas Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 1999 |
| 5320 | Seagrove Resources LLC | Malakoff, TX 75148 | Oil & Gas Operator | Dec 2025 |
| 5321 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 5322 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5323 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5324 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 5325 | Seahawk Oil International Inc | Newport Beach, CA 92660 | Oil & Gas Operator | Oct 1997 |
| 5326 | Seal Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2006 |
| 5327 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 5328 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 5329 | Sean M Sharp LLC | Chalk Hill, PA 15421 | Oil & Gas Operator | Oct 2025 |
| 5330 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Dec 2025 |
| 5331 | Search Drilling Company | Houston, TX 77010 | Oil & Gas Operator | Feb 2001 |
| 5332 | Searcy Brothers Inc | Tulsa, OK 74135-0433 | Oil Operator | Jun 2004 |
| 5333 | Sears Joe M | Bethany, OK 730084841 | Oil & Gas Operator | May 2013 |
| 5334 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 5335 | Seay Dennis Regan | | Oil Operator | Jan 2001 |
| 5336 | Sec Production Inc | Edmond, OK 73013-3709 | Oil & Gas Operator | Jan 2026 |
| 5337 | Sedna Energy LLC | Blanchard, OK 73010-8043 | Gas Operator | Apr 2017 |
| 5338 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2026 |
| 5339 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 5340 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Jan 2026 |
| 5341 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 5342 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 5343 | Select Water Solutions, LLC | Gainesville, TX 76240 | Oil Operator | Dec 2025 |
| 5344 | Sell Drilling LLC | | Oil Operator | Feb 2011 |
| 5345 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 5346 | Sell, David E | | Oil Operator | Dec 2025 |
| 5347 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 5348 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2025 |
| 5349 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 5350 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 5351 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 5352 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 5353 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 5354 | Seminole Oil & Gas Co Inc | Seminole, OK 74868 | Gas Operator | May 2004 |
| 5355 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 5356 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Dec 2025 |
| 5357 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 5358 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Dec 2025 |
| 5359 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 5360 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 5361 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 5362 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 5363 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 5364 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2026 |
| 5365 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Dec 2025 |
| 5366 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 5367 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Mar 2026 |
| 5368 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 5369 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 5370 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 5371 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 5372 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 5373 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 5374 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | Jan 2026 |
| 5375 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Sep 2025 |
| 5376 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 5377 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 5378 | Seymour Oil Co Inc | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 5379 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 5380 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Dec 2025 |
| 5381 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jan 2026 |
| 5382 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 5383 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 5384 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 5385 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Jan 2026 |
| 5386 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Dec 2025 |
| 5387 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 5388 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 5389 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 5390 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 5391 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 5392 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 5393 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 5394 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 5395 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 5396 | Shattuck SWD LLC | Shattuck, OK 73858-0848 | Oil Operator | Mar 2022 |
| 5397 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 5398 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 5399 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Mar 2026 |
| 5400 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Dec 2025 |