| 1 | P-2 Exploration Co. | Amarillo, TX 79124 | Oil & Gas Operator | Feb 2005 |
| 2 | Pablo Energy II, LLC | Amarillo, TX 79105 | Oil & Gas Operator | Jan 2026 |
| 3 | Pablo Energy, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2005 |
| 4 | Pampa Water Disposal, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Mar 2026 |
| 5 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 6 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2026 |
| 7 | Pantex Oil & Gas LLC | Ranger, TX 76470 | Oil & Gas Operator | Jul 2018 |
| 8 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 9 | Paramount Producing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1996 |
| 10 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 11 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 12 | Petco Energy Corporation | Hinsdale, IL 60521 | Oil & Gas Operator | Mar 2026 |
| 13 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Dec 2025 |
| 14 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Mar 2026 |
| 15 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Mar 2026 |
| 16 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 17 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Mar 2026 |
| 18 | PG-M International Operating,LLC | Borger, TX 79008 | Oil & Gas Operator | Mar 2026 |
| 19 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 20 | Plains Exploration & Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Jul 2013 |
| 21 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 22 | PNG Gathering, LLC | Wellington, TX 79095 | Oil & Gas Operator | Dec 2024 |
| 23 | PNG Production, LLC | Wellington, TX 79095 | Oil & Gas Operator | Mar 2026 |
| 24 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 25 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2026 |
| 26 | Ponderosa TX Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Mar 2026 |
| 27 | Pool, Lloyd Operating | Sandia Park, NM 87047 | Gas Operator | Dec 2013 |
| 28 | Porter Operating Company, L.L.C. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2026 |
| 29 | Prairie Energy Company | Fort Worth, TX 76185 | Oil & Gas Operator | Mar 2003 |
| 30 | Prairie Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Jan 2017 |
| 31 | Premier Energy, Inc. | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 32 | Price Oil & Gas Co. | Houston, TX 77254 | Oil & Gas Operator | Feb 2002 |
| 33 | Prime Operating Company | Midland, TX 79705 | Oil & Gas Operator | Mar 2026 |
| 34 | Producers Operating Co Inc | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2026 |
| 35 | Production Consultants, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Feb 2017 |
| 36 | Pruett, Cecil | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 37 | Pursley Gas Company | Pampa, TX 79066 | Gas Operator | Mar 2026 |
| 38 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |