| Boston Texas Land & Trust G-4-272978 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 29.6K | 2.91M | May 2014 – Aug 2026 |
| Brown-Trusts Unit 4 G-1-273595 | BPX Operating Company only | Eagleville (Eagle Ford-1) | La Salle | 1 | 29.5K | 3.37M | Jun 2014 – 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 |
| Mitchell 4 G-9-161386 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 29.2K | 2.17M | Aug 1996 – Aug 2026 |
| Boston Texas Land & Trust G-4-284805 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 29.2K | 2.94M | May 2018 – Aug 2026 |
| Scurlock Trust G-3-142319 | WRD Operating LLC only | Clinton, N. (Yegua 8400) | Harris | 1 | 29.1K | 3.22M | by Jan 1993 – Dec 2025 |
| Mitchell 11 G-9-153243 | Vintage Petroleum, LLC only | Pakenham (Thrusted) | Terrell | 1 | 29K | 2.03M | Nov 1995 – Apr 2001 |
| Boston Texas Land & Trust G-4-272976 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 28.8K | 1.82M | Apr 2014 – Aug 2026 |
| Boston Texas Land & Trust G-4-272973 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 28.7K | 2.11M | Mar 2014 – Aug 2026 |
| Dunn Family Trust a Unit G-13-274506 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 28.6K | 1.29M | Oct 2009 – Aug 2026 |
| Boring, George W. Trustee GU G-13-235186 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 28.4K | 4.6M | Oct 2007 – Aug 2026 |
| Hager Trust 616 G-14-279070 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 28.3K | 383K | Apr 2015 – Aug 2026 |
| Bracken Grandchildren Trust G-6-135300 | Valence Operating Company only | Noonday (Travis Peak) | Smith | 1 | 28.2K | 1.41M | by Jan 1993 – Feb 2019 |
| Nelson, C. L. Trust et Al G-2-96089 | Samson Lone Star, LLC only | Limes (Wilcox 9900) | Live Oak | 1 | 28.2K | 1.33M | by Jan 1993 – Jun 2000 |
| Flowers Trust "A" G-14-250135 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 28.1K | 830K | May 2009 – Aug 2026 |
| Flowers Trust "B" G-14-247757 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 27.9K | 1.55M | Jan 2009 – Aug 2026 |
| Royall, John Trust et Al G-6-181045 | Eqv Operating LLC only | Cayuga (Pettit) | Anderson | 1 | 27.9K | 1.18M | Jan 2001 – Feb 2023 |
| Regmund Family Trust Gas Unit 1 G-2-268683 | Mmar Group Inc only | Sugarkane (Eagle Ford) | Karnes | 1 | 27.7K | 703K | Aug 2012 – Aug 2018 |
| Trammel Trust G-3-93136 | Devon Energy Production Co, L.P. only | Leggett (Woodbine) | Polk | 1 | 27.5K | 899K | by Jan 1993 – Oct 2004 |
| Blackwell Trust Gas Unit G-2-223762 | Mosley Oil &gas Inc only | Friar Ranch, S. (Consolidated) | De Witt | 1 | 27K | 5.26M | Nov 2006 – Apr 2022 |
| Flowers Trust G-14-149917 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 26.9K | 780K | Mar 1994 – Aug 2026 |
| West Ranch G-10-234730 | Sandridge Expl. and Prod., LLC only | Pinon (Overthrust) | Pecos | 1 | 26.8K | 232K | Oct 2007 – Sep 2014 |
| Flowers Trust G-14-267522 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 26.7K | 1.11M | May 2012 – Aug 2026 |
| Watkins Scholarship Trust G-6-287222 | Sabine Energy Inc. only | Oak Hill (Travis Peak) | Rusk | 1 | 26.6K | 551K | Nov 2018 – Aug 2026 |
| Boston Texas Land & Trust G-4-266234 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 26.5K | 2.16M | Nov 2012 – Aug 2026 |
| Flowers Trust "A" G-14-258245 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 26.5K | 666K | Apr 2010 – Aug 2026 |
| Vollmert Trust G-14-266386 | Bracken Operating, L.L.C. only | Mendota, NW. (Granite Wash) | Roberts | 1 | 26.5K | 2.17M | Mar 2012 – Aug 2026 |
| Cook Family Trust G-3-254627 | Vantage Operating, LLC only | Cecil Noble (Wilcox 9325) | Colorado | 1 | 26.4K | 1.15M | Dec 2009 – Mar 2023 |
| Boston Texas Land & Trust G-4-272965 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 26.2K | 1.53M | Feb 2014 – Aug 2026 |
| Mitchell 9 G-9-168042 | PXP Texas Inc. only | Pakenham (Thrusted) | Terrell | 1 | 26.1K | 4.11M | Jan 1998 – Feb 2005 |
| Flowers Trust "A" G-14-254685 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 25.9K | 556K | Jan 2010 – Aug 2026 |
| Rust Unit G-3-294630 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 25.7K | 206K | Mar 2022 – Jul 2026 |
| Flowers Trust 'A' G-14-276176 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 25.6K | 453K | Jul 2014 – Aug 2026 |
| Red Crest Trust G-4-213498 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 25.5K | 2.5M | Jul 2005 – Aug 2026 |
| Schreiner Ranch Trust II G-2-144885 | Sandel Operating Company only | Oakville (Wilcox Cons.) | Live Oak | 1 | 25.5K | 1.46M | Feb 1993 – Aug 2026 |
| Mitchell 8 G-9-251993 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 25.4K | 3.43M | Apr 2009 – Apr 2025 |
| Flowers Trust "A" G-14-158591 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 25.2K | 746K | May 1996 – 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 |
| Boston Texas Land & Trust G-4-276356 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 24.7K | 3.9M | Dec 2014 – Aug 2026 |
| Schreiner Ranch Trust II G-2-147342 | McCombs Energy LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 24.7K | 890K | Oct 1993 – Sep 1996 |
| Boston Texas Land & Trust G-4-269233 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 24.6K | 1.46M | Dec 2012 – 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 |
| Hill, F. S. Trustee G-5-105232 | HRB Operating Company, Inc. only | Winkler, S.(cotton Valley Lime) | Freestone | 1 | 24.5K | 1.32M | by Jan 1993 – Jul 2025 |
| Bruni Mineral Trust G-4-153714 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 24.4K | 4.67M | Apr 1995 – Aug 2026 |
| Tuttle Trust Gas Unit G-2-224131 | PA Prospect LLC only | Tom Long (Lower Wilcox) | Lavaca | 1 | 24.4K | 938K | Oct 2006 – Nov 2012 |
| West Ranch G-10-249735 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24.3K | 982K | Apr 2008 – Jul 2026 |
| E.A. Weinheimer-Grady Trust Unit G-3-139930 | Crimson Exploration Inc. only | Alwan (Cook Mountain) | Wharton | 1 | 24.1K | 534K | Jun 1993 – Mar 2005 |
| Bruni Mineral Trust "B" G-4-180562 | Killam Oil Co., Ltd. only | Moritas Creek (8500) | Webb | 1 | 24K | 3.64M | Nov 2000 – Apr 2022 |
| Martin Trust B G-14-129707 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 23.8K | 361K | by Jan 1993 – Nov 2021 |
| Flowers Trust "B" G-14-250154 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 23.8K | 1.18M | Mar 2009 – Aug 2026 |