| Governor Bill Daniel, Sect 161 O-3-27589 | Rich Ranch (Yegua) | Liberty | 1 | 56.8K | 96.3K | Feb 2019 – Jul 2026 |
| Cook Family Trust G-3-254627 | Cecil Noble (Wilcox 9325) | Colorado | 1 | 0 | 1.15M | Nov 2009 – Jul 2026 |
| Governor Bill Daniel 161 G-3-275496 | Rich Ranch (Yegua) | Liberty | 1 | 0 | 0 | Jan 2013 – Jul 2026 |
| Allar G-3-291099 | B Red (Nodosaria) | Orange | 1 | 0 | 958K | Feb 2021 – Jul 2026 |
| Dunks G-3-294983 | Rankin (Cook Mtn. IV) | Harris | 1 | 0 | 154K | Oct 2022 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-50508 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 11.4M | Jan 1993 – Jul 2026 |
| Rentfro, Russell G-4-55065 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 347K | Jan 1993 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-64569 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 8.58M | Jan 1993 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-74286 | Jeffress (Vicksburg W) | Hidalgo | 1 | 0 | 184K | Jan 1993 – Jul 2026 |
| Rentfro, Russell G-4-143691 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 6.25M | Jan 1993 – Jul 2026 |
| Rentfro, Russell G-4-145368 | Jeffress (Vicksburg 7380) | Hidalgo | 1 | 0 | 5.16K | Apr 1993 – Jul 2026 |
| Wheelock Gas Unit G-4-150170 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 4.67M | Jun 1994 – Jul 2026 |
| Vela-Lopeno Minerals Ltd. G-4-171584 | Wildcat | Zapata | 1 | 0 | 0 | Jan 1999 – Jul 2026 |
| Wheelock Gas Unit G-4-176687 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 175K | Jan 2000 – Jul 2026 |
| Wheelock Gas Unit G-4-176689 | Jeffress (Vicksburg W) | Hidalgo | 1 | 0 | 0 | Feb 2000 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-180442 | Jeffress (Vicksburg T) | Hidalgo | 1 | 0 | 130K | Dec 2000 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-180766 | Jeffress (Vicksburg T) | Hidalgo | 1 | 0 | 3.94M | Nov 2000 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-180767 | Jeffress (Vicksburg S) | Hidalgo | 1 | 0 | 0 | Nov 2000 – Jul 2026 |
| Rentfro, Russell G-4-180774 | Jeffress (Vicksburg T) | Hidalgo | 1 | 0 | 186K | Nov 2000 – Jul 2026 |
| Rentfro, Russell G-4-182713 | Jeffress (Vicksburg S) | Hidalgo | 1 | 0 | 0 | Nov 2000 – Jul 2026 |
| Rentfro, Russell G-4-184150 | Jeffress (Vicksburg T) | Hidalgo | 1 | 0 | 1.18M | Jun 2001 – Jul 2026 |
| Rentfro, Russell G-4-184151 | Jeffress (Vicksburg U) | Hidalgo | 1 | 0 | 0 | Jun 2001 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-187000 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 7.92M | Dec 2001 – Jul 2026 |
| Guerra, Avelino G-4-196032 | Wildcat | Zapata | 1 | 0 | 0 | Jun 2003 – Jul 2026 |
| Wheelock Gas Unit G-4-197878 | Jeffress (Vicksburg U) | Hidalgo | 1 | 0 | 0 | Feb 2003 – Jul 2026 |
| Rentfro, Russell G-4-197895 | Jeffress, N (Vksbg, LO) | Hidalgo | 1 | 0 | 2M | Jun 2003 – Jul 2026 |
| Wheelock Gas Unit G-4-198108 | Jeffress, N (Vksbg, LO) | Hidalgo | 1 | 0 | 0 | Nov 2002 – Jul 2026 |
| Veleno Ranch G-4-201874 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 5.23M | Mar 2004 – Jul 2026 |
| Veleno Ranch G-4-202932 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 4.59M | Jun 2004 – Jul 2026 |
| Veleno Ranch G-4-203851 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 826K | Jul 2004 – Jul 2026 |
| Gonzalez G-4-204108 | Lopeno, NE. (Wilcox 8400) | Zapata | 1 | 0 | 4.03M | Jul 2004 – Jul 2026 |
| Veleno Ranch G-4-205381 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 1.75M | Sep 2004 – Jul 2026 |
| Veleno Ranch G-4-206805 | Wildcat | Zapata | 1 | 0 | 0 | Oct 2004 – Jul 2026 |
| Swantner Gas Unit G-4-207276 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 3.28M | Dec 2004 – Jul 2026 |
| Veleno Ranch G-4-212813 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 2.96M | Aug 2005 – Jul 2026 |
| Swantner Gas Unit G-4-213830 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 1.64M | Sep 2005 – Jul 2026 |
| Russell Rentfro G-4-224306 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 8.69M | Nov 2006 – Jul 2026 |
| Veleno Ranch G-4-224693 | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 440K | Sep 2006 – Jul 2026 |
| Wheelock Gas Unit G-4-230399 | Jeffress (Vicksburg W) | Hidalgo | 1 | 0 | 6.03M | Aug 2007 – Jul 2026 |
| Wheelock Gas Unit G-4-231307 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 0 | Sep 2007 – Jul 2026 |
| Russell Rentfro G-4-232153 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 4.63M | Oct 2007 – Jul 2026 |
| Russell Rentfro G-4-234495 | Jeffress (Vicksburg U) | Hidalgo | 1 | 0 | 467K | Jul 2007 – Jul 2026 |
| Russell Rentfro G-4-236917 | Jeffress (Vicksburg W) | Hidalgo | 1 | 0 | 0 | Nov 2006 – Jul 2026 |
| Wheelock Gas Unit G-4-243584 | Jeffress (Vicksburg W) | Hidalgo | 1 | 0 | 4.67M | Jun 2008 – Jul 2026 |
| Wheelock Gas Unit G-4-243587 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 0 | Jun 2008 – Jul 2026 |
| Russell Rentfro G-4-248356 | Jeffress (Vicksburg V) | Hidalgo | 1 | 0 | 810K | Mar 2009 – Jul 2026 |
| Wheelock Gas Unit O/A G-4-249058 | Jeffress (Vicksburg S) | Hidalgo | 1 | 0 | 10.5K | Apr 2009 – Jul 2026 |
| Benavides Mineral Trusts G-4-294552 | Lopeno, SW (Wilcox 7380) | Zapata | 1 | 0 | 0 | Nov 2022 – Jul 2026 |
| Gonzalez Benavides G-4-301471 | Falcon Lake, E. | Zapata | 1 | 0 | 609K | Apr 2022 – Jul 2026 |
| Swickheimer O-2-12312 | Alkek, West (Frio 3320) | Goliad | 1 | 0 | 0 | Mar 2021 – Jul 2026 |