| 1 | R & C Oil And Gas Inc | Ada, OK 74820-3150 | Oil Operator | Jul 2016 |
| 2 | R Baker Oil LLC | Okemah, OK 74859 | Oil & Gas Operator | Oct 2024 |
| 3 | R H S Inc | Ada, OK 74821-1252 | Oil & Gas Operator | Apr 2020 |
| 4 | R J Exploration LLC | Konawa, OK 74849 | Oil & Gas Operator | Oct 2024 |
| 5 | R K R Exploration | Seminole, OK 74868-9754 | Oil & Gas Operator | Mar 2015 |
| 6 | R W Production Company Inc | Ada, OK 74821-2693 | Oil & Gas Operator | Apr 2011 |
| 7 | Radford Dale | Konawa, OK 74849-8828 | Oil & Gas Operator | Jun 2024 |
| 8 | Rainbow Energy Inc | | Oil & Gas Operator | Jul 2024 |
| 9 | Rainmaker Oil & Gas Corp | Oklahoma City, OK 73112-8883 | Oil & Gas Operator | Apr 2015 |
| 10 | Raizen Oil Company | Velma, OK 73091 | Oil & Gas Operator | Feb 2016 |
| 11 | Ramhead Petroleum Inc | Seminole, OK 74818-0848 | Oil & Gas Operator | Aug 2008 |
| 12 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 13 | Randy And Jan Walker Oil Company LLC | Konawa, OK 74849-9333 | Oil & Gas Operator | Oct 2024 |
| 14 | Ravil Inc | Edmond, OK 73013 | Gas Operator | Nov 1998 |
| 15 | Rawhide Oil Company | | Oil & Gas Operator | Sep 2011 |
| 16 | Rayland Operating LLC | Moro, IL 62067 | Oil Operator | Jun 2023 |
| 17 | Reach Oil And Gas Company Inc | Oklahoma City, OK 73118-1100 | Oil & Gas Operator | Oct 2024 |
| 18 | Reames Jr Keith E | Duncan, OK 73534-0246 | Oil & Gas Operator | Jul 1999 |
| 19 | Red River Oil & Gas Company | Oklahoma City, OK 73132-5120 | Oil & Gas Operator | Mar 2015 |
| 20 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2024 |
| 21 | Red Rocks Oil & Gas Operating LLC | Oklahoma City, OK 73103-4821 | Oil & Gas Operator | Oct 2024 |
| 22 | Redhen Oil Company | Oklahoma City, OK 73135 | Oil & Gas Operator | Oct 2024 |
| 23 | Reed Power Tongs Inc | Seminole, OK 74818 | Oil & Gas Operator | Oct 2024 |
| 24 | Reed Richard L | Shawnee, OK 74802-1462 | Oil Operator | Nov 1993 |
| 25 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Sep 2024 |
| 26 | Renco Energy Inc | Calgary, AB T2H 0H6 | Oil & Gas Operator | Sep 2024 |
| 27 | Rensark Energy Company Inc | Oklahoma City, OK 73105-5208 | Oil & Gas Operator | Apr 2015 |
| 28 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 29 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2024 |
| 30 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 31 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 32 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 33 | Rhodes-Fielding Corporation | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 34 | Richard W Thompson Inc | Plano, TX 75075 | Oil & Gas Operator | Jul 2019 |
| 35 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2024 |
| 36 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 37 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2024 |
| 38 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | Oct 2024 |
| 39 | Riverstone Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Oct 2024 |
| 40 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 41 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 42 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 43 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2024 |
| 44 | RKR Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Sep 2024 |
| 45 | Roadrunner Energy, Inc. | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 46 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 47 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2024 |
| 48 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 49 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 50 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 51 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Sep 2024 |
| 52 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 53 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 54 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 55 | Rosenthal Henry & Co | | Oil Operator | Feb 1994 |
| 56 | Roulston Pat | Konawa, OK 74849-4020 | Oil Operator | Oct 2024 |
| 57 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 58 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Aug 2024 |
| 59 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Oct 2024 |
| 60 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Oct 2024 |
| 61 | Rwit Company Inc | Tulsa, OK 74131-4255 | Oil & Gas Operator | Jul 2018 |