| 1 | Percussion Petroleum Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2019 |
| 2 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 3 | Petroleum Exploration Company LTD., Limited P | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2024 |
| 4 | Petroleum Production Management, Inc. | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 5 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 6 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Aug 2024 |
| 7 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 8 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2024 |
| 9 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 10 | Poco Resources LLC | Artesia, NM 88210 | Oil & Gas Operator | Jul 2024 |
| 11 | Primero Operating, Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2022 |
| 12 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 13 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |