| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | J & D Investment Co. | Oil & Gas Operator | Feb 2025 | |
| 2 | J & M Water Service, Inc. | Pratt, KS 67124 | Oil Operator | Feb 2000 |
| 3 | J D Dreiling Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 4 | J.R. Oil Productions | Oil Operator | Jul 2019 | |
| 5 | James W. Collins Oil Operations | Oil Operator | Dec 2009 | |
| 6 | Jandie Oil Compa | Oil Operator | Jul 1990 | |
| 7 | Jantz & Associat | Oil & Gas Operator | Feb 1991 | |
| 8 | Jel Resources LLC | Castle Rock, CO 80109 | Oil & Gas Operator | Jun 2025 |
| 9 | JFW Incorporated | Plevna, KS 67568 | Oil & Gas Operator | Oct 2006 |
| 10 | John O. Farmer, Inc. | Oil & Gas Operator | Dec 1996 | |
| 11 | Jones Oil, LLC | St John, KS 67576 | Oil & Gas Operator | Jun 2025 |