| 22501 | Petroleum Production Management, Inc. | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 22502 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Oct 2025 |
| 22503 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 22504 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 22505 | Petroleum Properties MGMT Co LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2005 |
| 22506 | Petroleum Properties MGMT Corp | | Oil & Gas Operator | Aug 1990 |
| 22507 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 22508 | Petroleum Property MGMT, Inc (A) | Fort Worth, TX 76101 | Oil & Gas Operator | May 1994 |
| 22509 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 22510 | Petroleum Recovery & Expl Inc. | | Oil Operator | Oct 1984 |
| 22511 | Petroleum Recovery Systems, L.C. | Houston, TX 77024 | Oil Operator | Oct 2025 |
| 22512 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 22513 | Petroleum Resource Management Co | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 22514 | Petroleum Resource Management Corp. | | Oil & Gas Operator | Aug 2025 |
| 22515 | Petroleum Resource MGMT Co TX | | Oil & Gas Operator | Sep 2020 |
| 22516 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 22517 | Petroleum Resources MGMT Corp. | | Oil & Gas Operator | Mar 2002 |
| 22518 | Petroleum Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 22519 | Petroleum Service Partners, Inc. | Indiana, PA 15701-0000 | Oil & Gas Operator | Dec 2021 |
| 22520 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 22521 | Petroleum Techno | | Oil & Gas Operator | Dec 1996 |
| 22522 | Petroleum Technologies, Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Jun 2025 |
| 22523 | Petroleum Venture Capitol Corp | | Oil Operator | Jun 1980 |
| 22524 | Petroleum Well Service LLC | Silsbee, TX 77656 | Oil Operator | Oct 2025 |
| 22525 | Petrolia Drilling Corporation | | Oil & Gas Operator | Jul 2003 |
| 22526 | Petrolia Energy Corporation | Pearland, TX 77581 | Oil Operator | Jan 2024 |
| 22527 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Oct 2025 |
| 22528 | Petromac, Inc. | Onalaska, TX 77360 | Oil & Gas Operator | Oct 2025 |
| 22529 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 22530 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 22531 | Petromax Oil And Gas Inc | | Oil & Gas Operator | Dec 1988 |
| 22532 | Petromerica Operating LLC | Oklahoma City, OK 73102-4613 | Oil Operator | Jun 2025 |
| 22533 | Petrominerals Corp. | | Oil & Gas Operator | Dec 2003 |
| 22534 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Oct 2025 |
| 22535 | Petron Development Company | | Oil & Gas Operator | Oct 2020 |
| 22536 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Oct 2025 |
| 22537 | Petron Oil & Gas | Lenexa, KS 66215 | Oil & Gas Operator | Jun 2025 |
| 22538 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | Oct 2025 |
| 22539 | Petronomics Petroleum, Inc. | Austin, TX 78734 | Oil & Gas Operator | Jan 1995 |
| 22540 | Petronomics, Inc. | Houston, TX 77074 | Oil & Gas Operator | Aug 2003 |
| 22541 | Petronova, LLC | | Gas Operator | Jul 2014 |
| 22542 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 22543 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 22544 | Petropoint Energy Operating, LLC | Houston, TX 77098 | Oil & Gas Operator | Oct 2025 |
| 22545 | Petroprize | | Oil & Gas Operator | Aug 2025 |
| 22546 | Petropro Energy Partners, L.P. | Houston, TX 77024 | Oil & Gas Operator | Jan 2013 |
| 22547 | Petropro Petroleum LLC | | Oil Operator | Jun 2025 |
| 22548 | Petroquest Energy, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2001 |
| 22549 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2025 |
| 22550 | Petroquest Exploration, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 2008 |
| 22551 | Petroquest Oil & Gas LLC | Wewoka, OK 74884 | Oil & Gas Operator | Jun 2025 |
| 22552 | Petroquest, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 22553 | Petroreal Inc. | Temple, TX 76503 | Oil & Gas Operator | Oct 2025 |
| 22554 | Petrosantander (USA) Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 22555 | Petrosaurus, Inc. | Somerset, TX 78069 | Oil Operator | Oct 2025 |
| 22556 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 22557 | Petrosearch, Inc. | | Oil Operator | Jul 1992 |
| 22558 | Petroshale (Us) Inc. | | Oil & Gas Operator | Aug 2025 |
| 22559 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 22560 | Petrosil Resources Inc. | | Oil & Gas Operator | Oct 1981 |
| 22561 | Petrosource Energy Corporation | Fort Worth, TX 76112 | Oil & Gas Operator | Oct 2025 |
| 22562 | Petrosource Production Co. L.P. | Midland, TX 79701 | Oil & Gas Operator | Nov 2007 |
| 22563 | Petrosource Production Co., LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 22564 | Petrotech Resources Corp | Glasgow, KY 42141 | Oil & Gas Operator | Dec 2022 |
| 22565 | Petrotex Engineering Company | Cypress, TX 77429 | Oil & Gas Operator | Oct 2025 |
| 22566 | Petrotex Louisiana Company | | Oil & Gas Operator | Aug 1998 |
| 22567 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 22568 | Petrotx Operating, LLC | Kingwood, TX 77339 | Oil & Gas Operator | Oct 2025 |
| 22569 | Petroventures In | | Oil Operator | Apr 1987 |
| 22570 | Petrowater Solutions LLC | Oklahoma City, OK 73102-5643 | Oil Operator | Aug 2016 |
| 22571 | Petrowest | | Oil & Gas Operator | Dec 2001 |
| 22572 | Petrowest Energy Co Inc | | Oil & Gas Operator | Dec 2024 |
| 22573 | Petrox Petroleum Company | Great Falls, MT 59403-0989 | Oil Operator | Jul 2025 |
| 22574 | Petrox Resources Inc. | Meeker, CO 81641 | Oil & Gas Operator | Aug 2025 |
| 22575 | Petrox, Inc | Streetsboro, OH 44241 | Oil & Gas Operator | Dec 2024 |
| 22576 | Petrus Oil Company., L.P. | | Oil & Gas Operator | Dec 1989 |
| 22577 | Petrus Operating Co., Inc. | | Oil & Gas Operator | Dec 1986 |
| 22578 | Petsec Energy Inc. | | Oil & Gas Operator | Sep 2012 |
| 22579 | Pettigrew Kenny | Spiro, OK 74959 | Gas Operator | Jun 2025 |
| 22580 | Pettigrew Pumping Service Inc | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2024 |
| 22581 | Pettit Charles Oil Company | Okmulgee, OK 74447-4226 | Oil & Gas Operator | Sep 2018 |
| 22582 | Petx Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 22583 | Petx Petroleum C | | Oil Operator | Nov 1993 |
| 22584 | PF Operating Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Aug 2003 |
| 22585 | Pfed Operating | Keller, TX 76248 | Oil Operator | Oct 2025 |
| 22586 | Pfeifer Explorations, LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 22587 | Pfog Operations, LLC | Midland, TX 79710 | Oil Operator | Oct 2025 |
| 22588 | Pfrang, Derek | Wetmore, KS 66550 | Oil Operator | Jul 2022 |
| 22589 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 22590 | PG&E Resources Offshore Company | Dallas, TX 75206 | Oil & Gas Operator | Oct 1994 |
| 22591 | PG-M International Operating,LLC | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 22592 | Pgi Operating, LLC | Sweetwater, TX 79556 | Oil Operator | Oct 2025 |
| 22593 | Pgo, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 1999 |
| 22594 | PGP Operating, LLC | Vance, AL 35490 | Gas Operator | Jul 2025 |
| 22595 | PH Exploration, Inc. | Houston, TX 77008 | Oil & Gas Operator | Nov 2001 |
| 22596 | Phalanx Petroleum LLC | | Oil & Gas Operator | Jan 2025 |
| 22597 | Pharaoh & Associates, Inc. | Houston, TX 77252 | Oil & Gas Operator | Aug 2002 |
| 22598 | Pharaoh Oil & Gas, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 22599 | Pharaoh Oil, LLC | | Oil Operator | Jan 2025 |
| 22600 | Pharoah Bob | Maysville, OK 73057 | Oil & Gas Operator | Jul 1994 |