| Guaranty Title & Trust "A" G-4-10061 | Pine Island Operating, L.L.C. only | Corpus Christi, W. ( 9800 Frio) | Nueces | 1 | 15K | 429K | Apr 1993 – Aug 2026 |
| Sterling Family Trust-A- O-10-33738 | MDC Operating, Inc. only | Vincent, SE. (Strawn) | Mitchell | 1 | 15K | 84.1K | Feb 1993 – Nov 1998 |
| C-Bruni Mineral Trust G-4-65882 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 14.7K | 3M | by Jan 1993 – Aug 2026 |
| Anderson Trust a Unit G-13-270697 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 14.6K | 1.37M | Nov 2010 – Aug 2026 |
| Flowers Trust G-14-164724 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 14.6K | 797K | Jul 1997 – Apr 2024 |
| Carter, M.K. Trust NCT-1 O-10-20250 | Olsen Energy Inc. only | Edwards -04- (Ellenburger S.) | Crane | 1 | 14.5K | 757 | Jan 2009 – Aug 2026 |
| Kincaid, A. R. Trust G-9-143302 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 14.5K | 1.04M | by Jan 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-270876 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 14.5K | 939K | Dec 2013 – Aug 2026 |
| Jackson Trust O-13-22851 | Bettis, Boyle & Stovall only | Jerrye-Jan (Congl.) | Jack | 1 | 14.5K | 113K | by Jan 1993 – Mar 2013 |
| TP Land Trust "25" O-10-49459 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 2 | 14.3K | 16K | Jan 2018 – Mar 2025 |
| Bruni Mineral Trust G-4-153505 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 14.3K | 4.64M | Feb 1995 – Aug 2026 |
| Iowa Realty Trust "B" O-10-33242 | Incline Energy only | Pecos Valley, S. (Devonian) | Pecos | 1 | 14.3K | 258K | by Jan 1993 – Oct 2016 |
| Coates Energy Trust GU 1 G-4-176035 | Hughes, Dan A. Company, L.P. only | Jeffress (Vicksburg T) | Hidalgo | 1 | 14.3K | 1.4M | Feb 2000 – Aug 2008 |
| University 4 G-9-168840 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 14.3K | 651K | Jan 1998 – Aug 2026 |
| Henderson Trust "NN" G-9-152113 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 14.2K | 609K | Nov 1994 – Aug 2026 |
| Cooley Deep O-8-25828 | Trust Oil Co. only | Truby, SW. (Ellenburger) | Jones | 1 | 14.1K | 4.28K | by Jan 1993 – Dec 2000 |
| Stewart Trust O-14-6831 | Burk Royalty Co., Ltd. only | Panhandle Hutchinson County Fld. | Hutchinson | 2 | 14.1K | 344K | by Jan 1993 – Sep 2020 |
| Schreiner Ranch Trust II G-2-161355 | Sandel Operating Company only | Limes (Wilcox F-2) | Live Oak | 1 | 14K | 362K | Jun 1996 – Nov 2013 |
| Carruth, E.B. Jr. Trust et Al G-4-151184 | Cordele Development Corporation only | Boyle, E. (3500) | Starr | 1 | 14K | 195K | Mar 1994 – May 2001 |
| Lee, C. W. G-6-15983 | Long Trusts, The only | Danville (TP-CV Cons.) | Rusk | 1 | 13.9K | 2.14M | by Jan 1993 – Jul 2026 |
| Carruth, E.B. Jr, Trust et Al O-4-13034 | Orphan Wells, LLC only | Boyle, E. (3500) | Starr | 1 | 13.9K | 7.65K | Jun 2001 – Sep 2011 |
| Armour Trust et Al G-3-260044 | Hilcorp Energy Company only | Phase Four (9560 Yegua) | Wharton | 1 | 13.8K | 360K | Jul 2010 – Jun 2016 |
| Ellington Trust O-6-12372 | Newton Corp.,the only | Lake Texarkna (Travis Peak) | Cass | 1 | 13.8K | 22 | by Jan 1993 – Jun 1998 |
| Mobil-City of Kilgore O-6-13087 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 13.7K | 93 | by Jan 1993 – Jun 2017 |
| CML Trust O-3-28098 | MB Energy, LLC only | Shanghai (5600 Frio) | Wharton | 1 | 13.7K | 10.9K | Jan 2023 – Jan 2025 |
| Cranz Trust G-3-163590 | Jamex, Inc. only | Chesterville, N. (Pack) | Colorado | 1 | 13.6K | 946K | Apr 1997 – Jul 2026 |
| Boston Texas Land & Trust G-4-52536 | Merit Energy Company only | Jeffress, N (Vksbg, LO) | Hidalgo | 1 | 13.5K | 1.17M | by Jan 1993 – Aug 2026 |
| Johnson Trusts A O-5-4139 | Proven Natural Resources LLC only | Aguila Vado (Eagleford) | Grimes | 1 | 13.5K | 143K | Apr 2013 – Jul 2026 |
| Cole Trust Stony G-13-186338 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 13.4K | 537K | Nov 2001 – Aug 2026 |
| Langtry-Shirley Trust O-2-11427 | Britanco, L.L.C. only | Helm (Pettus) | Bee | 1 | 13.4K | 0 | Feb 2018 – Aug 2026 |
| Treadwell Trust -19-B O-9-17617 | Boaz Energy II Operating, LLC only | Fort McKavitt, N. (Canyon) | Schleicher | 2 | 13.4K | 121K | Oct 2011 – Jun 2018 |
| Flowers Trust G-14-36236 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 13.4K | 840K | by Jan 1993 – Apr 2016 |
| Iowa Realty Trust O-10-36570 | Moonlite Oil & Gas Company only | Pecos Valley (Wichita-Albany) | Pecos | 1 | 13.4K | 148K | Jan 2001 – Aug 2026 |
| Guitar Trust Estate O-10-38418 | Free Rein Operating LLC only | Moore | Howard | 2 | 13.4K | 0 | Sep 2007 – Aug 2026 |
| McFaddin Trust O-3-27426 | Vestige Energy, LLC only | French Island (Marg 1) | Jefferson | 1 | 13.3K | 0 | Oct 2018 – Jun 2026 |
| Dyer, A. E. Trust O-8-6644 | Tracker Mineral only | Colonel (Fry Sand) | Callahan | 2 | 13.3K | 70 | by Jan 1993 – May 2016 |
| Flowers Trust G-14-247017 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 13.3K | 857K | Sep 2008 – Aug 2026 |
| Buckler, Walker Trust O-8-6659 | Sojourner Drilling Corporation only | V. G. (Gardner) | Shackelford | 1 | 13.3K | 68.3K | by Jan 1993 – Jun 2018 |
| Letha Jacoby Trust O-9-15321 | Otex LLC only | Wilhelm Lane (Hope Lime) | Menard | 1 | 13.3K | 0 | Dec 2002 – Aug 2026 |
| Fossil Wildman Trust Unit No. 2 O-5-3942 | Contrast Energy, LLC only | Hilltop Resort (Woodbine) | Leon | 1 | 13.3K | 909 | Jan 2011 – Jan 2013 |
| Campbell Ranch -26- O-10-31966 | Rust Oil Corp. only | Elwanda (Yates) | Winkler | 2 | 13.3K | 1.38K | by Jan 1993 – Aug 2026 |
| Kincaid, A. R. Trust "D" G-9-138267 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 13.3K | 988K | by Jan 1993 – Aug 2026 |
| Kincaid, A. R. Trust G-9-132616 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 13.2K | 1.17M | by Jan 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-248428 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.2K | 1.29M | Mar 2009 – Aug 2026 |
| Bruni Mineral Trust G-4-157551 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 13.2K | 4.4M | Mar 1996 – Aug 2026 |
| Hays Trust O-14-4938 | Sandridge Expl. and Prod., LLC only | Panhandle Carson County Field | Carson | 8 | 13.2K | 171K | by Jan 1993 – Sep 2011 |
| West Ranch G-10-186743 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13.2K | 8.75M | Dec 2001 – Jun 2025 |
| Mitchell "32" G-9-165859 | BRP Energy, LLC only | Pakenham (Thrusted) | Terrell | 1 | 13.1K | 6.81M | Nov 1997 – Apr 2026 |
| Cowden RANCH"6 HG" O-10-37002 | Rust Oil Corp. only | Harper (Glorieta) | Ector | 1 | 13.1K | 1.38K | Dec 2002 – Nov 2021 |
| James Trust G-1-279455 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 13.1K | 3.85M | Jul 2015 – Aug 2026 |