| Flowers Trust "A" G-14-159628 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 38.2K | 1.37M | Jul 1996 – Aug 2026 |
| Hager Trust 616 G-14-280902 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 38.2K | 492K | Jan 2015 – Oct 2021 |
| C-Bruni Mineral Trust G-4-158139 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38K | 4.68M | Mar 1996 – Aug 2026 |
| C- Bruni Mineral Trust G-4-141443 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 38K | 6.3M | by Jan 1993 – Aug 2026 |
| T. P. Land & Trust, B. S. O-10-6222 | Grayrock Energy II, LLC only | Snyder | Howard | 6 | 38K | 1 | by Jan 1993 – Aug 2026 |
| University #36-2 G-9-160025 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 38K | 1.85M | Aug 1996 – Aug 2026 |
| Dusek, F. J. Trust G-4-171579 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 38K | 2.67M | Nov 1998 – May 2024 |
| C-Bruni Mineral Trust G-4-143478 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 37.9K | 4.22M | by Jan 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-215084 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 37.5K | 2.5M | Dec 2005 – Aug 2026 |
| Centerre Bank Trustee O-10-31858 | Propel Energy, LLC only | Pinal Dome (Delaware) | Loving | 1 | 37.4K | 122K | by Jan 1993 – Sep 2012 |
| Hudgins Trust O-13-34050 | Tatanka Operating, LLC only | Southmayd (Pennsylvanian 6600) | Grayson | 1 | 37.3K | 97.1K | Aug 2021 – Aug 2026 |
| I R T /Iowa Realty Trust/ O-10-4785 | Vidonia Oil LLC only | Pecos Valley (Low Gravity) | Pecos | 3 | 37.2K | 146 | by Jan 1993 – Apr 2021 |
| Liberty Trust 2 O-10-41072 | New Height Energy, LLC only | Spraberry (Trend Area) | Martin | 1 | 37.1K | 53.7K | Feb 2011 – May 2026 |
| Brooks, Emma, Estate O-6-3349 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 36.9K | 1.61K | by Jan 1993 – Jul 2026 |
| Blackwell Trust Gas Unit G-2-212281 | Mosley Oil &gas Inc only | Friar Ranch, S. (Consolidated) | De Witt | 1 | 36.6K | 591K | Jul 2005 – Apr 2022 |
| Schreiner Ranch Trust II G-2-141656 | Sandel Operating Company only | Oakville (Wilcox Cons.) | Live Oak | 1 | 36.6K | 913K | by Jan 1993 – Aug 2026 |
| Thompson Unit O-3-11549 | Long Trusts, The only | Daboval (Frio 5180) | Wharton | 1 | 36.5K | 43 | by Jan 1993 – Jun 2009 |
| Boston Texas Land & Trust G-4-229338 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 36.5K | 2.94M | Jun 2007 – Aug 2026 |
| Martin Trust G-14-265532 | BE Anadarko II, LLC only | Roberts Co. (St. Louis) | Roberts | 1 | 36.4K | 3.09M | Sep 2011 – Aug 2026 |
| Dusek, F. J. Trust G-4-171697 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 36.4K | 3.52M | Dec 1998 – Aug 2026 |
| Iowa Realty Trust -Mc- O-10-4806 | Hard Rock O&G only | Pecos Valley (Low Gravity) | Pecos | 13 | 36.1K | 20 | Mar 1995 – Jun 2023 |
| Caswell Trust O-3-13289 | Saratoga Production Company LLC only | Saratoga | Hardin | 3 | 36.1K | 33 | by Jan 1993 – Apr 2021 |
| Thornton, Bertie Trust O-8-26027 | Graystone Energy Corporation only | Taylor County Regular | Taylor | 2 | 36.1K | 57 | by Jan 1993 – Feb 2011 |
| Boston Texas Land & Trust G-4-284804 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 36K | 1.08M | Apr 2018 – Aug 2026 |
| Trust McCoy "B" O-8-27531 | Van Operating, Ltd. only | Florence (Miss.) | Throckmorton | 1 | 35.9K | 12.9K | May 1995 – Sep 1999 |
| Smith, Mary Carol Trust Unit G-1-119022 | Verdun Oil & Gas LLC only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 35.7K | 2.98M | by Jan 1993 – Aug 2026 |
| Jones Trust 272 O-14-7732 | EOG Resources, Inc. only | Lipscomb (Cleveland) | Lipscomb | 1 | 35.7K | 146K | Feb 2007 – Mar 2017 |
| Brown Trust '10' O-10-44967 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 1 | 35.7K | 37.3K | Mar 2014 – Apr 2026 |
| Dusek, F. J. Trust G-4-175101 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 35.6K | 3.12M | Oct 1999 – Aug 2026 |
| Freeman, Odell "A" O-8-18039 | Rust Oil Corp. only | Jay (Strawn) | Jones | 2 | 35.5K | 24.1K | by Jan 1993 – Mar 2010 |
| Hughes Royalty Trust O-6-15747 | Petro-Chem Operating Company,inc only | Nogo (Rodessa) | Rusk | 1 | 35.4K | 0 | Aug 2019 – Aug 2026 |
| JBG Childrens 1991 Trust C O-3-24305 | Lone Wolf Operating Company only | Brookshire Dome (Miocene 5-1C) | Waller | 1 | 35.3K | 4.48K | Feb 2003 – Feb 2004 |
| Standard Trust Co. O-3-9216 | McA Petroleum Corporation only | Muldoon, SW. (Drenner) | Fayette | 3 | 35.2K | 2 | Dec 1998 – Aug 2026 |
| Hooker Trust O-8-26526 | Lariat Land & Exploration, Inc. only | Jones County Regular | Jones | 2 | 35.2K | 140 | by Jan 1993 – Aug 2026 |
| Swenson Trust O-11-68522 | Henson Exploration, L.P. only | Spur, South (Croton Lime) | Dickens | 1 | 35K | 0 | Nov 2002 – Sep 2019 |
| Sabine Royalty Trust G-6-264815 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 35K | 2.64M | Feb 2012 – Aug 2026 |
| C-Bruni Mineral Trust G-4-154452 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 34.9K | 4.29M | May 1995 – Jun 2013 |
| C-Bruni Mineral Trust G-4-147608 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 34.6K | 4.28M | Dec 1993 – Aug 2026 |
| Huebner Trusts G-3-222737 | Red Wolf Oil Company, Inc. only | Huebner ( 9,960 S.) | Matagorda | 1 | 34.3K | 1.09M | Mar 2007 – Nov 2010 |
| Boston Texas Land & Trust G-4-97088 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 34.3K | 1.74M | by Jan 1993 – Aug 2019 |
| Yost Trust O-10-29610 | PDC Permian, Inc. only | Reeves-Block 4 (del. 4430) | Reeves | 1 | 34.1K | 85.6K | Jan 2005 – Nov 2019 |
| Dusek, F. J. Trust G-4-117878 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 34.1K | 1.6M | by Jan 1993 – May 2006 |
| Hudson-Morley Trust O-11-68900 | Joplin Oil Co., Inc. only | Spivey (San Andres) | Yoakum | 1 | 34K | 0 | Jan 2006 – Aug 2026 |
| Kentucky Trust 984 O-8-31674 | S.B. Street Operating, Inc. only | Lueders, S. (King Sand) | Throckmorton | 1 | 34K | 92.3K | Oct 2014 – Aug 2026 |
| Guitar Trust Estate -F- O-10-8466 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 7 | 33.9K | 31 | by Jan 1993 – Jul 2026 |
| Sam Leathers Trust (Allocation) O-3-26937 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 1 | 33.8K | 74.1K | Jun 2013 – Jul 2018 |
| Dusek, F. J. Trust G-4-172511 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 33.7K | 2M | Feb 1999 – Aug 2026 |
| Family Land Heritage Trust O-6-13704 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 33.5K | 451K | Aug 1997 – Jan 2008 |
| Denson Trust -E- O-14-4288 | Large Operating LLC only | Panhandle Moore County Field | Moore | 3 | 33.4K | 11 | Jun 1994 – Jul 2026 |
| Schreiner Ranch Trust No. 2 G-2-104214 | McCombs Energy, Ltd. only | Limes (Wilcox 9900) | Live Oak | 1 | 33.2K | 1.19M | by Jan 1993 – Mar 2008 |