| Vela-Lopeno Minerals Ltd G-4-193147 | Lopeno ( Reklaw B) | Zapata | 1 | 11.3K | 3.88M | Aug 2002 – Apr 2026 |
| Baltazar Ramos G-4-220127 | Lopeno (Consolidated) | Zapata | 1 | 1.64K | 554K | Apr 2006 – Apr 2026 |
| Guerra, Raul G-4-179323 | Lopeno (Consolidated) | Zapata | 1 | 271 | 6.94M | May 2000 – Apr 2026 |
| Guerra, Raul G-4-212790 | Lopeno (Consolidated) | Zapata | 1 | 199 | 1.48M | May 2005 – Apr 2026 |
| Guerra, Raul G-4-186513 | Lopeno (Consolidated) | Zapata | 1 | 192 | 3.2M | Sep 2001 – Apr 2026 |
| Guerra, Raul G-4-249617 | Lopeno (Consolidated) | Zapata | 1 | 191 | 246K | Dec 2008 – Apr 2026 |
| Guerra, Raul G-4-177815 | Lopeno (Consolidated) | Zapata | 1 | 157 | 4.64M | Jun 2000 – Apr 2026 |
| Guerra, Raul G-4-188114 | Lopeno (Consolidated) | Zapata | 1 | 148 | 2.64M | Jun 2001 – Apr 2026 |
| Guerra, Raul G-4-127855 | Lopeno (Consolidated) | Zapata | 1 | 130 | 1.66M | Jan 1993 – Apr 2026 |
| Guerra, Avelina G-4-163335 | Lopeno (Consolidated) | Zapata | 1 | 116 | 7.3M | Apr 1997 – Apr 2026 |
| Guerra, Raul G-4-176543 | Lopeno (Consolidated) | Zapata | 1 | 110 | 2.66M | Dec 1999 – Apr 2026 |
| Munoz, Fernando G-4-190707 | Lopeno (Consolidated) | Zapata | 1 | 104 | 2.96M | Jun 2002 – Apr 2026 |
| Ramos, Baltazar G-4-191850 | Lopeno (Consolidated) | Zapata | 1 | 101 | 2.64M | Sep 2002 – Apr 2026 |
| Fernando Munoz G. U. G-4-161962 | Lopeno (Consolidated) | Zapata | 1 | 88 | 6.18M | Nov 1996 – Apr 2026 |
| Guerra, Raul G-4-193940 | Lopeno (Consolidated) | Zapata | 1 | 87 | 1.25M | Dec 2002 – Apr 2026 |
| Ramos, Felix G-4-164394 | Lopeno (Consolidated) | Zapata | 1 | 63 | 4.04M | Sep 1997 – Apr 2026 |
| Guerra, Raul G-4-178068 | Lopeno (Consolidated) | Zapata | 1 | 63 | 2.27M | Apr 2000 – Apr 2026 |
| Ramos, Baltazar G-4-179209 | Lopeno (Consolidated) | Zapata | 1 | 61 | 6.25M | May 2000 – Apr 2026 |
| Ramos, Felix G-4-219772 | Lopeno (Consolidated) | Zapata | 1 | 61 | 2.5M | May 2006 – Apr 2026 |
| Munoz, Fernando G-4-186508 | Lopeno (Consolidated) | Zapata | 1 | 49 | 4.38M | Aug 2001 – Apr 2026 |
| Guerra, Avelino G-4-161358 | Lopeno (Consolidated) | Zapata | 1 | 47 | 9.32M | Oct 1996 – Apr 2026 |
| Guerra, Raul G-4-161346 | Lopeno (Consolidated) | Zapata | 1 | 38 | 8.54M | Dec 1996 – Apr 2026 |
| Fernando Munoz Gas Unit G-4-179817 | Lopeno (Consolidated) | Zapata | 1 | 30 | 3.49M | Jul 2000 – Apr 2026 |
| Ramirez, Federico G-4-127850 | Lopeno (Consolidated) | Zapata | 1 | 29 | 8.4M | Jan 1993 – Apr 2026 |
| Guerra, Avelino G-4-183916 | Lopeno (Consolidated) | Zapata | 1 | 27 | 1.39M | Mar 2001 – Apr 2026 |
| Guerra, Avelino G-4-117458 | Lopeno (Consolidated) | Zapata | 1 | 26 | 1.07M | Jan 1993 – Apr 2026 |
| Ramirez, Federico G-4-189841 | Lopeno (Consolidated) | Zapata | 1 | 21 | 3.57M | Feb 2002 – Apr 2026 |
| Ramirez, Federico G-4-187365 | Lopeno (Consolidated) | Zapata | 1 | 20 | 5.28M | Oct 2001 – Apr 2026 |
| Yzaguirre G-4-204756 | Lopeno (Consolidated) | Zapata | 1 | 19 | 1.81M | Sep 2004 – Apr 2026 |
| Fernando Munoz Gas Unit 3 G-4-194552 | Lopeno (Consolidated) | Zapata | 1 | 17 | 3.27M | Apr 2003 – Apr 2026 |
| Ramirez, Blas G-4-93342 | Lopeno (Consolidated) | Zapata | 1 | 14 | 2.42M | Jan 1993 – Apr 2026 |
| Guerra, Raul G-4-166806 | Lopeno (Consolidated) | Zapata | 1 | 11 | 1.05M | Nov 2000 – Apr 2026 |
| Ramos, Baltazar G-4-11546 | Lopeno (Consolidated) | Zapata | 1 | 11 | 1.18M | Jan 1993 – Apr 2026 |
| Ramos, Baltazar et Al G-4-120605 | Lopeno (Consolidated) | Zapata | 1 | 11 | 1.63M | Jan 1993 – Apr 2026 |
| Serna, Donato G-4-191625 | Lopeno (Consolidated) | Zapata | 1 | 10 | 990K | Apr 2002 – Apr 2026 |
| Serna, Donata G-4-189565 | Lopeno (Consolidated) | Zapata | 1 | 7 | 1.21M | May 2002 – Apr 2026 |
| Munoz, Fernando G-4-242203 | Lopeno (Consolidated) | Zapata | 1 | 7 | 1.22M | Aug 2008 – Apr 2026 |
| Ramirez, Josefa G-4-30390 | Lopeno ( Reklaw B) | Zapata | 1 | 5 | 472K | Jan 1993 – Apr 2026 |
| Guerra, Avelina G-4-170486 | Lopeno (Consolidated) | Zapata | 1 | 5 | 3.31M | Aug 1998 – Apr 2026 |
| Ramirez, Josefa G-4-129648 | Lopeno (Consolidated) | Zapata | 1 | 4 | 161K | Dec 2002 – Apr 2026 |
| Ramirez, Josefa G-4-166019 | Lopeno (Consolidated) | Zapata | 1 | 3 | 739K | Dec 1997 – Apr 2026 |
| Munoz, Fernando G-4-179844 | Lopeno (Consolidated) | Zapata | 1 | 3 | 989K | Oct 2000 – Apr 2026 |
| Avelino Guerra Gas Unit NO.2 G-4-179968 | Lopeno (Consolidated) | Zapata | 1 | 3 | 347K | Jun 2002 – Apr 2026 |
| Guerra, Avelino G-4-251689 | Lopeno (Consolidated) | Zapata | 1 | 2 | 1.52M | Oct 2008 – Apr 2026 |
| Yzaguirre G-4-199383 | Lopeno (Consolidated) | Zapata | 1 | 2 | 2.69M | Jan 2004 – Apr 2026 |
| Ramirez, Federico G-4-182159 | Lopeno (Consolidated) | Zapata | 1 | 2 | 3.39M | Feb 2001 – Apr 2026 |
| Guerra, Avelino G-4-245801 | Lopeno (Consolidated) | Zapata | 1 | 0 | 684K | Oct 2008 – Apr 2026 |
| Ramirez, M. R. G-4-171958 | Lopeno (Consolidated) | Zapata | 1 | 0 | 1.48M | Dec 1998 – Apr 2026 |
| Ramos, Baltazar G-4-188134 | Lopeno (Consolidated) | Zapata | 1 | 9 | 2.06M | Feb 2002 – Jan 2026 |
| Ramos, Baltazar G-4-214032 | Lopeno (Consolidated) | Zapata | 1 | 0 | 792K | Jun 2005 – Jan 2026 |