| 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 Energy & Mining Company | Reno, NV 89511 | Oil & Gas Operator | Sep 2022 |
| 4 | Pacific Natural Gas Explor | | Oil & Gas Operator | Dec 1974 |
| 5 | Pacific Trans Supply | Vernal, UT 84078 | Oil & Gas Operator | Jul 1987 |
| 6 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 7 | Paiute Oil & Mining Corp | Salt Lake City, UT 84117 | Oil & Gas Operator | Jun 1989 |
| 8 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 9 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 10 | Paradox Upstream, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 11 | Parker Energy Tech Inc | Salt Lake City, UT 84171 | Oil Operator | Nov 2013 |
| 12 | Patara Oil & Gas LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2018 |
| 13 | Pease Oil & Gas Company | Grand Junction, CO 81506 | Oil & Gas Operator | May 2000 |
| 14 | Pease, Willard H | Grand Junction, CO 81502 | Gas Operator | May 1995 |
| 15 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 16 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 17 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 18 | Perfection Oil & Gas Co | | Gas Operator | Sep 1937 |
| 19 | Petral Exploration LLC | Denver, CO 80217-5083 | Oil & Gas Operator | Dec 2001 |
| 20 | Petro Mex, LLC | Farmington, NM 87499 | Oil & Gas Operator | Dec 2025 |
| 21 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
| 22 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 23 | Petrodril Inc | Farmington, NM 87401 | Oil & Gas Operator | Jan 1987 |
| 24 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 25 | Petrovest International | Encino, CA 91436 | Gas Operator | Jun 1982 |
| 26 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 27 | Phelps Dodge Corp | | Gas Operator | Sep 1957 |
| 28 | Phillips Oil Company | Casper, WY 82602 | Oil & Gas Operator | Sep 1986 |
| 29 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 30 | Phillips Petroleum, LLC | Ballard, UT 84066 | Oil & Gas Operator | Dec 2025 |
| 31 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 32 | Phoenix Hydro Oper Corp | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 33 | Phoenix Hydrocarbons Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 34 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Sep 2025 |
| 35 | Pioneer Oil & Gas | South Jordan, UT 84095 | Oil & Gas Operator | Jan 2014 |
| 36 | PO&G Operating, LLC (Pogo) | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 37 | Polumbus Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 1982 |
| 38 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 39 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 40 | Price River Energy, LLC | Houston, TX 77024 | Gas Operator | Nov 2025 |
| 41 | Pride Ventures LLC | Moab, UT 84532 | Oil & Gas Operator | Sep 2025 |
| 42 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Dec 2025 |
| 43 | Priority Oil & Gas LLC | Lakewood, CO 80227 | Gas Operator | Dec 2019 |
| 44 | Producers Operating Co Inc | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2026 |
| 45 | Proven Petroleum, Inc. | Lakewood, CO 80228 | Oil & Gas Operator | Dec 2025 |
| 46 | Pubco Petroleum Corp | Albuquerque, NM 87104 | Oil & Gas Operator | Dec 1981 |
| 47 | Pumpelly, Raphael SR | Pac Palisades, CA 90272 | Oil & Gas Operator | Feb 1991 |
| 48 | Pure Oil Co | | Oil & Gas Operator | Dec 1996 |