| 24501 | Reservoir Research Corp | | Oil Operator | Dec 2009 |
| 24502 | Resetarits, David W. | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 24503 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 24504 | Resolute Natural Resources Co., LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2017 |
| 24505 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 24506 | Resolve Energy Corp | | Gas Operator | May 2009 |
| 24507 | Resonance Exploration (North Dakota) LLC | | Oil & Gas Operator | Jun 2025 |
| 24508 | Resource Acquisitions Corp. | | Oil & Gas Operator | Dec 2002 |
| 24509 | Resource America Inc | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2011 |
| 24510 | Resource Dev Technology LLC | Morrison, CO 80465-5020 | Oil & Gas Operator | Jan 2017 |
| 24511 | Resource Development Technology LLC | Morrison, CO 80465 | Oil & Gas Operator | Oct 2020 |
| 24512 | Resource Development, Inc. | Stroud, OK 74079 | Oil & Gas Operator | Feb 2007 |
| 24513 | Resource Energy Can-Am LLC | | Oil & Gas Operator | May 2022 |
| 24514 | Resource Energy Technologies, LLC | | Oil & Gas Operator | Dec 2017 |
| 24515 | Resource Engineering | | Gas Operator | Nov 2024 |
| 24516 | Resource Enterprises Inc | Salt Lake City, UT 84108 | Gas Operator | Dec 1990 |
| 24517 | Resource Expl & Prod, Inc. | Salado, TX 76571 | Oil & Gas Operator | Jul 2025 |
| 24518 | Resource Management Company | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2015 |
| 24519 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2025 |
| 24520 | Resource Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jul 1997 |
| 24521 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 24522 | Resource Production Inc | Bridgeport, CT 06604 | Oil & Gas Operator | Dec 1993 |
| 24523 | Resource Rock Services, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2018 |
| 24524 | Resource Securities Corp. | | Oil & Gas Operator | Mar 2005 |
| 24525 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 24526 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 24527 | Resources America, Inc | | Oil Operator | Jan 1983 |
| 24528 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 24529 | Resources Operating Co Inc | Rogers, AR 72756 | Oil & Gas Operator | Apr 2025 |
| 24530 | Ress Production Co. | Farmington, NM 87499 | Oil & Gas Operator | Jul 2025 |
| 24531 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Mar 2025 |
| 24532 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Jul 2025 |
| 24533 | Restore Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 24534 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 24535 | Retama Oil Corporation | Uvalde, TX 78801 | Oil & Gas Operator | Jul 2025 |
| 24536 | Retamco Operating Inc | Red Lodge, MT 59068 | Oil & Gas Operator | May 2025 |
| 24537 | Retsal Drilling Co. | | Oil & Gas Operator | Jan 1984 |
| 24538 | Retsal Production Company | | Oil & Gas Operator | Mar 1986 |
| 24539 | Return Oil Corp | Oil City, PA 16301-0564 | Oil Operator | Dec 1992 |
| 24540 | Reubin Collins Dba RCJ Enterprises | Hobbs, NM 882416055 | Oil & Gas Operator | May 2009 |
| 24541 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 24542 | Reunion Resources, Inc. | | Oil & Gas Operator | Dec 2015 |
| 24543 | Reunion Titan, Inc. | | Oil & Gas Operator | Jan 2017 |
| 24544 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Dec 2019 |
| 24545 | Revard Oil And Gas Properties Inc | | Oil & Gas Operator | Apr 2025 |
| 24546 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Jul 2025 |
| 24547 | Reveille Resources | Houston, TX 77084 | Oil & Gas Operator | Apr 2011 |
| 24548 | Reveille Resources (Texas), Inc. | Houston, TX 77084 | Oil & Gas Operator | Jan 2013 |
| 24549 | Revel Oil & Gas, Inc. | | Oil & Gas Operator | Feb 2001 |
| 24550 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 24551 | Revelation Oil & Gas LLC | Dumas, TX 79029 | Oil & Gas Operator | Jul 2025 |
| 24552 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Apr 2025 |
| 24553 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 24554 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2025 |
| 24555 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 24556 | Revier, J. B. Prod. Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 1996 |
| 24557 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Apr 2025 |
| 24558 | Revilo Exploration LLC | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 24559 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 24560 | Revitalize Resources Operating, Inc | Evansville, IN 47708 | Oil Operator | Dec 2023 |
| 24561 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 24562 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 24563 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 24564 | Rex Drummond | Conneaut, OH 44030-9678 | Oil & Gas Operator | Dec 2019 |
| 24565 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 24566 | Rex Energy Rockies LLC | State College, PA 16801 | Oil & Gas Operator | May 2013 |
| 24567 | Rex Oil, A Texas Partnership | Hondo, TX 78861 | Oil & Gas Operator | May 2003 |
| 24568 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 24569 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 24570 | Rey Oil & Gas, Inc | Oneida, TN 37841 | Oil Operator | Dec 2023 |
| 24571 | Reynolds Drill Coinc/Rosbottom | | Oil & Gas Operator | Jan 1990 |
| 24572 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 24573 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 24574 | Reynolds Exploration Co. | | Oil Operator | Dec 1986 |
| 24575 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 24576 | Reynolds Mining Corp | | Oil & Gas Operator | Aug 1968 |
| 24577 | Reynolds Oil Co. | | Oil Operator | Nov 2005 |
| 24578 | Reynolds Res, Inc | Owensboro, KY 42303 | Oil & Gas Operator | Dec 2023 |
| 24579 | Reynolds, Dan Company | Camden, AR 71701 | Oil Operator | Jan 2025 |
| 24580 | Reynolds, E. P., Jr. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 24581 | Reynolds, J David Company | Camden, AR 71701 | Oil & Gas Operator | Dec 2024 |
| 24582 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2025 |
| 24583 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 24584 | Reyrock Oil, LLC | Limestone, NY 14753 | Oil & Gas Operator | Dec 2024 |
| 24585 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 24586 | RFB Exploration | | Oil Operator | Feb 1981 |
| 24587 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | Jul 2025 |
| 24588 | RG Exploration, LLC | Midland, TX 78705 | Oil & Gas Operator | Feb 2020 |
| 24589 | RGN Company, Inc. | Stockton, KS 67669 | Oil Operator | Jan 2025 |
| 24590 | RGX Energy LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2019 |
| 24591 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Mar 2025 |
| 24592 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Jul 2025 |
| 24593 | RHC Energy (USA) LLC | Houston, TX 77027 | Oil Operator | Jul 2025 |
| 24594 | RHDK Oil & Gas LLC/Dba Red Hill | Dover, OH 44622-9801 | Oil & Gas Operator | Dec 2024 |
| 24595 | Rhea, Andrew | Galva, KS 67443 | Oil & Gas Operator | Nov 2024 |
| 24596 | Rheaco Oil Company, LTD. | Sourlake, TX 77659 | Oil Operator | Jul 2025 |
| 24597 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 24598 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |
| 24599 | Rhine Oil Co LLC | Dalton, OH 44618 | Oil & Gas Operator | Dec 1999 |
| 24600 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Apr 2025 |