| Galvan Ranch G-1-279678 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 26.1K | 4.72M | Jun 2015 – Aug 2026 |
| Vaquillas Ranch L G-4-159238 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 26.1K | 818K | Mar 1996 – Aug 2026 |
| Galvan Ranch G-1-279645 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 26K | 5.52M | Jan 2015 – Jan 2026 |
| Hereford -T- G-4-151017 | North Central Oil Corp. | Hereford (Lobo) | 1 | 26K | 2.79M | Jul 1994 – Jul 2005 |
| Las Raices Ranch G-4-264149 | XTO Energy Inc. | Gates Ranch (Eagle Ford Shale) | 1 | 26K | 1.07M | Sep 2011 – Aug 2026 |
| Leyendecker-Hunter 1377 G-1-270870 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 26K | 3.23M | Sep 2013 – Aug 2026 |
| Briscoe - Olmitos Ranch G-4-162162 | EOG Resources, Inc. | Vaquillas Ranch (Lobo Cons.) | 1 | 26K | 2.46M | Mar 1997 – Jul 2007 |
| Vaquillas-State G-4-251129 | Hilcorp Energy Company | Tiffany (Wilcox Carrizo) | 1 | 26K | 1.44M | Jul 2009 – Aug 2026 |
| Galvan Ranch G-1-284274 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 25.9K | 3.94M | Apr 2019 – Aug 2026 |
| Long, A. G. Heirs GU A G-1-275318 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 25.9K | 3.65M | May 2014 – Aug 2026 |
| Day G-4-143059 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 25.8K | 2.94M | by Jan 1993 – Aug 2026 |
| Coleman O-4-7002 | Three C Exploration, LLC | Mirando City | 3 | 25.8K | 143 | by Jan 1993 – Dec 2023 |
| Alexander, Charles G-4-165681 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 25.7K | 7.65M | Nov 1997 – Aug 2026 |
| Galvan Ranch G-1-279915 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 25.7K | 4.21M | Jun 2015 – Aug 2026 |
| K&H Fee 942 G-4-231998 | Killam Oil Co., Ltd. | B.M.T. (Lobo Cons.) | 1 | 25.7K | 1.24M | Oct 2007 – Aug 2026 |
| South Callaghan Ranch O-4-13565 | L.T.D. Explorations Inc. | Brettchance (Middle Wilcox) | 1 | 25.6K | 0 | Apr 2009 – Aug 2026 |
| Briscoe R GU4 State 162 G-1-280554 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 25.6K | 511K | Jul 2015 – Sep 2018 |
| El Gato G-4-89678 | Hilcorp Energy Company | El Gato (Lobo) | 1 | 25.5K | 2.12M | by Jan 1993 – Aug 2026 |
| Alexander, Charles G-4-167535 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 25.5K | 5.15M | Mar 1998 – Aug 2026 |
| Galvan Ranch G-1-279675 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 25.4K | 3.97M | Jun 2015 – Aug 2026 |
| Las Raices Ranch G-4-265587 | XTO Energy Inc. | Gates Ranch (Eagle Ford Shale) | 1 | 25.4K | 1.02M | Nov 2011 – Aug 2026 |
| Carr G-4-174239 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 25.4K | 1.24M | Sep 1999 – Nov 2007 |
| Leyendecker-Hunter 1377 GU G-1-265554 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 25.3K | 818K | Jun 2011 – Aug 2026 |
| Summers, Bruni G-4-178208 | Killam Oil Co., Ltd. | Moritas Creek (8500) | 1 | 25.2K | 3.08M | Jun 2000 – Aug 2026 |
| Two Republics O-4-1888 | Three C Exploration, LLC | Mirando City | 6 | 25.1K | 21 | by Jan 1993 – Aug 2021 |
| Keidel-Tejones 1664 G-4-157006 | Three-C Oil and Gas | Vaquillas Ranch (Lobo) | 1 | 25.1K | 3M | Feb 1996 – Dec 2002 |
| Block, Anna G-4-162572 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 25.1K | 3.62M | Dec 1996 – Sep 2003 |
| Galvan Ranch G-1-269620 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 25.1K | 2.43M | Sep 2012 – Mar 2026 |
| Roseberry, D. L. G-4-135960 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 25.1K | 4.09M | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-268408 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 25K | 658K | Sep 2012 – Aug 2026 |
| Lundell G-4-142738 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 25K | 2.33M | by Jan 1993 – Aug 2026 |
| Killam & Hurd Fee "1614" G-4-168195 | Killam Oil Co., Ltd. | B.M.T. (Lobo Cons.) | 1 | 25K | 1.88M | Mar 1998 – Aug 2026 |
| Galvan Ranch G-1-280693 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 24.9K | 7.73M | Mar 2016 – Aug 2026 |
| Petty Ranch G-1-178559 | White Oak Operating Company LLC | Catarina, SW. (San Miguel-Gas) | 1 | 24.9K | 1.05M | Jun 2000 – Feb 2016 |
| Las Raices Ranch G-4-261698 | XTO Energy Inc. | Gates Ranch (Eagle Ford Shale) | 1 | 24.9K | 804K | Apr 2011 – Aug 2026 |
| Hubberd, William "C1" G-4-146480 | Columbus Energy, LLC | Hubberd (Lobo) | 1 | 24.9K | 4.37M | Apr 1993 – Aug 2026 |
| Staggs G-4-216293 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 24.9K | 4.19M | Jan 2006 – Aug 2026 |
| Galvan Ranch G-1-279677 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 24.9K | 4.36M | Jun 2015 – Aug 2026 |
| Vaquillas Ranch Co. S.G.U. G-4-210050 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 24.9K | 1.76M | Feb 2005 – Aug 2026 |
| Hubberd, William A G-4-167287 | Columbus Energy, LLC | Hubberd (Lobo) | 1 | 24.9K | 2.96M | Feb 1998 – Aug 2026 |
| Vergara-Rayzor GU G-4-198123 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 24.9K | 3.12M | Aug 2003 – Aug 2026 |
| Benavides, AN/CY F G-4-223092 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 24.9K | 847K | Aug 2006 – Aug 2026 |
| James Trust G-1-279209 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 24.9K | 3.84M | Jun 2015 – Aug 2026 |
| Briscoe G G-1-269606 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 24.8K | 406K | Sep 2012 – Jul 2016 |
| Vaquillas Ranch "C" G-4-144858 | Conoco Inc. | Vaquillas Ranch (Lobo Cons.) | 1 | 24.8K | 1.51M | Mar 1993 – Jul 1998 |
| Galvan Ranch G-1-299061 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 24.8K | 2.53M | Jul 2025 – Aug 2026 |
| Gates 09 Rose B G-4-271414 | Rosetta Resources Operating LP | Gates Ranch (Eagle Ford Shale) | 1 | 24.8K | 1.03M | Sep 2013 – Aug 2026 |
| Dcrc "3E" G-4-148560 | Killam Oil Co., Ltd. | Moca (Sand 4, Seg. 2) | 1 | 24.8K | 3.09M | Mar 1994 – Feb 2000 |
| Benavides, Rosa V. D G-4-191883 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 24.8K | 860K | Jun 2002 – Aug 2026 |
| Vaquillas Ranch Co. Ltd. G-4-186609 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 24.7K | 1.43M | Oct 2001 – Aug 2026 |