| Bruni, A. M. G-4-167326 | BZG E&P LLC | Presa de Oro (Lobo No. 6) | 1 | 21.1K | 2.88M | Mar 1998 – Jun 2023 |
| Killam and Hurd Fee 1200 G-4-204437 | Killam Oil Co., Ltd. | Umbrella, North (Lobo Cons.) | 1 | 21.1K | 1.39M | Sep 2004 – Jan 2016 |
| Las Raices Ranch G-4-261537 | XTO Energy Inc. | Gates Ranch (Eagle Ford Shale) | 1 | 21.1K | 970K | Jan 2011 – Nov 2025 |
| Applegate 2367 G-4-161116 | EOG Resources, Inc. | Vaquillas Ranch (Lobo Cons.) | 1 | 21.1K | 1.67M | Oct 1996 – Aug 2009 |
| Leyendecker-Hunter 1377 G-1-270667 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 21.1K | 3.44M | Jul 2012 – Aug 2026 |
| Lincoln, W.P. 1312 G-4-116945 | Hilcorp Energy Company | Big Cowboy (Lobo) | 1 | 21K | 2.62M | by Jan 1993 – Aug 2026 |
| Galvan Ranch G-1-279676 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 21K | 3.64M | Jun 2015 – Aug 2026 |
| Las Raices Ranch G-4-265615 | XTO Energy Inc. | Gates Ranch (Eagle Ford Shale) | 1 | 21K | 1.08M | Jan 2012 – Aug 2026 |
| James Trust G-1-279208 | Lewis Petro Properties, Inc. | Hawkville (Eagleford Shale) | 1 | 21K | 3.51M | Jun 2015 – Aug 2026 |
| Gates 07-Dr G-1-279318 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 21K | 120K | Jul 2026 – Aug 2026 |
| Rottersmann 250 G-4-167256 | EOG Resources, Inc. | Lilia (Wilcox) | 1 | 21K | 1.92M | Jan 1998 – Nov 2012 |
| San Ambrosia F (SA29) O-1-20383 | SM Energy Company | Lorenzo (Austin Chalk) | 1 | 21K | 69.7K | Jan 2022 – Jan 2022 |
| Killam & Hurd Ltd. Fee O-4-11475 | L.T.D. Explorations Inc. | Zimet (Yegua -G-) | 2 | 21K | 144 | by Jan 1993 – Sep 2005 |
| Hirsch Estate 517 G-4-183728 | Hilcorp Energy Company | Big Cowboy (Lobo) | 1 | 21K | 696K | Mar 2001 – Feb 2006 |
| Slaughter, Lilia Bruni G-4-175423 | Killam Oil Co., Ltd. | Moritas Creek (8500) | 1 | 20.9K | 2.28M | Sep 1999 – Aug 2026 |
| Hubberd T G-4-167093 | Columbus Energy, LLC | Hubberd (Lobo) | 1 | 20.9K | 1.72M | Feb 1998 – Aug 2026 |
| Hirsch Estate 537 G-4-170511 | Hilcorp Energy Company | Big Cowboy (Lobo) | 1 | 20.9K | 811K | Sep 1998 – Aug 2026 |
| Carr G-4-147809 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 20.9K | 1.23M | Dec 1993 – Aug 2026 |
| Killam & Hurd Ltd. Fee O-4-8487 | L.T.D. Explorations Inc. | Zimet (Yegua -F-) | 1 | 20.9K | 144 | by Jan 1993 – Sep 2005 |
| Olmitos Ranch G-4-109373 | Proline Energy Resources Inc | Vaquillas Ranch (Lobo Cons.) | 1 | 20.9K | 800K | by Jan 1993 – Dec 2025 |
| Lundell G-4-169865 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 20.8K | 2.46M | Aug 1998 – Aug 2026 |
| Alexander, Charles G-4-165680 | Columbus Energy, LLC | Bashara-Hereford (7300) | 1 | 20.8K | 4.36M | Nov 1997 – Aug 2026 |
| Piloncillo G-1-268814 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 20.8K | 287K | Mar 2013 – Aug 2026 |
| Hirsch Estate A G-4-143419 | Hilcorp Energy Company | Big Cowboy (Lobo) | 1 | 20.8K | 2.54M | by Jan 1993 – Nov 2017 |
| Bruni Nora G-4-171700 | Arete Operating Company II, LLC | Benavides (Lobo Cons.) | 1 | 20.8K | 1.23M | Sep 1998 – Aug 2026 |
| Long, A. G. Heirs G-1-269913 | Lewis Petro Properties, Inc. | Briscoe Ranch (Eagleford) | 1 | 20.7K | 1.02M | Dec 2012 – Aug 2026 |
| McGrath G-4-200375 | Mountain V Texas, LLC | Zwebb (10350) | 1 | 20.7K | 2.39M | Mar 2004 – Jul 2026 |
| Vaquillas-State G-4-248968 | Hilcorp Energy Company | Tiffany (Wilcox Carrizo) | 1 | 20.7K | 2.41M | Apr 2009 – Aug 2026 |
| Russell - Winch G-4-132796 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | 1 | 20.7K | 2.71M | by Jan 1993 – Feb 2026 |
| Leyendecker et Al G-4-166760 | Hilcorp Energy Company | Benavides (Lobo Cons.) | 1 | 20.6K | 1.23M | Feb 1998 – Aug 2026 |
| Billings B G-4-186883 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 20.6K | 1.61M | Jan 2002 – Aug 2026 |
| Cal-Mex G-4-66404 | Columbus Energy, LLC | Laredo (Lobo) | 1 | 20.5K | 7.62M | by Jan 1993 – Aug 2026 |
| Neel G-4-268831 | Lewis Petro Properties, Inc. | Owen (Olmos) | 1 | 20.5K | 850K | Jan 2012 – Aug 2026 |
| Briscoe "E" O-4-13329 | SM Energy Company | Gold River, North (Olmos) | 3 | 20.5K | 227K | Mar 2005 – Apr 2014 |
| McKendrick, W. H. G-4-165417 | Columbus Energy, LLC | Laredo (8080) | 1 | 20.5K | 4.39M | Nov 1997 – Aug 2026 |
| Billings Ranch G-4-258833 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 20.5K | 1.17M | Dec 2010 – Aug 2026 |
| Dcrc "3E" O-4-12529 | Killam Oil Co., Ltd. | Moca | 1 | 20.4K | 8 | Feb 1996 – Aug 2026 |
| McKendrick-Akin G-4-179590 | Columbus Energy, LLC | Volz (Lobo) | 1 | 20.4K | 3.74M | Aug 2000 – Aug 2026 |
| Carr G-4-143439 | Conocophillips Company | Vaquillas Ranch (Lobo Cons.) | 1 | 20.4K | 1.45M | by Jan 1993 – Dec 2001 |
| Puig G-4-146106 | Rincon Petroleum Corporation | Muy Malo (4TH Hinnant, Lower) | 1 | 20.3K | 1.77M | Jun 1993 – Oct 2011 |
| San Ambrosia F (SA15) 13 G-1-280950 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 20.3K | 237K | Nov 2015 – May 2025 |
| Piloncillo G-1-267079 | TBM Catarina, LLC | Briscoe Ranch (Eagleford) | 1 | 20.3K | 560K | Oct 2011 – Aug 2026 |
| Pescadito State 1176 G-4-245761 | Killam Oil Co., Ltd. | Umbrella, North (Lobo Cons.) | 1 | 20.3K | 1.97M | Feb 2009 – Aug 2026 |
| Galvan Ranch G-1-290966 | Caturus Energy, LLC | Briscoe Ranch (Eagleford) | 1 | 20.2K | 5.73M | Nov 2021 – Aug 2026 |
| Lundell Ranch G-4-190439 | Hilcorp Energy Company | Vaquillas Ranch (Lobo Cons.) | 1 | 20.2K | 1.51M | Aug 2002 – Aug 2026 |
| Billings B G-4-229091 | Mountain V Texas, LLC | Tiffany (Wilcox Carrizo) | 1 | 20.2K | 1.88M | Jul 2007 – Aug 2026 |
| Briscoe "D" G-4-158102 | Mountain V Texas, LLC | Black Creek (Lobo) | 1 | 20.2K | 2.08M | Mar 1996 – Aug 2026 |
| Killam & Hurd Fee 1173 G-4-201426 | Killam Oil Co., Ltd. | Umbrella, North (Lobo Cons.) | 1 | 20.2K | 1.43M | Apr 2004 – Feb 2008 |
| K&H Fee "574" G-4-160856 | Killam Oil Co., Ltd. | Villegas (Middle Wilcox 7950) | 1 | 20.2K | 2.53M | Nov 1996 – Jan 2016 |
| Briscoe G G-1-280995 | SM Energy Company | Briscoe Ranch (Eagleford) | 1 | 20.2K | 385K | Jul 2016 – Jun 2020 |