| Wardner, G. P., Trustee -E- O-4-5121 | Poor Boy Oilfield Service only | Gregg Wood (1420 Sand) | Starr | 1 | 2.74K | 40 | by Jan 1993 – Apr 1997 |
| Expando O-13-27583 | Strange, Joyce Marital Trust only | Archer County Regular | Archer | 4 | 2.74K | 21 | by Jan 1993 – Oct 1997 |
| Frost Trust 9 G-4-182682 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 2.74K | 2.49M | Apr 2001 – Aug 2026 |
| St. Andrew G-3-174467 | Ventex Operating Corp. only | Rusty (14,600) | Matagorda | 1 | 2.74K | 166K | Mar 1999 – Jul 2005 |
| Stewart Trust State G-4-270344 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 2.73K | 2.16M | Mar 2013 – Aug 2026 |
| Begert Trust 32 G-14-253338 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 2.73K | 379K | Mar 2009 – Aug 2020 |
| Guitar Trust Estate O-10-29978 | Americo Energy Resources, LLC only | Chaney (Clearfork) | Howard | 1 | 2.73K | 44 | by Jan 1993 – Oct 2002 |
| University 4 C O-10-25547 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 1 | 2.71K | 16.5K | by Jan 1993 – Nov 2009 |
| Burns Trustees O-11-62109 | Perry Producing Company, Inc. only | Ackerly (Dean Sand) | Martin | 1 | 2.7K | 2.16K | Jul 1994 – Aug 2001 |
| Sabine Royalty Trust G-6-201706 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 2.7K | 1.03M | Oct 2003 – Aug 2026 |
| West Ranch G-10-175161 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.67K | 2.3M | Nov 1999 – Aug 2026 |
| Texaco-Slator -22- O-10-38085 | Rust Oil Corp. only | Goldsmith (Clear Fork) | Ector | 1 | 2.67K | 0 | Nov 2006 – Apr 2010 |
| Brown, Hazel et Al O-7-8646 | Aaa Oil Trust only | East Texas | Rusk | 3 | 2.65K | 33 | by Jan 1993 – May 1998 |
| Rust, Arnold Unit 1 G-6-135578 | Brookston Energy, Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 2.65K | 529K | by Jan 1993 – Aug 2017 |
| Longfellow G-10-185579 | Occidental W TX Overthrust, Inc. only | Pinon (Overthrust) | Pecos | 1 | 2.64K | 36.3K | Sep 2001 – Apr 2008 |
| Tubbs-AH O-7-6716 | Aaa Oil Trust only | East Texas | Gregg | 10 | 2.64K | 2.32K | by Jan 1993 – Sep 1998 |
| Snyder Mineral Trust O-8-25418 | Delray Oil, Inc. only | Shackelford County Regular | Shackelford | 8 | 2.61K | 244 | by Jan 1993 – Jun 1994 |
| Jones Trust -24- G-14-119365 | Unbridled Resources, LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 2.61K | 730K | by Jan 1993 – Oct 2013 |
| Bruni Mineral Trust "B" G-4-213305 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 2.6K | 1.51M | Mar 2005 – Jul 2026 |
| Walker-Buckler Trust/TR 40A/ O-8-26294 | Beehive Operating, LLC only | Fort Griffin, E. (Caddo) | Shackelford | 2 | 2.59K | 6.18K | Sep 1993 – Nov 2012 |
| Stewart Trust G-4-270000 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 2.59K | 2.38M | Jul 2012 – Aug 2026 |
| Semmes Trust, et al "906" G-4-187213 | Conoco Inc. only | Rincon (90 Vicksburg 906-4) | Starr | 1 | 2.58K | 20.3K | Jul 2001 – Aug 2001 |
| Bruni Mineral Trust G-4-74290 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 2.58K | 2.66M | by Jan 1993 – Aug 2026 |
| Brooks Trust NO.2 G.U.#2 G-2-181122 | Dirks Petroleum Company only | Cadiz, North (Slick-Wilcox) | Bee | 1 | 2.58K | 223K | Sep 2000 – Feb 2008 |
| Kincaid, A. R. Trust 'D' G-9-180096 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.57K | 158K | Oct 2000 – Aug 2026 |
| Kulcak Family Trust Unit O-2-11871 | Kaler Energy Corp. only | Mauritz, East (6970 Sand) | Wharton | 1 | 2.57K | 1.06K | Aug 2019 – Feb 2020 |
| Winans Living Trust "B" O-1-10804 | Southwest Loop 1604, Ltd. only | Somerset | Atascosa | 3 | 2.55K | 44 | by Jan 1993 – Mar 2009 |
| Winterbotham, J. M. Trust G-9-37812 | Hilcorp Energy Company only | Dove Creek (Canyon -B-) | Irion | 1 | 2.54K | 211K | by Jan 1993 – Aug 2026 |
| Jones Trust G-14-251079 | FX Energy Operating, LLC only | Higgins, West (Atoka) | Lipscomb | 1 | 2.52K | 444K | Feb 2009 – Aug 2026 |
| West Ranch G-10-257332 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.52K | 1.51M | Dec 2009 – Feb 2025 |
| Frost Trust 29 G-4-196374 | EOG Resources, Inc. only | Tiffany (Wilcox Carrizo) | Webb | 1 | 2.51K | 185K | Jul 2003 – Jan 2010 |
| Marshall, Stanley Trustee "A" G-4-148840 | Varas Energy Operating Company, only | Tom Shearman (Halbouty) | Webb | 1 | 2.51K | 2.26M | Mar 1994 – Oct 2014 |
| Bruni Mineral Trust "C" G-4-214166 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 2.49K | 927K | Aug 2005 – Aug 2026 |
| West Ranch G-10-203343 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.49K | 4.78M | May 2004 – Apr 2024 |
| Bruni Mineral Trust G-4-81205 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 2.49K | 4.58M | by Jan 1993 – Aug 2026 |
| Logan Family Trust O-13-29956 | Hep Oil Company, Ltd. only | Wizard Wells (Caddo 4900) | Jack | 4 | 2.49K | 8.19K | Sep 2001 – Nov 2004 |
| Muckelroy G-6-110392 | Long Trusts, The only | Toolan (Travis Peak) | Nacogdoches | 1 | 2.48K | 340K | by Jan 1993 – Feb 2021 |
| Kincaid, A. R., Trust -D- G-9-47761 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 2.47K | 535K | by Jan 1993 – Oct 1997 |
| Mitchell 31 G-9-161943 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 2.47K | 347K | Jun 1997 – Jan 2005 |
| West Ranch G-10-189231 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.45K | 5.35M | May 2002 – Feb 2024 |
| Smith Family Trust Gas Unit G-6-227007 | Weatherly Oil & Gas, LLC only | Naconiche Creek (Rod.-TP Cons.) | Rusk | 1 | 2.45K | 35.7K | Mar 2007 – Nov 2017 |
| Jones Trust 359 G-14-252511 | Highmark Energy Operating, LLC only | Lipscomb (Atoka) | Lipscomb | 1 | 2.44K | 1.06M | Jul 2009 – Aug 2026 |
| Kincaid, A. R. Trust "D" G-9-48609 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 2.44K | 370K | by Jan 1993 – Sep 1997 |
| Frye Family Trust O-13-30944 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 3 | 2.44K | 68.5K | Feb 2008 – Aug 2018 |
| Begert Trust 31 G-14-244167 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 2.43K | 394K | Oct 2008 – Aug 2026 |
| Stewart Trust G-4-269757 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 2.4K | 1.98M | Mar 2013 – Aug 2026 |
| Citizens National Bank Trustee A G-14-171821 | 4P Energy Texas, LLC only | Coburn, SW (Tonkaw) | Lipscomb | 1 | 2.4K | 49.1K | Feb 1999 – Oct 2008 |
| Cole Trust Stony G-13-188432 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 2.4K | 285K | Mar 2002 – Aug 2026 |
| Henderson Trust G-9-223112 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 2.39K | 829K | Aug 2006 – Aug 2026 |
| Hinrichs-Rust O-9-13289 | Atlas Operating LLC only | Murray-Rust (Strawn) | Tom Green | 1 | 2.39K | 12.1K | by Jan 1993 – Jun 2008 |