| 3401 | R.S. Glaze Drilling | | Oil Operator | Jan 1998 |
| 3402 | R.T. Enterprises Of Kansas, Inc. | Louisburg, KS 66053 | Oil Operator | Dec 2023 |
| 3403 | Rader Oil Compan | | Oil Operator | May 1987 |
| 3404 | Rader Oil Company | | Oil Operator | Jan 2024 |
| 3405 | Raelee Oil LLC | Plainville, KS 67663 | Oil Operator | Jul 2021 |
| 3406 | Raida, Junior V. | Neodesha, KS 66757 | Oil Operator | Jul 2013 |
| 3407 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 3408 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Jan 2024 |
| 3409 | Raker Resources LLC | Houston, TX 77042 | Oil & Gas Operator | May 2024 |
| 3410 | Rakestraw Bros., L.L.C | El Dorado, KS 67042 | Oil & Gas Operator | Dec 2019 |
| 3411 | Ram Oil & Gas | Blackwell, OK 74631 | Oil & Gas Operator | May 2013 |
| 3412 | Ram Petroleum Co | | Oil & Gas Operator | Sep 1983 |
| 3413 | Ram Petroleum Corporation | Wichita, KS 67202 | Gas Operator | Feb 2023 |
| 3414 | Ram Service - Mi | | Oil Operator | Sep 1994 |
| 3415 | Rama Operating C | | Oil & Gas Operator | Dec 1996 |
| 3416 | Rama Operating Co., Inc. | Stafford, KS 67578 | Oil & Gas Operator | Feb 2024 |
| 3417 | Ramco Drilling S | | Oil & Gas Operator | Dec 1992 |
| 3418 | Ramco Energy Corporation | FT. Lauderdale, FL 33312 | Oil & Gas Operator | Dec 2008 |
| 3419 | Ramoil Company | Winfield, KS 67156 | Oil & Gas Operator | May 1987 |
| 3420 | Ramrod Oil Co., A General Partnership | Iola, KS 66749 | Oil Operator | Nov 2001 |
| 3421 | Ramshorn Resources, LLC | Wichita, KS 67202 | Oil & Gas Operator | Jan 2024 |
| 3422 | Randon Production Co. | Marion, KS 66861 | Oil & Gas Operator | Dec 2023 |
| 3423 | Randy J Walker Oil Company | | Oil Operator | Oct 2023 |
| 3424 | Raney Oil Company | Lawrence, KS 66047 | Oil & Gas Operator | May 1999 |
| 3425 | Raney Oil Company, LLC | Lawrence, KS 66049 | Oil & Gas Operator | Jan 2024 |
| 3426 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 3427 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 3428 | Ranger Oil & Gas, Inc. | Okay, OK 74446 | Oil Operator | Jan 2007 |
| 3429 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 3430 | Rankin, Lennes | Sharon, KS 67138 | Gas Operator | Jan 2024 |
| 3431 | Rapid Well Servi | | Oil Operator | Feb 1995 |
| 3432 | Rapid Well Service, Inc. | Russell, KS 67665 | Oil Operator | Nov 2023 |
| 3433 | Ratex Corporation | Cambridge, WI 53523 | Oil Operator | Jun 2011 |
| 3434 | Ratzlaff, Steven | Galva, KS 67443 | Oil Operator | Dec 1996 |
| 3435 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Jan 2024 |
| 3436 | Raw Energy Corporation Of Kansas | Weatherford, TX 76086 | Gas Operator | Dec 2019 |
| 3437 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2024 |
| 3438 | Raygary Oil Co. | Havana, KS 67347 | Oil Operator | May 2002 |
| 3439 | Raygary Oil Comp | | Oil Operator | Sep 1991 |
| 3440 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jan 2024 |
| 3441 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 3442 | Razook Oil Compa | | Oil Operator | Aug 1990 |
| 3443 | RBM Oil LLC | Hillsboro, KS 67063 | Oil Operator | Jan 2024 |
| 3444 | RCR Drilling & P | | Oil & Gas Operator | Apr 1992 |
| 3445 | RCS Oil | | Oil Operator | Jan 2024 |
| 3446 | RDH Enterprises, Inc. | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 3447 | Reach Group-Reac | | Oil & Gas Operator | Apr 1995 |
| 3448 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 3449 | Reach Petroleum Corporation | Wichita, KS 67218 | Oil & Gas Operator | Dec 2009 |
| 3450 | Reata Petroleum LLC | Independence, KS 67301 | Oil & Gas Operator | Jan 2024 |
| 3451 | Rebel Oil LLC | | Oil Operator | Jan 2024 |
| 3452 | Recovery Resourc | | Oil Operator | Dec 1986 |
| 3453 | Red Bear Drillin | | Oil & Gas Operator | Sep 1992 |
| 3454 | Red Buck Oil Co. | Copan, OK 74022-0215 | Oil Operator | Nov 2009 |
| 3455 | Red Cedar Oil, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jan 2024 |
| 3456 | Red Cloud Exploration Operating LLC | Calabasas, CA 91302 | Oil Operator | Feb 2016 |
| 3457 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jan 2024 |
| 3458 | Red Hills Resources, Inc. | Englewood, KS 67840 | Oil & Gas Operator | Jan 2024 |
| 3459 | Red Jack Oil LLC | | Oil Operator | May 2013 |
| 3460 | Red Mountain Oil LLC | Golden, CO 80402 | Oil Operator | Nov 1997 |
| 3461 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Jan 2024 |
| 3462 | Red Point Oil | | Oil Operator | May 2019 |
| 3463 | Redbud Oil & Gas Operating, LLC | Spring, TX 77379 | Oil & Gas Operator | Jan 2024 |
| 3464 | Reddig Enterprises Inc. | Gorham, KS 67640 | Oil Operator | Jan 2024 |
| 3465 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2024 |
| 3466 | Redstone Oil & G | | Oil Operator | Sep 1989 |
| 3467 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 3468 | Redtail Investments LLC | Oklahoma City, OK 73179 | Oil & Gas Operator | Feb 2024 |
| 3469 | Redtail Resources, LLC | Shawnee, KS 66226 | Oil Operator | Dec 2023 |
| 3470 | Reed Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2005 |
| 3471 | Reed Oil, LLC | Louisburg, KS 66053 | Oil Operator | Jan 2024 |
| 3472 | Reed, George A. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 3473 | Reef Exploration Corporation | Richardson, TX 75080 | Oil Operator | Sep 2019 |
| 3474 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | Nov 2023 |
| 3475 | Reese Exploratio | | Oil & Gas Operator | Mar 1995 |
| 3476 | Reese Oil Company | Raytown, MO 64133 | Oil Operator | Jan 1999 |
| 3477 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 3478 | Regency Midcon Gas LLC | Dallas, TX 75201 | Oil Operator | Oct 2014 |
| 3479 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 3480 | Reichlinger Business Services | | Oil Operator | Apr 2014 |
| 3481 | Reif Oil & Gas Company LLC | Hoisington, KS 67544 | Oil Operator | Aug 2010 |
| 3482 | Reif Oil Operati | | Oil Operator | Nov 1988 |
| 3483 | Reilly Oil Company, Inc. | Wakeeney, KS 67672 | Oil Operator | Jan 2024 |
| 3484 | Relative Energy, Inc. | Lindsborg, KS 67456 | Oil Operator | Nov 2019 |
| 3485 | Reliance Oil, LLC | Gridley, KS 66852 | Oil Operator | Jan 2024 |
| 3486 | Remco Ener Corpo | | Oil & Gas Operator | Dec 1994 |
| 3487 | Remco Energy Corporation | Independence, MO 64055 | Oil & Gas Operator | Nov 2009 |
| 3488 | Remington Financ | | Oil Operator | Oct 1994 |
| 3489 | Renegade Resources Corp. | Reno, NV 89511 | Oil & Gas Operator | Nov 2023 |
| 3490 | Renick Energy, L.C. | Cimarron, KS 67835 | Gas Operator | Apr 2016 |
| 3491 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2024 |
| 3492 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 3493 | Resource Venture | | Oil & Gas Operator | Oct 1991 |
| 3494 | Resources & Investment Co. | Mandeville, LA 70448 | Oil Operator | Oct 2023 |
| 3495 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 3496 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Jan 2024 |
| 3497 | Reusch Well Service, Inc. | Ottawa, KS 66067 | Oil Operator | Dec 2023 |
| 3498 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 3499 | Reynolds Oil Co. | | Oil Operator | Nov 2005 |
| 3500 | RFB Exploration | | Oil Operator | Feb 1981 |