| Taf Mineral Trust O-6-15337 | Fair Oil, Ltd. only | Maydelle, N. (Woodbine) | Cherokee | 1 | 5.37K | 0 | Sep 2014 – Aug 2018 |
| Kincaid, A. R. Trust "B" G-9-50465 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 5.36K | 478K | by Jan 1993 – Aug 2026 |
| Flowers Trust "B" G-14-174566 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 5.34K | 703K | Jul 1999 – Aug 2026 |
| McCrory Trustee -A- O-13-209 | Schenk Oil Co. only | Archer County Regular | Archer | 3 | 5.31K | 110 | by Jan 1993 – Jul 2026 |
| West Ranch G-10-237763 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.31K | 354K | Oct 2007 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-118519 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 5.3K | 567K | by Jan 1993 – Aug 2026 |
| West Ranch G-10-224639 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.3K | 1.15M | Oct 2006 – Jan 2026 |
| Bruni Mineral Trust "B" G-4-209818 | Hilcorp Energy Company only | Hubberd (Lobo) | Webb | 1 | 5.3K | 2.16M | Mar 2005 – Aug 2026 |
| Kincaid, A. R. Trust "D" G-9-81005 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 5.29K | 555K | by Jan 1993 – Aug 2026 |
| Summers Trust O-3-20262 | Trivista Operating LLC only | Serbin (Taylor Sand) | Bastrop | 1 | 5.27K | 74.6K | by Jan 1993 – Aug 2020 |
| Trusty Oil Unit O-3-11905 | Foundation Energy Management LLC only | Village Mills, East (P) | Hardin | 2 | 5.26K | 310 | by Jan 1993 – Apr 1996 |
| Smith, Mary, -D- O-7-6446 | Long Trusts, The only | East Texas | Rusk | 2 | 5.26K | 21 | by Jan 1993 – Jul 2026 |
| Guerra Mineral Trust G-4-218315 | Mortimer Production Company only | T Patch (Reklaw Oso) | Starr | 1 | 5.24K | 703K | Mar 2006 – Apr 2021 |
| Buckler Trust G-8-137863 | Karper Oil & Gas Corporation only | Walker-Davis (Duffer Lime) | Stephens | 1 | 5.24K | 217K | by Jan 1993 – Apr 2009 |
| West Ranch G-10-239346 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.19K | 1.22M | Mar 2008 – Apr 2024 |
| Lutheran Church GU G-6-222049 | Long Trusts, The only | Beckville (Cotton Valley) | Panola | 1 | 5.19K | 1.51M | Jul 2006 – Jul 2026 |
| Cook Family Trust O-3-25399 | Alamo Operating Company, L. C. only | Cecil Noble (9350) | Colorado | 1 | 5.19K | 35.6K | Jun 2009 – Nov 2009 |
| Boston Texas Land & Trust G-4-196729 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 5.18K | 208K | Sep 2003 – Mar 2012 |
| West Ranch G-10-234605 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.17K | 1.03M | Oct 2007 – Aug 2026 |
| Wylie Trust Burks G-6-288896 | Buckhorn Operating LLC only | Brachfield, S.E. (Cotton Valley) | Rusk | 1 | 5.16K | 1.75M | Nov 2019 – Aug 2026 |
| West Ranch G-10-228887 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.15K | 554K | Jun 2007 – Aug 2026 |
| Kincaid, A.R. Trust -C- G-9-136767 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 5.15K | 763K | by Jan 1993 – Feb 1998 |
| Bailey, James Trustee G-3-127748 | Shana Petroleum Company only | Paul (LW-20) | Colorado | 1 | 5.13K | 127K | by Jan 1993 – Apr 1998 |
| Yarbrough Trust G-5-148939 | Lodestone Operating, Inc. only | Oletha (Travis Peak) | Limestone | 1 | 5.11K | 3.51M | Feb 1994 – Aug 2026 |
| West Ranch G-10-248293 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.09K | 1.89M | Oct 2008 – Aug 2026 |
| Semmes Trust et al 906 O-4-13333 | Hilcorp Energy Company only | Rincon (Vicksburg 87\89) | Starr | 2 | 5.08K | 1.56K | Oct 2005 – Oct 2005 |
| Bruni Mineral Trust A' G-4-143314 | Hilcorp Energy Company only | Cerrito Creek (Lobo 1) | Webb | 1 | 5.07K | 1.2M | by Jan 1993 – Aug 2026 |
| Walker-Buckler Trust (TR.15) G-8-179292 | Keating Energy, Inc. only | Gem, Northeast (Caddo Lime) | Shackelford | 1 | 5.06K | 205K | Sep 2000 – Aug 2026 |
| State of Texas -CX- O-10-13923 | Hendon Wm E. Jr. Rev Lvng Trust only | Triple-N (Penn., Upper) | Andrews | 3 | 5.05K | 135 | by Jan 1993 – Dec 2018 |
| Kincaid, A. R. Trust "B" G-9-147346 | Chevron U. S. A. Inc. only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 5.04K | 452K | Nov 1993 – Mar 2008 |
| Buckler, J. Trust O-8-18976 | McClymond, Ltd. only | Caddo (3440) | Stephens | 1 | 5.03K | 65.5K | by Jan 1993 – Dec 2001 |
| Longfellow 600 MD G-10-236238 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 5.03K | 3.95M | Nov 2007 – Jul 2026 |
| Jones Trust -25- G-14-190779 | Unbridled Resources, LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 5.02K | 436K | Jul 2002 – May 2015 |
| Smith Family Trust Gas Unit G-6-221936 | Weatherly Oil & Gas, LLC only | Naconiche Creek (Rod.-TP Cons.) | Nacogdoches | 1 | 5.01K | 537K | Jul 2006 – Mar 2013 |
| Bruni Mineral Trust "C" G-4-260747 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 5.01K | 879K | Sep 2010 – Aug 2026 |
| Quintanilla, Leo Trustee O-1-12761 | CD Resources Company only | A.W.P. (Wales) | McMullen | 1 | 5.01K | 3.61K | by Jan 1993 – Mar 1995 |
| Begert Trust 43 G-14-246512 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 5K | 455K | Nov 2008 – Aug 2026 |
| Cole Trust Stony G-13-184923 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 4.99K | 295K | Oct 2001 – Aug 2026 |
| Baker Trust G-2-150333 | Rutherford Oil Corporation only | Brazil (1ST Tom Lyne) | Live Oak | 1 | 4.98K | 5.55M | Sep 1994 – Jul 2004 |
| McFarland Trustee et Al O-6-13620 | Jla Resources Company only | Anwac (1400 Wilcox) | Anderson | 2 | 4.97K | 556 | Jul 1996 – Jan 1999 |
| Begert Trust 6 G-14-259763 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 4.96K | 551K | Oct 2010 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-168300 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 4.96K | 486K | Feb 1998 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-49649 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 4.95K | 272K | by Jan 1993 – Aug 2026 |
| O'Loughlin Sr., C.C. Trust G-14-157897 | Mewbourne Oil Company only | Twin (Des Moines) | Hansford | 1 | 4.95K | 268K | Apr 1996 – Jul 2026 |
| Vollmert Trust G-14-251461 | Bracken Operating, L.L.C. only | Mendota, NW. (Granite Wash) | Roberts | 1 | 4.92K | 322K | Sep 2008 – Feb 2016 |
| West Ranch G-10-245315 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 4.9K | 661K | Sep 2008 – Apr 2024 |
| St. Louis Union Trust Co. O-1-1434 | Boomerang Oil & Gas LLC only | Rodriquez (Shallow) | La Salle | 13 | 4.87K | 21 | by Jan 1993 – Aug 2009 |
| Thamm Trust O-2-10890 | Cimarron Engineering, LLC only | Arneckeville (Yegua 4910) | De Witt | 1 | 4.86K | 0 | Apr 2014 – Mar 2019 |
| Kincaid, A. R. Trust 'C' G-9-169061 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 4.85K | 415K | May 1998 – Aug 2026 |
| Bruni Minerals Trust "D" G-4-176492 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 4.85K | 1.28M | Dec 1999 – Aug 2026 |