| Henderson Trust "EE" G-9-152110 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 1.56K | 981K | Nov 1994 – Aug 2026 |
| Barton Trust 379 G-14-208319 | Latigo Petroleum, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 1.55K | 549K | Dec 2004 – Aug 2026 |
| Henderson Trust DD G-9-171071 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 1.55K | 87.6K | Sep 1998 – Aug 2026 |
| Coates Energy Trust, Etal O-4-10716 | Magnum Engineering Company only | Rincon, North (4350) | Starr | 1 | 1.55K | 7.91K | by Jan 1993 – Nov 1993 |
| Frost Trust 49 G-4-235830 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.55K | 597K | Oct 2007 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-222956 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 1.55K | 2.6M | Aug 2006 – Aug 2026 |
| Longfellow G-10-198039 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.54K | 2.37M | Sep 2003 – Aug 2026 |
| West Ranch G-10-198231 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.54K | 6.3M | Sep 2003 – Nov 2012 |
| Kincaid, A. R. Trust "D" G-9-202001 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 1.51K | 254K | Feb 2004 – Mar 2008 |
| Laird, S.S. Est. et Al G-6-178031 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.51K | 961K | May 2000 – Jul 2026 |
| Guaranty Title & Trust G-4-164736 | Royal Production Company, Inc. only | Corpus Christi, West ( 9500) | Nueces | 1 | 1.51K | 79.2K | Jul 1997 – Dec 1997 |
| Hill Trust G-8-160149 | Xplore Operating, LLC only | Meeker (Conglomerate 4950) | Parker | 1 | 1.51K | 135K | Sep 1995 – Sep 2006 |
| First National Trust G-14-108008 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 1 | 1.51K | 707K | by Jan 1993 – Aug 2026 |
| Everett -C- O-7-7670 | Aaa Oil Trust only | East Texas | Upshur | 2 | 1.5K | 6 | Jul 1993 – Aug 1999 |
| Mitchell-Williams Trust G-5-197935 | Valence Operating Company only | Loper (Cotton Valley Lime) | Freestone | 1 | 1.5K | 261K | May 2003 – Sep 2024 |
| Mitchell 8 G-9-161227 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 1.5K | 692K | Feb 1996 – Aug 2026 |
| Frost Trust 11 G-4-192641 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.49K | 2.05M | Nov 2002 – Aug 2026 |
| Wm James Trust G-4-53169 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 1.48K | 599K | by Jan 1993 – Aug 2026 |
| Semmes Trust, et al 906 G-4-187373 | Conocophillips Company only | Rincon (Vicksburg 95) | Starr | 1 | 1.48K | 722K | Nov 2001 – Dec 2002 |
| Flying LL Trust G-6-247615 | Buffco Production Inc. only | Oak Hill (Cotton Valley) | Harrison | 1 | 1.48K | 79.1K | Feb 2009 – Mar 2012 |
| Dinn Mineral Trust G-4-199020 | Hughes, Dan A. Company, L.P. only | Dinn, Deep (Wilcox 12,900) | Duval | 1 | 1.47K | 3.57M | Dec 2003 – Mar 2014 |
| Thorpe O-8-14985 | Edmison, M. Trust #2 only | Stephens County Regular | Stephens | 1 | 1.47K | 14 | by Jan 1993 – Jul 1996 |
| Blackwell Trust Gas Unit G-2-226817 | Mosley Oil &gas Inc only | Friar Ranch, S. (Consolidated) | De Witt | 1 | 1.47K | 287K | Mar 2007 – Apr 2022 |
| West Ranch G-10-248619 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.45K | 2.37M | Dec 2008 – Jul 2026 |
| Barrera, Teresa Trust G-4-217463 | Chesapeake Operating, Inc. only | McMoran (8960) | Hidalgo | 1 | 1.45K | 208K | Feb 2006 – Dec 2008 |
| Watkins Scholarship Trust G-6-232384 | Sabine Oil & Gas Corporation only | Minden (Cotton Valley Cons.) | Rusk | 1 | 1.45K | 212K | Sep 2007 – Sep 2018 |
| Wheat Trust C27-4 Lov G-10-239124 | Pdeh LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 1.43K | 2.39M | May 2008 – Jul 2022 |
| Read Trust G-14-174819 | Bracken Operating, L.L.C. only | Hemphill (Douglas) | Hemphill | 1 | 1.43K | 443K | Oct 1999 – Feb 2022 |
| Kliewer/Wiebe Trust O-14-7661 | High River Res Operating, LLC only | Farnsworth, N. (Marmaton) | Ochiltree | 1 | 1.43K | 46 | Nov 2005 – Sep 2009 |
| Bruni Mineral Trust 'A' G-4-142742 | Hilcorp Energy Company only | Cerrito Creek (Lobo) | Webb | 1 | 1.43K | 765K | by Jan 1993 – Aug 2026 |
| Longfellow 600 MD G-10-246935 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.43K | 4.09M | May 2008 – Jul 2026 |
| West Ranch G-10-239351 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.43K | 557K | Apr 2008 – Aug 2026 |
| Cole Trust Four G-13-246951 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Denton | 1 | 1.42K | 3M | Feb 2009 – Aug 2026 |
| West Ranch G-10-192543 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.42K | 3.99M | Nov 2002 – Aug 2026 |
| West Ranch G-10-229060 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.42K | 354K | May 2007 – Oct 2025 |
| Allison G-10-236075 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.42K | 875K | Sep 2007 – Aug 2026 |
| Boston Texas Land Trust G-4-142227 | Hanson Production Company only | Javelina, W (4900) | Starr | 1 | 1.42K | 223K | by Jan 1993 – Jan 1995 |
| Todd, Robert S. Trust O-4-12543 | Slimhole Engineering Co., Inc. only | La Sara (No. 21 Sand) | Willacy | 1 | 1.42K | 105 | Jan 1996 – Mar 1996 |
| Frost Trust 13 G-4-184897 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.41K | 391K | Aug 2001 – Aug 2026 |
| Yarbrough Trust G-5-178888 | Lodestone Operating, Inc. only | Oletha (Travis Peak) | Limestone | 1 | 1.41K | 948K | Jul 2000 – Aug 2026 |
| West Ranch G-10-224084 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.4K | 6.84M | Apr 2005 – Mar 2024 |
| Coates Energy Trust et Al G-4-123212 | Magnum Engineering Company only | San Manuel (8650) | Hidalgo | 1 | 1.4K | 228K | by Jan 1993 – Oct 2014 |
| Semmes Trust, et al 906 G-4-195092 | Forest Oil Corporation only | Rincon (Vicksburg Cons.) | Starr | 1 | 1.38K | 464K | Feb 2003 – Jun 2004 |
| West Ranch G-10-204973 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.38K | 140K | Sep 2009 – May 2026 |
| Uribe Family Trust G-4-183702 | EOG Resources, Inc. only | Pok - a - Dot (8600) | Zapata | 1 | 1.38K | 311K | Jun 2001 – Apr 2011 |
| West Ranch G-10-224313 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.38K | 2.82M | Nov 2006 – Jul 2026 |
| University 32 G-9-164878 | OXY USA Inc. only | Pakenham (Thrusted) | Terrell | 1 | 1.37K | 55.3K | May 1997 – Apr 2001 |
| West Ranch G-10-247010 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.37K | 498K | Aug 2008 – Jan 2026 |
| Begert Trust 31 G-14-254163 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 1.37K | 264K | Apr 2009 – Aug 2026 |
| Rust O-9-12005 | Littlepage, Tommy only | FWB (Canyon Sand) | Tom Green | 1 | 1.37K | 23 | by Jan 1993 – Oct 1995 |