| 501 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 502 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 503 | Payneco Pipeline Company | Yale, OK 74085 | Oil & Gas Operator | Dec 2000 |
| 504 | PBT Enterprises Inc | Garber, OK 73738-0262 | Oil & Gas Operator | May 2023 |
| 505 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 506 | Pelto Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 507 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 508 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 509 | Petro Warrior LLC | Wichita, KS 67201-3399 | Oil & Gas Operator | Feb 2024 |
| 510 | Petro-Mac Corporation | Tulsa, OK 74101-3405 | Oil & Gas Operator | Jan 2024 |
| 511 | Petroflow Energy Corporation | | Oil & Gas Operator | Oct 2016 |
| 512 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 513 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 514 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 515 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Apr 2024 |
| 516 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 517 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Apr 2024 |
| 518 | Phase III Drilling Inc | Wetumka, OK 74883-0333 | Oil & Gas Operator | Jan 2024 |
| 519 | Phillips Oil Operating Co | Enid, OK 73703-4921 | Oil & Gas Operator | May 2019 |
| 520 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 521 | Pinnacle Exploration Inc | Edmond, OK 73083-5348 | Oil & Gas Operator | Jan 2024 |
| 522 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 523 | Plains Liquids Transport Inc | Houston, TX 77002 | Oil & Gas Operator | May 1996 |
| 524 | Pollard Jr G W | Okmulgee, OK 74447 | Oil & Gas Operator | Apr 2015 |
| 525 | Ponder Oil Producers LLC | Kellyville, OK 74039 | Oil & Gas Operator | Nov 2023 |
| 526 | Pope Charles Edward | Morris, OK 74445-0114 | Oil & Gas Operator | Mar 2023 |
| 527 | Porter Oil And Gas Inc | Fort Smith, AR 72903-6906 | Oil & Gas Operator | Jan 2024 |
| 528 | Portfolio Oil Corporation | Oklahoma City, OK 73119 | Oil & Gas Operator | May 2013 |
| 529 | Pound Robert M | Bristow, OK 74010 | Oil & Gas Operator | Sep 2014 |
| 530 | Powell Jess L | Bristow, OK 74010-1151 | Oil & Gas Operator | Dec 2023 |
| 531 | Prentice Ed | Allen, OK 74825-6958 | Oil & Gas Operator | Dec 2023 |
| 532 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 533 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 534 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 535 | Prosperous Oil & Gas Inc | Kiefer, OK 74041-0843 | Oil & Gas Operator | Jan 2024 |
| 536 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2024 |
| 537 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 538 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 539 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Jan 2024 |
| 540 | Quail Creek Petro MGMT Corp | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 541 | Quanah Company | Tulsa, OK 74159-0469 | Oil & Gas Operator | May 2020 |
| 542 | Questar Energy Trading | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2020 |
| 543 | R Baker Oil LLC | Okemah, OK 74859-0621 | Oil & Gas Operator | Feb 2024 |
| 544 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2024 |
| 545 | R D T Properties | Tulsa, OK 74105-7122 | Oil & Gas Operator | Sep 2017 |
| 546 | R K R Exploration | Seminole, OK 74868-9754 | Oil & Gas Operator | Mar 2015 |
| 547 | Ramey Oil Corporation | Kiefer, OK 74041-0699 | Oil & Gas Operator | Mar 2021 |
| 548 | Ramey Wayne | Mounds, OK 74047-0520 | Oil & Gas Operator | Dec 2023 |
| 549 | Rampage Energy Inc | Bristow, OK 74010-6415 | Oil & Gas Operator | Apr 2020 |
| 550 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 551 | Rawhide Oil Company | | Oil & Gas Operator | Sep 2011 |
| 552 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 553 | Red Fork Oil Co | Lakewood, CO 80215 | Oil & Gas Operator | Aug 1993 |
| 554 | Red Fork Production, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2023 |
| 555 | Red Hawk Disposal LLC | | Oil Operator | Jun 2023 |
| 556 | Redbud E & P, Inc. | Spring, TX 77379 | Oil & Gas Operator | Apr 2024 |
| 557 | Reed Power Tongs Inc | Seminole, OK 74818-1462 | Oil & Gas Operator | Jan 2024 |
| 558 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 559 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2024 |
| 560 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 561 | Revilo Exploration LLC | | Oil & Gas Operator | Apr 2020 |
| 562 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 563 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 564 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2024 |
| 565 | Roadrunner Energy, Inc. | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 566 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Jan 2024 |
| 567 | Rockbridge Petroleum LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2009 |
| 568 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Feb 2024 |
| 569 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 570 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 571 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 572 | Rose Dan And Bill | Henryetta, OK 74437-1450 | Oil & Gas Operator | Dec 2023 |
| 573 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 574 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Jan 2024 |
| 575 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 576 | Roth Gary E | Tonkawa, OK 74653-2033 | Oil & Gas Operator | Jan 2020 |
| 577 | Rowe Energy | Beggs, OK 74421-0240 | Oil & Gas Operator | Mar 2015 |
| 578 | Rowe Stephen Oil Properties LLC | Hunt, TX 78024-0408 | Oil & Gas Operator | Apr 2020 |
| 579 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 580 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 581 | S & S Oil & Gas Corporation | Okemah, OK 74859-0659 | Oil & Gas Operator | Sep 2014 |
| 582 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 2024 |
| 583 | Salty Dog Disposal LLC | | Oil Operator | Mar 2024 |
| 584 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 585 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Dec 2023 |
| 586 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2024 |
| 587 | Seahawk Oil International Inc | Newport Beach, CA 92660 | Oil & Gas Operator | Oct 1997 |
| 588 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 589 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jan 2024 |
| 590 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 591 | Shallow Energy Inc | South Dennis, MA 02660-2028 | Oil & Gas Operator | Jan 2024 |
| 592 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 593 | Shelton Dempsey W | Tulsa, OK 74119-4036 | Oil & Gas Operator | Mar 2015 |
| 594 | Shepard James | Beggs, OK 74421-0899 | Oil & Gas Operator | Oct 2023 |
| 595 | Sherman Oil & Gas Co Inc | Chandler, OK 74834-0571 | Oil & Gas Operator | Apr 2020 |
| 596 | Sherman Oil & Gas LLC | Chandler, OK 74834-0571 | Oil & Gas Operator | Jan 2024 |
| 597 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 598 | Shideler Enterprises Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Feb 2019 |
| 599 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 600 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Feb 2024 |