| Kincaid, A. R. Trust "B" G-9-49869 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.64K | 577K | by Jan 1993 – Aug 2026 |
| Bruni Mineral Trust G-4-146527 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 6.61K | 15.1M | Aug 1993 – Aug 2026 |
| Mitchell 4 G-9-198187 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 6.58K | 996K | Aug 2003 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-149664 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.58K | 592K | May 1994 – Aug 2026 |
| Longfellow SS 600 O-10-38514 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 6.56K | 42.4K | Jan 2008 – Feb 2013 |
| Watson Camp Trust O-1-10825 | Aminex USA, Inc. only | Somerset | Atascosa | 23 | 6.56K | 22 | by Jan 1993 – Dec 2003 |
| Amacker Trust 37 O-9-14845 | Legacy Reserves Operating LP only | Tippett, W. (Wolfcamp 5050) | Crockett | 1 | 6.5K | 361K | Aug 1998 – Sep 2009 |
| Jackson Trust 'C' O-13-30577 | Kroh Operating LLC only | Mer-Mag (Bryson) | Jack | 2 | 6.49K | 0 | Jan 2006 – Aug 2017 |
| Daly, Scott L. Trustee -A- O-8-3165 | Arrowhead Productions, LP only | Cal-Tex (Caddo) | Parker | 6 | 6.45K | 207K | by Jan 1993 – Jan 2009 |
| De la Garza Mineral Trust G-4-142384 | Vintage Petroleum, Inc. only | Picoso, E. (Carrizo 7800) | Webb | 1 | 6.44K | 1.52M | by Jan 1993 – Dec 1997 |
| Lloyd Trust O-3-26305 | Wildfire Energy Operating LLC only | Kurten (Buda) | Madison | 1 | 6.43K | 25.9K | Nov 2012 – Jul 2026 |
| Begert Trust 31 G-14-236910 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 6.42K | 608K | Jan 2008 – Oct 2019 |
| Baker Trust O-10-35570 | Linn Operating, Inc. only | B.C. (Dean) | Howard | 1 | 6.42K | 12.3K | Sep 1997 – Dec 1999 |
| Henderson Trust "OO" G-9-165682 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 6.41K | 427K | Sep 1997 – Aug 2026 |
| Oloughlin, C. C., Sr., Trust O-14-1588 | Discovery Operating, Inc. only | Twin (Des Moines) | Hansford | 4 | 6.39K | 67.1K | by Jan 1993 – Apr 1996 |
| Maxey, S. E. Estate O-13-16845 | Beisch, Rusty only | Jack County Regular | Jack | 7 | 6.39K | 132 | by Jan 1993 – Oct 2006 |
| Corpus Christi Bank & Trust O-4-11647 | Magnum Producing & Operating Co. only | Plymouth (5390) | San Patricio | 1 | 6.38K | 21 | by Jan 1993 – Dec 1994 |
| Wimberly Family Trust G-13-238960 | Oakridge Oil and Gas, LP only | Newark, East (Barnett Shale) | Jack | 1 | 6.38K | 80.8K | Sep 2011 – Mar 2023 |
| Switzer Trust G-3-211966 | Noble Energy Inc only | Blue Lake (11,000) | Brazoria | 1 | 6.36K | 573K | Sep 2005 – Jan 2007 |
| Watson Camp Trust O-1-8260 | Calk Oil Company only | Somerset | Atascosa | 5 | 6.36K | 19 | by Jan 1993 – Jul 2026 |
| Kincaid, A. R. Trust "B" G-9-158182 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.35K | 476K | Mar 1996 – Aug 2026 |
| Iowa Realty Trust "A" O-10-34054 | MBR Resources, Inc. only | Lehn-Apco, S. (Wichita-Albany) | Pecos | 1 | 6.34K | 260K | Dec 1993 – Jun 2001 |
| Lester Trust "2" O-10-37336 | Pioneer Natural Res. USA, Inc. only | Desperado (Atoka) | Midland | 1 | 6.34K | 77.6K | Feb 2004 – Dec 2015 |
| Holland, W. W. -C- O-7-8377 | Aaa Oil Trust only | East Texas | Rusk | 2 | 6.34K | 1.28K | by Jan 1993 – Jan 2002 |
| Schmid Trust G-2-161786 | McCombs Energy LLC only | Maxine, East (Mackhank) | Live Oak | 1 | 6.3K | 265K | Jan 1997 – Apr 2000 |
| Kincaid, A. R. Trust "B" G-9-173464 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.28K | 624K | Jun 1999 – Aug 2026 |
| Kincaid, A. R. Trust "D" G-9-82036 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.28K | 458K | by Jan 1993 – Aug 2026 |
| Henderson Trust "DD" G-9-144173 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 6.27K | 884K | by Jan 1993 – Aug 2026 |
| Cole Trust Stony G-13-239923 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 6.26K | 1.06M | Jun 2008 – Aug 2026 |
| Schreiner Ranch Trust II G-2-138101 | Forney Oil Corporation only | Limes (Wilcox F-1) | Live Oak | 1 | 6.26K | 128K | by Jan 1993 – May 1994 |
| Martin Trust A1092 G-14-124520 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 6.25K | 498K | by Jan 1993 – Aug 2026 |
| Hudgins Trust O-13-32673 | Atoka Operating, Inc. only | Southmayd, North (Baker-Viola) | Grayson | 1 | 6.25K | 59.2K | Sep 2013 – Jan 2019 |
| Ocker Trust G-4-161600 | Diasu Oil & Gas Co., Inc. only | Ocker (B-2) | Aransas | 1 | 6.24K | 386K | Sep 1996 – Apr 2001 |
| West Ranch G-10-257307 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 6.24K | 443K | Sep 2009 – Sep 2025 |
| Los Ojuelos Mineral Trust G-4-139588 | Engroup Resources, L.P. only | Missy (Wilcox - Puig) | Webb | 1 | 6.22K | 487K | by Jan 1993 – Apr 2000 |
| Alliance Trust Co. -A- G-3-31531 | Empire Texas Operating LLC only | Fort Trinidad (Glen Rose -E-) | Madison | 1 | 6.2K | 259K | Jul 1997 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-130951 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.18K | 656K | by Jan 1993 – Aug 2026 |
| West Ranch G-10-205911 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 6.14K | 99K | Oct 2004 – Feb 2025 |
| Guerra Mineral Trust G-4-217404 | Mortimer Production Company only | T Patch (Reklaw Oso) | Starr | 1 | 6.11K | 276K | Mar 2006 – Jul 2017 |
| West Ranch G-10-244891 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 6.11K | 169K | Oct 2008 – Jul 2026 |
| Kincaid, A. R. Trust "D" G-9-202002 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 6.11K | 822K | Feb 2004 – Aug 2026 |
| King, J. A. O-14-8248 | AK Pearson Family Trust only | Pan Petro (Cleveland) | Ochiltree | 2 | 6.11K | 0 | May 2011 – Aug 2026 |
| Corpus Christi Bank & Trust G-4-160208 | Magnum Producing, LP only | Taft, North (a-1 Frio) | San Patricio | 1 | 6.08K | 220K | Oct 1996 – Jan 2002 |
| West Ranch G-10-237776 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 6.08K | 167K | Oct 2007 – Jan 2025 |
| Begert Trust 43 G-14-252662 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 6.07K | 546K | May 2009 – Aug 2026 |
| C-Bruni Mineral Trust G-4-164407 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 6.06K | 1.31M | Aug 1997 – Aug 2026 |
| Scurlock Trust "A" G-3-167413 | High Bluff Operating, LLC only | Clinton, N. (Yegua 8400) | Harris | 1 | 6.04K | 312K | Feb 1998 – Apr 2016 |
| Matthews Trust G-4-256683 | Republic Resources, LLC. only | Agua Dulce (Vicksburg Consl.) | Nueces | 1 | 6.03K | 307K | May 2010 – Jul 2012 |
| Kincaid, A. R. Trust "B" G-9-86513 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 6.03K | 639K | by Jan 1993 – Aug 2026 |
| Realty Trust O-10-37419 | Incline Energy only | Pecos Valley (Ellenburger) | Pecos | 1 | 6.02K | 15.9K | Jan 2003 – Jan 2004 |