| 4501 | Phoenix Operating Company, Inc. | Shreveport, LA 71161 | Oil & Gas Operator | Mar 2015 |
| 4502 | Phoenix Petrocorp, Inc. | McKinney, TX 75070 | Oil & Gas Operator | May 2025 |
| 4503 | Phoenix Production Inc | Burneyville, OK 73430-2158 | Oil & Gas Operator | Feb 2025 |
| 4504 | Pices Energy Production Co. | Alva, OK 73717-9512 | Oil & Gas Operator | Apr 2014 |
| 4505 | Pickelsimer Kenny | Wilson, OK 73463-6502 | Oil & Gas Operator | Aug 2014 |
| 4506 | Pierce G R Oil Properties Inc | Oklahoma City, OK 73106 | Oil Operator | Feb 1999 |
| 4507 | Pierce Investments | Weatherford, OK 73096 | Oil Operator | Jul 1994 |
| 4508 | Pierce L H | Healdton, OK 73438-9530 | Oil Operator | Jan 1996 |
| 4509 | Pierce O M Operations | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 4510 | Pierce Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2017 |
| 4511 | Pierce Patsey R The Estate Of | Duncan, OK 73533-4900 | Oil Operator | Mar 2007 |
| 4512 | Pierco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Jul 2025 |
| 4513 | Pierson Max S | Bartlesville, OK 74003-5909 | Oil Operator | Sep 2020 |
| 4514 | Pike Oil & Gas Inc | Pittsfield, IL 62363 | Oil & Gas Operator | Oct 2020 |
| 4515 | Pilgrim & Smith Inc | Tulsa, OK 74152 | Oil & Gas Operator | Apr 2015 |
| 4516 | Pillers Chris | Skiatook, OK 74070-1811 | Oil Operator | Apr 2025 |
| 4517 | Pilot Exploration Company | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2011 |
| 4518 | Pine Ridge Energy Inc | Cyril, OK 73029 | Oil & Gas Operator | Apr 2025 |
| 4519 | Pinkston Robert L | Beggs, OK 74421 | Oil Operator | Mar 2025 |
| 4520 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 4521 | Pinnacle Exploration & Production Co | Kiefer, OK 74041 | Oil & Gas Operator | May 2025 |
| 4522 | Pinnacle Exploration Inc | Edmond, OK 73003 | Oil & Gas Operator | Mar 2024 |
| 4523 | Pinnacle Operating Company LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2025 |
| 4524 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Jul 2025 |
| 4525 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | May 2025 |
| 4526 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 4527 | Pioneer Of Oklahoma LP | Houston, TX 77090-3655 | Oil & Gas Operator | Apr 2025 |
| 4528 | Pioneer Resources Prod LP | Irving, TX 75039-3745 | Oil & Gas Operator | Feb 2005 |
| 4529 | Pioneer Trucking, LLC | | Oil Operator | May 2025 |
| 4530 | Piper Operating LLC | Stigler, OK 74462 | Oil & Gas Operator | Apr 2025 |
| 4531 | Pitco Production Company | Tulsa, OK 74170-2320 | Oil & Gas Operator | May 2013 |
| 4532 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 4533 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 4534 | Pittman-Allen Operating LLC | Oklahoma City, OK 73122-1105 | Gas Operator | Feb 2016 |
| 4535 | Pixley Carlis D | Marlow, OK 73055 | Oil & Gas Operator | Sep 1999 |
| 4536 | Plains Oil & Gas | Cushing, OK 74023-4819 | Oil & Gas Operator | Jan 2019 |
| 4537 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 4538 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 4539 | Plains Resources Group LLC | Wynnewood, OK 73098 | Oil & Gas Operator | Apr 2025 |
| 4540 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 4541 | Plainsmen Energy LLC | Enid, OK 73703-5747 | Oil & Gas Operator | May 2025 |
| 4542 | Plano Petroleum LLC | Plano, TX 75093-8773 | Oil & Gas Operator | Apr 2013 |
| 4543 | Plenergy Dev LTD | | Oil & Gas Operator | Jun 2004 |
| 4544 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Apr 2025 |
| 4545 | Plo Inc | Amarillo, TX 79109-6222 | Gas Operator | Mar 2015 |
| 4546 | Plotner Oil Company | Oklahoma City, OK 73122 | Oil & Gas Operator | May 2025 |
| 4547 | Plotner Ralph Oil & Gas Inv Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2021 |
| 4548 | Plumb Resources, Inc. | Houston, TX 77096 | Oil & Gas Operator | Jun 1998 |
| 4549 | Plummer Energy Inc | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Nov 2016 |
| 4550 | Plymouth Exploration LLC | Tulsa, OK 74119-1031 | Oil & Gas Operator | Feb 2025 |
| 4551 | PM Oil & Gas, Inc. | San Angelo, TX 76903 | Oil Operator | Jul 2025 |
| 4552 | PMD Oil Recovery LLC | Oklahoma City, OK 73129 | Oil & Gas Operator | May 2025 |
| 4553 | Poblano Energy LLC | Houston, TX 77024-2217 | Oil & Gas Operator | Apr 2025 |
| 4554 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 4555 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 4556 | Pogue Randall | Ada, OK 74821-1547 | Oil & Gas Operator | Apr 2014 |
| 4557 | Polaris Energy Dev Co | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2000 |
| 4558 | Polaris Petroleum Operations LLC | Branson West, MO 65737 | Oil & Gas Operator | May 2019 |
| 4559 | Pole Cat Oil Company | Sapulpa, OK 74067 | Oil Operator | Apr 2025 |
| 4560 | Pollard Jr G W | Okmulgee, OK 74447 | Oil & Gas Operator | Apr 2015 |
| 4561 | Pollok Energy LLC | Tulsa, OK 74159 | Oil & Gas Operator | May 2025 |
| 4562 | Polo Operating Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 4563 | Ponder Oil Producers LLC | Okemah, OK 74859 | Oil & Gas Operator | Nov 2024 |
| 4564 | Pontotoc Operations Inc | Dallas, TX 75225-1425 | Oil & Gas Operator | Jun 2017 |
| 4565 | Pool, Lloyd Operating | Sandia Park, NM 87047 | Gas Operator | Dec 2013 |
| 4566 | Poorboy Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2022 |
| 4567 | Pope Charles Edward | Morris, OK 74445 | Oil & Gas Operator | Mar 2023 |
| 4568 | Pope Oil LLC | Morris, OK 74445 | Oil Operator | Apr 2025 |
| 4569 | Pope Ted & Karen Dba MP Operating | Bristow, OK 74010 | Oil Operator | May 2025 |
| 4570 | Portal Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 4571 | Porter John B | Ketchum, OK 74349-0207 | Oil & Gas Operator | May 2000 |
| 4572 | Porter John E "Gene" | Cushing, OK 74023 | Oil & Gas Operator | Aug 2000 |
| 4573 | Porter Oil And Gas Inc | Fort Smith, AR 72903-6906 | Oil & Gas Operator | Apr 2025 |
| 4574 | Porter Tom & John | Boynton, OK 74422 | Oil & Gas Operator | Apr 2025 |
| 4575 | Portfolio Oil Corporation | Oklahoma City, OK 73119 | Oil & Gas Operator | May 2013 |
| 4576 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | May 2025 |
| 4577 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 4578 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 4579 | Postrock Midcontinent Production LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2025 |
| 4580 | Potter Hammill & Potter Inc. | Beggs, OK 74421-0038 | Oil Operator | Aug 2013 |
| 4581 | Potter J And D Oil LLC | Kingfisher, OK 73750-3832 | Oil & Gas Operator | Mar 2015 |
| 4582 | Potter Tom Estate | | Oil Operator | Dec 2014 |
| 4583 | Potts Exploration LLC | Oklahoma City, OK 73114 | Gas Operator | Jan 2016 |
| 4584 | Pound Robert M | Bristow, OK 74010 | Oil & Gas Operator | Sep 2014 |
| 4585 | Powell James S | Cleveland, OK 74020 | Oil Operator | Apr 2025 |
| 4586 | Powell Jess L | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2025 |
| 4587 | Powell Oil | Healdton, OK 73438-4463 | Oil & Gas Operator | May 2025 |
| 4588 | Power Fuel Producers Inc | Keller, TX 76244-1059 | Oil & Gas Operator | Sep 2001 |
| 4589 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Jul 2025 |
| 4590 | Powers Energy Inc | Denver, CO 80237-1926 | Oil & Gas Operator | Aug 1999 |
| 4591 | PPP Petroleum LP | Dallas, TX 75201-1585 | Oil & Gas Operator | Apr 2025 |
| 4592 | Prairie Exploration Company | Norman, OK 73072 | Oil & Gas Operator | Mar 2011 |
| 4593 | Prairie Wind Oil LLC | Blackwell, OK 74647-7242 | Oil & Gas Operator | Apr 2025 |
| 4594 | Prairiedale Energy Inc | Duncan, OK 73533-3657 | Oil & Gas Operator | Apr 2025 |
| 4595 | PRDJ Cockrum Enterprises Inc | Okemah, OK 74859-5126 | Oil & Gas Operator | Mar 2022 |
| 4596 | Pre-MC Inc | Allen, OK 74825 | Oil & Gas Operator | Apr 2025 |
| 4597 | Precision Operating Inc. | Richardson, TX 75080 | Oil & Gas Operator | Jul 2014 |
| 4598 | Pregler Oil Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 4599 | Premier Gas Company LLC | Durant, OK 74701 | Oil Operator | Mar 2025 |
| 4600 | Premier Oil & Gas LLC | Blanchard, OK 73010-2010 | Oil Operator | Dec 2022 |