| 5001 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 5002 | Rico Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5003 | Riddle William T | Haskell, OK 74436-1353 | Oil & Gas Operator | Feb 2014 |
| 5004 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Dec 2025 |
| 5005 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 5006 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 5007 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 5008 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | Dec 2025 |
| 5009 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 5010 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Aug 2025 |
| 5011 | Riley Exploration Operating Co LLC | Blanchard, OK 73010-8024 | Gas Operator | Jun 2017 |
| 5012 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 5013 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 5014 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Aug 2025 |
| 5015 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Aug 2025 |
| 5016 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 5017 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 5018 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Aug 2025 |
| 5019 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 5020 | River City Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 5021 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 5022 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | Sep 2025 |
| 5023 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Sep 2025 |
| 5024 | Riverstone Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Aug 2025 |
| 5025 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 5026 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 5027 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 5028 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 5029 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2025 |
| 5030 | Rja Energy LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Sep 2025 |
| 5031 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Dec 2025 |
| 5032 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Sep 2025 |
| 5033 | RKR Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Aug 2025 |
| 5034 | RL&B Energy LLC | Wichita Falls, TX 76230 | Oil & Gas Operator | Aug 2025 |
| 5035 | RLB Investments LLC | Holdenville, OK 74848-9421 | Oil Operator | Jul 2017 |
| 5036 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 5037 | Roadrunner Energy Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 5038 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 5039 | Robbins Thomas D & Charlene A Revocable Trust | Plano, TX 75093-7471 | Oil Operator | Jul 2018 |
| 5040 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 5041 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 5042 | Roberson, Joe | Vernon, TX 76385 | Oil & Gas Operator | Feb 2015 |
| 5043 | Robert B Knight Dba D & K Oil Company | Stratford, OK 74872-6732 | Oil Operator | Jul 2022 |
| 5044 | Robert H & Layna Plummer Rev Intervivios Trust | | Oil Operator | Jul 2018 |
| 5045 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 5046 | Roberts Herman | Henderson, NV 89014 | Oil Operator | Jul 2023 |
| 5047 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 5048 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 5049 | Robertson Johnie J | Okmulgee, OK 74447-8765 | Oil & Gas Operator | Aug 2025 |
| 5050 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 5051 | Robinson Brothers Drilling Co | | Oil & Gas Operator | Jul 2002 |
| 5052 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5053 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 5054 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 5055 | Robinson, Gary D | | Oil Operator | Aug 2025 |
| 5056 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Apr 2025 |
| 5057 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 5058 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 5059 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 5060 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 5061 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 5062 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Aug 2025 |
| 5063 | Rocket Energy Corporation | Muskogee, OK 74402-1665 | Oil & Gas Operator | Dec 2003 |
| 5064 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 5065 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 5066 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 5067 | Rockies Resources Holdings LLC | Lakewood, CO 80228 | Oil & Gas Operator | Sep 2025 |
| 5068 | Rockin D Ventures LLC | Morris, OK 74445 | Oil Operator | Aug 2025 |
| 5069 | Rockin S Field Service LLC | Stigler, OK 74462 | Gas Operator | Aug 2025 |
| 5070 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Aug 2025 |
| 5071 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 5072 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 5073 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 5074 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Sep 2025 |
| 5075 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2025 |
| 5076 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 5077 | Rodman George Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 1992 |
| 5078 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 5079 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Feb 2025 |
| 5080 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 5081 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 5082 | Rogers County Coal Seam LLC | Ridgeland, MS 39157-8635 | Oil & Gas Operator | Mar 2015 |
| 5083 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 5084 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 5085 | Rogers Well Service Inc | Ponca City, OK 74601 | Oil & Gas Operator | Apr 2014 |
| 5086 | Rogers, Cora L | | Oil Operator | Aug 2025 |
| 5087 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Aug 2025 |
| 5088 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Aug 2025 |
| 5089 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 5090 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 5091 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 5092 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 5093 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 5094 | Rongey Ira E | Sapulpa, OK 74066-9317 | Oil & Gas Operator | May 2013 |
| 5095 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 5096 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 5097 | Roring Arthur | Ratliff City, OK 73481 | Oil Operator | Aug 2025 |
| 5098 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 5099 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 5100 | Roring Steven A | Ratliff City, OK 73481-0206 | Oil Operator | Feb 2018 |