| 4401 | PCL Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 4402 | PCX Corporation | | Oil & Gas Operator | Feb 1994 |
| 4403 | PDG Production LLC | | Oil & Gas Operator | Jan 2024 |
| 4404 | Pe Osage LLC | | Oil Operator | Jan 2024 |
| 4405 | Peachridge Energy Operating LLC | | Oil & Gas Operator | Feb 2024 |
| 4406 | Peak Operating Oil & Gas LLC | | Oil & Gas Operator | Jan 2024 |
| 4407 | Pearl Oil Company | Nichols Hills, OK 73120-1408 | Oil & Gas Operator | Nov 2023 |
| 4408 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 4409 | Pearsall Jarrett | | Oil Operator | Jan 2024 |
| 4410 | Pease George W Jr | Fairfax, OK 74637 | Oil & Gas Operator | Mar 1998 |
| 4411 | Pedco Inc | | Oil & Gas Operator | Nov 1997 |
| 4412 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 4413 | Pedocs Inc | Tulsa, OK 74147-0926 | Oil & Gas Operator | Jan 2024 |
| 4414 | Pegasus Energy Corporation | Oklahoma City, OK 73162 | Oil & Gas Operator | Mar 2015 |
| 4415 | Pegg Oil LLC | Allen, OK 74825-4900 | Oil Operator | Aug 2022 |
| 4416 | Pekrul Jeffrey S | | Gas Operator | Jan 2024 |
| 4417 | Pelican Dome Exploration Inc. | Harahan, LA 70123 | Oil & Gas Operator | Aug 2000 |
| 4418 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 4419 | Pelto Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 4420 | Pemco LLC | Skiatook, OK 74070-4018 | Oil Operator | Feb 2023 |
| 4421 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 4422 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 4423 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 4424 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 4425 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Feb 2024 |
| 4426 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2018 |
| 4427 | Pennant Energy LLC | | Oil Operator | Oct 2023 |
| 4428 | Pennant Oil & Gas LLC | | Oil & Gas Operator | Jan 2024 |
| 4429 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Feb 2024 |
| 4430 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 4431 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 4432 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 4433 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 4434 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 4435 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 4436 | Peoples Ice Inc | | Oil & Gas Operator | Nov 1997 |
| 4437 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 4438 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 4439 | Peregrine Petroleum Corp | Oklahoma City, OK 73116-7639 | Oil & Gas Operator | May 2020 |
| 4440 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Oct 2023 |
| 4441 | Performance Operating Company LLC | | Oil & Gas Operator | Jan 2024 |
| 4442 | Performance Petroleum Company LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Jan 2024 |
| 4443 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Feb 2024 |
| 4444 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 4445 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 4446 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 4447 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 4448 | Permian Roustabout & Oilfield Services LLC | | Oil & Gas Operator | Jan 2024 |
| 4449 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 4450 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Dec 2023 |
| 4451 | Perry Production Company Inc | Perry, OK 73077-0412 | Oil & Gas Operator | May 2006 |
| 4452 | Pet-Ex, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 4453 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Jan 2024 |
| 4454 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 4455 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 4456 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2024 |
| 4457 | Petro Oilfield Equipment Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Dec 2010 |
| 4458 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 4459 | Petro Warrior LLC | Wichita, KS 67201-3399 | Oil & Gas Operator | Feb 2024 |
| 4460 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 4461 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | May 2024 |
| 4462 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 4463 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 4464 | Petro-Mac Corporation | Tulsa, OK 74101-3405 | Oil & Gas Operator | Jan 2024 |
| 4465 | Petro-Management Assoc., Inc. | Edmond, OK 73083-2346 | Oil & Gas Operator | Jun 2007 |
| 4466 | Petro-Met Energy LLC | | Oil Operator | Jan 2024 |
| 4467 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 4468 | Petroco Inc | | Oil & Gas Operator | Nov 1996 |
| 4469 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 4470 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 4471 | Petrodudes | Crescent, OK 73028-8706 | Oil & Gas Operator | Nov 2023 |
| 4472 | Petroflow Energy Corporation | | Oil & Gas Operator | Oct 2016 |
| 4473 | Petrogas Exploration Inc | | Oil Operator | Jan 2024 |
| 4474 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 4475 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2024 |
| 4476 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 4477 | Petrojen Production Company Inc | | Oil Operator | Mar 2024 |
| 4478 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 4479 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | May 2024 |
| 4480 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 4481 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 4482 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 4483 | Petroleum Exploration Company LTD LP | | Oil & Gas Operator | Feb 2024 |
| 4484 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 4485 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 4486 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 4487 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 4488 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | May 2024 |
| 4489 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2024 |
| 4490 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 4491 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 4492 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 4493 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 4494 | Petrolia Energy Corporation | Houston, TX 77024 | Oil Operator | Jan 2024 |
| 4495 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 4496 | Petromark Exploration Company | | Oil & Gas Operator | Nov 2001 |
| 4497 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 4498 | Petromerica Operating LLC | | Oil Operator | Jan 2024 |
| 4499 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | May 2024 |
| 4500 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | May 2024 |