| 8501 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2026 |
| 8502 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2025 |
| 8503 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 8504 | Pioneer Natural Res. (GPC), Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1998 |
| 8505 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2026 |
| 8506 | Pioneer Resources | Jefferson, CO 80456 | Oil Operator | Dec 2009 |
| 8507 | Pioneer Resources Prod LP | Irving, TX 75039-3745 | Oil & Gas Operator | Feb 2005 |
| 8508 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 8509 | Pipeline Management, Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2002 |
| 8510 | Pipeline Resources, Inc. | Corpus Christ, TX 78412 | Gas Operator | Aug 2003 |
| 8511 | Pitchfork Investments, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Apr 2026 |
| 8512 | Pitchfork Oil & Gas, Inc. | Orchard, TX 77464 | Oil & Gas Operator | Apr 2026 |
| 8513 | Pitco Investments, LTD. | Scottsdale, AZ 85261 | Oil & Gas Operator | Jan 2013 |
| 8514 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 8515 | Pittencrieff (Gulf Coast), Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 1998 |
| 8516 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 8517 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Apr 2026 |
| 8518 | Pitts, Charles Company | Abilene, TX 79604 | Oil & Gas Operator | Dec 1997 |
| 8519 | PK Gath & Oilfield SVCS, Inc. | Cleburne, TX 76031 | Oil & Gas Operator | Apr 2026 |
| 8520 | PK Petroleum LLC | Pampa, TX 79065 | Oil & Gas Operator | Apr 2026 |
| 8521 | PKS Energy Savers Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 1994 |
| 8522 | Place Oil And Gas Co. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2026 |
| 8523 | Placer Oil Co. | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2008 |
| 8524 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 8525 | Placid Operating, LLC | Dallas, TX 75230 | Oil & Gas Operator | Jul 2021 |
| 8526 | Plains Exploration & Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Jul 2013 |
| 8527 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 8528 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 8529 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 8530 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 8531 | Planetierra Three Partnership | Sunray, TX 79086 | Oil & Gas Operator | Apr 2026 |
| 8532 | Plano Petroleum Corporation | McKinney, TX 75070 | Oil & Gas Operator | Dec 2019 |
| 8533 | Plantation Operating Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2026 |
| 8534 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 8535 | Plateau Energy, LLC | Smyer, TX 79367 | Oil & Gas Operator | Dec 2024 |
| 8536 | Platform Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 8537 | Platinum Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 8538 | Platinum Oil & Gas, L.L.C. | San Juan, TX 78589 | Oil & Gas Operator | Apr 2026 |
| 8539 | Platinum Properties Inc. | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 8540 | Playa Minerals & Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2003 |
| 8541 | Plemons Enterprises | Borger, TX 79008 | Oil & Gas Operator | Aug 1998 |
| 8542 | Plo'S Oil & Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Apr 2026 |
| 8543 | Plover Production Company | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2006 |
| 8544 | PLR Energy, LLC | Houston, TX 77079 | Oil Operator | May 2018 |
| 8545 | Plumb Resources, Inc. | Houston, TX 77096 | Oil & Gas Operator | Jun 1998 |
| 8546 | Plumley, M. C. & Associates | Borger, TX 79008 | Oil & Gas Operator | Apr 2026 |
| 8547 | PM Oil & Gas, Inc. | San Angelo, TX 76903 | Oil Operator | Apr 2026 |
| 8548 | PMB Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Apr 2026 |
| 8549 | Pmi Energy Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2002 |
| 8550 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 8551 | PMR Energy, LLC | San Antonio, TX 78209 | Oil Operator | Apr 2026 |
| 8552 | PN Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2003 |
| 8553 | PNG Gathering, LLC | Wellington, TX 79095 | Oil & Gas Operator | Dec 2024 |
| 8554 | PNG Operating Company | Oklahoma City, OK 73172 | Oil & Gas Operator | Apr 2026 |
| 8555 | PNG Production, LLC | Wellington, TX 79095 | Oil & Gas Operator | Apr 2026 |
| 8556 | PNP Operating Company LLC | San Antonio, TX 78230 | Oil Operator | Apr 2026 |
| 8557 | Pobres Incorporated | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2008 |
| 8558 | Poco LLC | Houston, TX 77270 | Oil & Gas Operator | Apr 2026 |
| 8559 | Poco Oil Co. | Houston, TX 77069 | Oil & Gas Operator | Mar 1997 |
| 8560 | Poff, H. Bryan | Fort Worth, TX 76103 | Oil & Gas Operator | Mar 2008 |
| 8561 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 8562 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 8563 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 8564 | Pogue, Randall R. | Ada, OK 74820 | Oil & Gas Operator | May 2003 |
| 8565 | Point Energy Partners Petro, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 8566 | Polaris Enterprises Inc | Houston, TX 77057 | Oil & Gas Operator | Oct 1998 |
| 8567 | Polaris Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 8568 | Polaris Production Corp. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 8569 | Polk Petroleum, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 8570 | Pomykal, Verde Oil Co | Brenham, TX 77833 | Oil & Gas Operator | Apr 2026 |
| 8571 | Ponderosa Oil & Gas, LLC | Houston, TX 77008 | Oil & Gas Operator | Apr 2026 |
| 8572 | Ponderosa TX Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2026 |
| 8573 | Ponta E&P LLP | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 8574 | Pontotoc Oil Corp. | Midland, TX 79702 | Oil & Gas Operator | Feb 1996 |
| 8575 | Pony Creek Operating LLC. | Flower Mound, TX 75028 | Oil Operator | Apr 2026 |
| 8576 | Pony Express Corporate Trust | Aledo, TX 76008 | Oil & Gas Operator | Apr 2026 |
| 8577 | Pony Oil Company | Borger, TX 79008 | Oil & Gas Operator | Jul 2001 |
| 8578 | Pool Operating Corporation | Lago VIsta, TX 78645 | Oil & Gas Operator | Oct 2016 |
| 8579 | Pool, Lloyd Operating | Sandia Park, NM 87047 | Gas Operator | Dec 2013 |
| 8580 | Poor Boy Operating Co. | Lubbock, TX 79403 | Oil Operator | Jan 2022 |
| 8581 | Pop Operating Company | Denton, TX 76202 | Oil & Gas Operator | Apr 2026 |
| 8582 | Porosity Oil LLC | Imperial, TX 79743 | Oil Operator | Apr 2026 |
| 8583 | Portal Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 8584 | Portana Properties LLC | McKinney, TX 75072 | Oil Operator | Apr 2026 |
| 8585 | Porter Operating Company, L.L.C. | Pampa, TX 79066 | Oil & Gas Operator | Apr 2026 |
| 8586 | Porter, E. J. | Mingus, TX 76463 | Gas Operator | Jan 2011 |
| 8587 | Porter, James W. | Houston, TX 77240 | Oil & Gas Operator | Oct 1993 |
| 8588 | Porter, James W. Special | Blanco, TX 78606 | Oil & Gas Operator | Apr 2026 |
| 8589 | Portfolio Oil Corporation | Oklahoma City, OK 73119 | Oil & Gas Operator | May 2013 |
| 8590 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 8591 | Post Oak Operating, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2026 |
| 8592 | Post, George P. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2026 |
| 8593 | Potato Creek, L.L.C. | Edna, KS 67342 | Oil & Gas Operator | Dec 2025 |
| 8594 | Poteet Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 1994 |
| 8595 | Powco Oil & Gas Co. | Athens, TX 75751 | Oil & Gas Operator | Feb 1995 |
| 8596 | Powder River Resources, LLC | Archer City, TX 76351 | Oil & Gas Operator | Apr 2026 |
| 8597 | Powell & Brown | Denver City, TX 79323 | Oil & Gas Operator | Mar 2008 |
| 8598 | Powell Properties, Inc. | Los Altos, CA 94024 | Oil & Gas Operator | Apr 2026 |
| 8599 | Powell, A. Brandt | Coleman, TX 76834 | Oil & Gas Operator | Mar 1999 |
| 8600 | Powell, A. Brandt Co. | Hawley, TX 79525 | Oil & Gas Operator | Apr 2026 |