| 1 | P & P Producing Inc | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 2 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 3 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 4 | Pacific Enterprises Royalty Co | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 5 | Paluca Petroleum Inc | Holdenville, OK 74848 | Oil & Gas Operator | Jun 2025 |
| 6 | Panadero Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2002 |
| 7 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 8 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | Jun 2025 |
| 9 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 10 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 11 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 12 | Parkway Petroleum, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Jul 1997 |
| 13 | Passmore Robert W | Ada, OK 74820-5501 | Oil & Gas Operator | May 2022 |
| 14 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 15 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 16 | Pauls Valley Disposal LLC | Kingston, OK 73439-2130 | Oil Operator | Mar 2015 |
| 17 | Payne Exploration Company | Crescent, OK 73028 | Oil & Gas Operator | Jun 2025 |
| 18 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 19 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 20 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 21 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 22 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Jul 2025 |
| 23 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 24 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Jul 2025 |
| 25 | Perkins Production Company Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2006 |
| 26 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Jun 2025 |
| 27 | Pet-Ex, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 28 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 29 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 30 | Petroleum Exploration Company LTD LP | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 31 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 32 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 33 | Pharoah Bob | Maysville, OK 73057 | Oil & Gas Operator | Jul 1994 |
| 34 | Phoenix Petrocorp, Inc. | McKinney, TX 75070 | Oil & Gas Operator | Jul 2025 |
| 35 | Phoenix Production Inc | Burneyville, OK 73430-2158 | Oil & Gas Operator | Feb 2025 |
| 36 | Pierco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Oct 2025 |
| 37 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 38 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Oct 2025 |
| 39 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 40 | Pixley Carlis D | Marlow, OK 73055 | Oil & Gas Operator | Sep 1999 |
| 41 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 42 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 43 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2025 |
| 44 | Plummer Energy Inc | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Nov 2016 |
| 45 | Pogue Randall | Ada, OK 74821-1547 | Oil & Gas Operator | Apr 2014 |
| 46 | Polaris Energy Dev Co | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2000 |
| 47 | Poorboy Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2022 |
| 48 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Jun 2025 |
| 49 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 50 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 51 | Powerline Energy Corp. | Arlington, TX 76015 | Oil & Gas Operator | Oct 2025 |
| 52 | Premier Oil & Gas LLC | Blanchard, OK 73010-2010 | Oil Operator | Dec 2022 |
| 53 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 54 | Preston Carter Oil Company | Davis, OK 73030 | Oil & Gas Operator | Jun 2025 |
| 55 | Pri Producing Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 56 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 57 | Prime Energy Corp | Charleston, WV 25301-1707 | Oil & Gas Operator | Sep 2015 |
| 58 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 59 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 60 | Prince Brothers Drilling Co | Electra, TX 76360 | Oil & Gas Operator | Apr 2015 |
| 61 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 62 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Oct 2025 |
| 63 | Prompt Operating LLC | Velma, OK 73491 | Oil Operator | May 2025 |
| 64 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 65 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jun 2025 |
| 66 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Jul 2025 |
| 67 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |
| 68 | Pulliam Melvin | Mannford, OK 74044 | Oil & Gas Operator | Jul 2019 |