| 3501 | Rankin, Lennes | Sharon, KS 67138 | Gas Operator | Jul 2024 |
| 3502 | Rapid Well Servi | | Oil Operator | Feb 1995 |
| 3503 | Rapid Well Service, Inc. | Russell, KS 67665 | Oil Operator | Jul 2024 |
| 3504 | Ratex Corporation | Cambridge, WI 53523 | Oil Operator | Jun 2011 |
| 3505 | Ratzlaff, Steven | Galva, KS 67443 | Oil Operator | Dec 1996 |
| 3506 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Aug 2024 |
| 3507 | Raw Energy Corporation Of Kansas | Weatherford, TX 76086 | Gas Operator | Dec 2019 |
| 3508 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 2024 |
| 3509 | Raygary Oil Co. | Havana, KS 67347 | Oil Operator | May 2002 |
| 3510 | Raygary Oil Comp | | Oil Operator | Sep 1991 |
| 3511 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jul 2024 |
| 3512 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 3513 | Razook Oil Compa | | Oil Operator | Aug 1990 |
| 3514 | Razorback Explor | | Gas Operator | Dec 1992 |
| 3515 | RBM Oil LLC | Hillsboro, KS 67063 | Oil Operator | Jul 2024 |
| 3516 | RCR Drilling & P | | Oil & Gas Operator | Apr 1992 |
| 3517 | RCS Oil | | Oil Operator | Jul 2024 |
| 3518 | RDH Enterprises, Inc. | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 3519 | Reach Group-Reac | | Oil & Gas Operator | Apr 1995 |
| 3520 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 3521 | Reach Petroleum Corporation | Wichita, KS 67218 | Oil & Gas Operator | Dec 2009 |
| 3522 | Reata Petroleum LLC | Independence, KS 67301 | Oil & Gas Operator | Jul 2024 |
| 3523 | Rebel Oil LLC | | Oil Operator | Jul 2024 |
| 3524 | Recovery Resourc | | Oil Operator | Dec 1986 |
| 3525 | Red Bear Drillin | | Oil & Gas Operator | Sep 1992 |
| 3526 | Red Buck Oil Co. | Copan, OK 74022-0215 | Oil Operator | Nov 2009 |
| 3527 | Red Cedar Oil, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2024 |
| 3528 | Red Cloud Exploration Operating LLC | Calabasas, CA 91302 | Oil Operator | Feb 2016 |
| 3529 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jul 2024 |
| 3530 | Red Hills Resources, Inc. | Englewood, KS 67840 | Oil & Gas Operator | Jul 2024 |
| 3531 | Red Jack Oil LLC | | Oil Operator | May 2013 |
| 3532 | Red Mountain Oil LLC | Golden, CO 80402 | Oil Operator | Nov 1997 |
| 3533 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Jul 2024 |
| 3534 | Red Point Oil | | Oil Operator | May 2019 |
| 3535 | Redboot Production, Inc | Stafford, KS 67578 | Gas Operator | Jan 2017 |
| 3536 | Redbud Oil & Gas Operating, LLC | Spring, TX 77379 | Oil & Gas Operator | Jul 2024 |
| 3537 | Reddig Enterprises Inc. | Gorham, KS 67640 | Oil Operator | Jul 2024 |
| 3538 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Sep 2024 |
| 3539 | Redstone Oil & G | | Oil Operator | Sep 1989 |
| 3540 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 3541 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | Sep 2024 |
| 3542 | Redtail Resources, LLC | Shawnee, KS 66226 | Oil Operator | Jun 2024 |
| 3543 | Reed Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2005 |
| 3544 | Reed Oil, LLC | Louisburg, KS 66053 | Oil Operator | Jul 2024 |
| 3545 | Reed, George A. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 3546 | Reef Exploration Corporation | Richardson, TX 75080 | Oil Operator | Sep 2019 |
| 3547 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | Jul 2024 |
| 3548 | Reese Exploratio | | Oil & Gas Operator | Mar 1995 |
| 3549 | Reese Oil Company | Raytown, MO 64133 | Oil Operator | Jan 1999 |
| 3550 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 3551 | Regency Midcon Gas LLC | Dallas, TX 75201 | Oil Operator | Oct 2014 |
| 3552 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 3553 | Reichlinger Business Services | | Oil Operator | Apr 2014 |
| 3554 | Reif Oil & Gas Company LLC | Hoisington, KS 67544 | Oil Operator | Aug 2010 |
| 3555 | Reif Oil Operati | | Oil Operator | Nov 1988 |
| 3556 | Reilly Oil Company, Inc. | Wakeeney, KS 67672 | Oil Operator | Jul 2024 |
| 3557 | Reilly Oil E & P | | Oil Operator | Jul 2024 |
| 3558 | Relative Energy, Inc. | Lindsborg, KS 67456 | Oil Operator | Nov 2019 |
| 3559 | Reliance Oil, LLC | Gridley, KS 66852 | Oil Operator | Jul 2024 |
| 3560 | Remco Ener Corpo | | Oil & Gas Operator | Dec 1994 |
| 3561 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 3562 | Remington Financ | | Oil Operator | Oct 1994 |
| 3563 | Renegade Resources Corp. | Reno, NV 89511 | Oil & Gas Operator | Jul 2024 |
| 3564 | Renick Energy, L.C. | Cimarron, KS 67835 | Gas Operator | Apr 2016 |
| 3565 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Nov 2024 |
| 3566 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 3567 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 3568 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 3569 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 3570 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Jul 2024 |
| 3571 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Jul 2024 |
| 3572 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 3573 | Reynolds Oil Co. | | Oil Operator | Nov 2005 |
| 3574 | RFB Exploration | | Oil Operator | Feb 1981 |
| 3575 | RGN Company, Inc. | Stockton, KS 67669 | Oil Operator | Jun 2024 |
| 3576 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Jul 2024 |
| 3577 | Rhea, Andrew | Galva, KS 67443 | Oil & Gas Operator | May 2024 |
| 3578 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |
| 3579 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 3580 | Rhodes Well Service | | Oil Operator | Jul 2024 |
| 3581 | Rice Engineering | | Oil & Gas Operator | Jul 1988 |
| 3582 | Rice Engineering Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 3583 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 3584 | Rice Production Company | | Oil Operator | Dec 2019 |
| 3585 | Richard Engineer | | Oil Operator | Mar 1991 |
| 3586 | Richard Oil Comp | | Oil Operator | Mar 1992 |
| 3587 | Richardson And Son , Inc. | Winfield, KS 67156 | Oil Operator | Jul 2024 |
| 3588 | Richardson Developments | | Oil Operator | Jul 2024 |
| 3589 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 3590 | Richardson Oil | | Oil & Gas Operator | Dec 2019 |
| 3591 | Richardson Oil Operating | | Oil & Gas Operator | Dec 2009 |
| 3592 | Richey Heartsill | | Oil Operator | Feb 1991 |
| 3593 | Richlan Drilling | | Oil Operator | Dec 1994 |
| 3594 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Jul 2024 |
| 3595 | Richland Oil Investments, LLC | Palco, KS 67657 | Oil Operator | Jul 2024 |
| 3596 | Rick'S Well Service | Cherryvale, KS 67335 | Oil & Gas Operator | Apr 2023 |
| 3597 | Rickerson, Russell | Rantoul, KS 66079 | Oil Operator | Jul 2024 |
| 3598 | Rider Oil & Gas | | Oil Operator | Aug 1991 |
| 3599 | Rider, Don C. | Medicine Lodge, KS 67104 | Gas Operator | Mar 2000 |
| 3600 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Jul 2024 |