| 701 | Regal Development Inc. | Eldorado, TX 76936 | Gas Operator | Jul 1996 |
| 702 | Regal Energy Corporation | Rhome, TX 76078 | Oil & Gas Operator | Jul 2025 |
| 703 | Regal Energy Operating, L.L.C. | Plano, TX 75024 | Oil & Gas Operator | Jul 2025 |
| 704 | Regal Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2008 |
| 705 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 706 | Regal Petroleum Services Inc | Euless, TX 76039-1127 | Oil & Gas Operator | May 2015 |
| 707 | Regency Energy, Inc. | Crystal City, TX 78839 | Oil & Gas Operator | Jul 2025 |
| 708 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 709 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 710 | Regency Gas Gathrng & Proc LLC | | Oil Operator | Sep 2007 |
| 711 | Regency Intrastate Gas LLC | | Oil Operator | Feb 2009 |
| 712 | Regency Midcon Gas LLC | Dallas, TX 75201 | Oil Operator | Oct 2014 |
| 713 | Regency Pet Co Of NM | Irving, TX 75038 | Oil & Gas Operator | Feb 2000 |
| 714 | Regency Petroleum Co. | Irving, TX 75016 | Oil & Gas Operator | Aug 2002 |
| 715 | Regency Petroleum Co. Of New Mex | Coppell, TX 75019 | Oil & Gas Operator | Apr 2008 |
| 716 | Regency Petroleum Inc | Jones, OK 73049-8724 | Oil & Gas Operator | Mar 1999 |
| 717 | Regeneration Energy, Corporation | Artesia, NM 88210 | Oil & Gas Operator | Mar 2023 |
| 718 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 719 | Regina Oil & Gas LLC | Regina, NM 87046 | Oil & Gas Operator | May 2025 |
| 720 | Regional Energy Corporation | Temple, TX 76503-1733 | Oil Operator | Mar 1996 |
| 721 | Regions Energy LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2016 |
| 722 | Regions Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 723 | Rego Development Company, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2002 |
| 724 | Reh Energy, Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Jul 2025 |
| 725 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 726 | Rehoboth Oil & Gas LLC | Baytown, TX 77521 | Oil Operator | Oct 2011 |
| 727 | Reichard Equip Co | New Bethlehem, PA 16242-1936 | Gas Operator | Dec 2021 |
| 728 | Reichlinger Business Services | | Oil Operator | Apr 2014 |
| 729 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2025 |
| 730 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Apr 2025 |
| 731 | Reif Oil & Gas Company LLC | Hoisington, KS 67544 | Oil Operator | Aug 2010 |
| 732 | Reif Oil Operati | | Oil Operator | Nov 1988 |
| 733 | Reign Operating LLC | Oklahoma City, OK 73114 | Oil Operator | Apr 2025 |
| 734 | Reilly Oil Company, Inc. | Wakeeney, KS 67672 | Oil Operator | Mar 2025 |
| 735 | Reilly Oil E & P | | Oil Operator | Mar 2025 |
| 736 | Reilly, K. L. | Huntsville, TX 77342 | Oil Operator | Dec 2004 |
| 737 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Jul 2025 |
| 738 | Reinecke Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2018 |
| 739 | Reinke Brad L | Chardon, OH 44024 | Oil & Gas Operator | Dec 2024 |
| 740 | Reisdorf, Christine A. | North Java, NY 14113 | Gas Operator | Dec 2024 |
| 741 | Reishman Oil & Gas | | Gas Operator | Dec 2021 |
| 742 | Reiss, Kenneth G. | Cuba, NY 14727 | Gas Operator | Dec 2024 |
| 743 | Reita Oil Company | | Oil & Gas Operator | Jan 1987 |
| 744 | Rejiss Assoc | Braddock, PA 15104-1948 | Oil & Gas Operator | Dec 2009 |
| 745 | Rejiss Assoc Holdings LLC | Braddock, PA 15104-1948 | Gas Operator | Dec 2024 |
| 746 | Relative Energy, Inc. | Lindsborg, KS 67456 | Oil Operator | Nov 2019 |
| 747 | Relco Exploration Co., Inc. | | Gas Operator | Aug 1987 |
| 748 | Reliable Oil Industries Inc | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2024 |
| 749 | Reliable Prod Service Inc. | | Oil Operator | Mar 2007 |
| 750 | Reliable Production LLC | Farmington, NM 87401 | Oil & Gas Operator | May 2025 |
| 751 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 752 | Reliance Energy, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 753 | Reliance Oil And Gas, Inc. | Austin, TX 78748 | Oil Operator | Jun 2012 |
| 754 | Reliance Oil Corp | Charlottesville, VA 22906 | Oil & Gas Operator | Dec 1988 |
| 755 | Reliance Oil, LLC | Gridley, KS 66852 | Oil Operator | Feb 2025 |
| 756 | Reliance Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 757 | Reliance Petroleum Corporation | | Oil & Gas Operator | Oct 2018 |
| 758 | Reliance Resources Inc | Houston, TX 77007 | Gas Operator | Jun 2012 |
| 759 | Reliance TR-JV | | Gas Operator | Apr 1988 |
| 760 | Reliance Trust | | Oil Operator | Dec 1960 |
| 761 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 762 | Reliance Trusts HS | | Gas Operator | Feb 1989 |
| 763 | Reliance Well Service, Inc. | | Oil & Gas Operator | Apr 1997 |
| 764 | Reliant Energy Field SVS Inc. | | Oil Operator | Sep 2002 |
| 765 | Reliant Exploration And Production LLC | Midland, TX 79707 | Gas Operator | Mar 2015 |
| 766 | Reliant Exploration, LTD. | Houston, TX 77060 | Oil & Gas Operator | Sep 2002 |
| 767 | Reliford, Jimmy | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 768 | Reliford, Jimmy DRLG Co | Columbia, KY 42728 | Oil & Gas Operator | Dec 2019 |
| 769 | Reliford, Judy | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 770 | Relm Energy Inc | Morris, OK 74445-2227 | Oil & Gas Operator | Feb 2021 |
| 771 | Relmm Corporation | | Oil & Gas Operator | May 1980 |
| 772 | Relmm CSC/Imc | | Oil & Gas Operator | Apr 1977 |
| 773 | Remarkable Operating Co. | Pampa, TX 79065 | Gas Operator | Jul 2019 |
| 774 | Remco Ener Corpo | | Oil & Gas Operator | Dec 1994 |
| 775 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 776 | Remco Oil & Gas Production,Inc. | Rio Grande Ci, TX 78582 | Oil & Gas Operator | Nov 2021 |
| 777 | Remington Capital Holdings Inc | North East, PA 16428-0026 | Oil & Gas Operator | Dec 2022 |
| 778 | Remington Financ | | Oil Operator | Oct 1994 |
| 779 | Remington Oil | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 780 | Remington Oil And Gas Corporation | | Oil & Gas Operator | Sep 2009 |
| 781 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
| 782 | Remnant Group Inc | Pittsburgh, PA 15238-1359 | Oil & Gas Operator | Dec 2013 |
| 783 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 784 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 785 | Remo, Inc. | Odessa, TX 79760 | Oil & Gas Operator | May 2003 |
| 786 | Remora Management, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Jul 2025 |
| 787 | Remora Operating Ca LLC | | Oil & Gas Operator | Dec 2020 |
| 788 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 789 | Remuda Energy Development LLC | Billings, MT 59104 | Oil & Gas Operator | May 2025 |
| 790 | Remuda Oil & Gas Corp. | | Oil & Gas Operator | Aug 1987 |
| 791 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Jul 2025 |
| 792 | Renaissance Offshore, LLC | | Oil & Gas Operator | Mar 2023 |
| 793 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 794 | Renaissance Petroleum LLC | | Oil & Gas Operator | Apr 2025 |
| 795 | Renaud Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 796 | Rence Guy A | | Oil Operator | Jan 2013 |
| 797 | Renco Energy Inc | Calgary, AB T2H 0H6 | Oil & Gas Operator | Feb 2025 |
| 798 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 799 | Reneau Oil Co. | Shamrock, TX 79079 | Oil & Gas Operator | Jul 2025 |
| 800 | Reneau, James R. | Shamrock, TX 79079 | Gas Operator | Oct 2001 |