| 601 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 602 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 603 | Pullers Oil Company LLC | Blackwell, OK 74631-0323 | Oil & Gas Operator | Feb 2024 |
| 604 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 605 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Jan 2024 |
| 606 | Quanah Company | Tulsa, OK 74159-0469 | Oil & Gas Operator | May 2020 |
| 607 | Questar Energy Trading | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2020 |
| 608 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 609 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 610 | R & D Oil & Gas | Exeter, CA 93221-9697 | Oil & Gas Operator | Aug 2019 |
| 611 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2024 |
| 612 | Rainbow Oil & Gas | Pawhuska, OK 74056-0056 | Oil Operator | Oct 2010 |
| 613 | Rainbow Oil & Gas LLC | Coolville, OH 45723 | Oil & Gas Operator | May 2023 |
| 614 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 615 | Ramey L E SR | Mounds, OK 74047 | Oil Operator | Jan 2000 |
| 616 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 617 | Raper Brice Oil Company LLC | Yale, OK 74085-6865 | Oil & Gas Operator | Apr 2015 |
| 618 | Ratex Resources Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2000 |
| 619 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 620 | RCK Oil And Gas LLC | | Oil & Gas Operator | Feb 2024 |
| 621 | Rebel Oil Company | Keaton, KY 41226 | Oil & Gas Operator | Jan 2024 |
| 622 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 623 | Red Fork (USA) Investments Inc | Midland, TX 79710-0272 | Oil & Gas Operator | May 2019 |
| 624 | Red Fork Oil Production Inc | Mannford, OK 74044-0492 | Oil & Gas Operator | Feb 2017 |
| 625 | Red Fork Valley Oil & Gas Co | Cushing, OK 74023 | Oil Operator | Dec 2014 |
| 626 | Red Hawk Disposal LLC | | Oil Operator | Jun 2023 |
| 627 | Red Rocks Oil & Gas Operating LLC | | Oil & Gas Operator | Feb 2024 |
| 628 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | Feb 2024 |
| 629 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 630 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 631 | Renegade Oil And Gas LLC | | Oil & Gas Operator | Dec 2019 |
| 632 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jan 2024 |
| 633 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 634 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 635 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |
| 636 | Rhoads Mark Operations | Ponca City, OK 74604 | Oil & Gas Operator | May 2006 |
| 637 | Rhodes-Fielding Corporation | Edmond, OK 73083-6634 | Oil & Gas Operator | Jan 2024 |
| 638 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 639 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Jan 2024 |
| 640 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 641 | Rockbridge Petroleum LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2009 |
| 642 | Rocky Top Energy LLC | | Oil & Gas Operator | Dec 2023 |
| 643 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 644 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 645 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Jul 2023 |
| 646 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 647 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 648 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 649 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 650 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 651 | Ruh Oil Company | Owasso, OK 74055-0841 | Oil & Gas Operator | Dec 2023 |
| 652 | S & C Resources Inc | Cleveland, OK 74020-0604 | Oil Operator | Jan 2024 |
| 653 | S & M Production Inc | Pawnee, OK 74058-4516 | Oil & Gas Operator | Aug 2023 |
| 654 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 2024 |
| 655 | S T Industries Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2011 |
| 656 | Salty Dog Disposal LLC | | Oil Operator | Mar 2024 |
| 657 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 658 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Jan 2024 |
| 659 | Sand Resources LLC | Norman, OK 73072-4805 | Oil & Gas Operator | Aug 2012 |
| 660 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 661 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 662 | Santa Fe Energy Operating Partner LP | Midland, TX 79701 | Oil & Gas Operator | Sep 2004 |
| 663 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 664 | Sasser Company Inc (The) | Perkins, OK 74059-0515 | Oil & Gas Operator | Jan 2024 |
| 665 | Scavenger Oil Co., Inc. | Englewood, CO 80111 | Oil & Gas Operator | Mar 2000 |
| 666 | Schooley Keith A | Enid, OK 73702-0767 | Oil Operator | May 2006 |
| 667 | Schuler Oil Properties LLC | Cleveland, OK 74020-0798 | Oil Operator | Feb 2024 |
| 668 | Scissortail Energy LLC | Tulsa, OK 74137-3644 | Oil & Gas Operator | Feb 2015 |
| 669 | Seagrove Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 670 | Selco Oil And Gas Inc | Danville, CA 94526-7638 | Oil & Gas Operator | Jan 2024 |
| 671 | Sellers Jack B Estate Of | Cleveland, OK 74020-0034 | Oil & Gas Operator | Jan 2024 |
| 672 | Sellers Mark A | Drumright, OK 74030-0443 | Oil & Gas Operator | Mar 2020 |
| 673 | Sentinel Transportation LLC | | Oil & Gas Operator | Feb 2024 |
| 674 | Sequoyah Energy Holdings LLC | | Oil & Gas Operator | Feb 2024 |
| 675 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 676 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 677 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 678 | Shamrock Well Operations LLC | | Oil & Gas Operator | Feb 2024 |
| 679 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Dec 2023 |
| 680 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 681 | Shell Trading Us Company | Houston, TX 77210 | Oil & Gas Operator | Jan 2024 |
| 682 | Shideler Enterprises Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Feb 2019 |
| 683 | Shields Cooper | Bonita Springs, FL 34135-3421 | Oil & Gas Operator | Jan 2011 |
| 684 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Jan 2024 |
| 685 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 686 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034-0033 | Oil Operator | Dec 2023 |
| 687 | Short W D Revocable Trust | Oxford, KS 67119-0729 | Oil & Gas Operator | Mar 2015 |
| 688 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 689 | Silvertin Farm Production LLC | | Oil & Gas Operator | Apr 2020 |
| 690 | Six "E" Trading Company | Allen, OK 74825-0346 | Oil & Gas Operator | Sep 2020 |
| 691 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 692 | Sopac Exploration Inc | Drumright, OK 74030 | Oil & Gas Operator | Jun 1993 |
| 693 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74602-0067 | Oil & Gas Operator | Jul 2022 |
| 694 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2023 |
| 695 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 696 | Southwest Petroleum Corp | Drumright, OK 74030-0552 | Oil & Gas Operator | Mar 2018 |
| 697 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 698 | Sparks Greg | Afton, OK 74331-3897 | Oil & Gas Operator | Jan 2024 |
| 699 | Sparks Mick Oil Company Inc | Jennings, OK 74038-0250 | Oil & Gas Operator | Feb 2024 |
| 700 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Jan 2024 |