| Boston Texas Land & Trust G-4-270804 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 58.3K | 2.31M | Aug 2013 – Aug 2026 |
| Johnson Trust 01 G-2-260388 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 57.3K | 1.69M | Apr 2011 – Aug 2026 |
| Brown Trusts Unit 3 G-1-264016 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 56.6K | 4.39M | Oct 2011 – Aug 2026 |
| Brown Trust Unit 1 G-1-261085 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 55.9K | 3.22M | Aug 2011 – Aug 2026 |
| Mitchell 4 G-9-155637 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 55.7K | 4.66M | Jul 1995 – Aug 2026 |
| Boston Texas Land & Trust G-4-10990 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 54.1K | 3.55M | by Jan 1993 – Aug 2026 |
| Hager Trust 616 G-14-280951 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 53.8K | 603K | Jan 2015 – Aug 2026 |
| Schreiner Ranch Trust II G-2-144503 | Sandel Operating Company only | Oakville (Wilcox Cons.) | Live Oak | 1 | 53.2K | 1.89M | by Jan 1993 – Jan 2019 |
| Flowers Trust "B" G-14-258647 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 52.6K | 4.41M | Jun 2010 – Aug 2026 |
| Semmes Trust, et al "906" G-4-193558 | Hilcorp Energy Company only | Rincon (Frio Consolidated H & J) | Starr | 1 | 52.6K | 333K | Aug 2002 – Oct 2018 |
| Langtry-Shirley Trust G-2-256871 | Continental Operating Co. only | Mineral, West (7900) | Bee | 1 | 52.2K | 166K | Apr 2010 – Jan 2018 |
| Marshall Brothers Trusts -C- GU G-3-152177 | Galloway Lone Star, L.L.C. only | Tomball, SE. (11700) | Harris | 1 | 52.1K | 3.24M | Dec 1994 – Jan 2011 |
| Boston Texas Land & Trust G-4-254326 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 51.6K | 1.7M | Jan 2010 – Aug 2026 |
| Brown-Trusts Unit 2 G-1-271748 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 51.2K | 4.03M | Nov 2013 – Aug 2026 |
| Humphreys Trust G-14-290517 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 50.9K | 676K | Jan 2019 – Aug 2026 |
| Boston Texas Land & Trust G-4-172439 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 50.3K | 2.44M | Feb 1999 – Aug 2026 |
| St. George Gas Unit G-3-168733 | Ventex Operating Corp. only | Rusty (13000) | Matagorda | 1 | 49.3K | 3.16M | Jan 1998 – Nov 2004 |
| Mitchell 9 G-9-154850 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 49.1K | 5.26M | May 1995 – Aug 2026 |
| Cranz Trust G-3-159767 | Jamex, Inc. only | Chesterville, N. (Pack) | Colorado | 1 | 49K | 4.32M | Aug 1996 – Dec 2021 |
| Boston Texas Land & Trust G-4-208623 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 48.7K | 1.39M | Mar 2005 – Aug 2026 |
| Boston Texas Land & Trust G-4-270878 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 47.7K | 3.08M | Oct 2013 – Aug 2026 |
| Nelson, C. S. Trust et Al G-2-147165 | CLR Secondary Recovery, LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 47.5K | 1.92M | Oct 1993 – Jan 2016 |
| Boston Texas Land & Trust G-4-271416 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 47.5K | 2.87M | Dec 2013 – Aug 2026 |
| Thornton Trust 4-60 G-10-268078 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 47.4K | 225K | Aug 2012 – Aug 2026 |
| Dunn Family Trust C Unit G-13-273747 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 47.2K | 2.14M | Oct 2009 – Aug 2026 |
| McClung, Anna 1 G-9-154237 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 46.2K | 3.8M | Jan 1995 – Aug 2026 |
| Boston Texas Land & Trust G-4-178623 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 45.9K | 2.58M | Jul 2000 – Apr 2025 |
| JP Trust 76 Lip G-14-270164 | Unbridled Resources, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 45.7K | 217K | Apr 2013 – Aug 2026 |
| Sabine Royalty Trust G-6-279700 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 45.7K | 3.71M | Mar 2015 – Aug 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 |
| Boston Texas Land & Trust G-4-169846 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 45.6K | 2.98M | Aug 1998 – Oct 2016 |
| Boston Texas Land & Trust G-4-200065 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 45.4K | 2.56M | Jan 2004 – Aug 2026 |
| Dunn Family Trust B Unit G-13-274127 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 44.8K | 1.09M | Oct 2009 – Aug 2026 |
| Brown-Trusts G-1-278626 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 44.5K | 743K | Nov 2015 – Aug 2026 |
| Frost Trust 49 G-4-188049 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 44.5K | 2.76M | Jan 2002 – Aug 2026 |
| Boston Texas Land & Trust G-4-201080 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 44.2K | 1.35M | Mar 2004 – 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 |
| Graham Trust G-3-266641 | Hilcorp Energy Company only | Rebel (Yegua) | Jefferson | 1 | 43.7K | 851K | Jun 2012 – Jul 2026 |
| Blackwell Trust Gas Unit G-2-231207 | Mosley Oil &gas Inc only | Friar Ranch, S. (Consolidated) | De Witt | 1 | 43.6K | 5.94M | Sep 2007 – Apr 2021 |
| Boston Texas Land & Trust G-4-272982 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 43.4K | 1.95M | Jul 2014 – Aug 2026 |
| Ricks Living Trust GU 1 G-2-268490 | Falcon Production LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 43.3K | 954K | Aug 2012 – Dec 2022 |
| Boston Texas Land & Trust G-4-173167 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 43.1K | 2.28M | Mar 1999 – 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 |
| Schneider Trust, et al, Unit G-1-271744 | Javelin Energy Partners Mgmt LLC only | Indio Tanks (Pearsall) | Frio | 1 | 42.8K | 378K | Jul 2013 – Apr 2020 |
| Boston Texas Land & Trust G-4-10989 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 41.6K | 3.38M | by Jan 1993 – Aug 2026 |
| Flowers Trust G-14-258731 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 41.5K | 1.42M | Jul 2010 – Jul 2025 |
| Martin Trust G-14-278052 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 41.5K | 2.54M | Jan 2015 – 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 |
| Begert Trust 6 G-14-268897 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 41.1K | 2.19M | Aug 2011 – Aug 2026 |
| Boston Texas Land & Trust G-4-168648 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 40.7K | 3.03M | Mar 1998 – Aug 2026 |