| Killam and Hurd Fee 1501 G-4-222724 | Killam Oil Co., Ltd. | Valley (Navarro) | 1 | 13.2K | 557K | Sep 2006 – Dec 2011 |
| Hubberd, William "B2" G-4-191715 | Columbus Energy, LLC | Hubberd (Lobo) | 1 | 13.2K | 3M | Jul 2002 – Aug 2026 |
| Hubberd, William "C" G-4-189398 | Columbus Energy, LLC | Liz (8100) | 1 | 13.2K | 2.18M | Mar 2002 – Aug 2026 |
| Williamson, H. Stanley "B" G-4-145155 | Bluestone Natural Res. II, LLC | Cinco Compadres (Lobo) | 1 | 13.2K | 2.15M | Feb 1993 – Aug 2013 |
| Webb County School Land 504 G-1-279102 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 13.2K | 4.03M | Apr 2016 – Aug 2026 |
| Bruni Mineral Trust G-4-157551 | Hilcorp Energy Company | Liz (9200) | 1 | 13.2K | 4.4M | Mar 1996 – Aug 2026 |
| Vergara G-4-156521 | Conocophillips Company | Vaquillas Ranch (Lobo Cons.) | 1 | 13.2K | 1.38M | Dec 1995 – Aug 1998 |
| Carr, W.R. et Al G-4-147575 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 13.2K | 301K | Nov 1993 – Nov 2002 |
| Galvan Ranch G-1-281135 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 13.1K | 2.22M | May 2017 – Aug 2026 |
| Puig "C" G-4-262999 | Killam Oil Co., Ltd. | Davis (Hinnant 1ST, North) | 1 | 13.1K | 1.03M | Jun 2011 – Aug 2026 |
| K & H Fee "2042" G-4-166438 | Killam Oil Co., Ltd. | B.M.T. (Lobo Cons.) | 1 | 13.1K | 2.13M | Dec 1997 – Aug 2026 |
| Winch G-4-262509 | Tare Resources, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 13.1K | 728K | Jun 2011 – Aug 2026 |
| Galvan Ranch G-1-270143 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 13.1K | 3.08M | Aug 2012 – Mar 2026 |
| Hirsch Estate 2071 G-4-169529 | Conocophillips Company | Big Cowboy (Lobo) | 1 | 13.1K | 394K | May 1998 – Apr 2001 |
| James Trust G-1-279455 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 13.1K | 3.85M | Jul 2015 – Aug 2026 |
| Frost, P.M. G-4-108135 | Hugoton Operating Company, Inc. | Ruffle (Lobo) | 1 | 13.1K | 1.03M | by Jan 1993 – Apr 2019 |
| Chevron - Carr, Edith G-4-172470 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 13K | 1.81M | Feb 1999 – Jun 2026 |
| B.M.T. G-4-190232 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 13K | 2.65M | Jul 2002 – Aug 2026 |
| Day G-4-145794 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 13K | 2.63M | Jun 1993 – Aug 2026 |
| Brask G-4-301855 | Lewis Petro Properties, Inc. | Hawkville (Austin Chalk) | 1 | 13K | 1.38M | Feb 2026 – Aug 2026 |
| Long, A. G. Heirs G-1-269907 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 12.9K | 965K | Dec 2012 – Aug 2026 |
| Galvan Ranch G-1-264977 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 12.9K | 487K | Aug 2011 – Oct 2014 |
| Benavides, Rosa V. B3 G-4-138479 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 12.9K | 1.05M | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-247408 | Aldine Oil and Gas, LP | Beccero Creek (Lobo Cons.) | 1 | 12.9K | 1.51M | Jan 2009 – Aug 2026 |
| Galvan Ranch G-1-274784 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 12.9K | 6.58M | May 2014 – Aug 2026 |
| Carr G-4-161721 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.9K | 3.47M | Dec 1996 – Aug 2026 |
| Vaquilllas Ranch A3 G-4-191673 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.9K | 371K | Sep 2002 – Aug 2026 |
| Russell - Winch State G-4-128572 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 12.9K | 1.62M | by Jan 1993 – Aug 2026 |
| Hubberd, William "D3" G-4-191411 | Columbus Energy, LLC | Hubberd (Lobo) | 1 | 12.8K | 4.48M | May 2002 – May 2026 |
| Kirkpatrick "A" O-4-13103 | Double C Production, LLC | Tal Vez (Rosenberg) | 1 | 12.8K | 0 | Sep 2002 – Aug 2026 |
| Frost Trust 29 G-4-187600 | EOG Resources, Inc. | Tiffany (Wilcox Carrizo) | 1 | 12.8K | 746K | Feb 2002 – Jan 2010 |
| VT Lundell Minerals G-4-100339 | Lewis Petro Properties, Inc. | Vaquillas Ranch (Lobo Cons.) | 1 | 12.8K | 797K | by Jan 1993 – Jul 2026 |
| Russell-Winch G-4-108652 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 12.8K | 553K | by Jan 1993 – Apr 2022 |
| Vaquillas Ranch Co., Ltd. G-4-109793 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.8K | 3.29M | by Jan 1993 – Aug 2026 |
| Chevron - Edith Carr G-4-161479 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 12.8K | 4.31M | Nov 1996 – Aug 2026 |
| Petty, O.S. O-1-14386 | Petropoint Energy Operating, LLC | Catarina, SW (San Miguel,oil) | 1 | 12.7K | 67.5K | Oct 2002 – Jul 2014 |
| Benavides, Rosa V. A G-4-159351 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 12.7K | 1.96M | Jun 1996 – Aug 2026 |
| Lincoln, W.P. 2345 G-4-143014 | Conoco Inc. | Big Cowboy (Lobo) | 1 | 12.7K | 1.02M | by Jan 1993 – May 1997 |
| Lundell G-4-118543 | Conocophillips Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.7K | 1.94M | by Jan 1993 – Oct 2007 |
| Vaquillas G-4-248496 | Hilcorp Energy Company | Tiffany (Wilcox Carrizo) | 1 | 12.7K | 261K | Aug 2008 – Jun 2026 |
| Pescadito State 2024 G-4-265616 | Killam Oil Co., Ltd. | Umbrella, North (Lobo Cons.) | 1 | 12.7K | 793K | May 2012 – Apr 2016 |
| Briscoe B (SA1) O-1-20250 | SM Energy Company | Lorenzo (Austin Chalk) | 1 | 12.7K | 46.9K | Jan 2022 – Jan 2022 |
| Thomasma, Ray J. "B" G-4-223916 | Hilcorp Energy Company | Zwebb (10350) | 1 | 12.7K | 2.06M | May 2004 – Aug 2026 |
| Killam & Hurd Fee 1614 G-4-242314 | Killam Oil Co., Ltd. | B.M.T. (Lobo Cons.) | 1 | 12.7K | 472K | Jun 2008 – Nov 2023 |
| Vaquillas Ranch 1631A G-4-159951 | Three-C Oil and Gas | Vaquillas Ranch (Lobo) | 1 | 12.7K | 3.03M | Jul 1996 – Apr 2023 |
| Galvan Ranch G-1-281046 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 12.7K | 3.1M | Mar 2017 – Jul 2026 |
| Alley G-4-195060 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.7K | 1.74M | Apr 2003 – Aug 2026 |
| Lundell G-4-176242 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 12.7K | 2.88M | Feb 2000 – Aug 2026 |
| Hachar G-4-189724 | Columbus Energy, LLC | Laredo (Lobo) | 1 | 12.7K | 2.6M | Jan 2002 – Aug 2025 |
| Galvan Ranch G-1-268841 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 12.7K | 2.43M | Jul 2012 – Jun 2019 |