| 1 | Ace Oil Company | | Oil Operator | Mar 2025 |
| 2 | Ainsworth Operating Co. | Salem, OR 97302 | Oil Operator | Mar 2025 |
| 3 | American Warrior | | Oil & Gas Operator | Mar 2025 |
| 4 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Apr 2025 |
| 5 | Amerkan Resource | | Oil Operator | Jan 1994 |
| 6 | Ares Energy, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 7 | Baird Oil Company LLC | Logan, KS 67646 | Oil Operator | Mar 2025 |
| 8 | Bale, Charles R. | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2014 |
| 9 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Mar 2025 |
| 10 | Becker, Lavern | Russell, KS 67665 | Oil Operator | Oct 1995 |
| 11 | Bell Oil Company | | Oil & Gas Operator | Oct 1985 |
| 12 | Bennett & Schulte Oil Co., A General Partnership | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 13 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 14 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 15 | Bickle Energies LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16 | Big 'O' | | Oil Operator | Mar 2025 |
| 17 | Bird Dog Oil, LLC | Denver, CO 80202 | Oil Operator | Mar 2025 |
| 18 | Black Frank J | | Oil & Gas Operator | Jan 1994 |
| 19 | Blackhawk Energy | | Oil Operator | Dec 1993 |
| 20 | Boger Brothers O | | Oil Operator | Jul 1995 |
| 21 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 22 | Borell Oil Compa | | Oil Operator | Nov 1986 |
| 23 | Borell, Albert W. | Wilson, KS 67490 | Oil Operator | Jul 2005 |
| 24 | Boxberger Carl O | | Oil Operator | May 1994 |
| 25 | Boxberger, Carl Oil, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 26 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 27 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 28 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 29 | C K Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 30 | Cannan Calvin B | | Oil Operator | Jul 1991 |
| 31 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 32 | Caroden Energy LLC | Wake Forest, NC 27587 | Oil Operator | Feb 2025 |
| 33 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Mar 2025 |
| 34 | Catt Drilling Co. | Holyrood, KS 67450 | Oil Operator | Aug 1989 |
| 35 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2025 |
| 36 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 37 | Cincris Energy C | | Oil & Gas Operator | Jun 1991 |
| 38 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 39 | Comanche Product | | Oil & Gas Operator | Jan 1992 |
| 40 | Comanche Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2006 |
| 41 | Connell, Mark Allen | Claflin, KS 67525 | Oil Operator | Mar 2025 |
| 42 | Conoco Incorpora | | Oil & Gas Operator | Apr 1988 |
| 43 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Apr 2025 |
| 44 | D S & W Well Ser | | Oil Operator | Nov 1996 |
| 45 | D S & W Well Servicing, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 46 | D. R. Lauck Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2019 |
| 47 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Oct 2023 |
| 48 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 49 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Apr 2025 |
| 50 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2025 |
| 51 | Davies & Company | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2000 |
| 52 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 53 | Davis Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Aug 2021 |
| 54 | Davis, Billy F. | Tulsa, OK 74152 | Oil Operator | Jun 1988 |
| 55 | Derrick-Amer Oil | | Oil Operator | Dec 1991 |
| 56 | Dobrinski, Mark E., A General Partnership | Coldwater, KS 67029 | Oil Operator | Feb 2008 |
| 57 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Mar 2025 |
| 58 | Driscoll, Jerry J Oil Investment Inc | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 59 | Eagle Petroleum, Inc. | Ellinwood, KS 67526 | Oil Operator | Mar 2025 |
| 60 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Apr 2025 |
| 61 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2025 |
| 62 | Ellsworth Systems, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2005 |
| 63 | Falcon Energy Co | | Oil Operator | Apr 1992 |
| 64 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 65 | Folk Oil | | Oil Operator | Dec 2009 |
| 66 | Four-Way Oper In | | Oil Operator | Aug 1994 |
| 67 | G L M Company | | Oil Operator | Mar 2025 |
| 68 | Gable Oil Co. | Chase, KS 67524 | Oil Operator | Sep 1998 |
| 69 | Gable Well Service, Inc. | Chase, KS 67524 | Oil Operator | Apr 1998 |
| 70 | Gilmore Tank Service | Chase, KS 67524 | Oil Operator | Apr 2005 |
| 71 | Globe Operating, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 72 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 73 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Mar 2025 |
| 74 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 75 | Gusher Oil | | Oil Operator | Jul 2004 |
| 76 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Mar 2025 |
| 77 | Har-Ken Agent, Ok | Owensboro, KY 42302 | Oil Operator | Mar 2025 |
| 78 | Harbacek Florence | Holyrood, KS 67450 | Oil Operator | Aug 2002 |
| 79 | Herman L. Loeb, LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Mar 2025 |
| 80 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Mar 2025 |
| 81 | Hoffman Oil, Inc. | Claflin, KS 67525 | Oil Operator | Feb 2025 |
| 82 | Horizon Oil & Ga | | Oil & Gas Operator | Jan 1992 |
| 83 | Hupfer Oil & Gas | Hays, KS 67601 | Oil & Gas Operator | Dec 1993 |
| 84 | Indian Wells Oil | | Oil & Gas Operator | Jul 1995 |
| 85 | Interior Oil Cor | | Gas Operator | Jun 1990 |
| 86 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 87 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 88 | Jay C. Boyer Oil | | Oil Operator | Nov 2009 |
| 89 | JD Production Co | Waco, TX 76702 | Oil & Gas Operator | Dec 2009 |
| 90 | Jezek, Ernest D. | Holyrood, KS 67450 | Oil Operator | Dec 2019 |
| 91 | JJ Leasing | Bartlesville, OK 74006 | Oil Operator | Feb 1989 |
| 92 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 93 | John Roy Evans Oil Company LLC | Claflin, KS 67525 | Oil Operator | Mar 2025 |
| 94 | K & D Oil Compan | | Oil Operator | Apr 1994 |
| 95 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 96 | K.J.S. Oil | | Oil & Gas Operator | Mar 2025 |
| 97 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 98 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Jul 2025 |
| 99 | Krier Kirby Oil | | Oil Operator | Dec 1996 |
| 100 | Krier Oil Operation | | Oil Operator | Feb 2025 |