| Cowden Ranch "18" O-10-30785 | Rust Oil Corp. only | Cowden (Cisco) | Ector | 4 | 183K | 222K | by Jan 1993 – Aug 2026 |
| Barber, J.dell Sr. Trustee O-10-26143 | Cedar Bend Oil Company only | Coleman Ranch | Mitchell | 10 | 183K | 19 | by Jan 1993 – Aug 2026 |
| Cowden Ranch -7- O-10-32581 | Rust Oil Corp. only | Cowden (Penn Detrital) | Ector | 3 | 182K | 208K | by Jan 1993 – Aug 2026 |
| Maltsberger-DB Trust Allo A G-1-297256 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 179K | 1.1M | Mar 2021 – Aug 2026 |
| Brown Trust-SS Alloc D O-1-19203 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 179K | 330K | Mar 2018 – Aug 2026 |
| TP Land Trust "D" O-10-36634 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Midland | 4 | 177K | 298K | Apr 2001 – Sep 2021 |
| Eyhorn-Bego Trust (SA) G-2-276944 | Repsol Oil & Gas USA, LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 175K | 1.92M | Nov 2014 – Aug 2026 |
| Welch Trust 8-7-E O-9-20772 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Reagan | 1 | 175K | 677K | Mar 2019 – Aug 2026 |
| Hamilton Trust Unit C G-2-270930 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 174K | 1.03M | Jan 2014 – Apr 2026 |
| Maryland Trust O-4-13179 | Kaler Energy Corp. only | McCampbell (Q Sand) | San Patricio | 1 | 174K | 193K | Aug 2003 – Jun 2006 |
| Moses Trust '69' O-10-44008 | Avid Energy Assets LLC only | Spraberry (Trend Area) | Martin | 6 | 173K | 120K | May 2013 – Aug 2026 |
| Brown-Trusts G-1-277881 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 172K | 3.14M | Dec 2015 – Aug 2026 |
| Semmes Trust, et al "906" O-4-13057 | Conocophillips Company only | Rincon (Vicksburg 95 906-5) | Starr | 1 | 172K | 244K | Jun 2001 – May 2003 |
| Power-Trust / T Bar-X O-5-3636 | Weatherly Oil & Gas, LLC only | Ici (Georgetown) | Robertson | 2 | 171K | 33.7K | Aug 1998 – Aug 2018 |
| Lasca Butler Searcy Trust G-2-254301 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Live Oak | 1 | 169K | 672K | May 2009 – Mar 2017 |
| Baker Family Trust G-2-288830 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Live Oak | 1 | 169K | 1.91M | Mar 2020 – Aug 2026 |
| Hamilton Trust Unit D G-2-276976 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 167K | 1.25M | Nov 2014 – Aug 2026 |
| Ford, Ed "A" O-8-14332 | Long Trusts, The only | Lucky Lane (Strawn) | Stephens | 2 | 166K | 54 | by Jan 1993 – Jul 2026 |
| Thruston, H. E. O-11-62372 | Hilcorp Energy Company only | Levelland | Hockley | 2 | 164K | 51.3K | by Jan 1993 – Aug 2026 |
| T. P. Land Trust -A- O-10-839 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 5 | 163K | 20.1K | by Jan 1993 – Aug 2026 |
| Brown Trust-SS Alloc F O-1-19205 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 159K | 171K | Mar 2018 – Aug 2026 |
| Lott Trust O-11-68213 | Voyager Gas Corporation only | Lazy -JL- (U. Spraberry Lime) | Garza | 5 | 159K | 21.6K | Jun 2000 – Mar 2005 |
| Maltsberger-DB Trust Allo G-1-297319 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 158K | 744K | Nov 2020 – Aug 2026 |
| T. P. Land Trust -B- O-10-840 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 4 | 157K | 5.48K | by Jan 1993 – Aug 2026 |
| Alliance Trust O-11-66981 | Unitex Oil & Gas, L.L.C. only | Sharon Ridge (Clear Fork) | Scurry | 3 | 157K | 18 | Apr 1993 – Aug 2026 |
| McFaddin Trust G-3-216508 | Square Mile Energy, L.L.C. only | Gum Island,n. (Hackberry 3-C) | Jefferson | 1 | 156K | 1.63M | Mar 2006 – Aug 2007 |
| Conrad Trust O-10-33410 | Dinero Operating Company only | Gartner (Penn. Reef) | Howard | 1 | 155K | 172K | by Jan 1993 – Nov 2011 |
| Leary Trust O-1-14936 | CML Exploration, LLC only | Pearsall (Austin Chalk) | Zavala | 1 | 155K | 3.31K | Apr 2008 – Jul 2026 |
| Brown-Trusts 3H G-1-258271 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 155K | 6.04M | Oct 2010 – Apr 2026 |
| Speary Family Trust Unit A G-2-277547 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 153K | 607K | Mar 2015 – Aug 2026 |
| TP Land Trust "B" O-10-36583 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Midland | 4 | 153K | 371K | Mar 2001 – Sep 2021 |
| Boston Texas Land & Trust G-4-190253 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 153K | 4.05M | Aug 2002 – Sep 2025 |
| Hall Trust O-11-68609 | Yucca Energy, Inc. only | Reeves (San Andres) | Yoakum | 6 | 153K | 254K | Aug 2003 – Dec 2014 |
| Hoefs Trust O-10-44764 | Vital Energy, Inc. only | Hoefs T-K (Wolfcamp) | Reeves | 1 | 153K | 241K | Sep 2013 – Oct 2024 |
| Slaughter-Rhodes Trust G-2-280732 | Repsol Oil & Gas USA, LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 152K | 1.62M | Mar 2016 – Aug 2026 |
| Newman Brown Trust Unit G-1-298217 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 151K | 263K | Jun 2023 – Aug 2026 |
| Reed Trust 55-1-26 G-10-276059 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Loving | 1 | 150K | 2.38M | Jul 2014 – Apr 2018 |
| Hall Trust O-10-42504 | Owl Ops LLC only | Spraberry (Trend Area) | Howard | 3 | 149K | 412K | Nov 2011 – Aug 2026 |
| Leonard Revocable Trust Unit 1 O-10-49556 | XTO Energy Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 149K | 225K | Dec 2017 – Jun 2018 |
| Eyhorn-Bego Trust (SA) G-2-276384 | Repsol Oil & Gas USA, LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 149K | 1.55M | Dec 2014 – Feb 2024 |
| Barnett Trust 90-TTT-01 WFB Nwse O-10-61819 | Matador Production Company only | Phantom (Wolfcamp) | Loving | 1 | 149K | 3.32M | Oct 2023 – Aug 2026 |
| Maltsberger-DB Trust Allo B G-1-297304 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 148K | 1.12M | Sep 2021 – Aug 2026 |
| Newman Brown Trust Unit G-1-297781 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 147K | 371K | Nov 2015 – Aug 2026 |
| Speary Family Trust Unit A G-2-277538 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 147K | 593K | Mar 2015 – Aug 2026 |
| Cox Trust Unit O-3-23395 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 147K | 138K | Sep 1997 – Aug 2026 |
| Dodson Trust "12" O-10-40966 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 147K | 563K | Mar 2011 – Aug 2026 |
| McClintic Trust O-10-25979 | Apache Corporation only | Spraberry (Trend Area) | Midland | 1 | 146K | 140K | by Jan 1993 – Aug 2026 |
| Smith, Mary O-7-8568 | Long Trusts, The only | East Texas | Rusk | 21 | 146K | 19 | by Jan 1993 – Jul 2026 |
| Hamilton Trust Unit D G-2-263687 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 145K | 1.01M | Apr 2011 – Jul 2026 |
| Robinson, J. A. Trust O-1-4837 | Kebo Oil & Gas, Inc. only | Christine, SE. (Wilcox) | Atascosa | 1 | 144K | 98K | by Jan 1993 – Aug 2026 |