| Galvan Ranch G-1-282891 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 33K | 3.72M | May 2018 – Aug 2026 |
| Vergara, Ignacio G-4-159468 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 32.9K | 1.16M | Aug 1996 – Aug 2026 |
| Piloncillo G-1-271867 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 32.9K | 381K | Sep 2013 – Jun 2026 |
| Long, A. G. Heirs 'A' G-1-293043 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 32.9K | 1.51M | May 2022 – Aug 2026 |
| Rosario Cattle Co. G-4-168454 | Varas Energy Operating Company, | Cuba Libre (3RD Hinnant) | 1 | 32.9K | 2.82M | May 1998 – Jul 2024 |
| Russell - Winch G-4-196183 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 32.8K | 2.07M | Jun 2003 – Jul 2026 |
| Carr "B" G-4-140932 | Conoco Inc. | Vaquillas Ranch (Lobo 8100) | 1 | 32.8K | 3.08M | by Jan 1993 – Oct 1996 |
| Briscoe G G-1-269618 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 32.8K | 528K | Sep 2012 – Aug 2026 |
| Dawson 1352 G-1-291358 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 32.7K | 3.38M | Jul 2021 – Aug 2026 |
| Killam, R. "1860" G-4-158633 | Killam Oil Co., Ltd. | Benavides (Lobo Cons.) | 1 | 32.7K | 3.13M | Apr 1996 – Apr 2022 |
| San Ambrosia F (SA18) G-1-280999 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 32.7K | 368K | Nov 2015 – Nov 2025 |
| Gates 09 Rose a BVP G-4-274495 | Rosetta Resources Operating LP | Gates Ranch (Eagle Ford Shale) | 1 | 32.6K | 1.07M | May 2014 – Aug 2026 |
| Garcia O-4-13617 | Killam Oil Co., Ltd. | Dulup | 5 | 32.6K | 0 | Aug 2010 – Aug 2026 |
| Volpe, L., Etal O-4-3867 | Finaly Resources LLC | Biel (1000 Sand) | 2 | 32.5K | 21 | by Jan 1993 – Dec 2022 |
| Lundell G-4-169944 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 32.5K | 2.25M | Aug 1998 – Jan 2013 |
| Vergara G-4-156921 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 32.5K | 2.34M | Jan 1996 – Aug 2026 |
| Galvan Ranch G-1-268492 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 32.5K | 4.77M | Jul 2012 – Aug 2026 |
| Briscoe "D" G-4-144466 | Mountain V Texas, LLC | Black Creek (Lobo) | 1 | 32.4K | 5.22M | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-282622 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 32.4K | 500K | Mar 2017 – Feb 2018 |
| Benavides, Rosa V. E G-4-223042 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 32.3K | 2.66M | May 2006 – Aug 2026 |
| Galvan Ranch G-1-299484 | Caturus Energy, LLC | Lorenzo (Austin Chalk) | 1 | 32.3K | 1.15M | Aug 2025 – Aug 2026 |
| Galvan Ranch G-1-271524 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 32.3K | 4.25M | Mar 2013 – Jul 2020 |
| Agave C G-1-295815 | EOG Resources, Inc. | Briscoe Ranch (Eagleford) | 1 | 32.2K | 834K | Aug 2023 – Aug 2026 |
| Briscoe R G-1-276901 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 32.2K | 1.81M | Jan 2015 – Jun 2021 |
| Briscoe Chupadera Ranch A G-1-284463 | Javelin Energy Partners Mgmt LLC | Briscoe Ranch (Eagleford) | 1 | 32.1K | 409K | Dec 2017 – Aug 2026 |
| Briscoe R G-1-264517 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 32.1K | 3.68M | Nov 2011 – Aug 2026 |
| James Trust G-1-279005 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 31.9K | 4.18M | Jun 2015 – Aug 2026 |
| Gates "N" TR4 G-4-289019 | Lewis Petro Properties, Inc. | Gold River, North (Olmos) | 1 | 31.9K | 1.59M | Aug 2019 – Aug 2025 |
| Carr G-4-175547 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 31.9K | 1.83M | Jan 2000 – Aug 2026 |
| Gates 05-D G-1-256198 | Rosetta Resources Operating LP | Hawkville (Eagleford Shale) | 1 | 31.9K | 641K | Feb 2010 – Sep 2010 |
| B.M.T. G-4-181931 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 31.9K | 3.48M | Mar 2001 – Aug 2026 |
| Lod Moglia et Al O-4-10532 | Three-C Oil and Gas | Moglia (1580) | 1 | 31.9K | 205 | by Jan 1993 – Apr 2024 |
| Galvan Ranch G-1-277228 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 31.7K | 1.73M | Sep 2014 – Aug 2026 |
| B.M.T. A G-4-212884 | Hilcorp Energy Company | B.M.T. (Middle Wilcox) | 1 | 31.7K | 2.45M | Sep 2005 – Aug 2026 |
| Galvan Ranch G-1-281188 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 31.7K | 1.42M | Sep 2016 – Feb 2024 |
| Vaquillas Ranch 1631A G-4-160974 | Three-C Oil and Gas | Vaquillas Ranch (Lobo) | 1 | 31.7K | 5.85M | Sep 1996 – Oct 2007 |
| Gates "N" TR5 G-4-289662 | Lewis Petro Properties, Inc. | Gold River, North (Olmos) | 1 | 31.7K | 1.25M | Oct 2019 – Aug 2026 |
| Galvan Ranch G-1-264809 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 31.7K | 6.14M | Nov 2011 – Aug 2026 |
| Hereford -T- G-4-168181 | Merit Energy Company | Bashara-Hereford (7300) | 1 | 31.6K | 6.28M | Apr 1998 – Aug 2026 |
| Santa Elena G-4-274270 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 31.6K | 3.76M | Dec 2013 – Aug 2026 |
| Prevost G-4-158034 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 31.6K | 4.13M | Feb 1996 – Aug 2026 |
| Galvan Ranch G-1-271541 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 31.6K | 6.86M | Mar 2013 – Aug 2026 |
| Benavides, AN/CY F G-4-218395 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 31.4K | 1.61M | Dec 2005 – Aug 2026 |
| Dawson 1352 G-1-291353 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 31.4K | 2.69M | Jul 2021 – Aug 2026 |
| Galvan Ranch G-1-290969 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 31.4K | 6.02M | Nov 2021 – Aug 2026 |
| Vergara, Ignacio G-4-173982 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 31.4K | 5.02M | Aug 1999 – Aug 2026 |
| Piloncillo G-1-267077 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 31.3K | 358K | Feb 2012 – Apr 2026 |
| Killam Gonzalez 1485 G-4-272650 | Lewis Petro Properties, Inc. | Tom Walsh (Olmos) | 1 | 31.3K | 1.09M | Aug 2013 – Aug 2026 |
| Piloncillo G-1-266133 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 31.3K | 591K | Mar 2011 – Aug 2026 |
| Lechenger G-4-168015 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 31.2K | 2.17M | Apr 1998 – Aug 2026 |