| 5001 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 5002 | Robinson, Gary D | | Oil Operator | Feb 2025 |
| 5003 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Apr 2025 |
| 5004 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 5005 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 5006 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 5007 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 5008 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 5009 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Apr 2025 |
| 5010 | Rocket Energy Corp | Muskogee, OK 74402-1665 | Oil & Gas Operator | Dec 2003 |
| 5011 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 5012 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 5013 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 5014 | Rockin D Ventures LLC | Morris, OK 74445 | Oil Operator | Apr 2025 |
| 5015 | Rockin S Field Service LLC | Stigler, OK 74462 | Gas Operator | Apr 2025 |
| 5016 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 5017 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 5018 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 5019 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 5020 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | May 2025 |
| 5021 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2024 |
| 5022 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 5023 | Rodman George Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 1992 |
| 5024 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 5025 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Feb 2025 |
| 5026 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 5027 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 5028 | Rogers County Coal Seam LLC | Ridgeland, MS 39157-8635 | Oil & Gas Operator | Mar 2015 |
| 5029 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 5030 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 5031 | Rogers Well Service Inc | Ponca City, OK 74601 | Oil & Gas Operator | Apr 2014 |
| 5032 | Rogers, Cora L | | Oil Operator | Apr 2025 |
| 5033 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Apr 2025 |
| 5034 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Mar 2025 |
| 5035 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 5036 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 5037 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 5038 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 5039 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 5040 | Rongey Ira E | Sapulpa, OK 74066-9317 | Oil & Gas Operator | May 2013 |
| 5041 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 5042 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 5043 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 5044 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 5045 | Roring Steven A | Ratliff City, OK 73481-0206 | Oil Operator | Feb 2018 |
| 5046 | Rose Dan And Bill | Henryetta, OK 74437-1450 | Oil & Gas Operator | May 2025 |
| 5047 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 5048 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 5049 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Apr 2025 |
| 5050 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 5051 | Rosenthal Henry & Co | | Oil Operator | Feb 1994 |
| 5052 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Jul 2025 |
| 5053 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 5054 | Ross Bobby L | Okmulgee, OK 74447-8802 | Oil & Gas Operator | Apr 2020 |
| 5055 | Ross Curtis | Ada, OK 74820-1354 | Oil & Gas Operator | Feb 2012 |
| 5056 | Roth Gary E | Tonkawa, OK 74653-2033 | Oil & Gas Operator | Jan 2020 |
| 5057 | Rougeot Oil & Gas Corp | Sperry, OK 74073 | Oil & Gas Operator | Apr 2025 |
| 5058 | Rough Rider Oil LLC | Booker, TX 79005-0427 | Oil & Gas Operator | May 2025 |
| 5059 | Roulston Pat | Konawa, OK 74849-4020 | Oil Operator | May 2025 |
| 5060 | Roundup Oil LLC | Springer, OK 73458 | Oil & Gas Operator | May 2025 |
| 5061 | Rountree Productions LLC | | Oil Operator | Apr 2025 |
| 5062 | Rover Operating, LLC | Chicago, IL 60606 | Oil & Gas Operator | May 2025 |
| 5063 | Rowe Energy | Beggs, OK 74421-0240 | Oil & Gas Operator | Mar 2015 |
| 5064 | Rowe Stephen Oil Properties LLC | Hunt, TX 78024 | Oil & Gas Operator | Apr 2020 |
| 5065 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | May 2025 |
| 5066 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 5067 | Roy G Oil Company | Drumright, OK 74030-1236 | Oil & Gas Operator | Oct 1995 |
| 5068 | Roy L Ashton Oil & Gas Production Inc | Sapulpa, OK 74066 | Oil Operator | May 2025 |
| 5069 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 5070 | Royal Energy Resources LTD | Denver, CO 80221 | Oil & Gas Operator | May 2013 |
| 5071 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 5072 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 5073 | Royal Petroleum | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 5074 | Royal Petroleum Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jan 2025 |
| 5075 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | May 2025 |
| 5076 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | May 2025 |
| 5077 | Royalty Petroleum Company | Oklahoma City, OK 73120 | Gas Operator | Feb 2002 |
| 5078 | Roye Realty & Developing Inc | Stigler, OK 74462-0148 | Gas Operator | Dec 2004 |
| 5079 | Rozen H H | | Oil Operator | Aug 2022 |
| 5080 | Rpa Energy LLC | Ada, OK 74820 | Oil Operator | Apr 2025 |
| 5081 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | May 2025 |
| 5082 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 5083 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Jul 2025 |
| 5084 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 5085 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 5086 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2025 |
| 5087 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Apr 2025 |
| 5088 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2025 |
| 5089 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Jul 2025 |
| 5090 | Rush-Andrus Engineering | Royse City, TX 75189-1210 | Oil & Gas Operator | Feb 2022 |
| 5091 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 5092 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Apr 2025 |
| 5093 | Russell Oil Company | Haskell, OK 74436 | Oil & Gas Operator | Apr 2014 |
| 5094 | Russell, John R | | Oil Operator | Mar 2025 |
| 5095 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Jul 2025 |
| 5096 | Rustler Energy LLC | Lindsay, OK 73052 | Oil & Gas Operator | Apr 2025 |
| 5097 | RW Oil & Gas LLC | Lamont, OK 74643 | Oil & Gas Operator | May 2025 |
| 5098 | Rwit Company Inc | Tulsa, OK 74131-4255 | Oil & Gas Operator | Jul 2018 |
| 5099 | Ry-Co Petroleum | Wann, OK 74083 | Oil & Gas Operator | Feb 2017 |
| 5100 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |