| Palmyra Minerals, Ltd. G-4-163325 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 5.02K | 1.96M | Feb 1997 – Aug 2026 |
| Palmyra G-4-170339 | Mag Exploration LLC only | Lopeno (Consolidated) | Zapata | 1 | 3.85K | 1.35M | Aug 1998 – May 2015 |
| Esperanza G-4-181315 | Beehive Operating, LLC only | Lopeno (Consolidated) | Zapata | 1 | 2.08K | 1.06M | Jan 2001 – Aug 2024 |
| Palmyra Minerals, Ltd. G-4-161956 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 1.74K | 1.78M | Nov 1996 – Aug 2026 |
| Palmyra Minerals Ltd G-4-164387 | EOG Resources, Inc. only | Lopeno (Consolidated) | Zapata | 1 | 1.73K | 565K | Aug 1997 – Sep 2011 |
| Baltazar Ramos G-4-220127 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 1.64K | 554K | Apr 2006 – May 2026 |
| Palmyra G-4-169408 | EOG Resources, Inc. only | Lopeno (Consolidated) | Zapata | 1 | 1.18K | 878K | Jul 1998 – Sep 2011 |
| Palmyra G-4-215074 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 873 | 1.28M | Sep 2005 – Aug 2026 |
| El Milagro "B" G-4-233795 | Three C Exploration, LLC only | Lopeno (Consolidated) | Zapata | 1 | 807 | 1.18M | Jan 2008 – Feb 2016 |
| Palmyra G-4-215456 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 660 | 1.08M | Nov 2005 – Aug 2026 |
| Worley Gas Unit G-4-226729 | Ricochet Energy, Inc. only | Lopeno (Consolidated) | Zapata | 1 | 520 | 3.75M | Apr 2007 – Apr 2010 |
| Esperanza G-4-179848 | Beehive Operating, LLC only | Lopeno (Consolidated) | Zapata | 1 | 408 | 579K | Nov 2000 – Aug 2024 |
| Guerra, Raul G-4-179323 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 271 | 6.94M | May 2000 – May 2026 |
| Ramirez, Josefa G-4-180399 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 251 | 1.74M | Sep 2000 – Dec 2025 |
| Palmyra Minerals, Ltd. G-4-155715 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 247 | 3.42M | Sep 1995 – Aug 2026 |
| Ramirez, M. R. G-4-179529 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 233 | 2.89M | Jul 2000 – May 2024 |
| Ramirez, M. R. G-4-190602 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 217 | 2.08M | Oct 2001 – Apr 2007 |
| El Milagro "B" G-4-232961 | Three C Exploration, LLC only | Lopeno (Consolidated) | Zapata | 1 | 215 | 1.32M | Nov 2007 – Feb 2016 |
| Vela, J. G-4-246911 | Bustamante Oil Company only | Lopeno (Consolidated) | Zapata | 1 | 206 | 133K | Jul 2008 – Apr 2012 |
| Guerra, Raul G-4-212790 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 199 | 1.48M | May 2005 – May 2026 |
| Ramos, Felix G-4-198103 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 193 | 551K | Sep 2003 – Apr 2014 |
| Guerra, Raul G-4-186513 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 192 | 3.2M | Sep 2001 – May 2026 |
| Guerra, Raul G-4-249617 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 191 | 246K | Dec 2008 – Apr 2026 |
| Palmyra Minerals, Ltd. G-4-170947 | Acock/Anaqua Operating Co., LP only | Lopeno (Consolidated) | Zapata | 1 | 173 | 60.6K | Feb 1998 – Aug 2007 |
| Palmyra Minerals, Ltd. G-4-156168 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 173 | 5.52M | Aug 1995 – Aug 2026 |
| Palmyra Minerals, Ltd. G-4-159830 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 171 | 2.57M | Aug 1996 – Aug 2026 |
| El Milagro "B" G-4-233632 | Three C Exploration, LLC only | Lopeno (Consolidated) | Zapata | 1 | 170 | 721K | Nov 2007 – Dec 2010 |
| El Milagro "B" G-4-235282 | Three C Exploration, LLC only | Lopeno (Consolidated) | Zapata | 1 | 161 | 851K | Jan 2008 – Jul 2011 |
| Guerra, Raul G-4-177815 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 157 | 4.64M | Jun 2000 – May 2026 |
| Guerra, Raul G-4-188114 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 148 | 2.64M | Jun 2001 – May 2026 |
| Guerra, Raul G-4-127855 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 130 | 1.66M | by Jan 1993 – May 2026 |
| Guerra, Avelina G-4-163335 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 116 | 7.3M | Apr 1997 – May 2026 |
| Ramos, Felix G-4-153559 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 116 | 4.44M | Feb 1995 – Sep 2024 |
| Guerra, Raul G-4-176543 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 110 | 2.66M | Dec 1999 – May 2026 |
| Ramirez, M. R. G-4-179188 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 105 | 2.5M | Jul 2000 – Jul 2024 |
| Munoz, Fernando G-4-190707 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 104 | 2.96M | Jun 2002 – May 2026 |
| Guerra, Avelino G-4-179421 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 102 | 1.14M | Sep 2000 – Jun 2009 |
| Ramirez, M.R. G-4-129645 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 102 | 3.21M | by Jan 1993 – Jul 2024 |
| Ramos, Baltazar G-4-191850 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 101 | 2.64M | Sep 2002 – May 2026 |
| Worley Gas Unit G-4-235722 | Hilcorp Energy Company only | Lopeno (Consolidated) | Zapata | 1 | 97 | 2.97M | Nov 2007 – Aug 2021 |
| Palmyra G-4-217107 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 92 | 754K | Jan 2006 – Aug 2026 |
| Palmyra G-4-217017 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 89 | 536K | Feb 2006 – Aug 2026 |
| Yzaguirre G-4-160655 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 89 | 2.33M | Jul 1996 – Aug 2026 |
| Fernando Munoz G. U. G-4-161962 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 88 | 6.18M | Nov 1996 – May 2026 |
| Guerra, Raul G-4-193940 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 87 | 1.25M | Dec 2002 – May 2026 |
| Guerra, Raul G-4-155182 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 69 | 1.96M | Aug 1995 – Aug 2026 |
| Palmyra Minerals Ltd. G-4-156731 | Varas Energy Operating Company, only | Lopeno (Consolidated) | Zapata | 1 | 69 | 1.85M | Dec 1995 – Aug 2026 |
| Ramos, Felix G-4-164394 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 63 | 4.05M | Sep 1997 – May 2026 |
| Guerra, Raul G-4-178068 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 63 | 2.27M | Apr 2000 – May 2026 |
| Ramos, Felix G-4-219772 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 61 | 2.5M | May 2006 – May 2026 |