| Marston, Edgar J. Jr. Trust.-B- O-10-25355 | Nesitor West Texas LLC only | Rhoda Walker (Canyon 5900) | Ward | 2 | 21.1K | 95.3K | by Jan 1993 – Jul 2004 |
| Treadwell Trust -19- O-9-16979 | Boaz Energy II Operating, LLC only | Fort McKavitt, N. (Canyon) | Schleicher | 3 | 21.1K | 172K | Jul 2009 – Aug 2022 |
| Halfmann Trust Unit O-10-41534 | Crescent Energy Operating, LLC only | Garden City, S. (Wolfcamp) | Glasscock | 1 | 20.8K | 215K | Feb 2011 – Feb 2021 |
| Trust Clifton Unit O-8-27663 | Van Operating, Ltd. only | Clifton (Miss.) | Shackelford | 1 | 20.8K | 45.5K | Jun 1995 – Jun 2001 |
| Oldham Trust 26 O-10-47055 | Surge Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 20.7K | 15.7K | Jan 2015 – Feb 2019 |
| Lane Trust -B- O-10-49971 | Diamondback E&P LLC only | Spraberry (Trend Area) | Glasscock | 2 | 20.7K | 73.1K | Apr 2018 – Jun 2026 |
| Seale, F. L., Trust O-8-10738 | CDJ Oil Company, LLC only | Callahan County Regular | Callahan | 14 | 20.4K | 142 | by Jan 1993 – Aug 2026 |
| Susan Davis Trust O-13-26974 | Kathy Ann Oil Operations, LLC only | Young County Regular | Young | 2 | 20.2K | 21 | by Jan 1993 – Apr 2017 |
| JBG Childrens 1991 Trust "D" O-3-25109 | Iron Jaw Operating LLC only | Brookshire | Waller | 1 | 20.1K | 0 | Apr 2007 – Mar 2025 |
| Smith Trust O-6-15417 | Rose City Resources, LLC only | Whelan (Pettit) | Harrison | 1 | 19.9K | 0 | Dec 2014 – Aug 2026 |
| Flache Trust O-8-27773 | Bell, Johnny Inc. only | Truby (Palo Pinto) | Jones | 1 | 19.9K | 11.8K | Jan 1996 – Oct 2006 |
| Cowden Ranch -6- O-10-32583 | Rust Oil Corp. only | Cowden (Penn Detrital) | Ector | 1 | 19.8K | 21.6K | by Jan 1993 – Dec 2013 |
| Trainer Trust 16 O-10-38309 | Whiting Oil and Gas Corporation only | Athey (Wolfcamp 10900) | Pecos | 1 | 19.7K | 40.1K | Dec 2006 – Apr 2011 |
| 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 |
| Oldham Trust 38 O-10-47056 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 18.9K | 82.6K | Nov 2014 – Jan 2020 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Amacker Trust 36 O-9-5486 | Chesapeake Operating, Inc. only | Tippett (Leonard, Lower) | Crockett | 1 | 17.6K | 367K | by Jan 1993 – Sep 2004 |
| Ansco Trust et Al O-1-8578 | NXS Oilfield Services, LLC only | Jourdanton (Recklaw) | Atascosa | 7 | 17.6K | 28 | by Jan 1993 – Dec 2017 |
| 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 |
| Kincaid, A. R. Trust "C" O-9-15837 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 3 | 17.3K | 208K | Sep 2005 – Aug 2026 |
| Zengerle, Ester et Al O-2-5099 | Long Trusts, The only | Anna Barre (Yegua 4900) | De Witt | 2 | 17.1K | 74 | by Jan 1993 – Dec 2008 |
| VS Trust O-10-43616 | OXY USA Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 17K | 43.8K | Sep 2012 – Jan 2019 |
| Wood Family Memorial Trust O-2-8675 | Pure Resources, L.P. only | Wood High (Elsie) | Victoria | 1 | 16.9K | 0 | Oct 2001 – Mar 2003 |
| Rustler Hills 7 O-10-43936 | Conocophillips Company only | Sandbar (Bone Spring) | Reeves | 2 | 16.7K | 154K | Sep 2012 – Feb 2014 |
| Lavelle O-8-30641 | Pony Express Corporate Trust only | Emily (Ellenburger) | Coleman | 1 | 16.4K | 104K | May 2010 – Jun 2026 |
| McClintic Trust O-10-35865 | Endeavor Energy Resources L.P. only | Midwest (Spraberry-Dean) | Midland | 1 | 16.3K | 19.8K | Jun 1998 – Oct 1999 |
| Douglas Mineral Trust O-13-14556 | Syntax Energy Corporation only | Wichita County Regular | Wichita | 3 | 16.2K | 139 | by Jan 1993 – Aug 2026 |
| Teel, Betty Trust O-14-4046 | SNW Operating Company only | Panhandle (Red Cave) | Potter | 2 | 16.2K | 1.74K | by Jan 1993 – Feb 2021 |
| JBG Childrens 1991 Trust "A" O-3-25795 | Iron Jaw Operating LLC only | Brookshire | Waller | 1 | 16.1K | 0 | Nov 2011 – Mar 2025 |
| Martin Trust O-14-7690 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 16K | 35.6K | Oct 2006 – Oct 2020 |
| Ellwood, W. L. Trust -C- O-10-26553 | Crego Exploration only | Silver Tank (Miss.) | Mitchell | 1 | 15.9K | 350 | by Jan 1993 – Dec 2020 |
| Kincaid, A.R. Trust O-9-15360 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 2 | 15.8K | 346K | Apr 2002 – Aug 2026 |
| Aycock Trust O-14-7078 | Courson Oil & Gas, Inc. only | At (Morrow, Upper) | Sherman | 1 | 15.7K | 34.3K | Jan 1996 – Aug 2003 |
| Thornton Trust 4-60 O-10-42880 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 2 | 15.6K | 100K | May 2011 – Feb 2026 |
| Summers Trust O-3-20250 | Trivista Operating LLC only | Serbin (Taylor Sand) | Bastrop | 1 | 15.5K | 60K | by Jan 1993 – Sep 2019 |
| Albert Trust O-11-17521 | Coastal Plains Energy, Inc. only | Ackerly (Dean Sand) | Martin | 1 | 15.5K | 42.8K | by Jan 1993 – Aug 2026 |