| Walker, Ida O-4-13496 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 3 | 113K | 15.8K | Nov 2008 – Feb 2026 |
| Estell, Mary King O-4-13498 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 26 | 49.3K | 50.9K | Aug 2009 – Mar 2023 |
| Graham Cattle Co. G-4-226890 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 3.61K | 784K | Mar 2007 – Feb 2026 |
| Estell, Mary King G-4-233340 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 1.8K | 271K | Oct 2007 – Feb 2026 |
| Graham Cattle Co. G-4-248415 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 1.76K | 706K | May 2009 – Feb 2026 |
| Graham Cattle Co. G-4-243899 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 1.46K | 275K | Oct 2008 – Dec 2025 |
| Reed & Hankamer "A" G-4-143679 | Bridwell Oil Co. only | Richard King (Frio Cons.) | Jim Wells | 1 | 1.1K | 424K | Jan 1993 – Mar 2017 |
| Estell, Mary King G-4-151383 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 900 | 489K | Oct 1994 – Feb 2026 |
| King, Richard G-4-180509 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 325 | 49.9K | Jan 2001 – Aug 2009 |
| King, Richard G-4-252938 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 174 | 9.23K | Mar 2007 – May 2007 |
| Orange Grove Farms O-4-14072 | Cimarron Engineering, LLC only | Richard King (Frio Cons.) | Nueces | 1 | 166 | 0 | Nov 2017 – Nov 2017 |
| King, Richard G-4-179283 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 65 | 421K | Sep 2000 – Feb 2026 |
| Graham Cattle Co. G-4-252024 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 1 | 133K | Sep 2009 – Mar 2024 |
| Estell, Mary King G-4-145591 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 13.2K | Aug 2009 – Apr 2015 |
| Estell, Mary King G-4-145592 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 441 | Aug 2009 – Dec 2021 |
| Estell, Mary King G-4-149154 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 6.44K | Aug 2009 – Apr 2015 |
| Estell, Mary King G-4-151069 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 413 | Aug 2009 – Feb 2010 |
| Estell, Mary King G-4-154788 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 477 | Oct 2021 – Dec 2021 |
| Estell, Mary King G-4-154789 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-156881 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 573K | Jan 1996 – Apr 2020 |
| Estell, Mary King G-4-165285 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 41.9K | Oct 1997 – Apr 2015 |
| Estell, Mary King G-4-167009 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 7.64K | Feb 2005 – Oct 2008 |
| Estell, Mary King G-4-167010 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 6.97K | Aug 2009 – Apr 2015 |
| Estell, Mary King G-4-235504 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 351K | Feb 2008 – Feb 2026 |
| Estell, Mary King G-4-244516 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 64.6K | Nov 2008 – Feb 2026 |
| Estell, Mary King G-4-246932 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 80.1K | Sep 2008 – Feb 2026 |
| Estell, Mary King G-4-249361 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 125K | Mar 2009 – Feb 2026 |
| Estell, Mary King G-4-252017 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 167K | Jul 2009 – Feb 2026 |
| Estell, Mary King G-4-253813 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 5.34K | Aug 2009 – Dec 2021 |
| Estell, Mary King G-4-253817 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 11.1K | Aug 2009 – Mar 2015 |
| Estell, Mary King G-4-253828 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 3.05K | Aug 2009 – Apr 2015 |
| Estell, Mary King G-4-12898 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 127K | Dec 1993 – Apr 2015 |
| Estell, Mary King G-4-265457 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 1.7K | Feb 2012 – Feb 2026 |
| Estell, Mary King G-4-270497 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 247K | Jun 2013 – Feb 2026 |
| King, Richard O-4-13497 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 2 | 0 | 0 | — |
| Estell, Mary King G-4-253833 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 5.07K | Aug 2009 – Dec 2020 |
| Estell, Mary King G-4-12899 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-12903 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 119K | Jan 1993 – Feb 2026 |
| Estell, Mary King G-4-39367 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 66K | Aug 2009 – Dec 2021 |
| Estell, Mary King G-4-45201 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 276 | Aug 2009 – Jan 2012 |
| Estell, Mary King G-4-53658 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-64193 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 12K | Jun 2004 – Jun 2015 |
| Walker, Ida G-4-79106 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-118680 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 47.2K | Jan 1993 – Dec 1995 |
| Estell, Mary King G-4-131339 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 9.81K | Dec 1993 – Aug 2015 |
| Estell, Mary King G-4-137650 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-143583 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 0 | — |
| Estell, Mary King G-4-145009 | Durango Resources Corp. only | Richard King (Frio Cons.) | Nueces | 1 | 0 | 463K | Mar 1993 – Feb 2026 |