| Piloncillo G-1-268880 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 18.1K | 269K | Mar 2013 – Aug 2026 |
| Carr G-4-149435 | Conocophillips Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18.1K | 1.01M | Apr 1994 – Dec 1998 |
| Dix Ranch-State E G-4-143729 | Conoco Inc. | Dix Ranch (Lower Wilcox Lobo) | 1 | 18.1K | 1.36M | by Jan 1993 – Mar 1996 |
| Billings AB GU G-4-221389 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 18.1K | 4.33M | Jul 2006 – May 2014 |
| Gates 11-Dr C G-1-302260 | Lewis Petro Properties, Inc. | Lorenzo (Austin Chalk) | 1 | 18.1K | 155K | May 2026 – Jul 2026 |
| Briscoe R (SA2) G-1-281005 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 18.1K | 369K | Jul 2016 – Mar 2022 |
| San Roman 1508 G-4-268969 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 18K | 3.12M | Jan 2013 – Aug 2026 |
| San Roman 1508 G-4-274185 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 18K | 1.98M | Nov 2013 – Aug 2026 |
| McKendrick, W.H. G-4-153479 | Columbus Energy, LLC | Hereford (Lobo) | 1 | 18K | 2.31M | Feb 1995 – Mar 2003 |
| B. M. T. G-4-190242 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 18K | 1.75M | Jul 2002 – Aug 2026 |
| Alley G-4-143611 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 18K | 1.31M | by Jan 1993 – Nov 2013 |
| South Marshall St Wells Fargo GU G-4-208780 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 18K | 1.04M | Mar 2005 – Dec 2019 |
| Santa Elena G-4-275615 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 18K | 2.53M | Aug 2014 – Aug 2026 |
| Lechenger G-4-157501 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 18K | 2.08M | Mar 1996 – Aug 2026 |
| Webb County School Board G-4-270826 | Aldine Oil and Gas, LP | Beccero Creek (Lobo Cons.) | 1 | 18K | 1.66M | Aug 2013 – Aug 2026 |
| Billings B G-4-252965 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 18K | 1.22M | Oct 2009 – Aug 2026 |
| Hachar, D. D. G-4-66575 | Columbus Energy, LLC | Laredo (Lobo) | 1 | 18K | 4.46M | by Jan 1993 – Nov 2024 |
| Ohern Field Unit O-4-3898 | Methane Companies, Inc The | Ohern | 42 | 18K | 26 | by Jan 1993 – Feb 1998 |
| BMT/K&H G-4-178588 | Mountain V Texas, LLC | Zwebb (10350) | 1 | 17.9K | 4M | Aug 2000 – Aug 2026 |
| Villarreal-Leyendecker Gas Unit G-4-162121 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.9K | 2.66M | Feb 1997 – Jan 2021 |
| Webb County School Land 504 G-1-279363 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 17.9K | 5.59M | Apr 2016 – Aug 2026 |
| Vaquillas Ranch A1 G-4-211623 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 17.9K | 985K | Mar 2005 – Aug 2026 |
| Killam-Hurd-Amoco G-4-103036 | Killam Oil Co., Ltd. | Casa Verde (Hirsch Lower) | 1 | 17.9K | 6.34M | by Jan 1993 – Aug 2026 |
| Vaquillas Ranch A1 G-4-195082 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 17.8K | 633K | Apr 2003 – Aug 2026 |
| B.M.T. G-4-169482 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 17.8K | 7.35M | Jul 1998 – Aug 2026 |
| Benavides, Rosa V. E G-4-231325 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.7K | 1.4M | Mar 2007 – Aug 2026 |
| Codigo G-1-295562 | EOG Resources, Inc. | Briscoe Ranch (Eagleford) | 1 | 17.7K | 367K | Aug 2023 – Aug 2026 |
| B. M. T. A G-4-178489 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 17.7K | 5.47M | Aug 2000 – Aug 2026 |
| Benavides, Rosa V. B G-4-152518 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.7K | 805K | Dec 1994 – Aug 2026 |
| Long, J. S. G-4-270106 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 17.7K | 963K | Jun 2013 – Jul 2026 |
| Briscoe C (SA8) O-1-20410 | SM Energy Company | Lorenzo (Austin Chalk) | 1 | 17.7K | 58K | Jan 2022 – Jan 2022 |
| Vaquillas Ranch Co. Ltd. G-4-180505 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 17.7K | 2.96M | Nov 2000 – Aug 2026 |
| James Trust G-1-279296 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 17.7K | 4.15M | Jun 2015 – Aug 2026 |
| Vergara, L. B. State G-4-174001 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 17.6K | 4.72M | Aug 1999 – Aug 2026 |
| Lechenger G-4-141881 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.6K | 1.24M | by Jan 1993 – Aug 2026 |
| B.M.T. G-4-172534 | Hilcorp Energy Company | B.M.T. (Lobo Cons.) | 1 | 17.6K | 3.84M | Dec 1998 – Aug 2026 |
| Alley G-4-183959 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 17.6K | 2.3M | Jul 2001 – Aug 2026 |
| James Trust G-1-287462 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 17.6K | 7.2M | Jul 2019 – Aug 2026 |
| Benavides, A.N./C.Y. F G-4-141083 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.6K | 1.63M | by Jan 1993 – Aug 2026 |
| Killam & Hurd "1690" G-4-164125 | Killam Oil Co., Ltd. | B.M.T. (Lobo Cons.) | 1 | 17.6K | 823K | Jun 1997 – Aug 2006 |
| Briscoe G G-1-272085 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 17.5K | 91.1K | Jul 2013 – Mar 2016 |
| Piloncillo G-1-266152 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 17.5K | 485K | Oct 2011 – Aug 2026 |
| Galvan Ranch G-1-280689 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 17.5K | 5.76M | Jun 2015 – Aug 2026 |
| BMT G-4-163684 | Columbus Energy, LLC | Clark Ranch (Lobo) | 1 | 17.5K | 2.77M | Jul 1997 – Aug 2026 |
| Galvan Ranch G-1-271521 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 17.5K | 6.04M | Mar 2013 – Aug 2026 |
| Dawson 360 G.U. G-1-269925 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 17.5K | 1.69M | Apr 2013 – Aug 2026 |
| Macmahon, P. A. G-4-85282 | Chevron U. S. A. Inc. | Laredo (Lobo) | 1 | 17.5K | 2.98M | by Jan 1993 – Oct 2007 |
| Killam-Hurd-Amoco G-4-103352 | Killam Oil Co., Ltd. | Casa Verde (Hirsch Lower) | 1 | 17.4K | 3.73M | by Jan 1993 – Aug 2026 |
| Monnich Gas Unit G-1-264756 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 17.4K | 1.75M | Jan 2012 – Aug 2026 |
| Benavides, Rosa V. B2 G-4-102280 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 17.4K | 2.49M | by Jan 1993 – Aug 2026 |