| Guerra, M. G-4-166580 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 151K | 14M | Jan 1997 – Apr 2026 |
| Vela Estate G-4-148956 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 33.4K | 5.18M | Jan 1994 – Apr 2026 |
| Guerra-Raymond G-4-165873 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 33.3K | 4.6M | Sep 1997 – Apr 2026 |
| Galo G-4-225605 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 28.1K | 6.48M | Dec 2006 – Apr 2026 |
| Vela G-4-166711 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 27.6K | 12.2M | Sep 1997 – Apr 2026 |
| Red Crest Trust G-4-213498 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 25.5K | 2.5M | Jul 2005 – Apr 2026 |
| Garcia, Salvador "E" G-4-112962 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 23.1K | 5.18M | Jan 1993 – Apr 2026 |
| Guerra L G-4-251536 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 23K | 2.89M | Jan 2008 – Apr 2026 |
| Gutierrez et Al G-4-216354 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 20.3K | 2.11M | Dec 2005 – Apr 2026 |
| Whittier G-4-224786 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 20.2K | 3.88M | Dec 2006 – Apr 2026 |
| Vela, A. G-4-122547 | Proline Energy Resources Inc only | Roleta (Wilcox Consolidated) | Zapata | 1 | 19.4K | 3.08M | Jan 1993 – May 2021 |
| Galo G-4-230371 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 19K | 2.52M | Jul 2007 – Apr 2026 |
| Vela, Serapio Heirs B G-4-180943 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 18.7K | 4.74M | Jan 2001 – Apr 2026 |
| JMV Unit G-4-169600 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 18.2K | 2.47M | Jun 1998 – Apr 2026 |
| Vela Estate G-4-162066 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 17.6K | 5.58M | Nov 1996 – Apr 2026 |
| Vela Estate G-4-164382 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 17.6K | 6.7M | Feb 1997 – Apr 2026 |
| Guerra "L" G-4-111421 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 17.5K | 4.38M | Jan 1993 – Apr 2026 |
| Vela, Serapio B G-4-173977 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 17.1K | 1.12M | Jul 1999 – Apr 2026 |
| Salinas, G. G. G-4-215451 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 16.5K | 1.27M | Nov 2005 – Apr 2026 |
| Vela Estate G-4-165921 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 16.3K | 3.14M | Jul 1997 – Apr 2026 |
| Vela, Antonio G-4-95206 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 16.1K | 3.63M | Jan 1993 – Apr 2026 |
| Dominguez G-4-214177 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 15.8K | 1.72M | Oct 2005 – Apr 2026 |
| Hilario, Don "A" G-4-241759 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 15.7K | 6.82M | Aug 2008 – Apr 2026 |
| Guerra L G-4-243248 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 15.6K | 5.95M | May 2008 – Apr 2026 |
| Don Jose Land & Cattle Co Ltd G-4-251547 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 15.6K | 2.41M | Oct 2007 – Apr 2026 |
| Guerra G-4-171981 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 14.8K | 2.13M | Feb 1998 – Apr 2026 |
| Gutierrez et Al G-4-228854 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 13.2K | 984K | Jul 2007 – Apr 2026 |
| Guerra G-4-168978 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 13.2K | 2.05M | Dec 1997 – Apr 2026 |
| Vela Estate G-4-133353 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 12.7K | 1.72M | Jan 1993 – Jul 2020 |
| Vela, Serapio Heirs GU "D" G-4-121048 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 12.5K | 2.07M | Jan 1993 – Apr 2026 |
| El Clareno G-4-232662 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 11.4K | 2.57M | Oct 2007 – Apr 2026 |
| Vela Estate G-4-164488 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 11.3K | 2.25M | Feb 1997 – Apr 2026 |
| Whittier G-4-221851 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 11.3K | 890K | Aug 2006 – Apr 2026 |
| Vela Estate G-4-114256 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 10.2K | 3.54M | Jan 1993 – Apr 2026 |
| Garcia, Salvador "A" G-4-124547 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 10K | 1.63M | Jan 1993 – Apr 2026 |
| Guerra-Raymond Gas Unit G-4-167991 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 9.83K | 750K | Aug 1997 – Apr 2026 |
| Galo G-4-242082 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 9.7K | 1.16M | Sep 2008 – Apr 2026 |
| Lopez G-4-211548 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 9.5K | 1.63M | Sep 2005 – Apr 2026 |
| Gutierrez et Al G-4-216340 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.96K | 1.3M | Dec 2005 – Apr 2026 |
| Don Jose Land & Cattle Co Ltd G-4-250598 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.7K | 2.26M | Sep 2008 – Apr 2026 |
| Don Jose Land & Cattle Co Ltd G-4-243081 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.61K | 2.19M | Jun 2008 – Apr 2026 |
| Dominguez G-4-218747 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.37K | 855K | Dec 2005 – Apr 2026 |
| Don Hilario "A" G-4-250565 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.1K | 3.38M | Jul 2009 – Apr 2026 |
| Smith, A.H. G-4-206995 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8.06K | 1.81M | Jan 2005 – Apr 2026 |
| Garcia, Salvador B G-4-144220 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.91K | 604K | Feb 1993 – Apr 2026 |
| Dodier "A" G-4-259756 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.88K | 1.68M | Jan 2011 – Apr 2026 |
| Vela, G. O. G-4-187697 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.76K | 983K | Feb 2002 – Apr 2026 |
| Garcia, Salvador "D" G-4-105506 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.56K | 1.36M | Jan 1993 – Jul 2024 |
| J. G. Benavides Gas Unit G-4-136213 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.54K | 4.74M | Jan 1993 – Jan 2026 |
| Benavides "A" G-4-248994 | Merit Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 7.48K | 1.14M | May 2009 – Apr 2026 |