| Graham Trust G-3-266641 | Hilcorp Energy Company only | Rebel (Yegua) | Jefferson | 1 | 43.7K | 851K | Jun 2012 – Jul 2026 |
| Flowers Trust O-14-4713 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 3 | 43.6K | 1.55M | by Jan 1993 – Oct 2017 |
| 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 |
| Trainer Trust 16 O-10-41166 | Whiting Oil and Gas Corporation only | Hoban (Bone Springs) | Pecos | 1 | 43.2K | 29.9K | Jul 2010 – Dec 2010 |
| 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 |
| Welch Trust 12 O-9-18906 | Diamondback E&P LLC only | Spraberry (Trend Area) R 40 Exc | Upton | 2 | 42.7K | 185K | Oct 2014 – Aug 2026 |
| Mauritz, Fred Trust Est. O-2-6900 | Fredco only | Mauritz (6100) | Jackson | 1 | 42.6K | 88 | by Jan 1993 – Feb 2008 |
| Green, E.J. Trust O-13-27712 | Roil Operating LLC only | Seymour Pool | Baylor | 6 | 42.6K | 820 | by Jan 1993 – Aug 2026 |
| Gardner Trust O-13-32624 | Ridge Oil Company only | I.M.U. (Caddo Cons.) | Young | 2 | 42.4K | 0 | Aug 2013 – Aug 2026 |
| Kern Trust O-3-21451 | Redbud E & P, Inc. only | Giddings (Austin Chalk-3) | Fayette | 1 | 42.4K | 1.14M | by Jan 1993 – Apr 2024 |
| Woodward Trust O-10-42973 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 1 | 42.1K | 70K | Jan 2012 – Nov 2021 |
| Flowers Trust "B" O-14-7209 | BP America Production Company only | Mendota, NW. (Granite Wash) | Roberts | 2 | 42K | 797K | Jun 1997 – May 2002 |
| Bensch Family Trust 1082 Lip O-14-8883 | Unbridled Resources, LLC only | Kiowa Creek (Marmaton) | Lipscomb | 1 | 41.9K | 65.9K | Aug 2012 – Nov 2025 |
| Dinn Mineral Trust O-4-13803 | Aurora Resources Corporation only | Orlee | Duval | 4 | 41.7K | 0 | Aug 2013 – Dec 2024 |
| 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 |
| Land Trust O-10-43024 | OXY USA Inc. only | Wolfbone (Trend Area) | Reeves | 1 | 41.6K | 138K | Dec 2011 – Sep 2021 |
| 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 |
| Boa Trust 17 O-10-41586 | New Height Energy, LLC only | Spraberry (Trend Area) | Martin | 2 | 41.4K | 78.2K | Jul 2011 – Sep 2021 |
| Begert Trust 6 G-14-268897 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 41.1K | 2.19M | Aug 2011 – Aug 2026 |
| Hooker Trust O-8-26505 | Lariat Land & Exploration, Inc. only | Lucky Break (Lower Tannehill) | Jones | 1 | 41.1K | 141 | by Jan 1993 – Aug 2026 |
| Jones Trust 189 O-14-7675 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 40.9K | 239K | May 2006 – Aug 2024 |
| Boston Texas Land & Trust G-4-168648 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 40.7K | 3.03M | Mar 1998 – Aug 2026 |
| Mauritz, H. & Trust O-2-6584 | Fredco only | Mauritz (5700) | Jackson | 1 | 40.4K | 15 | by Jan 1993 – Aug 2026 |
| University #36-2 G-9-155506 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 40.3K | 4.22M | Jun 1995 – Aug 2026 |
| Guitar Trust Estate -A- O-10-8765 | P4 Operating, LLC only | Varel (San Andres) | Howard | 1 | 40.3K | 142 | by Jan 1993 – Aug 2026 |
| Mays Trust 81 O-14-8851 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 39.9K | 1.24M | Feb 2012 – Aug 2026 |
| Deatherage Trust O-11-69218 | Flat Top Operating, LLC only | Liberty (Wolfcamp) | Dawson | 1 | 39.7K | 0 | Feb 2008 – Aug 2026 |
| Wilson, John H. Trustee -E- O-10-25409 | Noble Energy Inc only | Rhoda Walker (Canyon 5900) | Ward | 2 | 39.4K | 104K | by Jan 1993 – Mar 2016 |
| Frost Trust 49 G-4-191043 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 39.3K | 2.18M | Jul 2002 – Aug 2026 |
| Sabine Royalty Trust G-6-274787 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 39.2K | 4.02M | Mar 2014 – Aug 2026 |
| Foster O-13-16615 | Horansky Burrell Revocable Trust only | Wichita County Regular | Wichita | 4 | 39.1K | 20 | by Jan 1993 – Jul 2026 |
| Boston Texas Land & Trust G-4-289878 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.1K | 2.72M | Mar 2020 – Aug 2026 |
| Rust-Graham Unit O-3-14431 | Westlands Resources Corporation only | Giddings (Austin Chalk-3) | Burleson | 1 | 39.1K | 95.3K | by Jan 1993 – Apr 2012 |
| Boston Texas Land & Trust G-4-234064 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.1K | 1.25M | Dec 2007 – 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 |
| Hager Trust 616 G-14-279071 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 38.7K | 412K | Feb 2015 – Aug 2026 |
| Cox Trust Unit O-3-23510 | Magnolia Oil & Gas Operating LLC only | Giddings (Buda) | Milam | 1 | 38.6K | 26K | Sep 1997 – Jun 1998 |
| Boston Texas Land & Trust G-4-271191 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 38.5K | 2.38M | Nov 2013 – Aug 2026 |
| Norman,geo.d.,jr.trustee"b" O-10-22995 | Los Hijos de Sanchez J LLC only | Norman (Ellenburger) | Gaines | 1 | 38.4K | 8.51K | by Jan 1993 – Aug 2025 |
| Bryant Trust O-9-14914 | Ovintiv USA Inc. only | Al Reid PHD (Canyon) | Irion | 1 | 38.4K | 0 | Jun 1999 – Jul 2021 |
| C-Bruni Mineral Trust G-4-152405 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38.3K | 5.63M | Oct 1994 – Aug 2026 |
| Martin Trust C G-14-272341 | Presidio Petroleum LLC only | St. Clair (Granite Wash) | Roberts | 1 | 38.2K | 142K | May 2013 – Mar 2022 |
| Sterling Family Trust "D" O-10-34361 | MDC Operating, Inc. only | Double "B" (Canyon) | Mitchell | 1 | 38.2K | 69.8K | Jan 1995 – Aug 1998 |
| Carter Mineral Trust "A" O-8-25362 | Quail Well Service, Inc. only | Suggs (Ellenburger) | Coke | 2 | 38.2K | 30.5K | by Jan 1993 – Nov 2004 |