| Begert Trust 5 G-14-246514 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 3.12K | 550K | Nov 2008 – Aug 2026 |
| West Ranch G-10-248294 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.11K | 915K | Sep 2007 – Jan 2025 |
| Boston Texas Land Trust Co. G-4-157997 | Quisto Expl. & Production, L.C. only | Flores (Vicksburg, Lower) | Starr | 1 | 3.11K | 175K | Oct 1995 – Oct 1996 |
| West Ranch 138 G-10-240178 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.09K | 614K | May 2008 – Aug 2026 |
| Shanafelt Trust G-13-141458 | Western Chief Operating, L.L.C. only | Jack County Regular | Jack | 1 | 3.09K | 111K | by Jan 1993 – Aug 2024 |
| Stewart Trust G-4-268851 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 3.09K | 2.42M | Feb 2012 – Jul 2026 |
| Bruni Mineral Trust "B" G-4-120031 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 3.08K | 1.17M | by Jan 1993 – Aug 2026 |
| Savage Family Trust O-11-68873 | Williams, Clayton Energy, Inc. only | Amrow, North (Wolfcamp) | Gaines | 1 | 3.07K | 0 | Dec 2005 – Mar 2008 |
| Kincaid, A. R. Trust 'C' G-9-150389 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 3.06K | 334K | Jul 1994 – Apr 2000 |
| Marberry Unit O-2-3078 | Hunt, Wm. Herbert, Trust Est. only | Bloomington (6100) | Victoria | 1 | 3.06K | 2.88K | by Jan 1993 – Sep 1993 |
| West State G-10-248436 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.04K | 347K | Dec 2008 – Aug 2026 |
| Byrne Family Trust G-3-194360 | Texas Onshore Energy, Inc. only | Needville, South (Frio Jewel) | Fort Bend | 1 | 3.03K | 387K | Apr 2003 – Oct 2008 |
| C-Bruni Mineral Trust G-4-134542 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 3.03K | 924K | by Jan 1993 – Aug 2026 |
| Mackey, W.W. G-6-125780 | Long Trusts, The only | Willow Springs (Cotton Valley) | Gregg | 1 | 3.02K | 484K | by Jan 1993 – Jul 2026 |
| Begert Trust 3 G-14-253945 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 3.02K | 264K | Mar 2008 – Aug 2026 |
| West Ranch G-10-272791 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.01K | 482K | Dec 2010 – Oct 2024 |
| Iowa Realty Trust -A- O-10-25895 | Pedco Resources Company only | Lehn-Apco, South (Ellen) | Pecos | 1 | 3K | 493 | by Jan 1993 – Nov 1993 |
| James Trust G-4-292003 | Lewis Petro Properties, Inc. only | Tom Walsh (Olmos) | Webb | 1 | 2.98K | 382K | Mar 2021 – Aug 2026 |
| Gex, Lutie W. Trust G-14-144604 | EOG Resources, Inc. only | Mammoth Creek, North (Cleveland) | Lipscomb | 1 | 2.97K | 184K | by Jan 1993 – Aug 1996 |
| Watkins O-7-8444 | Long Trusts, The only | East Texas | Rusk | 1 | 2.97K | 20 | by Jan 1993 – Oct 2020 |
| West Ranch G-10-212501 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.97K | 2.29M | Sep 2005 – Aug 2026 |
| Marshall Bros. Trusts "C" G.U. G-3-153833 | Galloway Lone Star, L.L.C. only | Tomball, SE. (10650) | Harris | 1 | 2.96K | 119K | Feb 1995 – Dec 1995 |
| Miller Trust G-6-283065 | Sydri Operating, LLC only | Waterman (Travis Peak) | Nacogdoches | 1 | 2.95K | 910K | Jul 2017 – Aug 2026 |
| Tyrrell, W. C. Trust G-3-168006 | Rising Star Energy Partners II, only | Anahuac, W. (Marginulina "A") | Chambers | 1 | 2.95K | 906K | Apr 1998 – Jan 2001 |
| Begert Trust 5 G-14-253462 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 2.94K | 398K | May 2009 – Aug 2026 |
| Begert Trust 4 G-14-251476 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 2.94K | 340K | Sep 2008 – Aug 2026 |
| West Ranch O-10-38410 | Occidental W TX Overthrust, Inc. only | Allison Ranch (Wolfcamp) | Pecos | 1 | 2.94K | 35.8K | May 2007 – Jun 2017 |
| Sabine Royalty Trust G-6-152529 | Amplify Energy Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 2.94K | 1.41M | Nov 1994 – Apr 2021 |
| Lutheran Church GU G-6-218689 | Long Trusts, The only | Beckville (Cotton Valley) | Panola | 1 | 2.91K | 740K | Feb 2006 – Jul 2026 |
| Westbend Commercial SWD O-10-32582 | Rust Oil Corp. only | Cowden (Penn Detrital) | Ector | 1 | 2.91K | 19 | by Jan 1993 – Jul 1998 |
| Frye Family Trust Unit G-13-277788 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 2.89K | 516K | May 2014 – Aug 2021 |
| Begert Trust 3 G-14-251034 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 2.89K | 373K | Apr 2009 – Aug 2026 |
| Kincaid, A. R. Trust "D" G-9-225800 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.89K | 111K | Feb 2007 – Aug 2026 |
| Smith Family Trust Gas Unit G-6-222709 | Weatherly Oil & Gas, LLC only | Naconiche Creek (Rod.-TP Cons.) | Rusk | 1 | 2.89K | 94.8K | Sep 2006 – Jun 2019 |
| West Ranch G-10-140878 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.88K | 703K | Oct 1993 – Aug 2026 |
| Los Ojuelos Mineral Trust G-4-226916 | Evans, S. Lavon Jr. Oper. Co. only | Pancho (Wilcox) | Webb | 1 | 2.87K | 227K | Nov 2006 – Sep 2017 |
| Moos-Bouldin Trust (AW1) O-1-18158 | Auterra Operating, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 2.86K | 836 | Aug 2014 – Nov 2025 |
| Trustee #2 G-4-164966 | Star of Texas Energy Srvs, Inc. only | Amore (Vicksburg 5500) | Starr | 1 | 2.85K | 359K | Oct 1997 – Nov 1998 |
| West Ranch G-10-239059 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.82K | 24.5K | Feb 2008 – Apr 2023 |
| Kincaid, A. R. Trust "B" G-9-165456 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.82K | 215K | Oct 1997 – Aug 2026 |
| Jones Trust G-14-146791 | Mewbourne Oil Company only | Coburn Lower (Lower Morrow) | Lipscomb | 1 | 2.81K | 3.61M | Sep 1993 – Aug 2026 |
| Vollmert Trust G-14-158646 | BRG Lone Star Ltd. only | Red Deer Creek (Granite Wash) | Roberts | 1 | 2.8K | 145K | Jun 1996 – Jun 2015 |
| Cole Trust G-13-280026 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 2.79K | 121K | Feb 2016 – May 2023 |
| Kincaid, A.R. Trust "D" G-9-81004 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 2.78K | 544K | by Jan 1993 – Dec 1999 |
| Miller Trust G-6-281207 | Sydri Operating, LLC only | Waterman (Travis Peak) | Nacogdoches | 1 | 2.78K | 906K | Jul 2016 – Dec 2025 |
| Douglas Mineral Trust O-13-13962 | Lariat Energy Corporation only | Wichita County Regular | Wichita | 20 | 2.78K | 31 | by Jan 1993 – Jan 2007 |
| Kincaid, A. R. Trust G-9-19112 | Texaco E & P Inc. only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.77K | 152K | by Jan 1993 – Mar 2002 |
| Gex, Lutie W. Trust G-14-145231 | Amoco Production Company only | Mammoth Creek, North (Cleveland) | Lipscomb | 1 | 2.75K | 56K | Apr 1993 – Jun 1999 |
| Martin Trust C G-14-172302 | United Oil & Shale LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 2.75K | 170K | Jan 1999 – Jul 2013 |
| Morris Trust O-14-6798 | Courson Oil & Gas, Inc. only | Lautz (Lansing) | Sherman | 1 | 2.74K | 10.8K | by Jan 1993 – Oct 1995 |