| 4401 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 4402 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 4403 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 4404 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Jan 2025 |
| 4405 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 4406 | Pennant Energy LLC | Oklahoma City, OK 73116 | Oil Operator | Dec 2024 |
| 4407 | Pennant Oil & Gas LLC | Oklahma City, OK 73159-6905 | Oil & Gas Operator | Jan 2024 |
| 4408 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | May 2025 |
| 4409 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 4410 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 4411 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 4412 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 4413 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 4414 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 4415 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 4416 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 4417 | Peregrine Petroleum Corp | Oklahoma City, OK 73116-7639 | Oil & Gas Operator | May 2020 |
| 4418 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Oct 2024 |
| 4419 | Performance Operating Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Apr 2025 |
| 4420 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Apr 2025 |
| 4421 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | May 2025 |
| 4422 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 4423 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 4424 | Perkins Production Company Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2006 |
| 4425 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 4426 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 4427 | Permian Roustabout & Oilfield Services LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2024 |
| 4428 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Jul 2025 |
| 4429 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 4430 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Apr 2025 |
| 4431 | Perry Production Company Inc | Perry, OK 73077-0412 | Oil & Gas Operator | May 2006 |
| 4432 | Pet-Ex, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 4433 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Apr 2025 |
| 4434 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 4435 | Petra Petroleum Management LLC | Hotchkiss, CO 81419-0369 | Gas Operator | Sep 2014 |
| 4436 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 4437 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Mar 2025 |
| 4438 | Petro Oilfield Equipment Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Dec 2010 |
| 4439 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 4440 | Petro Warrior LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2025 |
| 4441 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 4442 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Jul 2025 |
| 4443 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 4444 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 4445 | Petro-Mac Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 4446 | Petro-Management Assoc., Inc. | Edmond, OK 73083-2346 | Oil & Gas Operator | Jun 2007 |
| 4447 | Petro-Met Energy LLC | Edmond, OK 73034-1237 | Oil Operator | Apr 2025 |
| 4448 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 4449 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 4450 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 4451 | Petroflow Energy Corporation | Tulsa, OK 74119-5405 | Oil & Gas Operator | Oct 2016 |
| 4452 | Petrogas Exploration Inc | | Oil Operator | Feb 2025 |
| 4453 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 4454 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 4455 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 4456 | Petrojen Production Company Inc | Bakersfield, CA 93311 | Oil Operator | Apr 2025 |
| 4457 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 4458 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Jul 2025 |
| 4459 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 4460 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 4461 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 4462 | Petroleum Exploration Company LTD LP | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 4463 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 4464 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 4465 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 4466 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 4467 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jul 2025 |
| 4468 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Jul 2025 |
| 4469 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 4470 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 4471 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 4472 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 4473 | Petrolia Drilling Corporation | | Oil & Gas Operator | Jul 2003 |
| 4474 | Petrolia Energy Corporation | Pearland, TX 77581 | Oil Operator | Jan 2024 |
| 4475 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 4476 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 4477 | Petromerica Operating LLC | Oklahoma City, OK 73102-4613 | Oil Operator | Apr 2025 |
| 4478 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Jul 2025 |
| 4479 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | Jul 2025 |
| 4480 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Jul 2025 |
| 4481 | Petroquest Oil & Gas LLC | Wewoka, OK 74884 | Oil & Gas Operator | Apr 2025 |
| 4482 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 4483 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 4484 | Petrowater Solutions LLC | Oklahoma City, OK 73102-5643 | Oil Operator | Aug 2016 |
| 4485 | Pettit Charles Oil Company | Okmulgee, OK 74447-4226 | Oil & Gas Operator | Sep 2018 |
| 4486 | Pharoah Bob | Maysville, OK 73057 | Oil & Gas Operator | Jul 1994 |
| 4487 | Phase III Drilling Inc | Wetumka, OK 74883-0333 | Oil & Gas Operator | Apr 2025 |
| 4488 | PHD Oil & Gas Inc | Rush Springs, OK 73082-0218 | Oil & Gas Operator | May 2021 |
| 4489 | Pheldon Oil Production Inc | Asher, OK 74826-2629 | Oil & Gas Operator | Dec 2024 |
| 4490 | Philco Energy Inc | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2015 |
| 4491 | Philcon Development Co. | Amarillo, TX 79101 | Oil & Gas Operator | Sep 2014 |
| 4492 | Phillips Jr N J | Seminole, OK 74868-2828 | Oil Operator | Jul 1998 |
| 4493 | Phillips Oil Operating Co | Enid, OK 73703-4921 | Oil & Gas Operator | May 2019 |
| 4494 | Phillips Operating Co. | Mineral Wells, TX 76067 | Oil & Gas Operator | Jan 2013 |
| 4495 | Phillips, Warren P | | Oil & Gas Operator | Apr 2011 |
| 4496 | Philpot Operating Company Inc | Ada, OK 74820-4457 | Oil & Gas Operator | May 2013 |
| 4497 | Phoenix Hydrocarbons Operating Co | Midland, TX 79702-3638 | Oil & Gas Operator | Jul 2018 |
| 4498 | Phoenix LTD | Charlotte, NC 28231-1547 | Oil Operator | Sep 2001 |
| 4499 | Phoenix Midstream LLC | Houston, TX 77042 | Oil Operator | Aug 2022 |
| 4500 | Phoenix Oil & Gas Inc | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |