| 5001 | Relm Energy Inc | Morris, OK 74445-2227 | Oil & Gas Operator | Feb 2021 |
| 5002 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 5003 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Dec 2025 |
| 5004 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 5005 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 5006 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 5007 | Rence Guy A | | Oil Operator | Jan 2013 |
| 5008 | Renco Energy Inc | Calgary, AB T2H 0H6 | Oil & Gas Operator | Feb 2025 |
| 5009 | Renegade Oil And Gas LLC | Helena, OK 73741-0162 | Oil & Gas Operator | Dec 2019 |
| 5010 | Renegade Operating Company | Aurora, CO 80016 | Oil & Gas Operator | Aug 2023 |
| 5011 | Renfroe Lyndol | Wilson, OK 73463-6631 | Oil Operator | May 2020 |
| 5012 | Reno Resources Inc | Boynton, OK 74422-9762 | Oil & Gas Operator | May 2015 |
| 5013 | Rensark Energy Company Inc | Oklahoma City, OK 73105-5208 | Oil & Gas Operator | Apr 2015 |
| 5014 | Renthol Oil LLC | Iowa Park, TX 76367-8101 | Oil & Gas Operator | Mar 2018 |
| 5015 | Reo Resources Inc | | Oil & Gas Operator | Apr 2018 |
| 5016 | Replay Energy Assets LLC | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2025 |
| 5017 | Replay Resources LLC | Ada, OK 74820-6512 | Oil Operator | Nov 2022 |
| 5018 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 5019 | Republic Resources Corporation | Oklahoma City, OK 73102-3081 | Oil & Gas Operator | May 2021 |
| 5020 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 5021 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 5022 | Reserve Exploration Co. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2007 |
| 5023 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2025 |
| 5024 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 5025 | Resource Dev Technology LLC | Morrison, CO 80465-5020 | Oil & Gas Operator | Jan 2017 |
| 5026 | Resource Development Inc | Stroud, OK 74079 | Oil & Gas Operator | Feb 2007 |
| 5027 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2025 |
| 5028 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 5029 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 5030 | Resources Operating Co Inc | Rogers, AR 72756 | Oil & Gas Operator | Oct 2025 |
| 5031 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 5032 | Revard Oil And Gas Properties Inc | | Oil & Gas Operator | Oct 2025 |
| 5033 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 5034 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Oct 2025 |
| 5035 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 5036 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Oct 2025 |
| 5037 | Revilo Exploration LLC | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 5038 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 5039 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 5040 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 5041 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 5042 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 5043 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 5044 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Oct 2025 |
| 5045 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 5046 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |
| 5047 | Rhoads Mark Operations | Ponca City, OK 74604 | Oil & Gas Operator | May 2006 |
| 5048 | Rhodes-Fielding Corporation | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 5049 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 5050 | Rice Michael Lee | Beggs, OK 74421-2977 | Oil Operator | Jul 2025 |
| 5051 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 5052 | Rice Patricia Dba Rice Oil | Duncan, OK 73533-1888 | Oil Operator | Jan 2021 |
| 5053 | Richard C Sullins Credit Shelter Trust | Perry, OK 73077 | Gas Operator | Feb 2025 |
| 5054 | Richard Charles J | | Oil & Gas Operator | May 1996 |
| 5055 | Richard W Thompson Inc | Plano, TX 75075 | Oil & Gas Operator | Jul 2019 |
| 5056 | Richardson Construction Co | Henryetta, OK 74437 | Oil & Gas Operator | Apr 2015 |
| 5057 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 5058 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 5059 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5060 | Richart Oil Company Inc | Oklahoma City, OK 73154-0631 | Oil & Gas Operator | Aug 1995 |
| 5061 | Richland Energy Corporation | Tulsa, OK 74103-4441 | Oil Operator | Jul 1995 |
| 5062 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2025 |
| 5063 | Rick Pulliam Oil & Gas Inc | Bristow, OK 74010 | Oil & Gas Operator | Oct 2025 |
| 5064 | Ricks Consulting LLC | Copan, OK 74022 | Oil Operator | Sep 2025 |
| 5065 | Ricks Expl Acquisition Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2004 |
| 5066 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 5067 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 5068 | Rico Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5069 | Riddle William T | Haskell, OK 74436-1353 | Oil & Gas Operator | Feb 2014 |
| 5070 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Dec 2025 |
| 5071 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 5072 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 5073 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 5074 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | Dec 2025 |
| 5075 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 5076 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Oct 2025 |
| 5077 | Riley Exploration Operating Co LLC | Blanchard, OK 73010-8024 | Gas Operator | Jun 2017 |
| 5078 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 5079 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 5080 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Oct 2025 |
| 5081 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Oct 2025 |
| 5082 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 5083 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 5084 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Nov 2025 |
| 5085 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 5086 | River City Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 5087 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 5088 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | Oct 2025 |
| 5089 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Oct 2025 |
| 5090 | Riverstone Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Oct 2025 |
| 5091 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 5092 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2025 |
| 5093 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 5094 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 5095 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2025 |
| 5096 | Rja Energy LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Oct 2025 |
| 5097 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Dec 2025 |
| 5098 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Nov 2025 |
| 5099 | RKR Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Oct 2025 |
| 5100 | RL&B Energy LLC | Wichita Falls, TX 76230 | Oil & Gas Operator | Oct 2025 |