| 1 | B M & S Oil | | Oil Operator | Apr 1986 |
| 2 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Oct 2024 |
| 3 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Feb 2025 |
| 4 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 5 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 6 | Bruce Lonny | | Oil Operator | Sep 1992 |
| 7 | Buckeye West, LLC | Wooster, OH 44691 | Oil Operator | Oct 2024 |
| 8 | Cap Operating Inc. | Borger, TX 79008 | Oil & Gas Operator | Feb 2025 |
| 9 | Casebeer, Inc. | McPherson, KS 67460 | Oil Operator | Oct 2024 |
| 10 | Clinton Bowers Estate | Manhatten, KS 66502 | Oil Operator | Dec 1998 |
| 11 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 12 | D & R Oil Properties | | Oil Operator | May 1998 |
| 13 | D S & W Well Servicing, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 14 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Oct 2024 |
| 15 | Decker Petroleum | | Oil & Gas Operator | Oct 2002 |
| 16 | Don Sims Oil | | Oil Operator | Oct 2024 |
| 17 | Edwards Oil Properties | | Oil Operator | Dec 2009 |
| 18 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Oct 2024 |
| 19 | Falcon Energy Co | | Oil Operator | Apr 1992 |
| 20 | Fyler, M. A. | Rangley, CO 81648 | Oil Operator | Mar 1988 |
| 21 | Graves Drilling | | Oil & Gas Operator | Sep 1995 |
| 22 | Groves, Frank | Arkansas City, KS 67005 | Oil & Gas Operator | Mar 1995 |
| 23 | H-30 Incorporate | | Oil & Gas Operator | Nov 1990 |
| 24 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Oct 2024 |
| 25 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Oct 2024 |
| 26 | JD Production Co | Waco, TX 76702 | Oil & Gas Operator | Dec 2009 |
| 27 | Jones, Cal | Canton, KS 67428 | Oil & Gas Operator | Mar 2002 |
| 28 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Oct 2024 |
| 29 | Krehbiel Oil Com | | Oil & Gas Operator | Mar 1995 |
| 30 | Loewen Operator, Inc. | Canton, KS 67428 | Oil & Gas Operator | Oct 2024 |
| 31 | Lonny Bruce Operations, L.L.C. | McPherson, KS 67460 | Oil & Gas Operator | Apr 2009 |
| 32 | M G Oil Inc | Russell, KS 67665 | Oil Operator | Oct 2024 |
| 33 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |
| 34 | Melland Drilling | | Oil Operator | Nov 1992 |
| 35 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Dec 2024 |
| 36 | Oil Partners | Salina, KS 67401 | Oil Operator | Jun 2001 |
| 37 | Oil Partners, LLC | Salina, KS 67401 | Oil Operator | Oct 2024 |
| 38 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 39 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 40 | Perera Ray & Den | | Oil Operator | Sep 1994 |
| 41 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 42 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 43 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 44 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 45 | Richardson Developments | | Oil Operator | Sep 2024 |
| 46 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Oct 2024 |
| 47 | Robert Hopkins Operations, LLC | Salina, KS 67401 | Oil Operator | Nov 2019 |
| 48 | Scott'S Production, LLC | Roxbury, KS 67476 | Oil Operator | Oct 2024 |
| 49 | Scott'S Well Service Inc | Roxbury, KS 67476 | Oil Operator | Nov 2012 |
| 50 | Sheldon Brothers Agency | Salina, KS 67402 | Oil Operator | May 1998 |
| 51 | Silver Creek Oil | Merkel, TX 79536 | Oil & Gas Operator | Aug 2003 |
| 52 | Sterling Drillin | | Oil & Gas Operator | Mar 1992 |
| 53 | Te-Pe Oil & Gas | | Oil & Gas Operator | Oct 2024 |
| 54 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 55 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 56 | Tom Brown Construction, Inc. | Astor, FL 32102 | Oil Operator | Oct 2024 |
| 57 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2023 |
| 58 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2025 |
| 59 | Voigt O & G Comp | | Oil & Gas Operator | Nov 1993 |
| 60 | Voigt Oil & Gas Co., Inc. | McPherson, KS 67460 | Oil Operator | Oct 2024 |
| 61 | White Hawk Oil C | | Oil & Gas Operator | Sep 1995 |
| 62 | Xenex Incorporat | | Oil Operator | Mar 1991 |