| 1 | 3G Production, LLC | Pratt, KS 67124 | Oil & Gas Operator | Mar 2025 |
| 2 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 3 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Mar 2025 |
| 4 | Ace Oil Company | | Oil Operator | Mar 2025 |
| 5 | Afg Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 6 | Allen Drilling C | | Oil & Gas Operator | Nov 1994 |
| 7 | Alpine Drilling | | Oil & Gas Operator | May 1994 |
| 8 | Alpine Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2000 |
| 9 | American Energie | | Oil & Gas Operator | May 1995 |
| 10 | American Warrior | | Oil & Gas Operator | Mar 2025 |
| 11 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Apr 2025 |
| 12 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 13 | Antares Oil Corp | Denver, CO 80202 | Oil & Gas Operator | Oct 2015 |
| 14 | Apache Drilling Co | Kingman, KS 67068 | Oil Operator | Feb 2006 |
| 15 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | May 2025 |
| 16 | Aspen Drilling C | | Oil & Gas Operator | Aug 1988 |
| 17 | Bear Petroleum | | Oil & Gas Operator | Dec 1996 |
| 18 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Mar 2025 |
| 19 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Apr 2025 |
| 20 | Bell Brothers | | Oil Operator | Mar 2025 |
| 21 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2025 |
| 22 | Benchmark Energy LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2023 |
| 23 | Bennett Oil Company, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 24 | Benson Mineral G | | Oil & Gas Operator | Dec 1995 |
| 25 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 26 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 27 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 28 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 29 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 30 | Big 'O' | | Oil Operator | Mar 2025 |
| 31 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 32 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |
| 33 | Blackhawk Explor | | Oil Operator | Jan 1990 |
| 34 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 35 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Mar 2025 |
| 36 | Bob'S Hauling Service, Inc. | St John, KS 67576 | Oil Operator | Feb 2025 |
| 37 | Boger Brothers D | | Oil & Gas Operator | Nov 1992 |
| 38 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 39 | Boyer Jay C | | Oil Operator | Feb 1994 |
| 40 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 41 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 42 | Bristol Resource | | Oil & Gas Operator | Jan 1995 |
| 43 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 44 | Cam Development | | Oil & Gas Operator | Dec 1990 |
| 45 | Cambria Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 46 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 47 | Carl, William E. | Corpus Christi, TX 78471 | Oil Operator | Jul 1986 |
| 48 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 49 | Carroll, Jon M. | Great Bend, KS 67530 | Oil Operator | Dec 2001 |
| 50 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Mar 2025 |
| 51 | Central Energy C | | Oil & Gas Operator | Jun 1994 |
| 52 | Central Energy Corporation | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 53 | Century Oil Mana | | Oil Operator | Apr 1987 |
| 54 | Chapman Energy O | | Oil & Gas Operator | Jun 1993 |
| 55 | Charter Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 56 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Jul 2025 |
| 57 | Cleary Petroleum Corporation | Edmond, OK 73083 | Oil & Gas Operator | Jul 2019 |
| 58 | Clute Oil Corporation | Cherry Hills VIllage, CO 80113 | Oil & Gas Operator | Mar 2025 |
| 59 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 60 | Columbian Servic | | Oil & Gas Operator | Nov 1993 |
| 61 | Condor Energy Inc | Great Bend, KS 67530 | Oil & Gas Operator | Oct 2021 |
| 62 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 63 | Continental Energy | Garden City, KS 67846-0918 | Oil & Gas Operator | Jul 2017 |
| 64 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 65 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Apr 2025 |
| 66 | D.W.S. Properties | Sterling, KS 67579 | Oil Operator | Mar 2006 |
| 67 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 68 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Apr 2025 |
| 69 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2025 |
| 70 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 71 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Mar 2025 |
| 72 | Derrick-Amer Oil | | Oil Operator | Dec 1991 |
| 73 | Deutsch Oil Company | | Oil & Gas Operator | Mar 2025 |
| 74 | Discovery Operat | | Gas Operator | Jul 1988 |
| 75 | DNB Drilling, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2001 |
| 76 | Double 'B' Oil I | | Oil Operator | Feb 1992 |
| 77 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Mar 2025 |
| 78 | Dunne Equities I | | Oil & Gas Operator | Dec 1995 |
| 79 | Dunne Equities, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2014 |
| 80 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 81 | El Chjon Gas Com | | Gas Operator | May 1988 |
| 82 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 83 | Empire Energy E & P LLC | Mayville, NY 14757 | Oil & Gas Operator | Dec 2024 |
| 84 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 85 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 86 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 87 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 88 | G.A.B.S. Oil, A General Partnership | Ness City, KS 67560 | Oil Operator | Aug 2008 |
| 89 | Galloway Drilling Co., Inc. | Wichita, KS 67202 | Oil Operator | Nov 2009 |
| 90 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Jul 2025 |
| 91 | Giles, Benjamin M. | Towanda, KS 67144 | Oil & Gas Operator | Oct 2016 |
| 92 | Gilmore, Jeff | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 93 | Glenwood Resources, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Jan 2025 |
| 94 | Globe Exploratio | | Oil & Gas Operator | Jun 1995 |
| 95 | Gould Oil Inc. | Wichita, KS 67278 | Oil & Gas Operator | Oct 2019 |
| 96 | Gould Oil Incorp | | Oil & Gas Operator | May 1996 |
| 97 | Gra Ex, LLC | Kingman, KS 67068 | Oil & Gas Operator | Oct 2023 |
| 98 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Mar 2025 |
| 99 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 100 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |