| 1 | Aladdin Petroleu | | Oil & Gas Operator | Nov 1995 |
| 2 | Aladdin Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2021 |
| 3 | Allam Carl Oil C | | Oil Operator | Mar 1986 |
| 4 | Allison J A | | Oil & Gas Operator | Nov 1995 |
| 5 | American Warrior | | Oil & Gas Operator | Mar 2025 |
| 6 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Apr 2025 |
| 7 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 8 | Anstine & Musgrove Inc | Ponca City, OK 74602 | Oil & Gas Operator | May 2025 |
| 9 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | May 2025 |
| 10 | Ares Energy, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 11 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
| 12 | Arnold Prodn. | | Oil & Gas Operator | Jan 2006 |
| 13 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 14 | B & B Oil | Lyons, KS 67554 | Oil Operator | Mar 2025 |
| 15 | B & D Oil, LLC | Welda, KS 66091 | Oil Operator | Mar 2025 |
| 16 | Bankoff Oil Comp | | Oil Operator | Jun 1995 |
| 17 | Bankoff Oil Company | Tulsa, OK 74170 | Oil Operator | Sep 2003 |
| 18 | Bear Petroleum | | Oil & Gas Operator | Dec 1996 |
| 19 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Mar 2025 |
| 20 | Bengston Oil, LLC | Windom, KS 67491 | Oil Operator | Aug 2024 |
| 21 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 22 | Bergman Oil Comp | | Oil Operator | Mar 1995 |
| 23 | Big 'O' | | Oil Operator | Mar 2025 |
| 24 | Big Horn Oil Co., Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2013 |
| 25 | Bird Dog Oil, LLC | Denver, CO 80202 | Oil Operator | Mar 2025 |
| 26 | Black Frank J | | Oil & Gas Operator | Jan 1994 |
| 27 | Black Hawk Petro | | Oil Operator | Dec 1993 |
| 28 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 29 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 30 | Boxberger Carl O | | Oil Operator | May 1994 |
| 31 | Boxberger, Carl Oil, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 32 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 33 | Brooks Ron Corpo | | Oil & Gas Operator | Sep 1995 |
| 34 | Brooks, Ron Corporation | Hutchinson, KS 67502 | Gas Operator | Apr 1999 |
| 35 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 36 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 37 | Bruce Lonny | | Oil Operator | Sep 1992 |
| 38 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 39 | Bruce Oil Company, L.L.C. | McPherson, KS 67460 | Oil Operator | Mar 2025 |
| 40 | Bruce Oil Operat | | Oil Operator | Dec 1987 |
| 41 | Bruning, Donald F. | Sterling, KS 67579 | Oil Operator | Apr 2001 |
| 42 | C & C Tank Service, Inc. | Sterling, KS 67579 | Oil Operator | Oct 2020 |
| 43 | C & K Operating LLC | Kingman, KS 67068 | Oil & Gas Operator | Mar 2025 |
| 44 | C K Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 45 | C M X Incorporat | | Oil & Gas Operator | Dec 1996 |
| 46 | Cam Development | | Oil & Gas Operator | Dec 1990 |
| 47 | Camwest Limited Partnership | Denver, CO 80202 | Oil & Gas Operator | Apr 2004 |
| 48 | Capital Energy Group, Inc. | Bardonia, NY 10954 | Oil Operator | Jan 1998 |
| 49 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 50 | Carrie Exploration & Development, LLC | Hays, KS 67601 | Oil & Gas Operator | Feb 2025 |
| 51 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Mar 2025 |
| 52 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | May 2025 |
| 53 | Champion Petrole | | Oil Operator | Jan 1992 |
| 54 | Charter Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 55 | Chase Well Service, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2004 |
| 56 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 57 | Christa Oil Co | Cumberland, OH 43732 | Oil & Gas Operator | Nov 1999 |
| 58 | Christa Oil Comp | | Oil Operator | Nov 1994 |
| 59 | Clinton Production, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 60 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 61 | CNG Producing | New Orleans, LA 70112-6000 | Oil & Gas Operator | Jun 2000 |
| 62 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 63 | Commercial Oil - | | Oil Operator | Apr 1994 |
| 64 | Commonwealth Pet | | Oil & Gas Operator | Nov 1995 |
| 65 | Connell, Mark Allen | Claflin, KS 67525 | Oil Operator | Mar 2025 |
| 66 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 67 | Conoco Incorpora | | Oil & Gas Operator | Apr 1988 |
| 68 | Consolidated Oil | | Oil Operator | Jul 1996 |
| 69 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 70 | Continental Brok | | Oil Operator | Oct 1994 |
| 71 | Coronado Oil & G | | Oil Operator | Dec 1996 |
| 72 | Coronado Oil & Gas, Inc. | Great Bend, KS 67530 | Oil Operator | Jul 2004 |
| 73 | Crude Producers | | Oil & Gas Operator | Sep 1988 |
| 74 | Culver & Grounds | | Oil & Gas Operator | Nov 1995 |
| 75 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Mar 2025 |
| 76 | D & G Oil Compan | | Oil Operator | Mar 1988 |
| 77 | D & W Oil Compan | | Oil Operator | Jan 1987 |
| 78 | D And B Oil | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 79 | D S & W Well Servicing, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 80 | D. R. Lauck Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2019 |
| 81 | Dakota Resources | | Oil & Gas Operator | Jan 1989 |
| 82 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Oct 2023 |
| 83 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Apr 2025 |
| 84 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2025 |
| 85 | Davies & Company | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2000 |
| 86 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 87 | Davis Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Aug 2021 |
| 88 | Davis, Robert E. | Graham, TX 76450 | Oil & Gas Operator | Apr 1997 |
| 89 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Mar 2025 |
| 90 | Dennis Fitzpatrick Rev. Trust | Sterling, KS 67579 | Gas Operator | Mar 2025 |
| 91 | Derrick-Amer Oil | | Oil Operator | Dec 1991 |
| 92 | DMH Petroleum, Inc. | Sterling, KS 67579 | Oil Operator | Mar 2025 |
| 93 | Dobrinski, Mark E., A General Partnership | Coldwater, KS 67029 | Oil Operator | Feb 2008 |
| 94 | Eagle Creek Corporation | Andover, KS 67002 | Oil & Gas Operator | Mar 2025 |
| 95 | Eagle Petroleum | | Oil & Gas Operator | Nov 1995 |
| 96 | Eagle Petroleum, Inc. | Ellinwood, KS 67526 | Oil Operator | Mar 2025 |
| 97 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Apr 2025 |
| 98 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2025 |
| 99 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 100 | Ellinwood Oil Reclaiming Inc | | Oil Operator | Oct 2009 |