| 4901 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 4902 | Rico Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 4903 | Riddle William T | Haskell, OK 74436-1353 | Oil & Gas Operator | Feb 2014 |
| 4904 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | May 2026 |
| 4905 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 4906 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 4907 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | May 2026 |
| 4908 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | May 2026 |
| 4909 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 4910 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Jan 2026 |
| 4911 | Riley Exploration Operating Co LLC | Blanchard, OK 73010-8024 | Gas Operator | Jun 2017 |
| 4912 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 4913 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 4914 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Feb 2026 |
| 4915 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Jan 2026 |
| 4916 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 4917 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | May 2026 |
| 4918 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Jan 2026 |
| 4919 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 4920 | River City Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 4921 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2026 |
| 4922 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | Feb 2026 |
| 4923 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Jan 2026 |
| 4924 | Riverstone Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 4925 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 4926 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 4927 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 4928 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 4929 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | Dec 2025 |
| 4930 | Rja Energy LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2026 |
| 4931 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | May 2026 |
| 4932 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2026 |
| 4933 | RKR Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2026 |
| 4934 | RL&B Energy LLC | Wichita Falls, TX 76230 | Oil & Gas Operator | Jan 2026 |
| 4935 | RLB Investments LLC | Holdenville, OK 74848-9421 | Oil Operator | Jul 2017 |
| 4936 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 4937 | Roadrunner Energy Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 4938 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 4939 | Robbins Thomas D & Charlene A Revocable Trust | Plano, TX 75093-7471 | Oil Operator | Jul 2018 |
| 4940 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 4941 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 4942 | Roberson, Joe | Vernon, TX 76385 | Oil & Gas Operator | Feb 2015 |
| 4943 | Robert B Knight Dba D & K Oil Company | Stratford, OK 74872-6732 | Oil Operator | Jul 2022 |
| 4944 | Robert H & Layna Plummer Rev Intervivios Trust | | Oil Operator | Jul 2018 |
| 4945 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 4946 | Roberts Herman | Henderson, NV 89014 | Oil Operator | Jul 2023 |
| 4947 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 4948 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 4949 | Robertson Johnie J | Okmulgee, OK 74447-8765 | Oil & Gas Operator | Jan 2026 |
| 4950 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 4951 | Robinson Brothers Drilling Co | | Oil & Gas Operator | Jul 2002 |
| 4952 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 4953 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 4954 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 4955 | Robinson, Gary D | | Oil Operator | Jan 2026 |
| 4956 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Dec 2025 |
| 4957 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 4958 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 4959 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 4960 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 4961 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 4962 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Feb 2026 |
| 4963 | Rocket Energy Corporation | Muskogee, OK 74402-1665 | Oil & Gas Operator | Dec 2003 |
| 4964 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 4965 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 4966 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 4967 | Rockies Resources Holdings LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2026 |
| 4968 | Rockin D Resources LLC | Bristow, OK 74010-4162 | Oil Operator | Jan 2026 |
| 4969 | Rockin D Ventures LLC | Morris, OK 74445 | Oil Operator | Jan 2026 |
| 4970 | Rockin S Field Service LLC | Stigler, OK 74462 | Gas Operator | Jan 2026 |
| 4971 | Rocking Chair Energy Partners LLC | Morris, OK 74445 | Oil Operator | Jan 2026 |
| 4972 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Jan 2026 |
| 4973 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 4974 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 4975 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 4976 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Feb 2026 |
| 4977 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2025 |
| 4978 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 4979 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 4980 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Nov 2025 |
| 4981 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 4982 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 4983 | Rogers County Coal Seam LLC | Ridgeland, MS 39157-8635 | Oil & Gas Operator | Mar 2015 |
| 4984 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 4985 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 4986 | Rogers Well Service Inc | Ponca City, OK 74601 | Oil & Gas Operator | Apr 2014 |
| 4987 | Rogers, Cora L | | Oil Operator | Jan 2026 |
| 4988 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jan 2026 |
| 4989 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jan 2026 |
| 4990 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 4991 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 4992 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 4993 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 4994 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 4995 | Rongey Ira E | Sapulpa, OK 74066-9317 | Oil & Gas Operator | May 2013 |
| 4996 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 4997 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 4998 | Roring Arthur | Ratliff City, OK 73481 | Oil Operator | Jan 2026 |
| 4999 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 5000 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |