| Houts G-4-178975 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Mar 2000 – Jul 2026 |
| Cook-Clemons GU G-4-178977 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 1.8M | May 2000 – Jul 2026 |
| Hamman Ranch G-4-180796 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 20.3M | Dec 2000 – Jul 2026 |
| Hamman Ranch G-4-181802 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Oct 2000 – Jul 2026 |
| Hamman Ranch G-4-182219 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 8.83M | Feb 2001 – Jul 2026 |
| Hamman Ranch G-4-183322 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 19.6M | May 2001 – Jul 2026 |
| Cook-Clemons GU G-4-183436 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Jan 2001 – Jul 2026 |
| Cook-Clemons GU G-4-183731 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 5.23M | Apr 2001 – Jul 2026 |
| Cook-Clemons G U G-4-183744 | Cantera Operating, LLC only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Mar 2001 – Dec 2014 |
| Hamman Ranch G-4-183757 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 5.92M | Apr 2001 – May 2012 |
| Cook-Clemens GU G-4-184780 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 3.69M | Jul 2001 – Jan 2009 |
| Hamman Ranch G-4-184781 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Jan 2001 – Jul 2026 |
| Cook-Clemons GU G-4-185342 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 5.38M | Jun 2001 – Jul 2026 |
| Casa del Nylon G-4-185444 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.73M | Jul 2001 – Jul 2026 |
| Hamman Ranch G-4-186386 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 8.72M | Jul 2001 – Jul 2026 |
| Cook-Clemons GU G-4-187054 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.68M | Aug 2001 – May 2008 |
| Johnson, F. I. G-4-188725 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 5.62M | Feb 2002 – Jul 2026 |
| Cook-Clemons GU G-4-189350 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Nov 2001 – Jul 2026 |
| Turner, Evelyn G-4-190533 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Mar 2002 – Jul 2026 |
| Hamman Ranch G-4-190774 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | May 2002 – Jul 2026 |
| Hamman Ranch G-4-191136 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Jan 2002 – Jul 2026 |
| Cook-Clemons GU G-4-191289 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | May 2002 – Jul 2026 |
| Johnson, F. I. G-4-191293 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 7.65M | Jun 2002 – Jul 2026 |
| Stalker Gas Unit G-4-191346 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Jul 2002 – Jul 2026 |
| Hamman Ranch G-4-191509 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Jul 2002 – Jul 2026 |
| Jackson-Chandler Gas Unit G-4-191675 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Aug 2002 – Jul 2026 |
| Johnson, F. I. G-4-191687 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 1.05M | Sep 2002 – Jul 2026 |
| Johnson, F. I. G-4-194244 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.97M | Nov 2002 – Jul 2026 |
| Hamman Ranch G-4-194656 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.86M | Feb 2003 – Jan 2007 |
| Johnson, F. I. G-4-194880 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.69M | Mar 2003 – Jul 2026 |
| Cook-Clemons Gas Unit G-4-195466 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 3.46M | Jun 2003 – Jul 2026 |
| Johnson, F. I. G-4-196967 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 1.59M | Jul 2003 – Jul 2026 |
| Johnson, F. I. G-4-198933 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 4.77M | Dec 2003 – Jul 2026 |
| Johnson, F. I. G-4-204625 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 2.91M | Sep 2004 – Jul 2026 |
| Hamman Ranch G-4-210488 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 0 | Dec 2004 – Jul 2026 |
| Johnson, F. I. G-4-210874 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 0 | 331K | Mar 2005 – Mar 2018 |