| 1 | Palmer Petroleum Inc. | Shreveport, LA 71106 | Oil & Gas Operator | May 2024 |
| 2 | Pan-Ok Production Company | | Oil & Gas Operator | Dec 2023 |
| 3 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 4 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | May 2024 |
| 5 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 6 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 7 | Pelico Pipeline, LLC | | Oil Operator | Dec 2023 |
| 8 | Pelto Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 9 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 10 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 11 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 12 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | May 2024 |
| 13 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2024 |
| 14 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 15 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 16 | Petro-Management Inc | | Oil Operator | Dec 1998 |
| 17 | Petrocan, Inc. | | Oil & Gas Operator | Apr 1998 |
| 18 | Petrofunds, Inc & Sunny South | | Oil & Gas Operator | Feb 1984 |
| 19 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 20 | Petrofunds, Inc. & Herd | | Oil & Gas Operator | Mar 1984 |
| 21 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 22 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 23 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2024 |
| 24 | Petrosil Resources Inc. | | Oil & Gas Operator | Oct 1981 |
| 25 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 26 | Phillips Oil Company | Casper, WY 82602 | Oil & Gas Operator | Sep 1986 |
| 27 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 28 | Phoenix - Comco, Inc. | | Oil Operator | Aug 2004 |
| 29 | Phoenix Oper Co Inc-New Amer | | Oil Operator | Jul 1994 |
| 30 | Phoenix Operating Company, Inc. | Shreveport, LA 71161 | Oil & Gas Operator | Mar 2015 |
| 31 | Phoenix Opr Co Inc-Acc | | Oil Operator | Dec 1992 |
| 32 | Phoenix Opr Co Inc-Broadway | | Oil Operator | Dec 1992 |
| 33 | Phoenix Opr Co Inc-Nac | | Oil Operator | Dec 1992 |
| 34 | Phoenix Opr Co Inc-New Amer 85 | | Oil Operator | Dec 1992 |
| 35 | Phoenix Opr Co Inc-Petrovest | | Oil Operator | Dec 1992 |
| 36 | Phoenix Opr Co Inc-RBF 1985 | | Oil Operator | Dec 1992 |
| 37 | Phoenix Opr Co Inc-Shemen | | Oil Operator | Dec 1992 |
| 38 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | May 2024 |
| 39 | Placid Oil Co., Et Al | | Oil & Gas Operator | Jun 1983 |
| 40 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 41 | Plantation Oil Company | | Oil Operator | Dec 2006 |
| 42 | Ploutos, LLC | | Oil Operator | May 2021 |
| 43 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 44 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2015 |
| 45 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Mar 2024 |