| 1 | P & P Producing Inc | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 2 | P F Beeler LLC | Norman, OK 73072-7522 | Oil & Gas Operator | Oct 2024 |
| 3 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 4 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 5 | Pal Kids Inc | Coronado, CA 92118 | Oil & Gas Operator | Nov 2000 |
| 6 | Paloma Operating Co Inc | Houston, TX 77002-5220 | Oil & Gas Operator | Dec 2023 |
| 7 | Panda Resources Inc | Tulsa, OK 74137-3536 | Oil & Gas Operator | Feb 1994 |
| 8 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 9 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 10 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 11 | Panhandle Oilfield Service Companies Inc | Liberal, KS 67905-1256 | Oil Operator | Sep 2000 |
| 12 | Panhandle Trading Company | Houston, TX 77251-1642 | Oil & Gas Operator | Jun 2003 |
| 13 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2024 |
| 14 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 15 | Park Avenue Exploration Corp | Oklahoma City, OK 73102-5604 | Oil & Gas Operator | Sep 2011 |
| 16 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 17 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 18 | Parwest Land Exploration, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 19 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 20 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 21 | Patrick R J & Jack H Vaughn | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2002 |
| 22 | Patrick RJ Operating Co | Liberal, KS 67905-1157 | Oil & Gas Operator | Nov 2014 |
| 23 | Patton Dale | Stillwater, OK 74074 | Oil & Gas Operator | Dec 2011 |
| 24 | Payne Exploration Company | Crescent, OK 73028 | Oil & Gas Operator | Sep 2024 |
| 25 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 26 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 27 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 28 | Pet-Ex, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2024 |
| 29 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 30 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 31 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Dec 2024 |
| 32 | Petro-Management Assoc., Inc. | Edmond, OK 73083-2346 | Oil & Gas Operator | Jun 2007 |
| 33 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 34 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 35 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 36 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 37 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 38 | Philcon Development Co. | Amarillo, TX 79101 | Oil & Gas Operator | Sep 2014 |
| 39 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Dec 2024 |
| 40 | Plains Liquids Transport Inc | Houston, TX 77002 | Oil & Gas Operator | May 1996 |
| 41 | Plains Marketing & Trans Inc | Houston, TX 76002 | Oil & Gas Operator | Oct 1998 |
| 42 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 43 | Poblano Energy LLC | Houston, TX 77024-2217 | Oil & Gas Operator | Aug 2024 |
| 44 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 45 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2024 |
| 46 | Polaris Energy Dev Co | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2000 |
| 47 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 48 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 49 | PRDJ Cockrum Enterprises Inc | Okemah, OK 74859-5126 | Oil & Gas Operator | Mar 2022 |
| 50 | Premier Resources LTD | Denver, CO 80237 | Oil & Gas Operator | Jul 2002 |
| 51 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2024 |
| 52 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 53 | Primary Natural Resources III LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Oct 2024 |
| 54 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 55 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 56 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 57 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 58 | Princess Three Corporation | Henderson, TX 75653 | Oil & Gas Operator | Apr 2020 |
| 59 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Dec 2024 |
| 60 | Pringle Operating Co. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2015 |
| 61 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 62 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 63 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Dec 2024 |
| 64 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 65 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Oct 2024 |
| 66 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |