| Bruni, A. M. Fee G-4-107218 | BZG E&P LLC | Presa de Oro (Lobo No. 6) | 1 | 19K | 2.23M | by Jan 1993 – Aug 2026 |
| Briscoe R GU6 State G-1-281091 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 19K | 1.42M | Aug 2017 – Aug 2026 |
| James Trust G-1-279457 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 19K | 4.64M | Jul 2015 – Aug 2026 |
| B.M.T. G-4-189968 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 19K | 1.37M | Jun 2002 – Aug 2026 |
| Briscoe C (SA7) O-1-20442 | SM Energy Company | Lorenzo (Austin Chalk) | 1 | 18.9K | 62.8K | Jan 2022 – Jan 2022 |
| Vergara, G. B. G-4-113194 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.9K | 566K | by Jan 1993 – Aug 2026 |
| Vaquillas Ranch A1 G-4-163397 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.8K | 2.25M | May 1997 – Aug 2026 |
| Vaquillas Ranch "A-1" G-4-142042 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.8K | 839K | by Jan 1993 – Aug 2026 |
| Lundell G-4-116145 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.8K | 1.89M | by Jan 1993 – Aug 2026 |
| Ramirez, J.E. G-4-97093 | Hilcorp Energy Company | Laredo (Lobo) | 1 | 18.7K | 4.57M | Feb 1993 – Aug 2026 |
| Dawson 360 G.U. G-1-269924 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 18.7K | 1.73M | Apr 2013 – Jul 2026 |
| El Gato "A" G-4-142884 | Marwell Petroleum Ltd Partnrship | Belle Jeffers, East (Lobo) | 1 | 18.7K | 3.4M | by Jan 1993 – Aug 2008 |
| Vergara Rayzor GU G-4-193815 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.7K | 1.65M | Jan 2003 – Aug 2026 |
| Benavides, Rosa V. A2 G-4-252113 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 18.7K | 980K | May 2009 – Aug 2026 |
| Benavides, Rosa V. 1908 G-4-130479 | Three-C Oil and Gas | Benavides (Lobo Cons.) | 1 | 18.7K | 482K | by Jan 1993 – Nov 2020 |
| Lundell G-4-135965 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.7K | 2.77M | by Jan 1993 – Aug 2026 |
| Lundell Ranch G-4-107647 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.7K | 1.41M | by Jan 1993 – Apr 2026 |
| Russell Winch G-4-253015 | Arete Operating Company II, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 18.6K | 1.07M | Nov 2009 – Aug 2026 |
| Uribe, Rosita Etal G-4-112385 | Conocophillips Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.6K | 1.01M | by Jan 1993 – Nov 2002 |
| Huisache Cattle Co. B G-4-273105 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 18.6K | 1.45M | Jul 2013 – Aug 2026 |
| Vaquillas 1646 G-4-121975 | Three-C Oil and Gas | Vaquillas Ranch (Lobo) | 1 | 18.6K | 927K | by Jan 1993 – Apr 2023 |
| Gates "N" TR4 G-4-289659 | Lewis Petro Properties, Inc. | Gold River, North (Olmos) | 1 | 18.6K | 1.14M | Oct 2019 – Aug 2026 |
| Benavides, Rosa V. A1 G-4-172979 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 18.6K | 1.01M | Apr 1999 – Aug 2026 |
| Winch G-4-256325 | Tare Resources, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 18.5K | 1.68M | Apr 2010 – Jul 2026 |
| Vergara Rayzor 1676 GU G-4-215228 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.5K | 1.34M | Sep 2005 – Aug 2026 |
| Vergara, G. B. G-4-171431 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.5K | 1.78M | Nov 1998 – Aug 2026 |
| Piloncillo G-1-267063 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 18.5K | 490K | Mar 2012 – Aug 2026 |
| Briscoe B (SA7) G-1-269555 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 18.5K | 580K | Jun 2012 – Mar 2020 |
| James Trust G-1-279454 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 18.4K | 4.65M | Jul 2015 – Aug 2026 |
| Galvan Ranch G-1-279651 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 18.4K | 3.66M | May 2015 – Aug 2026 |
| Piloncillo G-1-269140 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 18.4K | 342K | Mar 2013 – Aug 2026 |
| Juraschek G-4-150737 | Conoco Inc. | Vaquillas Ranch (Lobo Cons.) | 1 | 18.4K | 4.23M | Jul 1994 – Jan 1998 |
| De la Garza G-4-176819 | Varas Energy Operating Company, | Tiffany (Wilcox Carrizo) | 1 | 18.4K | 1.25M | Mar 2000 – Aug 2026 |
| Day G-4-202191 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.4K | 2.21M | Mar 2004 – Aug 2026 |
| Petty, O. S. G-1-95343 | White Oak Operating Company LLC | Catarina, SW. (San Miguel-Gas) | 1 | 18.4K | 664K | by Jan 1993 – Feb 2016 |
| Vergara 1674 G-4-108453 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.4K | 2.76M | by Jan 1993 – Aug 2026 |
| BMT G-4-186829 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 18.3K | 2.02M | Dec 2001 – Aug 2026 |
| Puig, V. L. -B- O-4-181 | Buck Management Co. L.L.C. | Aviators | 8 | 18.3K | 98 | by Jan 1993 – Mar 2002 |
| Gates "N" TR5 G-4-289661 | Lewis Petro Properties, Inc. | Gold River, North (Olmos) | 1 | 18.3K | 439K | Oct 2019 – Aug 2026 |
| Vaquillas Ranch Company, Ltd. O-4-13462 | Three C Exploration, LLC | Gene Walker (Rosenberg, Lo.) | 1 | 18.3K | 30 | Oct 2007 – Feb 2021 |
| Santa Elena G-4-272554 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 18.3K | 2.36M | May 2013 – Aug 2026 |
| S. D. Martinez GU G-4-171660 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 18.3K | 4.06M | Nov 1998 – Aug 2026 |
| Union Ranch G-4-188672 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 18.2K | 3.27M | Apr 2002 – Aug 2026 |
| Lundell Ranch G-4-114279 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.2K | 1.29M | by Jan 1993 – Aug 2026 |
| Callaghan Ranch G-4-210183 | Hilcorp Energy Company | Finley-Webb (Lobo Cons) | 1 | 18.2K | 1.09M | Apr 2005 – Oct 2012 |
| Briscoe C G-1-279666 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 18.2K | 441K | Apr 2015 – Oct 2017 |
| James Trust G-1-279012 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 18.2K | 3.38M | Jun 2015 – Aug 2026 |
| Galvan Ranch G-1-281093 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 18.2K | 3M | Mar 2017 – Jul 2026 |
| C-Bruni Mineral Trust G-4-151285 | Hilcorp Energy Company | Bashara-Hereford (7300) | 1 | 18.2K | 1.76M | Sep 1994 – Aug 2026 |
| Galvan Ranch G-1-281189 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 18.2K | 3.68M | Sep 2016 – Aug 2026 |