| Mitchell 8 G-9-251993 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 25.4K | 3.43M | Apr 2009 – Apr 2025 |
| Davis, Elsie F. Trustee O-3-20985 | Gcows Operating LLC only | Manvel (Miocene -B-, Upper) | Brazoria | 1 | 25.4K | 9.14K | by Jan 1993 – Feb 2004 |
| Alliance Trust Co. O-11-62817 | Hardin Energy Co., Inc. only | Sharon Ridge (Clear Fork) | Scurry | 2 | 25.2K | 78 | Apr 1993 – Aug 2026 |
| Flowers Trust "A" G-14-158591 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 25.2K | 746K | May 1996 – Aug 2026 |
| Iowa Realty Trust 125 "A" O-10-22689 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 6 | 25.2K | 10.6K | by Jan 1993 – Feb 2017 |
| McGinley Trust O-10-29271 | Griffin Petroleum Company only | Wheat (Cherry Canyon) | Loving | 1 | 24.9K | 29.2K | by Jan 1993 – Nov 2005 |
| James Trust G-1-279209 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 24.9K | 3.84M | Jun 2015 – Aug 2026 |
| Walker-Bucker Trust "B" O-8-27004 | Snyder Drilling Corp. only | Shackelford County Regular | Shackelford | 6 | 24.8K | 53 | Aug 1993 – Aug 2026 |
| Laird, Mack Oil Unit #2 O-6-12232 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 24.7K | 20 | by Jan 1993 – Mar 2024 |
| Boston Texas Land & Trust G-4-276356 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 24.7K | 3.9M | Dec 2014 – Aug 2026 |
| Schreiner Ranch Trust II G-2-147342 | McCombs Energy LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 24.7K | 890K | Oct 1993 – Sep 1996 |
| Boston Texas Land & Trust G-4-269233 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 24.6K | 1.46M | Dec 2012 – Aug 2026 |
| Kincaid, A. R. Trust 'C' O-9-13725 | Epic Permian Operating, LLC only | Ozona (Canyon Sand, Oil) | Crockett | 1 | 24.6K | 280K | Dec 1994 – Jan 2021 |
| James Trust G-1-279013 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 24.5K | 3.94M | Jun 2015 – Aug 2026 |
| Hill, F. S. Trustee G-5-105232 | HRB Operating Company, Inc. only | Winkler, S.(cotton Valley Lime) | Freestone | 1 | 24.5K | 1.32M | by Jan 1993 – Jul 2025 |
| Bruni Mineral Trust G-4-153714 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 24.4K | 4.67M | Apr 1995 – Aug 2026 |
| Tuttle Trust Gas Unit G-2-224131 | PA Prospect LLC only | Tom Long (Lower Wilcox) | Lavaca | 1 | 24.4K | 938K | Oct 2006 – Nov 2012 |
| Brown "B" O-8-28936 | Ram Oil and Gas, Inc. only | Rust Creek (Miss) | Throckmorton | 3 | 24.3K | 0 | Mar 2001 – Sep 2024 |
| West Ranch G-10-249735 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24.3K | 982K | Apr 2008 – Jul 2026 |
| Mills-McGee Trust Unit O-3-23514 | Union Pacific Resources Company only | Giddings (Buda) | Milam | 1 | 24.3K | 48.3K | Mar 1998 – Dec 1998 |
| E.A. Weinheimer-Grady Trust Unit G-3-139930 | Crimson Exploration Inc. only | Alwan (Cook Mountain) | Wharton | 1 | 24.1K | 534K | Jun 1993 – Mar 2005 |
| Schenecker Trust O-10-30086 | Saga Petroleum Corp. only | W W W (Ramsey) | Ward | 3 | 24K | 10.4K | by Jan 1993 – Mar 1998 |
| Bruni Mineral Trust "B" G-4-180562 | Killam Oil Co., Ltd. only | Moritas Creek (8500) | Webb | 1 | 24K | 3.64M | Nov 2000 – Apr 2022 |
| Wakefield Trust O-10-35010 | Endeavor Energy Resources L.P. only | Sweetie Peck (Pennsylvanian) | Upton | 1 | 23.9K | 48.5K | Mar 1996 – Apr 2008 |
| Martin Trust B G-14-129707 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 23.8K | 361K | by Jan 1993 – Nov 2021 |
| Flowers Trust "B" G-14-250154 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 23.8K | 1.18M | Mar 2009 – Aug 2026 |
| Armour Trust, et Al G-3-279821 | Hilcorp Energy Company only | Phase Four (9560 Yegua) | Wharton | 1 | 23.8K | 436K | May 2015 – Jan 2017 |
| Bruni Mineral Trust "B" G-4-248708 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 23.8K | 3.4M | Mar 2009 – Aug 2026 |
| James Trust G-1-279004 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 23.8K | 4.12M | Jun 2015 – Aug 2026 |
| TP Land Trust "23" O-10-49460 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Midland | 8 | 23.6K | 13.4K | Jan 2018 – Jun 2022 |
| Guaranty Title & Trust G-4-198135 | Pine Island Operating, L.L.C. only | Corpus Christi, W (Consolidated) | Nueces | 1 | 23.6K | 1.04M | Oct 2003 – Jun 2010 |
| Guitar Trust Estate -A- O-8-2208 | Beasley Well Service Inc. only | Jones County Regular | Jones | 5 | 23.6K | 68 | by Jan 1993 – Jul 2026 |
| Millhollon Trust O-10-30006 | Reatta Energy, Inc. only | Spraberry (Trend Area) | Martin | 1 | 23.5K | 149K | by Jan 1993 – Aug 2012 |
| Williams Mineral Trust "1" O-8-27031 | Van Operating, Ltd. only | Herr-King (Cross Cut) | Callahan | 2 | 23.5K | 12 | Oct 1993 – Mar 2010 |
| Kincaid, A. R. Trust 'C' G-9-136766 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 23.4K | 1.33M | by Jan 1993 – Aug 2026 |
| Carl, Wm. F. Trustee et al "A" O-4-10016 | Tigel Standard Oil LLC only | Montemayor (5500) | Duval | 4 | 23.3K | 58.1K | by Jan 1993 – Dec 2020 |
| Trust Buster O-10-57236 | Mewbourne Oil Company only | Hoefs T-K (Wolfcamp) | Reeves | 1 | 23.2K | 218K | Feb 2022 – Aug 2026 |
| Davis-Trustee O-14-4610 | Continental Operating Co. only | Horizon (Cleveland) | Ochiltree | 1 | 23.2K | 219 | by Jan 1993 – Apr 2011 |
| Martin Trust O-13-30232 | Gannett Operating LLC only | Minta Wright (Mississippi) | Young | 1 | 23.1K | 12.9K | Nov 2003 – Jan 2012 |
| Stovall, Guy F. Trust G-3-149968 | Viper S.W.D., LLC only | Mott Slough (Yegua) | Wharton | 1 | 23.1K | 441K | Jun 1994 – Sep 2022 |
| Cranz Trust G-3-165211 | Jamex, Inc. only | Chesterville, N. (Pack) | Colorado | 1 | 23.1K | 1.75M | Aug 1997 – Jul 2026 |
| Birdsong O-6-12783 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 2 | 23K | 74.3K | by Jan 1993 – Feb 2025 |
| Fite, W. P. Unit O-6-14585 | Long Trusts, The only | Minden (Travis Peak Cons.) | Rusk | 1 | 22.9K | 47.5K | Apr 2006 – Jul 2026 |
| Garza Zamora Energy Trust G-4-227373 | Merit Energy Company only | Flores (Vicksburg, Lower) | Hidalgo | 1 | 22.9K | 3.47M | May 2007 – Aug 2026 |
| Mauritz, Fred Trust Estate O-2-6804 | Fredco only | Mauritz (6245) | Jackson | 1 | 22.8K | 2.09K | by Jan 1993 – Feb 2008 |
| Rust Unit G-3-294000 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 22.8K | 407K | Mar 2022 – Jul 2026 |
| Cranz Trust 834 G-3-217827 | Jamex, Inc. only | Rexville (Wilcox) | Austin | 1 | 22.7K | 2.27M | May 2006 – Jul 2026 |
| Matthews, Carroll P. Trust G-4-203577 | STS Petroleum LLC only | Agua Dulce (Vicksburg Consl.) | Nueces | 1 | 22.7K | 590K | Aug 2004 – Apr 2006 |
| Shook Trust O-11-65927 | Southwest Royalties, Inc. only | Brahaney, Northwest (Devonian) | Yoakum | 2 | 22.6K | 2.97K | by Jan 1993 – Jul 1995 |
| Kincaid, A. R. Trust 'D' G-9-143658 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 22.5K | 1.12M | Feb 1993 – Aug 2026 |