| 1 | P I C Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jan 2013 |
| 2 | Pace Exploration LLC | Tulsa, OK 74170-1923 | Oil & Gas Operator | Dec 2023 |
| 3 | Palm Oil & Gas Company | Sedona, AZ 86340-4808 | Oil & Gas Operator | Feb 2024 |
| 4 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | May 2024 |
| 5 | Paradigm Twenty LLC | | Oil & Gas Operator | Jan 2024 |
| 6 | Paragon Production Company | Edmond, OK 73013-5051 | Oil & Gas Operator | Feb 2021 |
| 7 | Paramount Petroleum Corp | Dallas, TX 75374 | Oil Operator | Dec 2000 |
| 8 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 9 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 10 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 11 | PBT Enterprises Inc | Garber, OK 73738-0262 | Oil & Gas Operator | May 2023 |
| 12 | PCX Corporation | | Oil & Gas Operator | Feb 1994 |
| 13 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 14 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 15 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 16 | Performance Petroleum Company LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Jan 2024 |
| 17 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Feb 2024 |
| 18 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 19 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 20 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2024 |
| 21 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | May 2024 |
| 22 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | May 2024 |
| 23 | Phillips Oil Operating Co | Enid, OK 73703-4921 | Oil & Gas Operator | May 2019 |
| 24 | Phillips Operating Co. | Mineral Wells, TX 76067 | Oil & Gas Operator | Jan 2013 |
| 25 | Pierce G R Oil Properties Inc | Oklahoma City, OK 73106 | Oil Operator | Feb 1999 |
| 26 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 27 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2024 |
| 28 | Plains Marketing & Trans Inc | Houston, TX 76002 | Oil & Gas Operator | Oct 1998 |
| 29 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 30 | Polaris Petroleum Operations LLC | Branson West, MO 65737 | Oil & Gas Operator | May 2019 |
| 31 | Prairie Exploration Company | Norman, OK 73070-4036 | Oil & Gas Operator | Mar 2011 |
| 32 | Prairie Wind Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 33 | Pressure Pumping Services LLC | Blackwell, OK 74631 | Oil & Gas Operator | Jan 2024 |
| 34 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 35 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 36 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2024 |
| 37 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 38 | Pullers Oil Company LLC | Blackwell, OK 74631-0323 | Oil & Gas Operator | Feb 2024 |