| 601 | Osborn Heirs Co | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 602 | Ostrich Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 603 | Owens Pet Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 1995 |
| 604 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 605 | Oxy USA WTP Limited Partnership | Houston, TX 772104294 | Oil & Gas Operator | Dec 2025 |
| 606 | Paladin Energy Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jul 2017 |
| 607 | Palisades Asset Holding Co LLC | Dallas, TX 75201 | Oil & Gas Operator | Aug 2017 |
| 608 | Paloma Permian Assetco, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 609 | Paloma Resources Inc | Roswell, NM 88201 | Oil & Gas Operator | Dec 1998 |
| 610 | Patterson Operating & Pumping Inc Dba/Penerg | Midland, TX 79710 | Oil & Gas Operator | Jul 2018 |
| 611 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 612 | Pbex Operations, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 613 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 614 | Pecos Production Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2005 |
| 615 | Pecos River Op Inc | Roswell, NM 88202 | Oil & Gas Operator | Dec 2020 |
| 616 | Pennzenergy Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 617 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Dec 2025 |
| 618 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 619 | Percussion Petroleum Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2019 |
| 620 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 621 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 622 | Permok Oil Inc | Shawnee Mission, KS 662082110 | Oil & Gas Operator | Feb 2013 |
| 623 | Pete Mills | Midland, TX 79707 | Oil & Gas Operator | Oct 2012 |
| 624 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 625 | Petroleum Exploration Company LTD., Limited | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 626 | Petroleum Production Management Inc | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 627 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 628 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 629 | Phoenix Distributing Corp. | Marlboro, NJ 07746 | Oil & Gas Operator | Mar 2003 |
| 630 | Phoenix Hydrocarbons Operating Corp | Midland, TX 79705 | Oil & Gas Operator | Oct 2022 |
| 631 | PHX Energy, LLC | Artesia, NM 88211 | Oil & Gas Operator | Dec 2025 |
| 632 | Pierce Production Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 633 | Pima Energy, LLC | Knott, TX 79748 | Oil & Gas Operator | Feb 2026 |
| 634 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Sep 2025 |
| 635 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 636 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 637 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 638 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 639 | Platinum Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 640 | Poco Resources LLC | Artesia, NM 88210 | Oil & Gas Operator | Jul 2024 |
| 641 | Pogo Oil & Gas Operating, Inc | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2019 |
| 642 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 643 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 644 | Polaris Production Corp. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 645 | Pontotoc Oil Corp. | Midland, TX 79702 | Oil & Gas Operator | Feb 1996 |
| 646 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 647 | Prairie Sun,Inc. | Roswell, NM 88201 | Oil & Gas Operator | Jun 2003 |
| 648 | Premier Oil & Gas Inc | Richardson, TX 75083 | Oil & Gas Operator | Dec 2025 |
| 649 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2026 |
| 650 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Jan 2026 |
| 651 | Primal Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 652 | Prime Operating Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 653 | Primero Operating, Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2022 |
| 654 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 655 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 656 | Pronghorn Management Corporation | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2026 |
| 657 | Prospective Investment And Trading Co (The) | Tulsa, OK 741702320 | Oil & Gas Operator | Jun 2005 |
| 658 | Providence Energy Servs Inc.-Kelton Op Corp | Andrews, TX 79714 | Oil & Gas Operator | Dec 2025 |
| 659 | Psa Producers | Hobbs, NM 88241 | Oil & Gas Operator | Jun 1995 |
| 660 | Pumpjak Oil Company, LLC | Weatherford, TX 76088 | Oil & Gas Operator | Jun 2018 |
| 661 | Pure Energy Operating, Inc. | Plano, TX 75024 | Oil & Gas Operator | Jul 2012 |
| 662 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 663 | Purvis Oil Corp | Midland, TX 79702 | Oil & Gas Operator | Jul 1994 |
| 664 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 665 | PXP Gulf Coast LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 666 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |
| 667 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 668 | Quality Production Corp | Hobbs, NM BADADDR | Oil Operator | Jan 2002 |
| 669 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Nov 2025 |
| 670 | Quay Valley, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2007 |
| 671 | R B Honeyman Jr | Hobbs, NM 88241 | Gas Operator | Jul 1995 |
| 672 | R S E Partners-I LP | Oklahoma City, OK 731025261 | Oil & Gas Operator | Feb 2000 |
| 673 | Ralph C Bruton | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2007 |
| 674 | Ralph E Williamson | San Antonio, TX 78239 | Oil & Gas Operator | Dec 2013 |
| 675 | Ram Energy LLC | Tulsa, OK 74152 | Oil & Gas Operator | Nov 2025 |
| 676 | Rand Oil & Gas Inc. | Midland, TX BAD ADDR | Oil & Gas Operator | Apr 1996 |
| 677 | Rand Paulson Energy Company | Houston, TX 77040 | Oil & Gas Operator | Oct 1999 |
| 678 | Range Operating New Mexico LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2013 |
| 679 | Ranger 40 Petroleum, LLC | Fairfield, CT 06824 | Oil & Gas Operator | Feb 2026 |
| 680 | Raptor Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 681 | Raven Operating Group, Inc. | Sedalia, CO 80135 | Oil & Gas Operator | Dec 2010 |
| 682 | Raw Oil & Gas, Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Feb 2026 |
| 683 | Ray A Pierce | Midland, TX 79702 | Oil & Gas Operator | Dec 2023 |
| 684 | Ray Westall | Loco Hills, NM 88255 | Oil & Gas Operator | Sep 2012 |
| 685 | Ray Westall Operating, Inc. | Loco Hills, NM 88255 | Oil & Gas Operator | Dec 2025 |
| 686 | Raya Energy Corp. | Austin, TX 78716 | Oil & Gas Operator | Jul 2018 |
| 687 | Raybaw Operating, LLC | Dallas, TX 75204 | Oil & Gas Operator | Dec 2025 |
| 688 | Read & Stevens, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2023 |
| 689 | Red Rock Resources Corporation | Greenwood VIllage, CO 80111 | Oil Operator | Dec 2025 |
| 690 | Redmon Oil Company, Inc., The | Plano, TX 75023 | Oil & Gas Operator | Feb 2026 |
| 691 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 692 | Regency Pet Co Of NM | Irving, TX 75038 | Oil & Gas Operator | Feb 2000 |
| 693 | Regeneration Energy, Corporation | Artesia, NM 88210 | Oil & Gas Operator | Mar 2023 |
| 694 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 695 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 696 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 697 | Remo, Inc. | Odessa, TX 79760 | Oil & Gas Operator | May 2003 |
| 698 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Feb 2026 |
| 699 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 700 | Resolute Natural Resources Co., LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2017 |