| 1 | P & M Petroleum Management | Denver, CO BAD ADDR | Oil & Gas Operator | Apr 2010 |
| 2 | P-2 Oil | Vernal, UT 84078 | Oil & Gas Operator | Jul 2000 |
| 3 | Pacific Natural Gas Explor | | Oil & Gas Operator | Dec 1974 |
| 4 | Pacific Trans Supply | Vernal, UT 84078 | Oil & Gas Operator | Jul 1987 |
| 5 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 6 | Paiute Oil & Mining Corp | Salt Lake City, UT 84117 | Oil & Gas Operator | Jun 1989 |
| 7 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 8 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 9 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 10 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 11 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 12 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 13 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 14 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 15 | Phillips Oil Company | Casper, WY 82602 | Oil & Gas Operator | Sep 1986 |
| 16 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 17 | Phoenix Hydro Oper Corp | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 18 | Phoenix Hydrocarbons Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 19 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Jul 2024 |
| 20 | PO&G Operating, LLC (Pogo) | Houston, TX 77057 | Oil & Gas Operator | Sep 2024 |
| 21 | Polumbus Corp, The | Denver, CO 80202 | Oil & Gas Operator | Sep 1982 |
| 22 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 23 | Priority Oil & Gas LLC | Lakewood, CO 80227 | Gas Operator | Dec 2019 |