| 1 | J & D Investment | | Oil Operator | Oct 1993 |
| 2 | J & D Investment Co. | | Oil & Gas Operator | Feb 2025 |
| 3 | J & H Oil Compan | | Oil Operator | Jul 1995 |
| 4 | J & H Oil Company, A General Partnership | Lincolnville, KS 66858 | Oil Operator | Jan 2002 |
| 5 | J & J Contract Pumping LLC | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 6 | J & J Oil, A General Partnership | Mound City, KS 66056 | Oil Operator | Dec 2019 |
| 7 | J & M Oil Co | Overland PK, KS 66209 | Oil & Gas Operator | Jun 2025 |
| 8 | J & M Oil Compan | | Oil Operator | Oct 1993 |
| 9 | J & M Production | Luling, TX 78648 | Oil & Gas Operator | Nov 2019 |
| 10 | J & M Water Serv | | Oil Operator | Sep 1992 |
| 11 | J & M Water Service, Inc. | Pratt, KS 67124 | Oil Operator | Feb 2000 |
| 12 | J & P Oil Compan | | Oil Operator | Jul 1991 |
| 13 | J And A Oil, LLC | Hays, KS 67601 | Oil Operator | Feb 2020 |
| 14 | J And L Oil Enterprises, Inc. | Winfield, KS 67156 | Oil Operator | Jun 2003 |
| 15 | J B Gas Detectors, Inc. | Pratt, KS 67124 | Oil Operator | Oct 1994 |
| 16 | J C B Resources | | Oil Operator | Apr 1990 |
| 17 | J Carter Oil | | Oil Operator | Dec 2024 |
| 18 | J D Dreiling Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 19 | J D Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2005 |
| 20 | J E B Oil Resear | | Oil & Gas Operator | Nov 1993 |
| 21 | J M K Incorporat | | Oil & Gas Operator | Dec 1996 |
| 22 | J W Oil Co. | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 23 | J&H Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Oct 2025 |
| 24 | J&S Jackson Oil | | Oil Operator | Jun 2025 |
| 25 | J-F Oil Company LLC | Hays, KS 67601 | Oil & Gas Operator | Dec 2002 |
| 26 | J-V Oil, LLC | Chanute, KS 66720 | Oil & Gas Operator | Jun 2025 |
| 27 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Oct 2025 |
| 28 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 29 | J. D. & M., Inc. | Cherryvale, KS 67335 | Oil Operator | May 2025 |
| 30 | J. Herrick Pro | | Oil Operator | Feb 2025 |
| 31 | J. K. Brown, Inc. | Littleton, CO 80161 | Gas Operator | Dec 2019 |
| 32 | J. W. Oil | | Oil Operator | Jun 2025 |
| 33 | J.D. Drilling Co. | Basehor, KS 66007 | Oil & Gas Operator | Dec 2023 |
| 34 | J.E.B. Oil Research, Inc. | Neodesha, KS 66757 | Gas Operator | Sep 2003 |
| 35 | J.H. R., Inc. | Bridgeville, PA 15017 | Oil Operator | Jan 2013 |
| 36 | J.H.R. Corporation | Bridgeville, PA 15017 | Oil & Gas Operator | Jul 2001 |
| 37 | J.P. Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 38 | J.R. Oil Company | Houston, TX 77007 | Oil & Gas Operator | Jul 2019 |
| 39 | J.R. Oil Productions | | Oil Operator | Jul 2019 |
| 40 | Jack Exploration, Inc. | Sulphur, OK 73086 | Oil & Gas Operator | Oct 2017 |
| 41 | Jack W Sanders & Son, General Partnership | Wellsville, KS 66092 | Oil Operator | Dec 2024 |
| 42 | Jackknife Oil | Longton, KS 67352 | Oil Operator | Apr 1989 |
| 43 | Jackman & Jackma | | Oil Operator | Jan 1986 |
| 44 | Jackson Brothers | | Oil Operator | Dec 1996 |
| 45 | Jackson Brothers, L.L.C. | Eureka, KS 67045 | Oil Operator | Jun 2025 |
| 46 | Jackson Dorwin R | | Oil Operator | Sep 1995 |
| 47 | Jackson John J | | Oil Operator | Nov 1993 |
| 48 | Jackson, Brian & Janet | Elsmore, KS 66732 | Oil Operator | Jun 2025 |
| 49 | Jackson, Ethan | Mapleton, KS 66754 | Oil Operator | May 2025 |
| 50 | Jackson, Joshua And Reacreisha | Mapleton, KS 66754 | Oil Operator | Jun 2025 |
| 51 | Jackson, Levi | Mound City, KS 66056 | Oil Operator | Jun 2025 |
| 52 | Jacobs Fred T | | Oil Operator | Apr 1991 |
| 53 | Jacobs, Gary D. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2016 |
| 54 | Jacobsen Michael | | Oil Operator | Dec 1996 |
| 55 | Jad Petroleum Corporation | Colorado Springs, CO 80906 | Oil & Gas Operator | Aug 1998 |
| 56 | Jade Petroleum C | | Oil & Gas Operator | Mar 1985 |
| 57 | Jade Resources I | | Gas Operator | Jan 1989 |
| 58 | Jade Resources Inc | Englewood, CO 80112 | Oil Operator | Jul 1998 |
| 59 | Jaed Production Co., | Arkansas City, KS 67005 | Oil & Gas Operator | Mar 2024 |
| 60 | Jag Petroleum LLC | Houston, TX 77058 | Oil Operator | Nov 2009 |
| 61 | Jaguar Petroleum | | Oil Operator | Jul 1994 |
| 62 | Jake'S Oil Co. | | Oil Operator | Oct 2019 |
| 63 | Jako Productions | | Oil Operator | Jul 2014 |
| 64 | James B. Read Operating, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |
| 65 | James P. Williams Enterprises, Inc. | Palco, KS 67657 | Oil Operator | Jun 2025 |
| 66 | James Production, Inc. | Yates Center, KS 66783 | Oil Operator | Jun 2025 |
| 67 | James W. Collins Oil Operations | | Oil Operator | Dec 2009 |
| 68 | Jandie Oil Compa | | Oil Operator | Jul 1990 |
| 69 | Jantz & Associat | | Oil & Gas Operator | Feb 1991 |
| 70 | Jas Oil Company | Winfield, KS 67156 | Oil & Gas Operator | Dec 1995 |
| 71 | Jason Oil Compan | | Oil Operator | Sep 1992 |
| 72 | Jason Oil Company | | Oil Operator | Dec 2014 |
| 73 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 74 | Jaspar Co. | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 75 | Jaxco Energy, A General Partnership | Garnett, KS 66032 | Oil Operator | May 2025 |
| 76 | Jay Boy Oil Inco | | Oil & Gas Operator | May 1992 |
| 77 | Jay C. Boyer Oil | | Oil Operator | Nov 2009 |
| 78 | Jay M. Schendel, A General Partnership | Wellsville, KS 66092 | Oil Operator | Dec 2019 |
| 79 | Jayhawk Energy Inc. | Spokane, WA 99202 | Oil & Gas Operator | May 2016 |
| 80 | Jayhawk Exploration LLC | Frederickburg, TX 78624 | Oil Operator | Jul 2009 |
| 81 | Jayson David Company | Seward, KS 67576 | Oil Operator | Apr 2009 |
| 82 | JBG Oil & Gas Company LLC | Ashland, KS 67831 | Oil & Gas Operator | Jun 2025 |
| 83 | JBM Oil, LLC | Ottawa, KS 66067 | Oil Operator | Dec 2019 |
| 84 | JCS Operating LLC | Guymon, OK 73942 | Oil & Gas Operator | Jun 2025 |
| 85 | JD Production Co | Waco, TX 76702 | Oil & Gas Operator | Dec 2009 |
| 86 | Jedona Energy, LLC | | Oil Operator | Apr 2004 |
| 87 | Jeff'S Oilwell Supervision | | Oil Operator | Apr 2025 |
| 88 | Jeffery Energy Corporation | Meade, KS 67864 | Gas Operator | Dec 2019 |
| 89 | Jeffries, Peter | Leawood, KS 66224 | Oil Operator | Aug 2021 |
| 90 | Jel Resources, LLC | Castle Rock, CO 80109 | Oil & Gas Operator | Jun 2025 |
| 91 | Jenkins & Broyle | | Oil & Gas Operator | Sep 1991 |
| 92 | Jenkins & Broyles Production Company | | Oil Operator | Dec 2006 |
| 93 | Jenkins & Sons Production, Inc. | Arkansas City, KS 67005 | Oil Operator | Jul 2014 |
| 94 | Jenkins, Don(Deceased)Estate | Arkansas City, KS 67005 | Oil & Gas Operator | Dec 2009 |
| 95 | Jenkins, Donnie G. Jr. | Arkansas City, KS 67005 | Oil Operator | Dec 2019 |
| 96 | Jennings Drillin | | Oil & Gas Operator | Jul 1988 |
| 97 | Jernigan Steve I | | Oil Operator | Mar 1993 |
| 98 | Jerry Patterson Oil | | Oil Operator | May 2004 |
| 99 | Jet Drilling Cor | | Oil Operator | Oct 1995 |
| 100 | Jet Drilling Corp. | Scottsdale, AZ 85252 | Oil & Gas Operator | Dec 1996 |