| 5501 | Schonfield Harold Gene | Bristow, OK 74010 | Oil Operator | Mar 2015 |
| 5502 | Schonwald Supply Company | Oklahoma City, OK 73101-1571 | Oil & Gas Operator | May 1999 |
| 5503 | Schooley Keith A | Enid, OK 73702-0767 | Oil Operator | May 2006 |
| 5504 | Schrader Lawayne | Fort Worth, TX 76135 | Oil Operator | Mar 2019 |
| 5505 | Schroeder Donald C | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 5506 | Schuler Jr Chris C | Cleveland, OK 74020 | Oil Operator | Aug 2013 |
| 5507 | Schuler Oil Properties LLC | Cleveland, OK 74020 | Oil Operator | Feb 2025 |
| 5508 | Scissortail Energy LLC | Tulsa, OK 74137-3644 | Oil & Gas Operator | Feb 2015 |
| 5509 | Scissortail Exploration And Production LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 5510 | Scoggins Production Company | Cleo Springs, OK 73729-9732 | Oil & Gas Operator | May 2022 |
| 5511 | Scoggins Production LLC | Enid, OK 73703-3002 | Oil & Gas Operator | Feb 2025 |
| 5512 | Scope Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2009 |
| 5513 | Scott Banes Scott Family Partnership | | Oil Operator | Dec 2024 |
| 5514 | Scott Chas W | | Oil & Gas Operator | Jan 1999 |
| 5515 | Scott Petroleum, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 1995 |
| 5516 | Scott SR Kermit | Okarche, OK 73762 | Oil & Gas Operator | Mar 2015 |
| 5517 | Scott Wayne Oil Co | Haxton, CO 80731 | Oil & Gas Operator | Apr 2020 |
| 5518 | Scout Energy Corporation | Edmond, OK 73083-1348 | Oil & Gas Operator | Jan 2025 |
| 5519 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2025 |
| 5520 | SCS Newton Oil LLC | Perryton, TX 79070 | Oil & Gas Operator | Apr 2025 |
| 5521 | Scurlock Oil Co | Houston, TX 77210 | Oil Operator | May 1997 |
| 5522 | Seaboard Gas Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 1999 |
| 5523 | Seabren Gas System Inc | Okla City, OK 73112 | Oil & Gas Operator | Mar 2016 |
| 5524 | Seagrove Resources LLC | Malakoff, TX 75148 | Oil & Gas Operator | Jan 2025 |
| 5525 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 5526 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5527 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5528 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 5529 | Seahawk Oil International Inc | Newport Beach, CA 92660 | Oil & Gas Operator | Oct 1997 |
| 5530 | Seal Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2006 |
| 5531 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 5532 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 5533 | Seals Well Service | | Oil Operator | Jul 2001 |
| 5534 | Sean M Sharp LLC | Chalk Hill, PA 15421 | Oil & Gas Operator | Jan 2025 |
| 5535 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Jan 2025 |
| 5536 | Search Drilling Company | Houston, TX 77010 | Oil & Gas Operator | Feb 2001 |
| 5537 | Searcy Brothers Inc | Tulsa, OK 74135-0433 | Oil Operator | Jun 2004 |
| 5538 | Sears Joe M | Bethany, OK 730084841 | Oil & Gas Operator | May 2013 |
| 5539 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 5540 | Seay Dennis Regan | | Oil Operator | Jan 2001 |
| 5541 | Sebep LLC | Houston, TX 77224-9545 | Gas Operator | Jan 2025 |
| 5542 | Sec Production Inc | Edmond, OK 73013-3709 | Oil & Gas Operator | Feb 2025 |
| 5543 | Sedna Energy LLC | Blanchard, OK 73010-8043 | Gas Operator | Apr 2017 |
| 5544 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 5545 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 5546 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Jan 2025 |
| 5547 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 5548 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 5549 | Sell Drilling Company | Pawhuska, OK 74056 | Oil Operator | Feb 2011 |
| 5550 | Sell Oil Company | Pawhuska, OK 74056 | Oil Operator | Jan 2025 |
| 5551 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 5552 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 5553 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 5554 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 5555 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 5556 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 5557 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 5558 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 5559 | Seminole Oil & Gas Co Inc | Seminole, OK 74868 | Gas Operator | May 2004 |
| 5560 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 5561 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jan 2025 |
| 5562 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 5563 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Jan 2025 |
| 5564 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 5565 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 5566 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 5567 | Senora Oil & Gas Co | | Gas Operator | Aug 2001 |
| 5568 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 5569 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 5570 | Sentinel Transportation LLC | Wilmington, DE 19810 | Oil & Gas Operator | Feb 2025 |
| 5571 | Sequent Exploration Inc | | Oil & Gas Operator | Oct 2017 |
| 5572 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2025 |
| 5573 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Jan 2025 |
| 5574 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 5575 | Service Clearing Corp. | Dallas, TX 75229 | Oil & Gas Operator | Apr 2025 |
| 5576 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 5577 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 5578 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 5579 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 5580 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 5581 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 5582 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | Feb 2025 |
| 5583 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Jan 2025 |
| 5584 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 5585 | Seventy-One Inc | | Oil & Gas Operator | May 1999 |
| 5586 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 5587 | Seymour Oil Co., Inc. | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 5588 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 5589 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Jan 2025 |
| 5590 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Feb 2025 |
| 5591 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 5592 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Apr 2024 |
| 5593 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 5594 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Feb 2025 |
| 5595 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Jan 2025 |
| 5596 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 5597 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 5598 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 5599 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 5600 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |