| Loving Estate O-13-11587 | Brightman Family Trust only | Bryson, East | Jack | 1 | 10.8K | 19 | by Jan 1993 – Jun 1996 |
| Centerre Bank Trustee O-10-42237 | Boaz Energy II Operating, LLC only | Dimmitt (Delaware Cons) | Loving | 1 | 10.8K | 7.31K | Oct 2012 – Apr 2019 |
| J.P. Jones & Fern Jones Trust O-8-32157 | Flint Rock Resources Mgmnt, Inc. only | Coleman County Regular | Coleman | 3 | 10.7K | 0 | May 2017 – Jul 2026 |
| Huebner Trusts O-3-25859 | Red Wolf Oil Company, Inc. only | Hamman (9500 Frio) | Matagorda | 1 | 10.7K | 69.3K | Mar 2011 – Aug 2013 |
| Carson, H. Trustee O-9-5982 | Hilcorp Energy Company only | Christi (Canyon 6800) | Irion | 5 | 10.7K | 186K | by Jan 1993 – Aug 2026 |
| Rustler Hills 18 O-10-43144 | Conocophillips Company only | Rustler Hills | Reeves | 1 | 10.7K | 682K | Oct 2012 – Nov 2013 |
| Brittingham Trust "B" O-8-14284 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 2 | 10.6K | 19 | by Jan 1993 – May 2009 |
| Foster, E. O-13-16917 | Horansky Burrell Revocable Trust only | Wichita County Regular | Wichita | 1 | 10.6K | 20 | by Jan 1993 – Jul 2026 |
| Rust-Weishuhn O-9-12011 | Atlas Operating LLC only | FWB (Canyon Sand) | Tom Green | 3 | 10.5K | 7.33K | by Jan 1993 – Jan 2012 |
| Alexander Trust O-13-33724 | Legacy Exploration, LLC I only | Dillard, SE. (Bryson) | Jack | 1 | 10.4K | 792 | Feb 2017 – Oct 2022 |
| Trust O-14-6430 | Unit Petroleum Company only | Sixty Six (Morrow, Upper) | Hemphill | 1 | 10.4K | 980K | by Jan 1993 – Dec 1998 |
| Flache Trust O-8-29864 | Bell, Johnny Inc. only | Truby (Strawn) | Jones | 1 | 10.4K | 22.9K | Dec 2006 – Oct 2016 |
| CML Mgmt Trust O-3-27873 | Inland Ocean, Inc. only | Hyatt, South (Wilcox 9,400) | Wharton | 1 | 10.2K | 93.4K | Feb 2020 – Nov 2020 |
| Spira, Melvin Trustee O-3-6989 | Silverbrook Operating, LLC only | Big Creek | Fort Bend | 4 | 10.1K | 79 | by Jan 1993 – Dec 2018 |
| Henderson Trust "NN" O-9-13803 | Enron Oil & Gas Company only | Ozona (Canyon Sand, Oil) | Crockett | 1 | 10.1K | 128K | Dec 1994 – Jul 1996 |
| Guitar Trust Estate O-10-8660 | P4 Operating, LLC only | Varel (San Andres) | Howard | 1 | 10K | 226 | by Jan 1993 – Mar 2013 |
| Fields & Bowers O-13-24903 | Bayer, Frances E. Rev Liv Trust only | Cooke County Regular | Cooke | 2 | 9.99K | 22 | by Jan 1993 – Aug 2015 |
| Hefte, Mary Tom Trust O-4-9866 | Harper Hefte, Inc. only | Agua Dulce (6240) | Nueces | 1 | 9.94K | 49K | by Jan 1993 – May 1999 |
| Richardson Trust "16" O-13-19891 | Guidance Oil DEVELOPERS,INC.(1) only | Archer County Regular | Archer | 4 | 9.79K | 201 | Mar 1993 – Aug 2026 |
| Moody Estate Trustee O-3-28301 | Sandpoint Texas LLC only | Sweetwater Lake (Miocene D-5) | Galveston | 1 | 9.66K | 0 | May 2026 – Aug 2026 |
| Reed Trust O-13-34160 | Finnell Oil Services, Inc. only | -TT- (Conglomerate) | Wilbarger | 2 | 9.63K | 0 | Jan 2023 – Aug 2026 |
| Oldham Trust 27 O-10-47122 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.48K | 15.5K | Feb 2015 – Jan 2020 |
| Barth, Louis L., Trustee O-13-6446 | Steinman, Frank C. only | Wilbarger County Regular | Wilbarger | 1 | 9.46K | 99 | by Jan 1993 – Aug 2026 |
| Hoefs Trust O-10-62481 | Crescent Energy Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 9.42K | 6.64K | Dec 2024 – Jul 2026 |
| Waggoner, W. T. Estate -Peter- O-13-8616 | Aaa Oil Trust only | Dill, East (Dyson) | Wilbarger | 10 | 9.39K | 9 | by Jan 1993 – Jul 2010 |
| Rust, Doris O-3-14339 | Sage Energy Company only | Giddings (Austin Chalk-3) | Burleson | 1 | 9.39K | 61.2K | by Jan 1993 – Aug 1996 |
| CB 104 O-9-14279 | Texas Energy Trust Company only | Spraberry (Trend Area) | Reagan | 1 | 9.37K | 272K | Nov 1995 – Apr 2009 |
| Carruth, E.B. Jr. Trust et Al O-4-12225 | Cordele Development Corporation only | Boyle, E. (3500) | Starr | 1 | 9.36K | 11 | Apr 1993 – Feb 1994 |
| Fite, W. P. Unit #2 O-6-11321 | Long Trusts, The only | Henderson South (Travis Peak -B- | Rusk | 1 | 9.26K | 47.9K | by Jan 1993 – Mar 2006 |
| Hooker Trust O-8-8378 | Herencia Operating LLC only | Shackelford County Regular | Shackelford | 35 | 9.21K | 10 | by Jan 1993 – Jun 1998 |
| Trustee #2 O-4-12808 | Santa Rita Holdings, LLC only | Amore (Vicksburg 5750) | Starr | 1 | 9.11K | 26.2K | Dec 1998 – May 2002 |
| Walker-Buckler Trust "B" O-8-23564 | Ruthson Energy, Inc. only | McCoy (Miss.) | Throckmorton | 1 | 9.11K | 88 | by Jan 1993 – May 2000 |
| L.P. Trammel Trust O-3-24505 | Devon Energy Production Co, L.P. only | Leggett, W. (Woodbine) | Polk | 1 | 9.09K | 63.5K | Jan 2004 – Aug 2004 |
| Iowa Realty Trust O-10-4716 | Molder, Tom only | Pecos Valley (High Gravity) | Pecos | 3 | 9.02K | 21 | by Jan 1993 – Apr 2013 |
| First National Trust O-14-4495 | Courson Oil & Gas, Inc. only | Ellis Ranch (Cleveland, UP) | Ochiltree | 2 | 8.95K | 229K | by Jan 1993 – Aug 2017 |
| Iowa Realty Trust 123 "B" O-10-23886 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 2 | 8.94K | 3.81K | by Jan 1993 – Dec 2010 |
| Barcus, W. S. O-13-2207 | Bayer, Frances E. Rev Liv Trust only | Cooke County Regular | Cooke | 4 | 8.9K | 20 | by Jan 1993 – Jan 2016 |
| Alliance Trust O-13-21612 | Gen-Sher L.L.P. only | Henrietta, SE. (Congl.) | Clay | 1 | 8.88K | 22 | by Jan 1993 – Jan 2016 |
| Rust Estate O-9-8225 | Pearl, Bill H. Productions, Inc. only | Bald Eagle (Ellen) | Tom Green | 1 | 8.75K | 340 | by Jan 1993 – Mar 1998 |
| Downie Ranch -6- O-10-39179 | Longfellow Energy, LP only | Thistle (Overthrust) | Pecos | 3 | 8.74K | 10.8K | May 2008 – Aug 2026 |
| Oldham Trust 27 O-10-45575 | Highpeak Energy Holdings, LLC only | Big Spring (Strawn) | Howard | 1 | 8.69K | 37.5K | May 2014 – Jan 2020 |
| Jones, Ray O-8-22735 | Trustar Operating Company Inc. only | Brown County Regular | Brown | 14 | 8.67K | 9.25K | by Jan 1993 – Sep 2019 |
| Wilson Trust O-3-22986 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou (Frio, First) | Brazoria | 1 | 8.65K | 0 | Jun 1996 – May 1997 |
| Worth O-13-3356 | Beisch, Rusty only | Jack County Regular | Jack | 27 | 8.65K | 106 | by Jan 1993 – May 2006 |
| Downie Ranch -5- O-10-39177 | Longfellow Energy, LP only | Thistle (Overthrust) | Pecos | 3 | 8.61K | 3.03K | May 2008 – May 2023 |
| Andrews, Robert O. Trust O-13-24331 | Gerry-Mac Oil, Inc. only | Young County Regular | Young | 6 | 8.59K | 35 | by Jan 1993 – Aug 2026 |
| Midland National Bank Trustee O-10-23642 | Texas Investments only | Spraberry (Trend Area) | Glasscock | 1 | 8.56K | 845 | by Jan 1993 – Nov 2004 |
| Semmes Trust, et al "906" O-4-13069 | Conoco Inc. only | Rincon (90 Vicksburg 906-4) | Starr | 1 | 8.52K | 108K | Aug 2001 – Nov 2001 |
| Amacker-Trust 37 O-9-5728 | Apv McCamey LLC only | Tippett (Leonard, Lower) | Crockett | 1 | 8.48K | 123K | by Jan 1993 – Jan 2013 |
| Wilson, John H. Trustee -D- O-10-25385 | Sanco Operating Company only | Rhoda Walker (Canyon 5900) | Ward | 5 | 8.38K | 1.39K | by Jan 1993 – Oct 2005 |