| 25001 | Resource Securities Corp. | | Oil & Gas Operator | Mar 2005 |
| 25002 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 25003 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 25004 | Resources America, Inc | | Oil Operator | Jan 1983 |
| 25005 | Resources Invest | | Oil & Gas Operator | Jun 1985 |
| 25006 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 25007 | Resources Operating Co Inc | Enid, OK 73703-1628 | Oil & Gas Operator | Jan 2025 |
| 25008 | Ress Production Co. | Farmington, NM 87499 | Oil & Gas Operator | Apr 2025 |
| 25009 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Dec 2024 |
| 25010 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Apr 2025 |
| 25011 | Restore Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Apr 2025 |
| 25012 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 25013 | Retama Oil Corporation | Uvalde, TX 78801 | Oil & Gas Operator | Apr 2025 |
| 25014 | Retamco Operating Inc | Red Lodge, MT 59068 | Oil & Gas Operator | Feb 2025 |
| 25015 | Retsal Drilling Co. | | Oil & Gas Operator | Jan 1984 |
| 25016 | Retsal Production Company | | Oil & Gas Operator | Mar 1986 |
| 25017 | Return Oil Corp | Oil City, PA 16301-0564 | Oil Operator | Dec 1992 |
| 25018 | Reubin Collins Dba RCJ Enterprises | Hobbs, NM 882416055 | Oil & Gas Operator | May 2009 |
| 25019 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 25020 | Reunion Resources, Inc. | | Oil & Gas Operator | Dec 2015 |
| 25021 | Reunion Titan, Inc. | | Oil & Gas Operator | Jan 2017 |
| 25022 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Dec 2024 |
| 25023 | Revard Oil & Gas Properties Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2025 |
| 25024 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2025 |
| 25025 | Reveille Resources | Houston, TX 77084 | Oil & Gas Operator | Apr 2011 |
| 25026 | Reveille Resources (Texas), Inc. | Houston, TX 77084 | Oil & Gas Operator | Jan 2013 |
| 25027 | Revel Oil & Gas, Inc. | | Oil & Gas Operator | Feb 2001 |
| 25028 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 25029 | Revelation Oil & Gas LLC | Dumas, TX 79029 | Oil & Gas Operator | Apr 2025 |
| 25030 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jan 2025 |
| 25031 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 25032 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2025 |
| 25033 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 25034 | Revier, J. B. Prod. Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 1996 |
| 25035 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Jan 2025 |
| 25036 | Revilo Exploration LLC | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 25037 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 25038 | Revitalize Resources Operating, Inc | Evansville, IN 47708 | Oil Operator | Dec 2023 |
| 25039 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 25040 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 25041 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 25042 | Rex Drummond | Conneaut, OH 44030-9678 | Oil & Gas Operator | Dec 2019 |
| 25043 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 25044 | Rex Energy Rockies LLC | State College, PA 16801 | Oil & Gas Operator | May 2013 |
| 25045 | Rex Oil, A Texas Partnership | Hondo, TX 78861 | Oil & Gas Operator | May 2003 |
| 25046 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 25047 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 25048 | Rey Oil & Gas, Inc | Oneida, TN 37841 | Oil Operator | Dec 2023 |
| 25049 | Reynolds Drill Coinc/Rosbottom | | Oil & Gas Operator | Jan 1990 |
| 25050 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2025 |
| 25051 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2025 |
| 25052 | Reynolds Exploration Co. | | Oil Operator | Dec 1986 |
| 25053 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 25054 | Reynolds Mining Corp | | Oil & Gas Operator | Aug 1968 |
| 25055 | Reynolds Oil Co. | | Oil Operator | Nov 2005 |
| 25056 | Reynolds Res, Inc | Owensboro, KY 42303 | Oil & Gas Operator | Dec 2023 |
| 25057 | Reynolds, Dan Company | Camden, AR 71701 | Oil Operator | Jan 2025 |
| 25058 | Reynolds, E. P., Jr. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 25059 | Reynolds, J David Company | Camden, AR 71701 | Oil & Gas Operator | Dec 2024 |
| 25060 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 25061 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 25062 | Reyrock Oil, LLC | Limestone, NY 14753 | Oil & Gas Operator | Dec 2023 |
| 25063 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 25064 | RFB Exploration | | Oil Operator | Feb 1981 |
| 25065 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2025 |
| 25066 | RG Exploration, LLC | Midland, TX 78705 | Oil & Gas Operator | Feb 2020 |
| 25067 | RGN Company, Inc. | Stockton, KS 67669 | Oil Operator | Sep 2024 |
| 25068 | RGX Energy LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2019 |
| 25069 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Dec 2024 |
| 25070 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2025 |
| 25071 | RHC Energy (USA) LLC | Houston, TX 77027 | Oil Operator | Apr 2025 |
| 25072 | RHDK Oil & Gas LLC/Dba Red Hill | Dover, OH 44622-9801 | Oil & Gas Operator | Dec 2023 |
| 25073 | Rhea, Andrew | Galva, KS 67443 | Oil & Gas Operator | Nov 2024 |
| 25074 | Rheaco Oil Company, LTD. | Sourlake, TX 77659 | Oil Operator | Apr 2025 |
| 25075 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 25076 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |
| 25077 | Rhine Oil Co LLC | Dalton, OH 44618 | Oil & Gas Operator | Dec 1999 |
| 25078 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Jan 2025 |
| 25079 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 25080 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |
| 25081 | Rhoads Mark Operations | Ponca City, OK 74604 | Oil & Gas Operator | May 2006 |
| 25082 | Rhoads Oil, LLC | | Oil Operator | Jan 2025 |
| 25083 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 25084 | Rhoden Investment Co. | | Oil Operator | Dec 1987 |
| 25085 | Rhodes Disposal, Inc. | Bryson, TX 76427 | Oil Operator | Apr 2025 |
| 25086 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 25087 | Rhodes Well Service | | Oil Operator | Dec 2024 |
| 25088 | Rhodes-Fielding Corporation | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 25089 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Feb 2025 |
| 25090 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 25091 | RHR Oil & Gas, LLC | Fort Worth, TX 76107 | Oil Operator | Apr 2025 |
| 25092 | Rhyne, J.V. | Cisco, TX 76437 | Oil & Gas Operator | Apr 2025 |
| 25093 | Ria Mia Corporation | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2011 |
| 25094 | Rialto Oil & Gas Corporation | Houston, TX 77098 | Oil & Gas Operator | Oct 2012 |
| 25095 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 25096 | Ric Petroleum | | Gas Operator | Dec 1998 |
| 25097 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 25098 | Rice Drilling B LLC | Canonsburg, PA 15317-5851 | Gas Operator | Jan 2025 |
| 25099 | Rice Drilling Company | Santa Anna, TX 76878 | Oil & Gas Operator | Apr 2025 |
| 25100 | Rice Drilling D LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2024 |