| Duderstadt Trust 01 G-2-266387 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 19.7K | 1.07M | Sep 2011 – Aug 2026 |
| Mitchell 2 G-9-159366 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 19.6K | 1.38M | Apr 1996 – Aug 2026 |
| Bruni Mineral Trust G-4-153506 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 19.6K | 1.25M | Mar 1995 – Aug 2026 |
| Anderson Trust Unit G-13-273307 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 19.4K | 1.74M | Nov 2010 – Aug 2026 |
| Rustler Hills 18 G-10-277516 | Conocophillips Company only | Sandbar (Bone Spring) | Reeves | 1 | 19.3K | 963K | Dec 2013 – Oct 2022 |
| Slaughter, E. L. Trust et Al O-10-23403 | Roff Operating Company, LLC only | Sulphur Draw (Dean 8790) | Martin | 1 | 19.2K | 22K | by Jan 1993 – Aug 2012 |
| Boston Texas Land & Trust G-4-272980 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 19.1K | 883K | May 2014 – Aug 2026 |
| USA Trust G-13-248091 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 19K | 1.42M | Apr 2009 – Aug 2026 |
| James Trust G-1-279457 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 19K | 4.64M | Jul 2015 – Aug 2026 |
| University 5 G-9-164180 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 18.9K | 598K | Nov 1996 – Aug 2026 |
| Oldham Trust 38 O-10-47056 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 18.9K | 82.6K | Nov 2014 – Jan 2020 |
| Mitchell, Alex 1 G-9-172854 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 18.8K | 512K | Feb 1999 – Aug 2026 |
| Dusek, F. J. Trust G-4-174028 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 18.8K | 911K | Aug 1999 – Sep 2017 |
| Flowers Trust "A" G-14-170707 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 18.8K | 1.26M | Jul 1998 – Aug 2026 |
| Boston Texas Land & Trust G-4-286358 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.8K | 2.91M | Apr 2019 – Aug 2026 |
| Alexander Trust O-13-32982 | Legacy Exploration, LLC I only | Dillard, SE. (Ellenburger) | Jack | 1 | 18.8K | 20.3K | Aug 2014 – Jun 2022 |
| Watkins Scholarship Trust O-6-15654 | Sabine Oil & Gas Corporation only | Oak Hill (Travis Peak) | Rusk | 2 | 18.7K | 70.5K | Jan 2019 – Jul 2020 |
| Goss Trust O-3-23342 | Westport Oil and Gas Company, LP only | Iola (Georgetown) | Brazos | 1 | 18.7K | 692K | Sep 1997 – Oct 2002 |
| Iowa Realty Trust O-10-27136 | Olsen Energy Inc. only | Pecos Valley, S. (Devonian) | Pecos | 1 | 18.7K | 86.4K | by Jan 1993 – Aug 2016 |
| Lands, T. P. Trust -D- O-10-17654 | Aghorn Operating, Inc. only | Lawson (San Andres) | Ector | 4 | 18.6K | 50.7K | by Jan 1993 – Jan 2015 |
| Finch Family Trust GU G-3-280753 | Hilcorp Energy Company only | Ora (13400 Sand) | Chambers | 1 | 18.5K | 107K | Feb 2016 – Nov 2017 |
| Boston Texas Land & Trust G-4-267196 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.5K | 1.47M | Apr 2012 – Aug 2026 |
| Kincaid, A. R. Trust G-9-91264 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 18.5K | 770K | by Jan 1993 – Aug 2026 |
| James Trust G-1-279454 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 18.4K | 4.65M | Jul 2015 – Aug 2026 |
| Weyman 14 O-10-34340 | Hendon Wm E. Jr. Rev Lvng Trust only | Powell (Penn) | Glasscock | 1 | 18.3K | 73.4K | Nov 1994 – Aug 2018 |
| Roberts Trust O-10-42989 | WTG Exploration only | Spraberry (Trend Area) | Dawson | 1 | 18.3K | 3.81K | Sep 2012 – Mar 2023 |
| Trust "139" O-8-27480 | Van Operating, Ltd. only | Hillview (Miss) | Shackelford | 1 | 18.3K | 25K | Feb 1995 – Sep 1999 |
| Walker-Buckler Trust 2B O-8-27808 | Beehive Operating, LLC only | Bs&t (Miss.) | Shackelford | 1 | 18.3K | 20.3K | Jan 1996 – Nov 2012 |
| James Trust G-1-279012 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 18.2K | 3.38M | Jun 2015 – Aug 2026 |
| Rust-Dean Unit O-3-14164 | Sage Energy Company only | Giddings (Austin Chalk-3) | Burleson | 2 | 18.2K | 196K | by Jan 1993 – Sep 1996 |
| Smith O-6-12810 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 18.2K | 67.6K | by Jan 1993 – Sep 2001 |
| C-Bruni Mineral Trust G-4-151285 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 18.2K | 1.76M | Sep 1994 – Aug 2026 |
| Nelson Trust G-3-142921 | Greenhill Petroleum Corporation only | Numbat (LY-6 Cook Mountain) | Liberty | 1 | 18.1K | 72K | by Jan 1993 – Dec 1994 |
| R & S Family Trust 8 O-10-44773 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 18.1K | 74.2K | Jan 2014 – Aug 2026 |
| JBG Childrens 1991 Trust C G-3-190938 | Lone Wolf Operating Company only | Brookshire Dome (Miocene 5-1C) | Waller | 1 | 18.1K | 26.5K | Jul 2002 – Jan 2003 |
| Colter Trust G-9-183340 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 17.9K | 230K | May 2001 – Dec 2023 |
| Smith, Mary Carol Trust G-1-193 | Verdun Oil & Gas LLC only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 17.9K | 1.94M | by Jan 1993 – Jan 2016 |
| Dearen O-13-25432 | JF Trust only | Joy (Strawn) | Clay | 1 | 17.8K | 40 | by Jan 1993 – Aug 2016 |
| Martin Trust O-8-27065 | Midland Oil and Gas, Inc. only | Frankirk, SW. (Canyon Reef) | Stonewall | 1 | 17.7K | 63.6K | Dec 1993 – May 1997 |
| James Trust G-1-279296 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.7K | 4.15M | Jun 2015 – Aug 2026 |
| Garza Zamora Energy Trust G-4-222722 | Merit Energy Company only | Flores (Vicksburg, Lower) | Hidalgo | 1 | 17.7K | 1.17M | Jul 2006 – Aug 2026 |
| Amacker Trust 36 O-9-5486 | Chesapeake Operating, Inc. only | Tippett (Leonard, Lower) | Crockett | 1 | 17.6K | 367K | by Jan 1993 – Sep 2004 |
| James Trust G-1-287462 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.6K | 7.2M | Jul 2019 – Aug 2026 |
| Ansco Trust et Al O-1-8578 | NXS Oilfield Services, LLC only | Jourdanton (Recklaw) | Atascosa | 7 | 17.6K | 28 | by Jan 1993 – Dec 2017 |
| Henderson Trust "NN" G-9-143882 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 17.5K | 1.27M | by Jan 1993 – Aug 2026 |
| Vera Trust G-4-231273 | Eliteenergyholdings LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 17.5K | 631K | Sep 2007 – Feb 2025 |
| Henderson Trust "NN" G-9-160699 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 17.5K | 597K | Oct 1996 – Aug 2026 |
| Critz O-3-15724 | Ward Living Trust only | Giddings (Austin Chalk-3) | Lee | 1 | 17.4K | 46 | by Jan 1993 – Nov 2013 |
| Trust "139" Lease O-8-28691 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 17.4K | 30.7K | Oct 1999 – Dec 2002 |
| Talbutt Trust G-1-291188 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 17.4K | 123K | Jan 2019 – Sep 2024 |