| 3601 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 3602 | Rhodes Well Service | | Oil Operator | May 2026 |
| 3603 | Rice Engineering | | Oil & Gas Operator | Jul 1988 |
| 3604 | Rice Engineering Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 3605 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 3606 | Rice Production Company | | Oil Operator | Dec 2019 |
| 3607 | Richard Engineer | | Oil Operator | Mar 1991 |
| 3608 | Richard Oil Comp | | Oil Operator | Mar 1992 |
| 3609 | Richardson And Son , Inc. | Winfield, KS 67156 | Oil Operator | May 2026 |
| 3610 | Richardson Developments | | Oil Operator | Oct 2025 |
| 3611 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 3612 | Richardson Oil | | Oil & Gas Operator | Dec 2019 |
| 3613 | Richardson Oil Operating | | Oil & Gas Operator | Dec 2009 |
| 3614 | Richey Heartsill | | Oil Operator | Feb 1991 |
| 3615 | Richlan Drilling | | Oil Operator | Dec 1994 |
| 3616 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | May 2026 |
| 3617 | Richland Oil Investments, LLC | Palco, KS 67657 | Oil Operator | May 2026 |
| 3618 | Rick'S Well Service | Cherryvale, KS 67335 | Oil & Gas Operator | Apr 2023 |
| 3619 | Rickerson, Russell | Rantoul, KS 66079 | Oil Operator | Apr 2026 |
| 3620 | Rider Oil & Gas | | Oil Operator | Aug 1991 |
| 3621 | Rider, Don C. | Medicine Lodge, KS 67104 | Gas Operator | Mar 2000 |
| 3622 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | May 2026 |
| 3623 | Rierson, Joe | McPherson, KS 67460 | Oil Operator | May 2026 |
| 3624 | Rig 6 Drilling Co., Inc. | Bronson, KS 66716 | Oil Operator | Oct 2019 |
| 3625 | Riley Resources, Inc . | Oklahoma City, OK 73162 | Gas Operator | May 2026 |
| 3626 | Rim Oil Company | Hays, KS 67601 | Oil Operator | Jun 2001 |
| 3627 | Rimco Oil & Gas | | Oil Operator | Mar 1987 |
| 3628 | Rincon Oil & Gas LLC | Arvada, CO 80005 | Gas Operator | Jun 2022 |
| 3629 | Rine Drilling Co | | Oil & Gas Operator | Mar 1994 |
| 3630 | Rine Drillingand Exploration, Inc. | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 3631 | Rine Exploration | | Oil & Gas Operator | Jul 1994 |
| 3632 | Rine Exploration Co. | | Oil Operator | Jul 1988 |
| 3633 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 3634 | Ringneck Resources, LLC | Tulsa, OK 74135 | Gas Operator | Sep 2025 |
| 3635 | Rissman Lease Operating | Oklahoma City, OK 73116 | Oil Operator | Dec 1996 |
| 3636 | Ritchie C Stewar | | Oil Operator | Aug 1982 |
| 3637 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 3638 | Ritchie Exploration | | Oil Operator | Aug 1995 |
| 3639 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | May 2026 |
| 3640 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 3641 | River Road Production, LLC | Hays, KS 67601 | Oil Operator | Feb 1997 |
| 3642 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2026 |
| 3643 | Riveria Drilling | | Oil Operator | Aug 1984 |
| 3644 | Riverside Petrol | | Oil Operator | Sep 1995 |
| 3645 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2026 |
| 3646 | RJ Energy, LLC | Garnett, KS 66032 | Oil Operator | May 2026 |
| 3647 | RJ VIsion Operating | | Oil Operator | Mar 2026 |
| 3648 | RJM Company | Claflin, KS 67525 | Oil & Gas Operator | May 2026 |
| 3649 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Jul 2026 |
| 3650 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | May 2026 |
| 3651 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 |
| 3652 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 3653 | RMR Drilling Com | | Oil Operator | Sep 1988 |
| 3654 | Roadrunner Energy | | Oil Operator | Sep 2005 |
| 3655 | Roadrunner Energy Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 3656 | Roark S L | | Oil & Gas Operator | Nov 1992 |
| 3657 | Roark, Nancy | Winfield, KS 67156 | Oil Operator | Dec 2004 |
| 3658 | Robert Hopkins Operations, LLC | Salina, KS 67401 | Oil Operator | Nov 2019 |
| 3659 | Robert P. Wilson, Inc. | Montclair, NJ 07043 | Gas Operator | Dec 2019 |
| 3660 | Robert S. Harwell, Inc. | Edmond, OK 73034 | Oil Operator | Nov 2019 |
| 3661 | Robert-Gay Energ | | Oil & Gas Operator | Jun 1992 |
| 3662 | Robert-Gay Energy Enterprises | Hutchinson, KS 67501 | Oil Operator | Nov 1999 |
| 3663 | Roberta Hutton/Robert Hutton | Iola, KS 66749 | Oil Operator | Oct 2007 |
| 3664 | Roberts & Murphy | | Oil & Gas Operator | Sep 1995 |
| 3665 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 3666 | Roberts Brothers | | Oil Operator | Oct 1993 |
| 3667 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | May 2026 |
| 3668 | Roberts, Randy | Sedan, KS 67361 | Oil & Gas Operator | May 2026 |
| 3669 | Robertson, Richard | Tulsa, OK 74127 | Gas Operator | May 2026 |
| 3670 | Robinette Oil Company LLC | Chanute, KS 66720 | Oil Operator | Sep 2025 |
| 3671 | Robinowitz Oil C | | Oil Operator | Dec 1996 |
| 3672 | Robinowitz Oil Company, A General Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2023 |
| 3673 | Robinson Energy & Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Aug 2008 |
| 3674 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 3675 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 3676 | Robinson, Beryl A. | Peru, KS 67360 | Oil & Gas Operator | Mar 2012 |
| 3677 | Robison, L. E. Oil | Yates Center, KS 66783 | Oil Operator | Sep 2001 |
| 3678 | Robl-Six, Inc. | Ellinwood, KS 67526 | Oil Operator | Dec 2019 |
| 3679 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Sep 2026 |
| 3680 | Rock Creek Crude, LLC | Morrill, KS 66515 | Oil Operator | May 2026 |
| 3681 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 3682 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Jun 2026 |
| 3683 | Rock Oil Corporation | Lawrence, KS 66046 | Oil Operator | Oct 2004 |
| 3684 | Rock Petroleum, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 3685 | Rockhound Petroleum, LLC | St. John, KS 67576 | Oil & Gas Operator | May 2026 |
| 3686 | Rockin 'A' Oil | | Oil Operator | May 2026 |
| 3687 | Rockin 9 Oil And Gas, LLC | Auburndale, FL 33823 | Gas Operator | May 2026 |
| 3688 | Rockin Bar Nothin Ranch, Inc. | Independence, KS 67301 | Oil Operator | May 2026 |
| 3689 | Rockin G. Energy, LLC | Weatherford, TX 76087 | Gas Operator | Sep 2020 |
| 3690 | Rockin K Enterprises LLC | Riverside, MO 64168 | Oil Operator | Apr 2026 |
| 3691 | Rockwall Energy LLC | Colony, KS 66015 | Oil Operator | Apr 2026 |
| 3692 | Rockwood Petrole | | Oil Operator | Aug 1985 |
| 3693 | Rocky Road Oil Company | | Oil Operator | May 2026 |
| 3694 | Rodeo Resources | | Oil Operator | Jul 1986 |
| 3695 | Rodgers, Murray | Sedan, KS 67361 | Oil Operator | Oct 1996 |
| 3696 | Rodriguez, Everado | Paola, KS 66071 | Oil Operator | Mar 2021 |
| 3697 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 3698 | Rogers Merlin D | | Oil Operator | Feb 2001 |
| 3699 | Rogers Oil Co. | Bronson, KS 66716 | Oil & Gas Operator | Sep 1995 |
| 3700 | Rogers Oil Compa | | Oil Operator | Apr 1993 |