| 601 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Oct 2024 |
| 602 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Dec 2024 |
| 603 | Pioneer Resources Prod LP | Irving, TX 75039-3745 | Oil & Gas Operator | Feb 2005 |
| 604 | Piper Operating LLC | Stigler, OK 74462 | Oil & Gas Operator | Oct 2024 |
| 605 | Pitco Production Company | Tulsa, OK 74170-2320 | Oil & Gas Operator | May 2013 |
| 606 | Plains Liquids Transport Inc | Houston, TX 77002 | Oil & Gas Operator | May 1996 |
| 607 | Plains Marketing & Trans Inc | Houston, TX 76002 | Oil & Gas Operator | Oct 1998 |
| 608 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 609 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 610 | Plainsmen Energy LLC | Enid, OK 73703-5747 | Oil & Gas Operator | Oct 2024 |
| 611 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2024 |
| 612 | Plotner Oil Company | Oklahoma City, OK 73122 | Oil & Gas Operator | Oct 2024 |
| 613 | Plotner Ralph Oil & Gas Inv Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2021 |
| 614 | Portal Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 615 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 616 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 617 | Potter J And D Oil LLC | Kingfisher, OK 73750-3832 | Oil & Gas Operator | Mar 2015 |
| 618 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Dec 2024 |
| 619 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2024 |
| 620 | Presidio Energy, Inc. | | Oil & Gas Operator | Jan 1992 |
| 621 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 622 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 623 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 624 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 625 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 626 | Production Systems Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 627 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Dec 2024 |
| 628 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 629 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 630 | Pyramid Oil Of America, Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 631 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
| 632 | Quanah Company | Tulsa, OK 74159-0469 | Oil & Gas Operator | May 2020 |
| 633 | Quantum Oil & Gas Corporation | Oklahoma City, OK 73172 | Oil & Gas Operator | Dec 2024 |
| 634 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Sep 2024 |
| 635 | Quest Property Inc | Yukon, OK 73099 | Oil & Gas Operator | Sep 2024 |
| 636 | Questar Energy Trading | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2020 |
| 637 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 638 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 639 | R360 Oklahoma LLC | The Woodlands, TX 77381 | Oil Operator | Jul 2021 |
| 640 | Ra-Jac LLC | Norman, OK 73072 | Oil & Gas Operator | Oct 2024 |
| 641 | Raf Oil Company | Oklahoma City, OK 73120-1944 | Oil & Gas Operator | Jul 2013 |
| 642 | Rafter H Operating LLC | El Reno, OK 73036 | Oil & Gas Operator | Oct 2024 |
| 643 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 644 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 645 | Ramsey Engineering Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 1993 |
| 646 | Ramsey Nichols Operating Company LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Oct 2024 |
| 647 | Ramsey Property Management LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Sep 2024 |
| 648 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 649 | Randy And Jan Walker Oil Company LLC | Konawa, OK 74849-9333 | Oil & Gas Operator | Oct 2024 |
| 650 | Randy Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2024 |
| 651 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 652 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2024 |
| 653 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 654 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Sep 2024 |
| 655 | Raw Crude Oil & Gas LLC | Norman, OK 73069 | Oil & Gas Operator | Oct 2024 |
| 656 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2024 |
| 657 | Raydon Production Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 1992 |
| 658 | RDH Enterprises, Inc. | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 659 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 660 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Sep 2024 |
| 661 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 662 | Red Hawk Resources Inc | Edmond, OK 73003-3207 | Oil & Gas Operator | Oct 2024 |
| 663 | Red Plains Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2017 |
| 664 | Red Rocks Oil & Gas Operating LLC | Oklahoma City, OK 73103-4821 | Oil & Gas Operator | Oct 2024 |
| 665 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Sep 2024 |
| 666 | Redfork Operations LLC | Dover, OK 73734-9409 | Oil & Gas Operator | Oct 2024 |
| 667 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Oct 2024 |
| 668 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 669 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Sep 2024 |
| 670 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Sep 2024 |
| 671 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 672 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 673 | Ricks Expl Acquisition Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2004 |
| 674 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 675 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 676 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2024 |
| 677 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 678 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Sep 2024 |
| 679 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Sep 2024 |
| 680 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 681 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Oct 2024 |
| 682 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 683 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 684 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 685 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 686 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 2024 |
| 687 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Aug 2024 |
| 688 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 689 | Rover Operating, LLC | Chicago, IL 60606 | Oil & Gas Operator | Sep 2024 |
| 690 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Oct 2024 |
| 691 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Sep 2024 |
| 692 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Aug 2024 |
| 693 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Sep 2024 |
| 694 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Oct 2024 |
| 695 | S & S Star Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2023 |
| 696 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 697 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |
| 698 | Salt Plain Pipeline Corp | Edmond, OK 73013 | Oil & Gas Operator | Jun 2010 |
| 699 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 700 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2024 |