| 401 | Production Systems Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 402 | Proex Energy Corp | | Oil & Gas Operator | Dec 1997 |
| 403 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Nov 2024 |
| 404 | Prompt Operating LLC | Velma, OK 73491 | Oil Operator | Aug 2024 |
| 405 | Prospect Enterprises Inc | Wetumka, OK 74883-0068 | Oil & Gas Operator | Apr 2004 |
| 406 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 407 | Prosper Oil & Gas,Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 408 | Prosperous Oil & Gas Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Aug 2024 |
| 409 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 410 | Prough A J | Gotebo, OK 73041 | Oil Operator | Apr 2014 |
| 411 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Sep 2024 |
| 412 | Providence Energy Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Feb 1994 |
| 413 | Providence Exploration & Production Inc | Fort Smith, AR 72913-5171 | Gas Operator | Dec 2012 |
| 414 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 415 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Sep 2024 |
| 416 | Pryor, Curtis | Lubbock, TX 79424 | Oil & Gas Operator | Dec 1998 |
| 417 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 418 | Psa Inc | Chandler, OK 74834-4222 | Oil & Gas Operator | Aug 2024 |
| 419 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |
| 420 | PT II LTD | | Oil & Gas Operator | Oct 2004 |
| 421 | Pullers Oil Company LLC | Blackwell, OK 74631-9512 | Oil & Gas Operator | Sep 2024 |
| 422 | Pulliam Dennis L | Mannford, OK 74044-9733 | Oil & Gas Operator | Nov 2001 |
| 423 | Pulliam IVan Henry | Coweta, OK 74429 | Oil & Gas Operator | Dec 2017 |
| 424 | Pulliam Ken D | Bristow, OK 74010-8648 | Oil & Gas Operator | Feb 2012 |
| 425 | Pulliam Melvin | Mannford, OK 74044 | Oil & Gas Operator | Jul 2019 |
| 426 | Puma Petroleum Corporation | Tulsa, OK 74152-0129 | Oil Operator | Feb 2004 |
| 427 | Pump It Up LLC | Owasso, OK 74055-0723 | Oil Operator | Jun 2024 |
| 428 | Pumping Services Inc | Seminole, OK 74868-2421 | Oil & Gas Operator | Feb 2023 |
| 429 | Pure Energy Systems Inc | Olive Branch, MS 38654-9041 | Gas Operator | Aug 2024 |
| 430 | Pure Oil Co | | Oil & Gas Operator | Dec 1996 |
| 431 | Putnam Phyllis L | Bartlesville, OK 74006-7326 | Oil & Gas Operator | May 2021 |
| 432 | PVR Gas Processing LLC | Irving, TN 75039 | Oil & Gas Operator | Feb 2015 |
| 433 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 434 | Pybas Robert | Wanette, OK 74878 | Oil Operator | Apr 2014 |
| 435 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |
| 436 | Pyramid Oil Of America, Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Aug 2024 |
| 437 | Pyro Energy Corp | Kingwood, TX 77339-2102 | Oil & Gas Operator | Mar 1998 |