| Hamman "E" G-4-236278 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 10.5K | 2.23M | Feb 2008 – Apr 2026 |
| Bentsen G-4-226871 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 10.1K | 2.23M | Mar 2007 – Apr 2026 |
| Hamman G-4-225808 | Cantera Operating, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 7.9K | 2.15M | Dec 2006 – Dec 2016 |
| Miller, Bob G-4-249085 | Atlas Operating LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 7.69K | 1.24M | Nov 2009 – Mar 2026 |
| Bentsen Gas Unit G-4-233050 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 6.48K | 1.63M | Oct 2007 – Mar 2026 |
| Hamman "A" G-4-119492 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 6.38K | 2.5M | Jan 1993 – Feb 2024 |
| Bentsen Gas Unit G-4-232011 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 6.15K | 1.45M | Sep 2007 – Apr 2026 |
| Hamman G-4-226770 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 5.38K | 1.39M | Apr 2007 – Nov 2017 |
| Jackson, Kathryn G-4-228276 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 5.37K | 1.51M | Jun 2007 – Apr 2026 |
| No. 1 Atlantic Hamman Gas Unit G-4-108083 | Faulconer, Vernon E., Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 5.15K | 938K | Jan 1993 – May 2012 |
| Hamman G-4-235206 | Cantera Operating, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 5.01K | 1.51M | Jan 2008 – Jan 2016 |
| Hamman G-4-230902 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 4.89K | 1.67M | Feb 2007 – Apr 2026 |
| Hamman, John B G-4-142900 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 4.86K | 586K | Jan 1993 – Sep 2025 |
| Hamman "A" G-4-146252 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 4.41K | 1.81M | Jul 1993 – Feb 2024 |
| Miller, Bob G-4-256219 | Atlas Operating LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 4.08K | 1.01M | Apr 2010 – Mar 2026 |
| Hamman G-4-231241 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 3.81K | 1.47M | Sep 2007 – Apr 2026 |
| Holly Tracy Gas Unit G-4-227523 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 3.38K | 473K | May 2007 – Jan 2026 |
| Hamman A G-4-190027 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 3.27K | 3.61M | Jul 2002 – Apr 2026 |
| Holly Tracy G-4-228365 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 3.02K | 492K | Apr 2007 – Apr 2026 |
| Hamman "A" G-4-184699 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 2.51K | 912K | Aug 2001 – Oct 2021 |
| Hamman A G-4-195180 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 2.38K | 1.92M | Apr 2003 – Apr 2026 |
| Hamman A G-4-192930 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 2.35K | 3.5M | Dec 2002 – Apr 2026 |
| Hamman, John "B" G-4-132495 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 2.07K | 817K | Jan 1993 – Mar 2017 |
| Hamman, John "B" G-4-153750 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.94K | 699K | Mar 1995 – Aug 2025 |
| Hamman 'E' G-4-237097 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.88K | 710K | Mar 2008 – Apr 2026 |
| Hamman A G-4-195100 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.83K | 1.8M | Mar 2003 – Apr 2026 |
| Miller, Bob G-4-255450 | Atlas Operating LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.59K | 343K | Jan 2010 – Mar 2026 |
| Hamman, John "B" G-4-132460 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.52K | 844K | Jan 1993 – Nov 2017 |
| Hamman 'E' G-4-238156 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 1.05K | 986K | Apr 2008 – Mar 2026 |
| Hamman "E" G-4-236748 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 973 | 877K | Feb 2008 – Sep 2017 |
| Hamman, John "B" G-4-127457 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 492 | 327K | Jan 1993 – Nov 2012 |
| Hamman "E" G-4-243485 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 451 | 260K | Oct 2008 – Mar 2026 |
| Bentsen, L. G-4-121744 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 436 | 416K | Jan 1993 – Jul 2005 |
| Hamman, John -B- G-4-130983 | Newfield Exploration Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 436 | 489K | Jan 1993 – Sep 2007 |
| Hamman "D" G-4-117292 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 386 | 685K | Jan 1993 – Oct 2021 |
| Hamman "A" G-4-125172 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 271 | 1.23M | Jan 1993 – Feb 2024 |
| Hamman Unit "A" G-4-139916 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 244 | 183K | Jan 1993 – Nov 2009 |
| Hamman, John "B" G-4-147166 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 221 | 212K | Oct 1993 – Sep 2002 |
| Hamman, John "B" G-4-189674 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 110 | 1.66K | Jun 2002 – Oct 2003 |
| Hamman 'D' G-4-183833 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 62 | 442K | Jul 2001 – Feb 2024 |
| Turner, Evelyn G-4-287900 | Merit Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 24 | 6.59K | Aug 2019 – Dec 2019 |
| Hamman "D" G-4-125174 | Faulconer Energy, LLC only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 13 | 454K | Jan 1993 – Feb 2024 |
| Hamman Unit "A" G-4-169902 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 12 | 62K | Oct 1998 – Oct 2008 |
| Hamman, John "B" G-4-131564 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 80.5K | Jan 1993 – Jan 1999 |
| Bentsen, "A" G-4-125664 | Newfield Exploration Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 47K | Jan 1993 – Oct 2002 |
| Hamman, John "B" G-4-148602 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 281K | Mar 1994 – Jul 1999 |
| Hamman, John "B" G-4-150831 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 0 | — |
| Hamman, John "B" G-4-122091 | Hilcorp Energy Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 14.6K | Aug 1993 – Oct 1995 |
| Hamman, John "B" G-4-155256 | Mobil Producing TX. & N.M. Inc. only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 0 | — |
| Hamman, John "B" G-4-119621 | Newfield Exploration Company only | Monte Christo (Frio Cons.) | Hidalgo | 1 | 0 | 32.2K | Jan 1993 – Mar 1995 |