| 1 | Jalapeno Operating Company, LLC | Plntersville, TX 77363 | Oil Operator | Oct 2025 |
| 2 | Jay-Dee Operating Company | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Aug 2000 |
| 3 | Jenco Petroleum Corporation | The Woodlands, TX 77380 | Oil Operator | Oct 2025 |
| 4 | Jenex Operating Company Of Texas | Denver, CO 80209 | Oil & Gas Operator | Aug 2003 |
| 5 | Jenex Petroleum Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 6 | Jetco Exploration | Victoria, TX 77903 | Oil & Gas Operator | May 2007 |
| 7 | JJ Production | Freer, TX 78357 | Oil & Gas Operator | Oct 2025 |
| 8 | JN Exploration & Production LP | Billings, MT 59103 | Oil & Gas Operator | Jan 2001 |
| 9 | Joe Kestner, L.L.C. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Feb 2016 |
| 10 | Johnson, William D. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2008 |
| 11 | Jones, L. E. Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Oct 2025 |
| 12 | Jones, R. W. & Co., LTD. | Oklahoma City, OK 73132 | Oil & Gas Operator | Mar 1997 |
| 13 | Jones, R.W. & Co. II, LTD. | Edmond, OK 73034 | Oil & Gas Operator | Sep 2010 |
| 14 | Josey Oil Company | Houston, TX 77019 | Oil & Gas Operator | Jul 2006 |
| 15 | Journey Operating, L.L.C. | Sugar Land, TX 77496 | Oil & Gas Operator | Aug 2006 |
| 16 | JPW Energy, L.L.C. | San Antonio, TX 78216 | Oil & Gas Operator | Oct 2025 |
| 17 | JTB Oil Company, Inc. | Refugio, TX 78377 | Oil & Gas Operator | Oct 2025 |
| 18 | Jura Energy Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |