| 3501 | Raker Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Sep 2026 |
| 3502 | Rakestraw Bros., L.L.C | El Dorado, KS 67042 | Oil & Gas Operator | Dec 2019 |
| 3503 | Ram Oil & Gas | Blackwell, OK 74631 | Oil & Gas Operator | May 2013 |
| 3504 | Ram Petroleum Co | | Oil & Gas Operator | Sep 1983 |
| 3505 | Ram Petroleum Corporation | Wichita, KS 67202 | Gas Operator | May 2026 |
| 3506 | Ram Service - Mi | | Oil Operator | Sep 1994 |
| 3507 | Rama Operating C | | Oil & Gas Operator | Dec 1996 |
| 3508 | Rama Operating Company Inc | Stafford, KS 67578 | Oil & Gas Operator | Jul 2026 |
| 3509 | Ramco Drilling S | | Oil & Gas Operator | Dec 1992 |
| 3510 | Ramco Energy Corporation | FT. Lauderdale, FL 33312 | Oil & Gas Operator | Dec 2008 |
| 3511 | Ramoil Company | Winfield, KS 67156 | Oil & Gas Operator | May 1987 |
| 3512 | Rampike Resources, LTD | Denver, CO 80202 | Oil Operator | May 2026 |
| 3513 | Ramrod Oil Co., A General Partnership | Iola, KS 66749 | Oil Operator | Nov 2001 |
| 3514 | Ramshorn Resources, LLC | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 3515 | Randon Production Co. | Marion, KS 66861 | Oil & Gas Operator | May 2026 |
| 3516 | Randy J Walker Oil Company | | Oil Operator | Apr 2026 |
| 3517 | Raney Oil Company | Lawrence, KS 66047 | Oil & Gas Operator | May 1999 |
| 3518 | Raney Oil Company, LLC | Lawrence, KS 66049 | Oil & Gas Operator | May 2026 |
| 3519 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 3520 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 3521 | Ranger Oil & Gas, Inc. | Okay, OK 74446 | Oil Operator | Jan 2007 |
| 3522 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 3523 | Rankin, Lennes | Sharon, KS 67138 | Gas Operator | May 2026 |
| 3524 | Rapid Well Servi | | Oil Operator | Feb 1995 |
| 3525 | Rapid Well Service, Inc. | Russell, KS 67665 | Oil Operator | May 2026 |
| 3526 | Ratex Corporation | Cambridge, WI 53523 | Oil Operator | Jun 2011 |
| 3527 | Ratzlaff, Steven | Galva, KS 67443 | Oil Operator | Dec 1996 |
| 3528 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Jun 2026 |
| 3529 | Raw Energy Corporation Of Kansas | Weatherford, TX 76086 | Gas Operator | Dec 2019 |
| 3530 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2026 |
| 3531 | Raygary Oil Co. | Havana, KS 67347 | Oil Operator | May 2002 |
| 3532 | Raygary Oil Comp | | Oil Operator | Sep 1991 |
| 3533 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | May 2026 |
| 3534 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 3535 | Razook Oil Compa | | Oil Operator | Aug 1990 |
| 3536 | Razorback Explor | | Gas Operator | Dec 1992 |
| 3537 | RBM Oil LLC | Hillsboro, KS 67063 | Oil Operator | May 2026 |
| 3538 | RCR Drilling & P | | Oil & Gas Operator | Apr 1992 |
| 3539 | RCS Oil | | Oil Operator | May 2026 |
| 3540 | RDH Enterprises Inc | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 3541 | Reach Group-Reac | | Oil & Gas Operator | Apr 1995 |
| 3542 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 3543 | Reach Petroleum Corporation | Wichita, KS 67218 | Oil & Gas Operator | Dec 2009 |
| 3544 | Reata Petroleum LLC | Independence, KS 67301 | Oil & Gas Operator | May 2026 |
| 3545 | Rebel Oil LLC | | Oil Operator | May 2026 |
| 3546 | Recovery Resourc | | Oil Operator | Dec 1986 |
| 3547 | Red Bear Drillin | | Oil & Gas Operator | Sep 1992 |
| 3548 | Red Buck Oil Company | Copan, OK 74022-0215 | Oil Operator | Nov 2009 |
| 3549 | Red Cedar Oil, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Mar 2026 |
| 3550 | Red Cloud Exploration Operating LLC | Calabasas, CA 91302 | Oil Operator | Feb 2016 |
| 3551 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | May 2026 |
| 3552 | Red Hills Resources, Inc. | Englewood, KS 67840 | Oil & Gas Operator | May 2026 |
| 3553 | Red Jack Oil LLC | | Oil Operator | May 2013 |
| 3554 | Red Mountain Oil LLC | Golden, CO 80402 | Oil Operator | Nov 1997 |
| 3555 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | May 2026 |
| 3556 | Red Point Oil | | Oil Operator | May 2019 |
| 3557 | Redboot Production, Inc | Stafford, KS 67578 | Gas Operator | Jan 2017 |
| 3558 | Redbud Oil & Gas Operating, LLC | Spring, TX 77379 | Oil & Gas Operator | May 2026 |
| 3559 | Reddig Enterprises Inc. | Gorham, KS 67640 | Oil Operator | May 2026 |
| 3560 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Jul 2026 |
| 3561 | Redstone Oil & G | | Oil Operator | Sep 1989 |
| 3562 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 3563 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | Jul 2026 |
| 3564 | Redtail Resources, LLC | Shawnee, KS 66226 | Oil Operator | May 2026 |
| 3565 | Reed Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2005 |
| 3566 | Reed Oil, LLC | Louisburg, KS 66053 | Oil Operator | May 2026 |
| 3567 | Reed, George A. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 3568 | Reef Exploration Corporation | Richardson, TX 75080 | Oil Operator | Sep 2019 |
| 3569 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | May 2026 |
| 3570 | Reese Exploratio | | Oil & Gas Operator | Mar 1995 |
| 3571 | Reese Oil Company | Raytown, MO 64133 | Oil Operator | Jan 1999 |
| 3572 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 3573 | Regency Midcon Gas LLC | Dallas, TX 75201 | Oil Operator | Oct 2014 |
| 3574 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 3575 | Reichlinger Business Services | | Oil Operator | Apr 2014 |
| 3576 | Reif Oil & Gas Company LLC | Hoisington, KS 67544 | Oil Operator | Aug 2010 |
| 3577 | Reif Oil Operati | | Oil Operator | Nov 1988 |
| 3578 | Reilly Oil Company, Inc. | Wakeeney, KS 67672 | Oil Operator | Aug 2022 |
| 3579 | Reilly Oil E & P | | Oil Operator | May 2026 |
| 3580 | Relative Energy, Inc. | Lindsborg, KS 67456 | Oil Operator | Nov 2019 |
| 3581 | Reliance Oil, LLC | Gridley, KS 66852 | Oil Operator | Apr 2026 |
| 3582 | Remco Ener Corpo | | Oil & Gas Operator | Dec 1994 |
| 3583 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 3584 | Remington Financ | | Oil Operator | Oct 1994 |
| 3585 | Renegade Resources Corp. | Reno, NV 89511 | Oil & Gas Operator | Jul 2024 |
| 3586 | Renick Energy, L.C. | Cimarron, KS 67835 | Gas Operator | Apr 2016 |
| 3587 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2026 |
| 3588 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 3589 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 3590 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 3591 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 3592 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | May 2026 |
| 3593 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Dec 2019 |
| 3594 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 3595 | Reynolds Oil Company | | Oil Operator | Nov 2005 |
| 3596 | RFB Exploration | | Oil Operator | Feb 1981 |
| 3597 | RGN Company, Inc. | Stockton, KS 67669 | Oil Operator | Apr 2026 |
| 3598 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | May 2026 |
| 3599 | Rhea, Andrew | Galva, KS 67443 | Oil & Gas Operator | Apr 2026 |
| 3600 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |