| Dusek, F. J. Trust G-4-173111 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 13K | 1.01M | Mar 1999 – Oct 2022 |
| Boston Texas Land & Trust G-4-265948 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13K | 1.01M | Apr 2012 – Aug 2026 |
| Boston Texas Land & Trust G-4-159253 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13K | 1.19M | May 1996 – Aug 2026 |
| Edith Brown Trust O-8-28922 | IS Energy, LLC only | Bissett, E. (Strawn Sand) | Stonewall | 1 | 13K | 0 | Feb 2001 – Oct 2014 |
| Boston Texas Land & Trust G-4-275518 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 12.9K | 3.33M | Dec 2014 – Apr 2025 |
| Walker-Buckler Trust 380-381 O-8-25748 | Hilltex Operating Company, LLC only | Shackelford County Regular | Shackelford | 17 | 12.9K | 63 | by Jan 1993 – Dec 2012 |
| McFarland Trust O-6-13884 | Jla Resources Company only | Anwac (900 Wilcox) | Anderson | 1 | 12.9K | 1.52K | Jan 1999 – Jun 2026 |
| Denton Trust O-6-12925 | Brazos Petroleum, Inc. only | Itty Bitty (Paluxy) | Wood | 2 | 12.9K | 12 | May 1993 – Apr 1994 |
| Frost Trust 29 G-4-187600 | EOG Resources, Inc. only | Tiffany (Wilcox Carrizo) | Webb | 1 | 12.8K | 746K | Feb 2002 – Jan 2010 |
| Cole Trust Stony G-13-187860 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 12.7K | 929K | Jan 2002 – Aug 2026 |
| Steele, L. M. Trust G-3-130044 | Amrwr, LLC only | Duncan Slough, SW (Frio 7) | Matagorda | 1 | 12.7K | 3.08M | by Jan 1993 – May 2011 |
| Fossil Wildman Trust Unit No. 1 O-5-3928 | Contrast Energy, LLC only | Hilltop Resort (Glen Rose 8498) | Leon | 1 | 12.6K | 0 | Jul 2010 – Aug 2026 |
| Fogle Trust G-6-245511 | Craton Operating LLC only | Carthage, North (Cotton Valley) | Harrison | 1 | 12.6K | 856K | Dec 2008 – Aug 2026 |
| West Ranch G-10-237942 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12.6K | 80K | Nov 2007 – Aug 2026 |
| Trusty Gas Unit G-3-174077 | Silver Oak Energy, LLC only | Village Mills East (Y-3) | Hardin | 1 | 12.6K | 233K | Jul 1999 – Feb 2012 |
| Cole Trust Stony G-13-188538 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 12.6K | 771K | Mar 2002 – Nov 2024 |
| McClung, Anna 1 G-9-156356 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 12.6K | 1.09M | Aug 1995 – Aug 2026 |
| Walker-Buckler Trust (TR.15) O-8-11934 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 6 | 12.5K | 383K | by Jan 1993 – Aug 2026 |
| USA Trust G-13-251979 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 12.4K | 1.45M | Jun 2009 – Aug 2026 |
| Cameron Minerals Trust G-3-121579 | Garrison Operating, L.L.C. only | Glendale, East (Woodbine) | Trinity | 1 | 12.4K | 952K | by Jan 1993 – Oct 2012 |
| Flowers Trust G-14-223677 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 12.4K | 784K | Oct 2006 – Aug 2026 |
| Cook, Vannie, Trusts O-4-6247 | RNS Oil Co. only | Los Olmos | Starr | 59 | 12.3K | 18 | by Jan 1993 – Dec 2004 |
| Bruni Mineral Trust "B" G-4-197250 | Hilcorp Energy Company only | Hubberd (Lobo) | Webb | 1 | 12.3K | 4.25M | Jul 2003 – Aug 2026 |
| Dinn Mineral Trusts, The O-4-12055 | Hilcorp Energy Company only | Guerra (3800) | Webb | 1 | 12.3K | 17 | by Jan 1993 – Oct 1996 |
| Sievers, Edwald et Al O-2-5133 | Long Trusts, The only | Holly (Yegua 4600 Up.) | De Witt | 1 | 12.3K | 68 | by Jan 1993 – Sep 2005 |
| Garrett Trust G-6-280103 | Valence Operating Company only | Yantis (Heard Zone) | Wood | 1 | 12.3K | 51.4K | Oct 2015 – Aug 2026 |
| Mitchell 9 G-9-203111 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 12.2K | 1.67M | Dec 2003 – Aug 2026 |
| Moss, Paul Estate O-10-29502 | Rust Oil Corp. only | Mosswell (Strawn 8720) | Ector | 2 | 12.2K | 10K | by Jan 1993 – Nov 1996 |
| James Abraham Trust G-14-181221 | Mewbourne Oil Company only | Canadian, West (Morrow Upper) | Hemphill | 1 | 12.2K | 1.48M | Dec 2000 – Aug 2026 |
| West Ranch G-10-208596 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12.1K | 1.11M | Feb 2005 – May 2026 |
| Garza Zamora Energy Trust G-4-234053 | Merit Energy Company only | Flores (Vicksburg, Lower) | Hidalgo | 1 | 12.1K | 1.37M | Oct 2007 – Oct 2020 |
| Flowers Trust "A" G-14-166494 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 12.1K | 937K | Sep 1997 – Sep 2024 |
| Henderson Trust "OO" G-9-143876 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 12K | 804K | by Jan 1993 – Aug 2026 |
| Brittingham Trust "C" O-8-14444 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 5 | 11.9K | 20 | by Jan 1993 – May 2009 |
| Cole Trust Stony G-13-188536 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 11.9K | 796K | Feb 2002 – Aug 2026 |
| Wood Family Memorial Trust O-2-9025 | New Source Oil & Gas, LLC only | Wood High (Elsie) | Victoria | 1 | 11.9K | 0 | Mar 2006 – Aug 2010 |
| Rhodes Trust G-13-287011 | J B J Oil Properties, Inc. only | Casteel (Congl. 4350) | Young | 1 | 11.9K | 104K | Nov 2018 – Aug 2026 |
| Cole Trust Stony G-13-189107 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 11.9K | 705K | Apr 2002 – Jan 2021 |
| Winterbotham, J.M. Trust "B" O-9-11966 | OXY USA Inc. only | Dove Creek (Cisco) | Irion | 1 | 11.9K | 73.8K | by Jan 1993 – Sep 2012 |
| Black Trust 49 G-14-281992 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 11.8K | 360K | Mar 2017 – Aug 2026 |
| Davis-Trustee O-14-8242 | Opal Operating Company LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 11.8K | 999 | May 2011 – Aug 2026 |
| C-Bruni Mineral Trust G-4-65462 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 11.8K | 2.27M | by Jan 1993 – Aug 2026 |
| Garza Zamora Energy Trust G-4-125199 | Merit Energy Company only | Flores (Vicksburg, Lower) | Hidalgo | 1 | 11.8K | 703K | by Jan 1993 – Mar 2014 |
| James Trust G-1-287461 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 11.8K | 3.46M | Jul 2019 – Aug 2026 |
| Garcia-Ncnb-Paschall Trust O-1-13279 | Blackbrush O & G, Inc. only | Pearsall (Austin Chalk) | Frio | 1 | 11.8K | 9.45K | by Jan 1993 – May 1995 |
| Boston Texas Land & Trust G-4-293197 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 11.8K | 564K | Jun 2022 – Aug 2026 |
| Cole Trust Stony G-13-263690 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 11.7K | 2.47M | Aug 2011 – Aug 2026 |
| Silva-Coates Energy Trust G-4-154356 | Kerr-McGee Oil & Gas Onshore LLC only | Kelsey (Vxkbg. Consol.) | Starr | 1 | 11.7K | 413K | Mar 1995 – Apr 2004 |
| Henderson Trust "NN" G-9-144806 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 11.7K | 546K | Mar 1993 – Aug 2026 |
| Benavides Trust G-4-193953 | Merit Energy Company only | Los Mogotes (Wilcox Cons.) | Zapata | 1 | 11.7K | 2.39M | Feb 2003 – Aug 2026 |