| Finch Family Trust GU G-3-280753 | Hilcorp Energy Company only | Ora (13400 Sand) | Chambers | 1 | 18.5K | 107K | Feb 2016 – Nov 2017 |
| Boston Texas Land & Trust G-4-267196 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.5K | 1.47M | Apr 2012 – Aug 2026 |
| Kincaid, A. R. Trust G-9-91264 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 18.5K | 770K | by Jan 1993 – 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 |
| Nelson Trust G-3-142921 | Greenhill Petroleum Corporation only | Numbat (LY-6 Cook Mountain) | Liberty | 1 | 18.1K | 72K | by Jan 1993 – Dec 1994 |
| JBG Childrens 1991 Trust C G-3-190938 | Lone Wolf Operating Company only | Brookshire Dome (Miocene 5-1C) | Waller | 1 | 18.1K | 26.5K | Jul 2002 – Jan 2003 |
| Colter Trust G-9-183340 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 17.9K | 230K | May 2001 – Dec 2023 |
| Smith, Mary Carol Trust G-1-193 | Verdun Oil & Gas LLC only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 17.9K | 1.94M | by Jan 1993 – Jan 2016 |
| James Trust G-1-279296 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.7K | 4.15M | Jun 2015 – Aug 2026 |
| Garza Zamora Energy Trust G-4-222722 | Merit Energy Company only | Flores (Vicksburg, Lower) | Hidalgo | 1 | 17.7K | 1.17M | Jul 2006 – 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 |
| Henderson Trust "NN" G-9-143882 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 17.5K | 1.27M | by Jan 1993 – Aug 2026 |
| Vera Trust G-4-231273 | Eliteenergyholdings LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 17.5K | 631K | Sep 2007 – Feb 2025 |
| Henderson Trust "NN" G-9-160699 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 17.5K | 597K | Oct 1996 – Aug 2026 |
| Talbutt Trust G-1-291188 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 17.4K | 123K | Jan 2019 – Sep 2024 |
| Bracken Grandchildren Trust G-6-244392 | Valence Operating Company only | Noonday (Travis Peak) | Smith | 1 | 17.3K | 913K | Jun 2008 – 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 |
| Boston Texas Land & Trust G-4-202990 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 16.9K | 615K | May 2004 – Jul 2016 |
| Mitchell 31 G-9-159002 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 16.8K | 1.44M | May 1996 – Aug 2026 |
| Legacy Trust G-2-283279 | Hydrocarbon Operating, Inc. only | Speaks, SW. (Wilcox -A-) | Lavaca | 1 | 16.8K | 715K | Jul 2017 – May 2026 |
| Myers Family Trust G-13-237396 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 16.5K | 812K | Dec 2007 – Aug 2026 |
| Martin Trust G-14-236009 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 16.5K | 953K | Nov 2007 – May 2023 |
| Jones Trust 343 G-14-216312 | Presidio Petroleum LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 16.3K | 199K | Feb 2006 – Aug 2026 |
| Kincaid, A. R. Trust -D- G-9-136853 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 16.3K | 1.01M | by Jan 1993 – Aug 2026 |
| Mitchell G.K. G-9-58392 | Nitro Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 16.3K | 3.54M | by Jan 1993 – Dec 2025 |
| Coates Energy Trust Gas Unit #1 G-4-176936 | Hughes, Dan A. Company, L.P. only | Jeffress (Vicksburg S) | Hidalgo | 1 | 16.1K | 2.94M | Mar 2000 – Aug 2008 |
| Boston Texas Land & Trust G-4-204585 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 16.1K | 711K | Aug 2004 – Aug 2026 |
| Mitchell 11 G-9-161954 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 16K | 1.89M | Sep 1996 – Aug 2026 |
| James Trust G-1-279242 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 15.9K | 4.27M | Jun 2015 – Aug 2026 |
| Mitchell 6 G-9-189182 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 15.9K | 1.16M | May 2002 – Aug 2026 |
| Sealy Smith "B" G-8-207032 | Pony Express Corporate Trust only | Emily (Ellenburger) | Coleman | 1 | 15.9K | 63.2K | Feb 2005 – Mar 2022 |
| Frost Trust 13 G-4-183946 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 15.9K | 2.36M | Jun 2001 – Aug 2026 |
| Cole Trust Stony G-13-184924 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 15.9K | 680K | Oct 2001 – Jun 2021 |
| Boston Texas Land & Trust G-4-226488 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 15.8K | 1.12M | Feb 2007 – Aug 2026 |
| Wilson Family Trust G-3-176900 | Howard Exploration, Inc. only | Hillje (Frio 5998) | Wharton | 1 | 15.6K | 1.64M | Apr 2000 – Oct 2016 |
| Martin Trust B3072 G-14-144160 | United Oil & Shale LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 15.5K | 344K | by Jan 1993 – Jul 2011 |
| Boston Texas Land & Trust G-4-159248 | Shell Western E&P only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 15.5K | 420K | May 1996 – Aug 2003 |
| Kincaid, A. R. Trust 'D' G-9-144124 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 15.4K | 1.58M | by Jan 1993 – Aug 2026 |
| Cook Family Trust G-3-192481 | Alamo Operating Company, L. C. only | Cecil Noble (Wilcox 10,300) | Colorado | 1 | 15.4K | 430K | Nov 2001 – Oct 2008 |
| Flowers Trust "A" G-14-253239 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 15.4K | 779K | Aug 2009 – Aug 2026 |
| Flowers Trust G-14-247756 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 15.3K | 860K | Jan 2009 – 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 |
| Smith, Mary Carol Trust G-1-109470 | Verdun Oil & Gas LLC only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 15.3K | 1.73M | by Jan 1993 – Jul 2026 |
| Flowers Trust G-14-191543 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 15.1K | 826K | Sep 2002 – Aug 2026 |
| Flowers Trust "B" G-14-227885 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 15.1K | 695K | Mar 2007 – Aug 2026 |
| Cole Trust Stony G-13-189108 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 15.1K | 971K | May 2002 – Aug 2026 |
| Guaranty Title & Trust "A" G-4-10061 | Pine Island Operating, L.L.C. only | Corpus Christi, W. ( 9800 Frio) | Nueces | 1 | 15K | 429K | Apr 1993 – 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 |