| 1 | A & G Oil Company | Chanute, KS 66720 | Oil Operator | Sep 1999 |
| 2 | A X & P Incorpor | | Oil Operator | Sep 1996 |
| 3 | A X & P, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jul 2015 |
| 4 | Ace Energy LLC | Leawood, KS 66211 | Oil & Gas Operator | Jun 2025 |
| 5 | Admiral Bay (USA) Inc. | Centennial, CO 80112 | Gas Operator | Jun 2011 |
| 6 | Akandas, Inc. | Chanute, KS 66720 | Oil Operator | Aug 2002 |
| 7 | Arbuckle, A. Dale & Kathryn E. Rev Trust | Grenola, KS 67346 | Oil & Gas Operator | May 2024 |
| 8 | Arcturus Oil Cor | | Oil Operator | Oct 1989 |
| 9 | Asg Holdings LLC | Colorado Springs, CO 80907 | Oil Operator | Nov 2009 |
| 10 | Ashlock, Ernest H. | Overland Park, KS 66202 | Oil Operator | Jun 1987 |
| 11 | Austin, Robert L. | Stafford, KS 67578 | Oil & Gas Operator | Dec 1999 |
| 12 | B & C Oil, A General Partnership | Erie, KS 66733 | Oil Operator | Nov 1999 |
| 13 | B J Oil Company | Corsicana, TX 75109 | Oil & Gas Operator | Oct 2025 |
| 14 | Ballard Lance E | | Oil Operator | Dec 1993 |
| 15 | Bancroft Oil LLC | Chanute, KS 66720 | Oil Operator | May 2025 |
| 16 | Barker Oil | | Oil Operator | Sep 2023 |
| 17 | BDW Oil Company LLC | Chanute, KS 66720 | Oil Operator | Oct 2020 |
| 18 | Birk Petroleum | | Oil Operator | Jun 2025 |
| 19 | Black & White Oper. | Thayer, KS 66776 | Oil Operator | Aug 1998 |
| 20 | Black Diamond Oil, Inc. | Hays, KS 67601 | Oil Operator | Apr 2019 |
| 21 | Blue Mountain Company, Inc. | Wichita, KS 67212 | Oil Operator | Feb 1999 |
| 22 | Blue Top Energy LLC | Westport, CT 06880 | Oil Operator | Dec 2019 |
| 23 | Bonanza Energy C | | Oil & Gas Operator | Sep 1995 |
| 24 | Bonanza Oil Comp | | Oil Operator | Sep 1990 |
| 25 | Bowen Oil & Expl | | Oil & Gas Operator | Apr 1993 |
| 26 | Brecheisen & Lor | | Oil & Gas Operator | Oct 1995 |
| 27 | Brecheisen Oil C | | Oil & Gas Operator | Sep 1993 |
| 28 | Bridwell, Kayla & Gary | Independence, KS 67301 | Oil & Gas Operator | Dec 2009 |
| 29 | Caldwell Entr In | | Oil Operator | Dec 1993 |
| 30 | Carroll Energy, LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2023 |
| 31 | Cherokee Valley | | Oil Operator | May 1993 |
| 32 | Chooch Incorpora | | Gas Operator | Dec 1994 |
| 33 | Christian Operating Company | Cypress, TX 77429 | Oil & Gas Operator | Dec 2014 |
| 34 | Citation Energy | | Oil & Gas Operator | Jul 1993 |
| 35 | City Of Chanute | Chanute, KS 66720 | Oil Operator | Feb 1994 |
| 36 | Cleaver Loraine | | Oil Operator | Dec 1996 |
| 37 | Compressor Syste | | Oil Operator | May 1991 |
| 38 | Connell, Mark Allen | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 39 | Copperhead Oil | Colony, KS 66015 | Oil Operator | Sep 1985 |
| 40 | Cornell Rich M - | | Oil & Gas Operator | May 1993 |
| 41 | Coronado Oil & G | | Oil Operator | Dec 1996 |
| 42 | Cowboy Oil & Gas | Bristow, OK 74010-0057 | Oil & Gas Operator | Jul 2018 |
| 43 | D-Oil Incorporat | | Oil Operator | Aug 1990 |
| 44 | Daniels E L Dril | | Oil Operator | Nov 1995 |
| 45 | Daniels Oil Co. | | Oil Operator | Mar 2025 |
| 46 | Daniels Petroleu | | Oil Operator | Jan 1991 |
| 47 | Davis, Michael G. | Wichita, KS 67212 | Oil & Gas Operator | Jul 1988 |
| 48 | DB Energy, LLC | Baldwin City, KS 66006 | Oil Operator | May 2025 |
| 49 | Denova | | Oil Operator | Jan 1989 |
| 50 | Dorado Gas Resources LLC | Centennial, CO 80112 | Oil & Gas Operator | Jul 2009 |
| 51 | Double 'E' Oil-B | | Oil Operator | Mar 1989 |
| 52 | Drilex Oil & Gas | | Oil Operator | Apr 1987 |
| 53 | Eads Operating C | | Oil Operator | Jun 1990 |
| 54 | Elk Oil Company | Overland Park, KS 66212 | Oil & Gas Operator | Sep 2007 |
| 55 | Entransco Energy LLC | Dewey, OK 74029 | Oil & Gas Operator | Oct 2024 |
| 56 | Evans, Jay - Oil Company | Iola, KS 66749 | Oil Operator | Apr 2001 |
| 57 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 58 | F E W Oil Compan | | Oil Operator | Jul 1993 |
| 59 | Falkin, Richard T. | Hepler, KS 66746 | Oil Operator | Nov 2019 |
| 60 | Finley Oil Compa | | Oil Operator | Oct 1992 |
| 61 | Flint Hills Production Co., Inc. | Gas City, KS 66742 | Oil Operator | Nov 2009 |
| 62 | Fuller Oil | Iola, KS 66749 | Oil Operator | Jun 2001 |
| 63 | G M Enterprises | Chanute, KS 66720 | Oil Operator | Jan 1987 |
| 64 | Galemore Oil Com | | Oil Operator | May 1991 |
| 65 | Galemore, John E. | Chanute, KS 66720 | Oil Operator | Sep 2001 |
| 66 | Geo Oil & Gas Service, A General Partnership | Iola, KS 66749 | Oil & Gas Operator | Dec 2019 |
| 67 | Gillam Chuck Oil | | Oil Operator | Sep 1993 |
| 68 | Graybol-Patton C | | Oil & Gas Operator | Oct 1991 |
| 69 | Gumfory, Shawn | Iola, KS 66749 | Oil Operator | Jul 1998 |
| 70 | H A L Petroleum | | Oil Operator | Oct 1987 |
| 71 | Hackley Okla Inc | | Oil & Gas Operator | Aug 1992 |
| 72 | Hand Oil Co. | Chanute, KS 66720 | Oil Operator | Nov 2000 |
| 73 | Heat Can Oil, LLC | Chanute, KS 66720 | Oil Operator | Jun 2009 |
| 74 | Hennessy Oil Com | | Oil Operator | Mar 1991 |
| 75 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Jun 2024 |
| 76 | Hutton Charles N | | Oil Operator | Dec 1994 |
| 77 | Inter-State Ener | | Oil Operator | Oct 1987 |
| 78 | J & M Oil Co | Overland PK, KS 66209 | Oil & Gas Operator | Jun 2025 |
| 79 | J E B Oil Resear | | Oil & Gas Operator | Nov 1993 |
| 80 | J-V Oil, LLC | Chanute, KS 66720 | Oil & Gas Operator | Jun 2025 |
| 81 | J. W. Oil | | Oil Operator | Jun 2025 |
| 82 | J.E.B. Oil Research, Inc. | Neodesha, KS 66757 | Gas Operator | Sep 2003 |
| 83 | J.R. Oil Company | Houston, TX 77007 | Oil & Gas Operator | Jul 2019 |
| 84 | Jayhawk Exploration LLC | Frederickburg, TX 78624 | Oil Operator | Jul 2009 |
| 85 | K W Oil Well Service. Inc. | Chanute, KS 66720 | Oil Operator | Apr 2017 |
| 86 | K.W.S. Oil Development | Chanute, KS 66720 | Oil Operator | May 2004 |
| 87 | Kan-Texco Incorp | | Oil & Gas Operator | Dec 1994 |
| 88 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 89 | Kansas Petroleum, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2007 |
| 90 | Katana Resources | | Oil & Gas Operator | Aug 1984 |
| 91 | Kelt Energy Inco | | Oil & Gas Operator | Sep 1995 |
| 92 | Kem Energy, Inc. | Katy, TX 77450 | Oil & Gas Operator | Oct 2025 |
| 93 | Kephart Drilling, Inc. | Thayer, KS 66776 | Oil & Gas Operator | Dec 2008 |
| 94 | Kepley Brothers | Chanute, KS 66720 | Oil Operator | Sep 1992 |
| 95 | Kepley Well Service, LLC | Chanute, KS 66720 | Oil Operator | Mar 2025 |
| 96 | Kepley, L.F. | Wichita, KS 67204 | Oil Operator | Feb 1986 |
| 97 | Kepley, William Samuel | Chanute, KS 66720 | Oil Operator | Nov 2024 |
| 98 | Kindervag Robert | | Oil Operator | Jun 1991 |
| 99 | King Energy Co. | | Oil Operator | Nov 2019 |
| 100 | King Energy Comp | | Oil Operator | Dec 1996 |