| Lopez Mineral Trust G-4-265738 | Paleo Oil Company LLC only | Dinn, Deep (11200) | Duval | 1 | 2 | 30K | Jan 2013 – Oct 2018 |
| Henderson Trust "X" G-9-153237 | Bob Hughes Oil Company, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 2 | 268K | Jan 1995 – Jul 2026 |
| Hein Trust B G-4-289840 | Hilcorp Energy Company only | Bruni Ranch (Wilcox 7250) | Webb | 1 | 2 | 91.5K | Sep 2017 – Aug 2026 |
| Hein Trust G-4-181823 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 2 | 544K | Feb 2001 – Jul 2022 |
| Longfellow G-10-188926 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 734K | Mar 2002 – Aug 2026 |
| Kasal Trust Unit G-13-253681 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 2 | 1.96M | Jan 2010 – Aug 2026 |
| Hein Trust G-4-188006 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 2 | 613K | Jan 2002 – Aug 2026 |
| Poth Family Trust G-5-158520 | Diversified Production LLC only | Pearwood (Cotton Valley Lime) | Leon | 1 | 2 | 75.8M | Feb 1996 – Aug 2026 |
| Thagard, George F., et Al G-10-38814 | Thagard Trust only | Coyanosa (Ellenburger) | Pecos | 1 | 2 | 4.14M | by Jan 1993 – Mar 2004 |
| West Ranch G-10-254693 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 2.18M | Aug 2009 – Apr 2024 |
| Allison 4 G-10-238765 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 1.2M | Jan 2008 – Apr 2024 |
| Hill-Fawcett, Randee Trust "A" G-9-213837 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 2 | 361K | Jul 2005 – Jul 2026 |
| Bruni Mineral Trust AB G-4-139464 | Arete Operating Company, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 1 | 1.52M | by Jan 1993 – Aug 2026 |
| Aldwell, Winnie R. Trust G-9-203313 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 1 | 293K | Oct 2003 – Jul 2026 |
| Huddleston Trust G-13-202974 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 1 | 1.45M | Jun 2004 – Aug 2026 |
| Letulle Est. "B" G-3-172353 | Dominion Expl. & Prod., Inc. only | Rusty (1950) | Matagorda | 1 | 1 | 425K | Sep 1998 – Sep 2003 |
| Hill-Aldwell, W. R. Trust "J" G-9-108969 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 1 | 61K | by Jan 1993 – Jul 2026 |
| Haynes Mineral Trust G-4-234326 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 1 | 295K | Jul 2007 – May 2025 |
| Cole, M. T. Trust G-13-61692 | Tejas Western Corp. only | Gas Finders (Congl.) | Denton | 1 | 1 | 35.9K | by Jan 1993 – May 2011 |
| Bruni Mineral Trust A-B G-4-77960 | Arete Operating Company II, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 1 | 257K | by Jan 1993 – May 2026 |
| Mann Trust - State (EF) G-1-267721 | Caturus Energy, LLC only | Hawkville (Eagleford Shale) | Webb | 1 | 1 | 441K | Jul 2012 – Aug 2026 |
| Stewart Trust State G-1-263542 | EOG Resources, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 1 | 2.48M | May 2011 – Aug 2026 |
| Bruni Mineral Trust G-4-130005 | Killam Oil Co., Ltd. only | Davis, S. (4800) | Zapata | 1 | 1 | 73.7K | Feb 1993 – Oct 2005 |
| Martinez Children Trust Fund G-4-255120 | Beaver Oil & Gas Operating, LLC only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 1 | 595K | Apr 2010 – Aug 2026 |
| Cole Trust "A" G-13-185134 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 1 | 2.36M | Sep 2001 – Aug 2020 |
| Brooks Trust G-2-251222 | Dirks Petroleum Company only | Cadiz (Queen City) | Bee | 1 | 1 | 1.17K | Aug 2010 – Dec 2010 |
| Gastar Wildman Trust G-5-218968 | Gastar Exploration Texas, LP only | Hilltop Resort (Bossier) | Leon | 1 | 1 | 103K | May 2006 – Oct 2008 |
| Mills, J. T. Sr. Trust G-1-124757 | Regency Energy, Inc. only | Homeyer (Basal Olmos) | Zavala | 1 | 1 | 142K | by Jan 1993 – May 2005 |
| Bruni Mineral Trust AB G-4-146526 | Arete Operating Company, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 1 | 2.21M | Sep 1993 – Aug 2026 |
| Longfellow G-10-251356 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1 | 88.4K | Oct 2008 – Apr 2024 |
| West Ranch G-10-241331 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1 | 478K | Jul 2008 – Apr 2024 |
| Hein Trust G-4-187488 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 1 | 328K | Jan 2002 – Aug 2025 |
| Allison G-10-241792 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1 | 237K | Jul 2008 – Jan 2017 |
| Letulle Estate "C" G-3-167561 | Dominion Expl. & Prod., Inc. only | Rusty (2600) | Matagorda | 1 | 1 | 287K | Feb 1998 – Aug 2003 |
| Frost National Bank Trustee G-1-129979 | San Antonio Gas & Oil, Inc. only | Dent Ingram (Olmos 1) | Dimmit | 1 | 1 | 17.4K | by Jan 1993 – Oct 1995 |
| Hays Trust G-14-283978 | Pantera Energy Company only | Panhandle Carson County Field | Carson | 1 | 0 | 5.9K | Feb 2018 – Jul 2023 |
| Huddleston Trust G-13-191431 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 1.04M | Sep 2002 – Aug 2026 |
| Huddleston Trust G-13-189712 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 1.76M | Aug 2002 – Aug 2026 |
| Huddleston Trust G-13-189709 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 1.41M | Jun 2002 – Jun 2025 |
| Allison G-10-240061 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 0 | 268K | May 2008 – Apr 2024 |
| Martin, Albert Mineral Trust G-1-176727 | Proline Energy Resources Inc only | Cooke (Wilcox 4600) | La Salle | 1 | 0 | 3.55K | Jan 2001 – Sep 2002 |
| Mills Trust "19" G-1-203272 | Dawson Energy, LLC only | Pandale (Canyon Sand) | Val Verde | 1 | 0 | 11.2K | Feb 2004 – Aug 2026 |
| Mills Trust "126" G-1-209207 | Dawson Energy, LLC only | Pandale (Canyon Sand) | Val Verde | 1 | 0 | 59.8K | May 2005 – Aug 2026 |
| Smith, Mary Carol Trust G-1-209360 | Protege Energy III LLC only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 0 | 111K | Jun 2005 – Nov 2010 |
| Guerra Mineral Trust "NCT III" G-4-167441 | Texas, Les & Co. only | Guerra, W. (Govt. Wells) | Starr | 1 | 0 | 88.5K | Jan 1998 – Oct 1998 |
| Rowan Estate Trust G-13-183550 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 1.71M | Jun 2001 – Aug 2026 |
| Rowan Estate Trust G-13-182928 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 1.59M | Mar 2001 – Aug 2026 |
| Johnson-Kuehn Trust G-13-173608 | Blackbrush O & G, LLC only | Thalia (Wichita Falls) | Foard | 1 | 0 | 144K | Apr 1999 – Aug 2026 |
| Mays Trust 81 G-14-267529 | Le Norman Operating LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 0 | 0 | — |
| West Ranch G-10-243253 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 0 | 24.3K | Aug 2008 – Aug 2010 |