| K & H Fee "2042" G-4-149905 | B.M.T. (Lobo Cons.) | Webb | 1 | 47.3K | 5.09M | May 1994 – Apr 2026 |
| Bruni Minerals Trust "a" Gas Ut. G-4-174745 | B.M.T. (Lobo Cons.) | Webb | 1 | 42.6K | 3.07M | Oct 1999 – Apr 2026 |
| K&H Fee 'a' 1569 G-4-258945 | B.M.T. (Lobo Cons.) | Webb | 1 | 37.4K | 3.13M | Aug 2006 – Apr 2026 |
| Killam and Hurd Fee 1504 G-4-256351 | Valley (Navarro) | Webb | 1 | 30.9K | 8.64M | May 2010 – Apr 2026 |
| K&H Fee 'a' 1569 G-4-152002 | Presa de Oro (Lobo No. 6) | Webb | 1 | 30K | 3.3M | Nov 1994 – Apr 2026 |
| Kincaid, J. W. Gas Unit G-4-188040 | Lyda (Vicksburg Lower) | Starr | 1 | 29.7K | 2.05M | Dec 2001 – Apr 2026 |
| Hirsch Estate J G-4-142875 | B.M.T. (Lobo Cons.) | Webb | 1 | 28.9K | 1.81M | Jan 1993 – Apr 2026 |
| Killam & Hurd Fee "1690" G-4-162636 | B.M.T. (Lobo Cons.) | Webb | 1 | 28.8K | 2.25M | Mar 1997 – Apr 2026 |
| Killam & Hurd Fee 1614 G-4-243701 | B.M.T. (Lobo Cons.) | Webb | 1 | 26.6K | 862K | Oct 2008 – Apr 2026 |
| Killam-Hurd-Amoco G-4-104940 | Casa Verde (Hirsch Lower) | Webb | 1 | 26.1K | 7.21M | Jan 1993 – Apr 2026 |
| K&H Fee 942 G-4-231998 | B.M.T. (Lobo Cons.) | Webb | 1 | 25.6K | 1.24M | Oct 2007 – Apr 2026 |
| Summers, Bruni G-4-178208 | Moritas Creek (8500) | Webb | 1 | 25.1K | 3.08M | Jun 2000 – Apr 2026 |
| Killam & Hurd Fee "1614" G-4-168195 | B.M.T. (Lobo Cons.) | Webb | 1 | 24.9K | 1.87M | Mar 1998 – Apr 2026 |
| Killam-Hurd-Amoco G-4-140737 | Casa Verde (Hirsch Lower) | Webb | 1 | 24.5K | 7.41M | Jan 1993 – Apr 2026 |
| Bruni Summers G-4-188698 | Moritas Creek (8500) | Webb | 1 | 24.1K | 3.69M | Feb 2002 – Apr 2026 |
| Killam-Hurd-Amoco Range G-4-98916 | Casa Verde (Hirsch Lower) | Webb | 1 | 23.8K | 7.07M | Jan 1993 – Apr 2026 |
| K&H Fee 'D' 1570 G-4-155803 | Presa de Oro (Lobo No. 6) | Webb | 1 | 23.4K | 4.21M | Sep 1995 – Apr 2026 |
| Killam and Hurd Fee 2005 G-4-290467 | Umbrella, North (Lobo Cons.) | Webb | 1 | 22.4K | 2.06M | Feb 2021 – Apr 2026 |
| McGrath G-4-182944 | Zwebb (10350) | Webb | 1 | 22K | 7.01M | Apr 2001 – Apr 2026 |
| Killam, R. "1860" G-4-158585 | Benavides (Lobo Cons.) | Webb | 1 | 21.8K | 1.53M | May 1996 – Apr 2026 |
| Ortiz Ranch 'D' G-4-283409 | Umbrella, North (Lobo Cons.) | Webb | 1 | 21.8K | 1.18M | Feb 2018 – Apr 2026 |
| Killam Mineral Fee "601" G-4-152575 | Villegas (Middle Wilcox 7950) | Webb | 1 | 21.4K | 3.43M | Dec 1994 – Apr 2026 |
| Laurel, D. G-4-209781 | Sun, North (Vicksburg 5960) | Starr | 1 | 21.2K | 1.51M | Apr 2005 – Apr 2026 |
| Slaughter, Lilia Bruni G-4-175423 | Moritas Creek (8500) | Webb | 1 | 20.9K | 2.27M | Sep 1999 – Apr 2026 |
| Pescadito State 1176 G-4-245761 | Umbrella, North (Lobo Cons.) | Webb | 1 | 20.2K | 1.95M | Feb 2009 – Apr 2026 |
| Killam-Hurd-Amoco G-4-103036 | Casa Verde (Hirsch Lower) | Webb | 1 | 17.8K | 6.34M | Jan 1993 – Apr 2026 |
| Killam-Hurd-Amoco G-4-103352 | Casa Verde (Hirsch Lower) | Webb | 1 | 17.3K | 3.72M | Jan 1993 – Apr 2026 |
| Bruni Mineral "A" G-4-173766 | B.M.T. (Lobo Cons.) | Webb | 1 | 16.5K | 1.17M | Jun 1999 – Apr 2026 |
| Killam & Hurd Fee 1614 G-4-199698 | B.M.T. (Lobo Cons.) | Webb | 1 | 16.5K | 1.05M | May 2003 – Apr 2026 |
| Bruni Summers G-4-179106 | Rottersman (8500) | Webb | 1 | 15.6K | 1.73M | Sep 2000 – Apr 2026 |
| Speer, Geo. H. State -D- G-4-269344 | Lyda (Vicksburg Lower) | Starr | 1 | 15.4K | 798K | Oct 2012 – Apr 2026 |
| Summers, Bruni G-4-180437 | Moritas Creek (8500) | Webb | 1 | 14.8K | 1.63M | Dec 2000 – Apr 2026 |
| Hall, J. F. State G-4-70638 | Rincon, North (Vicksburg 8200) | Starr | 1 | 14.8K | 2.54M | Jan 1993 – Apr 2026 |
| Killam, R. "1860" G-4-159779 | Benavides (Lobo Cons.) | Webb | 1 | 14.2K | 1.01M | Jul 1996 – Apr 2026 |
| Killam & Hurd Fee 1690 G-4-236643 | B.M.T. (Lobo Cons.) | Webb | 1 | 14K | 1.17M | Mar 2008 – Apr 2026 |
| Geo. H. Speer G-4-283840 | Lyda (Vicksburg Lower) | Starr | 1 | 13.9K | 2.17M | Mar 2018 – Apr 2026 |
| Bruni Mineral A G-4-141845 | B.M.T. (Lobo Cons.) | Webb | 1 | 13.7K | 1.48M | Jan 1993 – Apr 2026 |
| Hall, C. M. -C- G-4-266027 | Lyda (Vicksburg Lower) | Starr | 1 | 13.3K | 747K | May 2012 – Apr 2026 |
| Bruni Mineral -A- G-4-84900 | Juanita (Lobo) | Webb | 1 | 13.3K | 2.6M | Jan 1993 – Apr 2026 |
| Olivares, A. G-4-271689 | Lyda (Vicksburg Lower) | Starr | 1 | 13.2K | 3.33M | Oct 2013 – Apr 2026 |
| Puig "C" G-4-262999 | Davis (Hinnant 1ST, North) | Webb | 1 | 13.1K | 1.02M | Jun 2011 – Apr 2026 |
| K & H Fee "2042" G-4-166438 | B.M.T. (Lobo Cons.) | Webb | 1 | 13.1K | 2.13M | Dec 1997 – Apr 2026 |
| Killam-Hurd-Amoco G-4-125272 | Casa Verde (Hirsch Lower) | Webb | 1 | 12.4K | 2.93M | Jan 1993 – Apr 2026 |
| McGrath G-4-186023 | Zwebb (10350) | Webb | 1 | 11.9K | 2.83M | Oct 2001 – Apr 2026 |
| Killam & Hurd "1612" G-4-164366 | B.M.T. (Lobo Cons.) | Webb | 1 | 11.3K | 2.8M | Jul 1997 – Apr 2026 |
| Killam & Hurd Fee 1195 G-4-262740 | Umbrella, North (Lobo Cons.) | Webb | 1 | 11.1K | 2.2M | Aug 2011 – Apr 2026 |
| Speer, Geo. H. G-4-269988 | Lyda (Vicksburg Lower) | Starr | 1 | 10.8K | 1.86M | Apr 2013 – Apr 2026 |
| Speer, Geo. H. State -D- G-4-269075 | Lyda (Vicksburg Lower) | Starr | 1 | 10.6K | 1.36M | Oct 2012 – Apr 2026 |
| Hall, J. F. State -A- G-4-188045 | Lyda (Vicksburg Lower) | Starr | 1 | 10.3K | 1.39M | Mar 2002 – Apr 2026 |
| Garza - Montalvo Gas Unit G-4-130461 | Sun, North (Garza) | Starr | 1 | 10K | 1.26M | Jan 1993 – Apr 2026 |