| 24401 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 24402 | Resaca Resources, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Nov 2025 |
| 24403 | Research Enterprises, Inc. | | Oil Operator | Jan 1996 |
| 24404 | Research Exploration, LLC | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2018 |
| 24405 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 24406 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 24407 | Reserve Energy Exploration Company | Chagrin Falls, OH 44023 | Gas Operator | Dec 2024 |
| 24408 | Reserve Exploration Co. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2007 |
| 24409 | Reserve Gas Company, Inc. | Alden, NY 14004 | Gas Operator | Dec 2024 |
| 24410 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Nov 2025 |
| 24411 | Reserve Oil & Gas | | Oil & Gas Operator | Feb 1980 |
| 24412 | Reserve Oil & Gas Company | | Oil & Gas Operator | Jul 1981 |
| 24413 | Reserve Oil & Gas, Inc. | Spencer, WV 25276-0000 | Oil & Gas Operator | Dec 2021 |
| 24414 | Reserve Oil Inc. | | Oil & Gas Operator | Jan 1980 |
| 24415 | Reserve Operating Corp. | Houston, TX 77040 | Oil & Gas Operator | Nov 2025 |
| 24416 | Reserve Partners L.L.C. | | Oil & Gas Operator | Feb 2001 |
| 24417 | Reserve Petroleum California Inc. | | Oil & Gas Operator | Aug 2025 |
| 24418 | Reserve Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2008 |
| 24419 | Reservoir Research Corp | | Oil Operator | Dec 2009 |
| 24420 | Resetarits, David W. | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 24421 | Residual Flow Operating, LLC | | Oil Operator | Nov 2025 |
| 24422 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 24423 | Resolute Natural Resources Co., LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2017 |
| 24424 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 24425 | Resolve Energy Corp | | Gas Operator | May 2009 |
| 24426 | Resonance Exploration (North Dakota) LLC | | Oil & Gas Operator | Sep 2025 |
| 24427 | Resource Acquisitions Corp. | | Oil & Gas Operator | Dec 2002 |
| 24428 | Resource America Inc | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2011 |
| 24429 | Resource Dev Technology LLC | Morrison, CO 80465-5020 | Oil & Gas Operator | Jan 2017 |
| 24430 | Resource Development Inc | Stroud, OK 74079 | Oil & Gas Operator | Feb 2007 |
| 24431 | Resource Development Technology, LLC | Morrison, CO 80465 | Oil & Gas Operator | Oct 2020 |
| 24432 | Resource Energy Can-Am LLC | | Oil & Gas Operator | May 2022 |
| 24433 | Resource Energy Technologies, LLC | | Oil & Gas Operator | Dec 2017 |
| 24434 | Resource Engineering | | Gas Operator | Nov 2024 |
| 24435 | Resource Enterprises Inc | Salt Lake City, UT 84108 | Gas Operator | Dec 1990 |
| 24436 | Resource Expl & Prod, Inc. | Salado, TX 76571 | Oil & Gas Operator | Nov 2025 |
| 24437 | Resource Management Company | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2015 |
| 24438 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Nov 2025 |
| 24439 | Resource Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jul 1997 |
| 24440 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 24441 | Resource Production Inc | Bridgeport, CT 06604 | Oil & Gas Operator | Dec 1993 |
| 24442 | Resource Rock Services, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2018 |
| 24443 | Resource Securities Corp. | | Oil & Gas Operator | Mar 2005 |
| 24444 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 24445 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 24446 | Resources America, Inc | | Oil Operator | Jan 1983 |
| 24447 | Resources Invest | | Oil & Gas Operator | Jun 1985 |
| 24448 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 24449 | Resources Operating Co Inc | Rogers, AR 72756 | Oil & Gas Operator | Jul 2025 |
| 24450 | Ress Production Co. | Farmington, NM 87499 | Oil & Gas Operator | Nov 2025 |
| 24451 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Jun 2025 |
| 24452 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Nov 2025 |
| 24453 | Restore Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Nov 2025 |
| 24454 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 24455 | Retama Oil Corporation | Uvalde, TX 78801 | Oil & Gas Operator | Nov 2025 |
| 24456 | Retamco Operating Inc | Red Lodge, MT 59068 | Oil & Gas Operator | Aug 2025 |
| 24457 | Retriever Operating LLC | Midland, TX 79704 | Oil Operator | Nov 2025 |
| 24458 | Retsal Drilling Co. | | Oil & Gas Operator | Jan 1984 |
| 24459 | Retsal Production Company | | Oil & Gas Operator | Mar 1986 |
| 24460 | Return Oil Corp | Oil City, PA 16301-0564 | Oil Operator | Dec 1992 |
| 24461 | Reubin Collins Dba RCJ Enterprises | Hobbs, NM 882416055 | Oil & Gas Operator | May 2009 |
| 24462 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 24463 | Reunion Resources, Inc. | | Oil & Gas Operator | Dec 2015 |
| 24464 | Reunion Titan, Inc. | | Oil & Gas Operator | Jan 2017 |
| 24465 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Dec 2019 |
| 24466 | Revard Oil And Gas Properties Inc | | Oil & Gas Operator | Jun 2025 |
| 24467 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2025 |
| 24468 | Reveille Resources | Houston, TX 77084 | Oil & Gas Operator | Apr 2011 |
| 24469 | Reveille Resources (Texas), Inc. | Houston, TX 77084 | Oil & Gas Operator | Jan 2013 |
| 24470 | Revel Oil & Gas, Inc. | | Oil & Gas Operator | Feb 2001 |
| 24471 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 24472 | Revelation Oil & Gas LLC | Dumas, TX 79029 | Oil & Gas Operator | Nov 2025 |
| 24473 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jul 2025 |
| 24474 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 24475 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Nov 2025 |
| 24476 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 24477 | Revier, J. B. Prod. Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 1996 |
| 24478 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Jul 2025 |
| 24479 | Revilo Exploration LLC | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 24480 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 24481 | Revitalize Resources Operating, Inc | Evansville, IN 47708 | Oil Operator | Dec 2023 |
| 24482 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 24483 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 24484 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 24485 | Rex Drummond | Conneaut, OH 44030-9678 | Oil & Gas Operator | Dec 2019 |
| 24486 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 24487 | Rex Energy Rockies LLC | State College, PA 16801 | Oil & Gas Operator | May 2013 |
| 24488 | Rex Oil, A Texas Partnership | Hondo, TX 78861 | Oil & Gas Operator | May 2003 |
| 24489 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2025 |
| 24490 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 24491 | Rey Oil & Gas, Inc | Oneida, TN 37841 | Oil Operator | Dec 2023 |
| 24492 | Reynolds Drill Coinc/Rosbottom | | Oil & Gas Operator | Jan 1990 |
| 24493 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Nov 2025 |
| 24494 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Nov 2025 |
| 24495 | Reynolds Exploration Co. | | Oil Operator | Dec 1986 |
| 24496 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 24497 | Reynolds Mining Corp | | Oil & Gas Operator | Aug 1968 |
| 24498 | Reynolds Oil Company | | Oil Operator | Nov 2005 |
| 24499 | Reynolds Res, Inc | Owensboro, KY 42303 | Oil & Gas Operator | Dec 2023 |
| 24500 | Reynolds, Dan Company | Camden, AR 71701 | Oil Operator | Jan 2025 |