| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 2 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 3 | Panadero Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2002 |
| 4 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 5 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 6 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 7 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2025 |
| 8 | Paramore Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2022 |
| 9 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 10 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 11 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 12 | Parwest Land Exploration, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2025 |
| 13 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 14 | Payne Exploration Company | Crescent, OK 73028 | Oil & Gas Operator | Feb 2025 |
| 15 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 16 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 17 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 18 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Mar 2025 |
| 19 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 20 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 21 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 22 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Jun 2025 |
| 23 | Pharoah Bob | Maysville, OK 73057 | Oil & Gas Operator | Jul 1994 |
| 24 | Pices Energy Production Co. | Alva, OK 73717-9512 | Oil & Gas Operator | Apr 2014 |
| 25 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 26 | Plenergy Dev LTD | | Oil & Gas Operator | Jun 2004 |
| 27 | Pollok Energy LLC | Tulsa, OK 74159 | Oil & Gas Operator | Mar 2025 |
| 28 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 29 | Premier Resources LTD | Denver, CO 80237 | Oil & Gas Operator | Jul 2002 |
| 30 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 31 | Presley Petroleum Company | Newport Beach, CA 92658-2200 | Oil & Gas Operator | Oct 1999 |
| 32 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Jun 2025 |
| 33 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 34 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 35 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 36 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 37 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 38 | Pulis Thomas A Or Kathryn A Dba Pulis Production | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2025 |
| 39 | Pyramid Oil Of America, Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2025 |