| Martin, Albert, Trustee O-4-7822 | Wallis Energy, Inc. only | Bruni, SE. (4000) | Webb | 1 | 88.4K | 29.9K | by Jan 1993 – Jan 2026 |
| Martin, Albert, Trustee O-4-7768 | Wallis Energy, Inc. only | Bruni, SE. (Queen City) | Webb | 4 | 78.2K | 49.4K | by Jan 1993 – Jun 2026 |
| Bruni Mineral Trust O-4-13177 | Hilcorp Energy Company only | Brazil Pasture(wilcox Second) | Webb | 1 | 60.3K | 550K | Oct 2001 – Jun 2026 |
| C-Bruni Mineral Trust G-4-137342 | Chevron U. S. A. Inc. only | Bashara-Hereford (7300) | Webb | 1 | 45.6K | 5.44M | by Jan 1993 – Mar 2011 |
| Frost Trust 49 G-4-188049 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 44.5K | 2.76M | Jan 2002 – Aug 2026 |
| C-Bruni Mineral Trust G-4-135182 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 43.9K | 7.41M | by Jan 1993 – Aug 2026 |
| Bruni Minerals Trust "a" Gas Ut. G-4-174745 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 42.8K | 3.08M | Oct 1999 – Aug 2026 |
| James Trust G-1-279007 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 41.4K | 4.85M | Jun 2015 – Aug 2026 |
| Frost Trust 49 G-4-191043 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 39.3K | 2.18M | Jul 2002 – Aug 2026 |
| C-Bruni Mineral Trust G-4-146852 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 38.9K | 5.08M | Oct 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-152405 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38.3K | 5.63M | Oct 1994 – Aug 2026 |
| C-Bruni Mineral Trust G-4-158139 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38K | 4.68M | Mar 1996 – Aug 2026 |
| C- Bruni Mineral Trust G-4-141443 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38K | 6.3M | by Jan 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-143478 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 37.9K | 4.22M | by Jan 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-154452 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 34.9K | 4.29M | May 1995 – Jun 2013 |
| C-Bruni Mineral Trust G-4-147608 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 34.6K | 4.28M | Dec 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-147241 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 33K | 2.38M | Nov 1993 – Aug 2026 |
| James Trust G-1-279005 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 31.9K | 4.18M | Jun 2015 – Aug 2026 |
| James Trust G-1-279148 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 31K | 3.74M | Jun 2015 – Aug 2026 |
| C-Bruni Mineral Trust G-4-158097 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 30.1K | 3.97M | Mar 1996 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-247401 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 29.4K | 3.96M | Aug 2008 – Aug 2026 |
| James Trust G-1-279209 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 24.9K | 3.84M | Jun 2015 – Aug 2026 |
| James Trust G-1-279013 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 24.5K | 3.94M | Jun 2015 – Aug 2026 |
| Bruni Mineral Trust G-4-153714 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 24.4K | 4.67M | Apr 1995 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-180562 | Killam Oil Co., Ltd. only | Moritas Creek (8500) | Webb | 1 | 24K | 3.64M | Nov 2000 – Apr 2022 |
| Bruni Mineral Trust "B" G-4-248708 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 23.8K | 3.4M | Mar 2009 – Aug 2026 |
| James Trust G-1-279004 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 23.8K | 4.12M | Jun 2015 – Aug 2026 |
| Bruni Mineral Trust G-4-183083 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 22.2K | 2.69M | May 2001 – Aug 2026 |
| C-Bruni Mineral Trust G-4-147615 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 22.1K | 7.67M | Nov 1993 – Aug 2026 |
| James Trust G-1-279208 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 21K | 3.51M | Jun 2015 – Aug 2026 |
| Bruni Mineral Trust G-4-153506 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 19.6K | 1.25M | Mar 1995 – Aug 2026 |
| James Trust G-1-279457 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 19K | 4.64M | Jul 2015 – Aug 2026 |
| James Trust G-1-279454 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 18.4K | 4.65M | Jul 2015 – Aug 2026 |
| James Trust G-1-279012 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 18.2K | 3.38M | Jun 2015 – Aug 2026 |
| C-Bruni Mineral Trust G-4-151285 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 18.2K | 1.76M | Sep 1994 – Aug 2026 |
| James Trust G-1-279296 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.7K | 4.15M | Jun 2015 – Aug 2026 |
| James Trust G-1-287462 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.6K | 7.2M | Jul 2019 – Aug 2026 |
| Bruni Mineral Trust North TR "A" G-4-170306 | Lakeshore Operating, LLC only | Valley (Navarro) | Webb | 1 | 17.1K | 9.61M | Dec 1998 – Jun 2022 |
| James Trust G-1-279242 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 15.9K | 4.27M | Jun 2015 – Aug 2026 |
| Frost Trust 13 G-4-183946 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 15.9K | 2.36M | Jun 2001 – Aug 2026 |
| James Trust G-1-287443 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 15.3K | 5.11M | Jul 2019 – Aug 2026 |
| C-Bruni Mineral Trust G-4-65882 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 14.7K | 3M | by Jan 1993 – Aug 2026 |
| Bruni Mineral Trust G-4-153505 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 14.3K | 4.64M | Feb 1995 – Aug 2026 |
| Bruni Mineral Trust G-4-157551 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 13.2K | 4.4M | Mar 1996 – Aug 2026 |
| James Trust G-1-279455 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 13.1K | 3.85M | Jul 2015 – Aug 2026 |
| Frost Trust 29 G-4-187600 | EOG Resources, Inc. only | Tiffany (Wilcox Carrizo) | Webb | 1 | 12.8K | 746K | Feb 2002 – Jan 2010 |
| Bruni Mineral Trust "B" G-4-197250 | Hilcorp Energy Company only | Hubberd (Lobo) | Webb | 1 | 12.3K | 4.25M | Jul 2003 – Aug 2026 |
| Dinn Mineral Trusts, The O-4-12055 | Hilcorp Energy Company only | Guerra (3800) | Webb | 1 | 12.3K | 17 | by Jan 1993 – Oct 1996 |
| C-Bruni Mineral Trust G-4-65462 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 11.8K | 2.27M | by Jan 1993 – Aug 2026 |
| James Trust G-1-287461 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 11.8K | 3.46M | Jul 2019 – Aug 2026 |