| 5101 | Red Dirt Environmental Services LLC | Checotah, OK 74426 | Oil & Gas Operator | Jan 2025 |
| 5102 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 5103 | Red Earth Oil & Gas, Inc. | Oklahoma City, OK 73159 | Oil & Gas Operator | Oct 2021 |
| 5104 | Red Fork (USA) Investments Inc | Midland, TX 79710-0272 | Oil & Gas Operator | May 2019 |
| 5105 | Red Fork Oil Co | Lakewood, CO 80215 | Oil & Gas Operator | Aug 1993 |
| 5106 | Red Fork Oil Production Inc | Mannford, OK 74044-0492 | Oil & Gas Operator | Feb 2017 |
| 5107 | Red Fork Production, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Jan 2025 |
| 5108 | Red Fork Valley Oil & Gas Co | Cushing, OK 74023 | Oil Operator | Dec 2014 |
| 5109 | Red Hawk Disposal LLC | Oklahoma City, OK 73172 | Oil Operator | Jun 2023 |
| 5110 | Red Hawk Resources Inc | Edmond, OK 73003-3207 | Oil & Gas Operator | Feb 2025 |
| 5111 | Red Mountain Operating LLC | Oklahoma City, OK 73118-1253 | Oil & Gas Operator | Apr 2024 |
| 5112 | Red Ox Resources LLC | Dumas, TX 79029 | Gas Operator | Jan 2025 |
| 5113 | Red Plains Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2017 |
| 5114 | Red River Crude Oil LLC | Houston, TX 77081 | Oil Operator | Jan 2025 |
| 5115 | Red River Fuels Inc | Bristow, OK 74010-2231 | Oil & Gas Operator | Mar 2008 |
| 5116 | Red River Oil & Gas Company | Oklahoma City, OK 73132-5120 | Oil & Gas Operator | Mar 2015 |
| 5117 | Red River Oil Corporation | Alvarado, TX 76009-0449 | Oil & Gas Operator | Dec 2016 |
| 5118 | Red River Petroleum Inc | Tipton, OK 73570-0351 | Oil Operator | Jan 2025 |
| 5119 | Red River Services LLC | Tulsa, OK 74136 | Gas Operator | Jan 2007 |
| 5120 | Red Rock Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2015 |
| 5121 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jan 2025 |
| 5122 | Red Rocks Oil & Gas Operating LLC | Oklahoma City, OK 73103-4821 | Oil & Gas Operator | Feb 2025 |
| 5123 | Red Sand Resources LLC | Ada, OK 74821 | Oil Operator | Jan 2025 |
| 5124 | Red Stone Resources LLC | Edmond, OK 73013 | Oil Operator | Jun 2023 |
| 5125 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Feb 2025 |
| 5126 | Redbird Oil Company | Bartlesville, OK 74005-2566 | Oil & Gas Operator | Mar 2015 |
| 5127 | Redbud E & P, Inc. | Spring, TX 77379 | Oil & Gas Operator | Apr 2025 |
| 5128 | Redbud Oil & Gas | Nowata, OK 74048-0026 | Oil & Gas Operator | Dec 2000 |
| 5129 | Redbud Oil Company | Elmore City, OK 73433-8637 | Oil Operator | Feb 2025 |
| 5130 | Redcord C R | Louisville, KY 40243 | Oil Operator | Jan 2025 |
| 5131 | Reddy Oil & Gas Corporation | Tulsa, OK 74108-5105 | Oil & Gas Operator | Feb 2025 |
| 5132 | Redfork Operations LLC | Dover, OK 73734-9409 | Oil & Gas Operator | Feb 2025 |
| 5133 | Redgate Petroleum Inc | Waynoka, OK 73860-9408 | Oil & Gas Operator | Mar 2014 |
| 5134 | Redhen Oil Company | Oklahoma City, OK 73135 | Oil & Gas Operator | Sep 2024 |
| 5135 | Redhill Operating LLC | Duncan, OK 73533 | Oil & Gas Operator | Feb 2025 |
| 5136 | Redland Development LLC | Cashion, OK 73016-9625 | Oil & Gas Operator | May 2019 |
| 5137 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2025 |
| 5138 | Redline Energy LLC | Dover, OK 73734 | Oil & Gas Operator | Feb 2025 |
| 5139 | Redrock Exploration, Inc | Plano, TX 75025 | Oil Operator | Jul 2014 |
| 5140 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 5141 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | Feb 2025 |
| 5142 | Redwine Resources Inc | Dallas, TX 75225 | Oil & Gas Operator | Feb 2015 |
| 5143 | Reed Power Tongs Inc | Seminole, OK 74818 | Oil & Gas Operator | Jan 2025 |
| 5144 | Reed Richard L | Shawnee, OK 74802-1462 | Oil Operator | Nov 1993 |
| 5145 | Reeder Energy Operating LLC | Dallas, TX 75206-4085 | Oil & Gas Operator | Dec 2021 |
| 5146 | Reeves Harold D | | Oil & Gas Operator | Apr 1992 |
| 5147 | Regal Petroleum Services, Inc. | Euless, TX 76039-1127 | Oil & Gas Operator | May 2015 |
| 5148 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 5149 | Regency Petroleum Inc | Jones, OK 73049-8724 | Oil & Gas Operator | Mar 1999 |
| 5150 | Regional Energy Corporation | Temple, TX 76503-1733 | Oil Operator | Mar 1996 |
| 5151 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Jan 2025 |
| 5152 | Reliable Oil Industries Inc | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2024 |
| 5153 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 5154 | Relm Energy Inc | Morris, OK 74445-2227 | Oil & Gas Operator | Feb 2021 |
| 5155 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 5156 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Apr 2025 |
| 5157 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 5158 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 5159 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 5160 | Rence Guy A | | Oil Operator | Jan 2013 |
| 5161 | Renco Energy Inc | Calgary, AB T2H 0H6 | Oil & Gas Operator | Jan 2025 |
| 5162 | Renegade Oil And Gas LLC | Helena, OK 73741-0162 | Oil & Gas Operator | Dec 2019 |
| 5163 | Renegade Operating Company | Aurora, CO 80016 | Oil & Gas Operator | Aug 2023 |
| 5164 | Renfroe Lyndol | Wilson, OK 73463-6631 | Oil Operator | May 2020 |
| 5165 | Rennick Henry | Pawhuska, OK 74056 | Oil Operator | Jan 2025 |
| 5166 | Reno Resources Inc | Boynton, OK 74422-9762 | Oil & Gas Operator | May 2015 |
| 5167 | Rensark Energy Company Inc | Oklahoma City, OK 73105-5208 | Oil & Gas Operator | Apr 2015 |
| 5168 | Renthol Oil LLC | Iowa Park, TX 76367-8101 | Oil & Gas Operator | Mar 2018 |
| 5169 | Reo Resources Inc | | Oil & Gas Operator | Apr 2018 |
| 5170 | Replay Energy Assets LLC | Oklahoma City, OK 73156 | Oil & Gas Operator | Jan 2025 |
| 5171 | Replay Resources LLC | Ada, OK 74820-6512 | Oil Operator | Nov 2022 |
| 5172 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 5173 | Republic Resources Corporation | Oklahoma City, OK 73102-3081 | Oil & Gas Operator | May 2021 |
| 5174 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 5175 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 5176 | Reserve Exploration Co. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2007 |
| 5177 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2025 |
| 5178 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 5179 | Resource Dev Technology LLC | Morrison, CO 80465-5020 | Oil & Gas Operator | Jan 2017 |
| 5180 | Resource Development, Inc. | Stroud, OK 74079 | Oil & Gas Operator | Feb 2007 |
| 5181 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2025 |
| 5182 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 5183 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 5184 | Resources Operating Co Inc | Enid, OK 73703-1628 | Oil & Gas Operator | Jan 2025 |
| 5185 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 5186 | Revard Oil & Gas Properties Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2025 |
| 5187 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 5188 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jan 2025 |
| 5189 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 5190 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Jan 2025 |
| 5191 | Revilo Exploration LLC | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 5192 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 5193 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 5194 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 5195 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 5196 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 5197 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 5198 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Jan 2025 |
| 5199 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 5200 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |