| 4901 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | May 2026 |
| 4902 | Redwine Resources Inc | Dallas, TX 75225 | Oil & Gas Operator | Feb 2015 |
| 4903 | Reed Power Tongs Inc | Seminole, OK 74818 | Oil & Gas Operator | Apr 2026 |
| 4904 | Reed Richard L | Shawnee, OK 74802-1462 | Oil Operator | Nov 1993 |
| 4905 | Reeder Energy Operating LLC | Dallas, TX 75206-4085 | Oil & Gas Operator | Dec 2021 |
| 4906 | Reeves Harold D | | Oil & Gas Operator | Apr 1992 |
| 4907 | Regal Petroleum Services Inc | Euless, TX 76039-1127 | Oil & Gas Operator | May 2015 |
| 4908 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 4909 | Regency Petroleum Inc | Jones, OK 73049-8724 | Oil & Gas Operator | Mar 1999 |
| 4910 | Regional Energy Corporation | Temple, TX 76503-1733 | Oil Operator | Mar 1996 |
| 4911 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Apr 2026 |
| 4912 | Reign Operating LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2026 |
| 4913 | Reliable Oil Industries Inc | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2024 |
| 4914 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 4915 | Relm Energy Inc | Morris, OK 74445-2227 | Oil & Gas Operator | Feb 2021 |
| 4916 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 4917 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2026 |
| 4918 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 4919 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2026 |
| 4920 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 4921 | Rence Guy A | | Oil Operator | Jan 2013 |
| 4922 | Renco Energy Inc | Calgary, AB T2H 0H6 | Oil & Gas Operator | Mar 2026 |
| 4923 | Renegade Oil And Gas LLC | Helena, OK 73741-0162 | Oil & Gas Operator | Dec 2019 |
| 4924 | Renegade Operating Company | Aurora, CO 80016 | Oil & Gas Operator | Aug 2023 |
| 4925 | Renfroe Lyndol | Wilson, OK 73463-6631 | Oil Operator | May 2020 |
| 4926 | Reno Resources Inc | Boynton, OK 74422-9762 | Oil & Gas Operator | May 2015 |
| 4927 | Rensark Energy Company Inc | Oklahoma City, OK 73105-5208 | Oil & Gas Operator | Apr 2015 |
| 4928 | Reo Resources Inc | | Oil & Gas Operator | Apr 2018 |
| 4929 | Replay Energy Assets LLC | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2026 |
| 4930 | Replay Resources LLC | Ada, OK 74820-6512 | Oil Operator | Nov 2022 |
| 4931 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 4932 | Republic Resources Corporation | Oklahoma City, OK 73102-3081 | Oil & Gas Operator | May 2021 |
| 4933 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 4934 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 4935 | Reserve Exploration Co. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2007 |
| 4936 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2026 |
| 4937 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 4938 | Resource Dev Technology LLC | Morrison, CO 80465-5020 | Oil & Gas Operator | Jan 2017 |
| 4939 | Resource Development Inc | Stroud, OK 74079 | Oil & Gas Operator | Feb 2007 |
| 4940 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2026 |
| 4941 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 4942 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 4943 | Resources Operating Co Inc | Rogers, AR 72756 | Oil & Gas Operator | Oct 2025 |
| 4944 | Ret Oil Inc | Del City, OK 73115 | Oil & Gas Operator | Jan 2007 |
| 4945 | Revard Oil And Gas Properties Inc | | Oil & Gas Operator | Apr 2026 |
| 4946 | Revelation Gas & Oil Oklahoma LLC | Kansas City, KS 66103 | Oil & Gas Operator | Jul 2023 |
| 4947 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Apr 2026 |
| 4948 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 4949 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Apr 2026 |
| 4950 | Revilo Exploration LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2020 |
| 4951 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 4952 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 4953 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 4954 | Revolution Resources III, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2026 |
| 4955 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 4956 | Reynolds J W & Associates | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2000 |
| 4957 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 4958 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Apr 2026 |
| 4959 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 4960 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |
| 4961 | Rhoads Mark Operations | Ponca City, OK 74604 | Oil & Gas Operator | May 2006 |
| 4962 | Rhodes-Fielding Corporation | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 4963 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 4964 | Rice Michael Lee | Beggs, OK 74421-2977 | Oil Operator | Jul 2025 |
| 4965 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 4966 | Rice Patricia Dba Rice Oil | Duncan, OK 73533-1888 | Oil Operator | Jan 2021 |
| 4967 | Richard C Sullins Credit Shelter Trust | Perry, OK 73077 | Gas Operator | Feb 2025 |
| 4968 | Richard Charles J | | Oil & Gas Operator | May 1996 |
| 4969 | Richard W Thompson Inc | Plano, TX 75075 | Oil & Gas Operator | Jul 2019 |
| 4970 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 4971 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 4972 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 4973 | Richart Oil Company Inc | Oklahoma City, OK 73154-0631 | Oil & Gas Operator | Aug 1995 |
| 4974 | Richland Energy Corporation | Tulsa, OK 74103-4441 | Oil Operator | Jul 1995 |
| 4975 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2026 |
| 4976 | Rick Pulliam Oil & Gas Inc | Bristow, OK 74010 | Oil & Gas Operator | May 2026 |
| 4977 | Ricks Consulting LLC | Copan, OK 74022 | Oil Operator | Apr 2026 |
| 4978 | Ricks Expl Acquisition Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2004 |
| 4979 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 4980 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 4981 | Rico Oil Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 4982 | Riddle William T | Haskell, OK 74436-1353 | Oil & Gas Operator | Feb 2014 |
| 4983 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2026 |
| 4984 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 4985 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 4986 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2026 |
| 4987 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | Jul 2026 |
| 4988 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 4989 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Jan 2026 |
| 4990 | Riley Exploration Operating Co LLC | Blanchard, OK 73010-8024 | Gas Operator | Jun 2017 |
| 4991 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 4992 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 4993 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Apr 2026 |
| 4994 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Apr 2026 |
| 4995 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 4996 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Jul 2026 |
| 4997 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Apr 2026 |
| 4998 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 4999 | River City Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 5000 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2026 |