| Mills Trust "19" G-1-196157 | Dawson Energy, LLC only | Pandale (Canyon Sand) | Val Verde | 1 | 25 | 203K | Jun 2003 – Aug 2026 |
| Hill-Fawcett, Randee Trust "D" G-9-215262 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 24 | 206K | Oct 2005 – Jul 2026 |
| West Ranch G-10-252124 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24 | 933K | Aug 2008 – Apr 2024 |
| Allison 4 G-10-245316 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24 | 2.77M | Nov 2008 – Apr 2024 |
| Longfellow G-10-259767 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24 | 275K | Sep 2010 – Dec 2023 |
| Allison G-10-245314 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 24 | 87.3K | Jun 2008 – Sep 2025 |
| Alamo National Bank Trustee G-1-122290 | Virtex Operating Company, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 23 | 198K | by Jan 1993 – Apr 2003 |
| West Ranch South 4 G-10-249993 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 23 | 1.79M | Apr 2009 – Feb 2024 |
| Allison G-10-243236 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 23 | 909K | Aug 2008 – Mar 2024 |
| West Ranch G-10-275100 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 23 | 134K | Dec 2010 – Feb 2026 |
| West Ranch G-10-188450 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 22 | 391K | Mar 2002 – Apr 2024 |
| Cole Trusts 576 "A" G-13-184864 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 22 | 166K | Aug 2001 – Aug 2026 |
| Fawcett, Randee Trust C G-9-215238 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 22 | 137K | Nov 2005 – Jul 2026 |
| West Ranch South 4 G-10-245330 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 22 | 3.54M | Feb 2008 – Mar 2024 |
| Peareson Trust et Al G-3-201757 | Amtex Energy, Inc. only | Duc (Frio) | Wharton | 1 | 22 | 580K | Mar 2004 – Feb 2011 |
| Longfellow G-10-178580 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 22 | 903K | Aug 2000 – Jan 2024 |
| Cartwright, L. et al Trustee G-2-134438 | Roberson, F. W. Jr. only | Hinnant (5900) | Live Oak | 1 | 22 | 122 | Aug 1993 – Aug 1993 |
| Lopez Mineral Trust G-4-198140 | Paleo Oil Company LLC only | Dinn Intermediate (Hinnant) | Duval | 1 | 22 | 167K | Jun 2003 – Sep 2020 |
| Texaco Pel-Tex Schreiner Trust G-2-122850 | Wagner Oil Company only | Sharonlee, N.E. (Sligo) | Live Oak | 1 | 21 | 10.6M | by Jan 1993 – Aug 2026 |
| Anthony, James E. Trustee G-6-146925 | Fair Oil, Ltd. only | Green Fox (Travis Peak-Braden | Marion | 1 | 21 | 26.3K | Feb 1993 – Aug 2002 |
| Randee Fawcett Trust "C" G-9-206116 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 21 | 254K | Nov 2003 – Jul 2026 |
| West Ranch G-10-208218 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 21 | 392K | Dec 2004 – Jul 2026 |
| West Ranch G-10-246385 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 21 | 135K | Mar 2008 – Jul 2026 |
| Standard Trust Co. G-3-86446 | Activa Resources, LLC only | S. L. P. (Navarro) | Fayette | 1 | 21 | 80.9K | by Jan 1993 – Nov 2014 |
| Weinheimer,e.a.-Grady Trust Unit G-3-148158 | Conoco Inc. only | El Campo, North (Miocene) | Wharton | 1 | 20 | 122K | Jan 1994 – Sep 1994 |
| West Ranch G-10-260145 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 20 | 1.01M | Sep 2010 – Jan 2024 |
| Kennedy Trust-Hughes G-6-247186 | Adamas Energy LLC only | Angie (James Lime) | Shelby | 1 | 20 | 41.2K | Oct 2008 – Aug 2026 |
| Longoria Mineral Trust, et Al G-4-170449 | Coastal Oil & Gas Corporation only | Thompsonville, NE. (11,300) | Duval | 1 | 20 | 99.3K | Nov 1997 – Nov 1998 |
| Rio Grande Land Trust G.U. #1 G-4-129705 | Texas Independent Explor., Inc. only | Mercedes ( 3-D) | Hidalgo | 1 | 20 | 23.2K | by Jan 1993 – Apr 1998 |
| West Ranch G-10-249730 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 20 | 3.88M | Mar 2008 – Mar 2024 |
| Hill-Randee Fawcett Trust "K" G-9-209588 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 20 | 173K | Jun 2004 – Jul 2026 |
| JBG Childrens 1991 Trust "E" G-3-197287 | Lone Wolf Operating Company only | Brookshire | Waller | 1 | 20 | 122K | Jul 2003 – Oct 2004 |
| West Ranch G-10-250631 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 20 | 1.8M | Apr 2009 – Mar 2024 |
| Hankamer G-3-138232 | U.S. Exploration Liq. Trust only | Camptown (5200 Frio) | Newton | 1 | 20 | 72 | by Jan 1993 – Mar 1993 |
| Cole Trust Four G-13-197633 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 20 | 1.71M | Jul 2003 – Aug 2026 |
| Marrs McLean Trust G-4-177420 | Columbus Energy, LLC only | Thompsonville, NE. (12500 FB-C) | Jim Hogg | 1 | 19 | 2.32M | May 2000 – May 2014 |
| West Ranch G-10-249408 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 19 | 79.6K | Nov 2008 – May 2026 |
| Cole Trusts 576 "A" G-13-194118 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 19 | 1.5M | Jan 2003 – Apr 2021 |
| West Ranch G-10-258017 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 19 | 896K | Jul 2010 – Feb 2024 |
| Benavides Trust G-4-192464 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 19 | 749K | Dec 2002 – Aug 2026 |
| West Ranch G-10-252817 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 19 | 139K | Nov 2008 – Feb 2024 |
| West Ranch G-10-251519 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 19 | 101K | Jun 2009 – Apr 2024 |
| West Ranch G-10-244928 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 19 | 233K | Jan 2008 – Feb 2025 |
| Longfellow State G-10-240066 | Occidental W TX Overthrust, Inc. only | Pinon (Overthrust) | Pecos | 1 | 19 | 232K | May 2008 – Jul 2010 |
| Fawcett, Randee Trust "C" G-9-213853 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 19 | 148K | Jul 2005 – Jul 2026 |
| West Ranch G-10-271550 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 18 | 603K | Feb 2010 – Apr 2024 |
| West Ranch G-10-218477 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 18 | 409K | Jun 2006 – Jun 2015 |
| West State G-10-260537 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 18 | 1.5M | Aug 2009 – Jan 2025 |
| Randee Fawcett Trust G-9-212326 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 18 | 150K | May 2005 – Jul 2026 |
| West Ranch South 4 G-10-259629 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 18 | 1.09M | Nov 2009 – Feb 2024 |