| Coates "B" G-4-161782 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 182K | 31.2M | Sep 1996 – Feb 2022 |
| Coates "F" Gas Unit G-4-160055 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 166K | 26.3M | Mar 1996 – Apr 2026 |
| Coates "E" Gas Unit G-4-156565 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 102K | 12M | Nov 1995 – Apr 2026 |
| Coates "F" Gas Unit G-4-159494 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 96.3K | 11.3M | May 1996 – Apr 2026 |
| Boren GU G-4-162156 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 76.6K | 12.7M | Oct 1996 – Jul 2025 |
| Machac Gas Unit G-4-172321 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 60.4K | 4.03M | Jan 1999 – Apr 2026 |
| Boren GU G-4-161790 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 55.5K | 6.38M | Sep 1996 – Apr 2002 |
| Boren GU G-4-162772 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 41K | 6.56M | Dec 1996 – Apr 2026 |
| Adame GU G-4-160502 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 40.7K | 3.82M | Jul 1996 – Mar 2026 |
| Coates "F" GU G-4-167597 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 40.1K | 5.17M | Nov 1997 – Apr 2026 |
| Adame GU G-4-164897 | El Paso E & P Company, L. P. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 35.1K | 3.45M | Jun 1997 – May 2005 |
| Coates "F" Gas Unit G-4-163958 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 34.5K | 5.98M | Apr 1997 – Apr 2026 |
| Coates "E" Gas Unit G-4-176103 | El Paso E & P Company, L. P. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 27.9K | 10.4M | Oct 1999 – Dec 2010 |
| Coates "E" G-4-162584 | El Paso E & P Company, L. P. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 24K | 2.31M | Nov 1996 – Aug 1998 |
| Coates "E" Gas Unit G-4-175977 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 18.1K | 1.69M | Sep 1999 – Apr 2026 |
| Looney, M. M. G-4-165893 | Greenbrier Oper. Co. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 16.4K | 2.04M | Jun 1997 – Jul 1999 |
| Castillo Deep Gas Unit G-4-164146 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 15.4K | 1.52M | May 1997 – Dec 2002 |
| Machac Gas Unit G-4-170232 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 14.6K | 1.53M | May 1998 – Apr 2026 |
| Boren GU G-4-162841 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 7.16K | 776K | Dec 1996 – Mar 2002 |
| Boyt G-4-165236 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 4.82K | 824K | Jun 1997 – Apr 2026 |
| Dube Gas Unit G-4-170510 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 3.39K | 1.32M | Jun 1998 – Apr 2026 |
| Sherwood, M. G-4-159346 | El Paso Production Oil & Gas Co. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 3.39K | 392K | May 1996 – Jun 1999 |
| Dube Gas Unit G-4-170470 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 3.15K | 1.08M | Apr 1998 – Apr 2024 |
| Frank Machac Gas Unit G-4-175173 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 2.07K | 506K | Sep 1999 – Apr 2026 |
| Castillo Deep Gas Unit G-4-170210 | El Paso Production Oil & Gas Co. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 1.87K | 174K | Jul 1998 – Jun 1999 |
| Leonard GU G-4-171550 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 1.18K | 825K | Aug 1998 – Apr 2026 |
| Castillo Deep Gas Unit G-4-161583 | EP Energy E&P Company, L.P. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 372 | 152K | Aug 1996 – Mar 1998 |
| Coates "F" Gas Unit G-4-190274 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 351 | 128K | Jul 2002 – Jul 2002 |
| Coastal Fee 75 G-4-180799 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 0 | 0 | — |
| Coastal Fee 75 G-4-170658 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 0 | 0 | — |
| Coates "E" Unit G-4-163178 | El Paso Production Oil & Gas Co. only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 0 | 0 | — |
| Castillo Deep GU G-4-178104 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 0 | 0 | — |