| Red Crest Trust G-4-213498 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 25.5K | 2.5M | Jul 2005 – Aug 2026 |
| Benavides Trust G-4-193953 | Merit Energy Company only | Los Mogotes (Wilcox Cons.) | Zapata | 1 | 11.7K | 2.39M | Feb 2003 – Aug 2026 |
| Lopez Mineral Trust G.U. G-4-168453 | Devon Louisiana Corporation only | El Mesquitito (L 2-7) | Zapata | 1 | 8.9K | 797K | Mar 1998 – Jan 1999 |
| Bowers Trust G-4-251146 | Mortimer Production Company only | T Patch (Reklaw Oso) | Zapata | 1 | 7.26K | 685K | Jul 2009 – Aug 2026 |
| Bowers Trust G-4-252976 | Mortimer Production Company only | T Patch (Reklaw Oso) | Zapata | 1 | 7.04K | 1.07M | Oct 2009 – Aug 2026 |
| Benavides Mineral Trust G-4-147856 | EOG Resources, Inc. only | Lopeno, NE. (7350) | Zapata | 1 | 4.66K | 898K | Dec 1993 – Jan 1999 |
| Bruni Min. Trust O-4-8052 | Killam Oil Co., Ltd. only | Blas Uribe (Rosenberg) | Zapata | 6 | 4.49K | 20 | by Jan 1993 – Jan 2000 |
| Cuellar Trust "a" GU G-4-161602 | EOG Resources, Inc. only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 2.13K | 1.72M | Dec 1996 – Aug 2000 |
| Alexander, M. Trust G-4-163971 | Hilcorp Energy Company only | Exsun (Lobo Cons.) | Zapata | 1 | 1.64K | 3.69M | Mar 1997 – Aug 2026 |
| Uribe Family Trust G-4-183702 | EOG Resources, Inc. only | Pok - a - Dot (8600) | Zapata | 1 | 1.38K | 311K | Jun 2001 – Apr 2011 |
| Bruni Mineral Trust 15 G-4-208866 | Killam Oil Co., Ltd. only | Zwebb (10350) | Zapata | 1 | 1.18K | 720K | Nov 2004 – Jan 2016 |
| Benavides Trust G-4-201375 | Merit Energy Company only | Los Mogotes (Wilcox Cons.) | Zapata | 1 | 1.06K | 327K | Feb 2004 – Aug 2026 |
| Haynes, Leonard G-4-164984 | Hunt, Wm. Herbert, Trust Est. only | Charco (9900) | Zapata | 1 | 955 | 106K | Oct 1997 – Jun 1998 |
| Ramirez Mineral Trust A G-4-184435 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 916 | 671K | May 2001 – Aug 2026 |
| Garza, Amando Trust G-4-225662 | Hilcorp Energy Company only | Charco (9900) | Zapata | 1 | 916 | 5.03M | Jan 2007 – Aug 2026 |
| Gonzales Benavides Trust G-4-213678 | Chesapeake Operating, L.L.C. only | Lopeno, NE (Wilcox Lower) | Zapata | 1 | 829 | 1.43M | Sep 2005 – Aug 2013 |
| Haynes Mineral Trust G-4-135790 | Hilcorp Energy Company only | Munoz (Lobo) | Zapata | 1 | 727 | 2.39M | Sep 1993 – Dec 2012 |
| Amando Garza Trust G-4-223900 | Hilcorp Energy Company only | Charco (9200) | Zapata | 1 | 690 | 4.08M | Dec 2006 – Aug 2026 |
| Benavides Trust G-4-196957 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 655 | 4.42M | Sep 2003 – Apr 2025 |
| Haynes Mineral Trust G-4-139158 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 638 | 1.54M | by Jan 1993 – Aug 2011 |
| Benavides Trust G-4-197724 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 568 | 872K | Oct 2003 – Aug 2026 |
| Uribe Family Trust G-4-186378 | Varas Energy Operating Company, only | Pok - a - Dot (8600) | Zapata | 1 | 492 | 173K | Nov 2001 – Aug 2026 |
| Lopez Mineral Trust G-4-247490 | Hilcorp Energy Company only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 479 | 1.26M | Feb 2009 – Aug 2026 |
| Lopez Mineral Trust G.U. G-4-172312 | Devon Louisiana Corporation only | El Mesquitito (L-1) | Zapata | 1 | 461 | 355K | Feb 1999 – Nov 2003 |
| Benavides Mineral Trust G-4-141286 | Enron Oil & Gas Company only | Lopeno, NE (Wilcox Lower) | Zapata | 1 | 389 | 731K | by Jan 1993 – Feb 1996 |
| Amando Garza Trust G-4-230801 | Hilcorp Energy Company only | Charco (9900) | Zapata | 1 | 378 | 3.56M | Aug 2007 – Aug 2026 |
| Haynes Mineral Trust G-4-209816 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 378 | 2.59M | Apr 2005 – Aug 2026 |
| Benavides Mineral Trust G-4-221640 | GGP Exploration, Ltd. only | Lopeno, NE (A-3) | Zapata | 1 | 314 | 102K | Nov 2006 – Jul 2009 |
| Haynes Mineral Trust G-4-194789 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 270 | 3.76M | Mar 2003 – Aug 2026 |
| Benavides Mineral Trust G-4-150079 | EOG Resources, Inc. only | Lopeno, NE (A-3) | Zapata | 1 | 267 | 1.03M | May 1994 – Apr 1999 |
| Haynes Mineral Trust G-4-168835 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 262 | 1.25M | Jun 1998 – Aug 2026 |
| El Peyote Mineral Trust G-4-141922 | TD Natural Resources LLC only | Loma Vieja (Wilcox) | Zapata | 1 | 260 | 23.7M | by Jan 1993 – Aug 2026 |
| Haynes Mineral Trust G-4-193849 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 246 | 3.94M | Jan 2003 – Aug 2026 |
| Benavides Trust G-4-251692 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 242 | 1.32M | Jan 2007 – Aug 2026 |
| Lopez, Lauro Mineral Trust G-4-174542 | Hilcorp Energy Company only | EN Seguido (Wilcox) | Zapata | 1 | 217 | 11.7M | Aug 1999 – May 2010 |
| Benavides Mineral Trust G-4-147855 | EOG Resources, Inc. only | Lopeno, NE. (9400) | Zapata | 1 | 211 | 1.75M | Dec 1993 – Jun 1996 |
| Bruni Mineral Trust 15 G-4-210538 | Killam Oil Co., Ltd. only | Zwebb (10350) | Zapata | 1 | 180 | 418K | Feb 2005 – Jan 2016 |
| Haynes Mineral Trust G-4-119537 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 170 | 4.96M | by Jan 1993 – Aug 2026 |
| Benavides Trust G-4-193287 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 169 | 1.16M | Feb 2003 – Aug 2026 |
| Haynes Mineral Trust G-4-124383 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 169 | 4.21M | by Jan 1993 – Aug 2026 |
| Cuellar Trust G-4-172933 | XTO Energy Inc. only | Las Lomas (Wilcox 7800) | Zapata | 1 | 146 | 1.56M | Apr 1999 – Jan 2008 |
| El Peyote Mineral Trust G-4-136752 | Energy Development Corp. only | Loma Vieja (Wilcox) | Zapata | 1 | 144 | 2.13M | by Jan 1993 – May 1995 |
| Haynes Mineral Trust G-4-129190 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 138 | 2.21M | by Jan 1993 – Jun 2015 |
| Cuellar Trust GU G-4-122180 | Bordertown Energy Resources, LLC only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 136 | 928K | by Jan 1993 – Mar 2025 |
| Benavides Trust G-4-226978 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 136 | 568K | Apr 2007 – Aug 2026 |
| Cuellar Trust GU G-4-162837 | Varas Energy Operating Company, only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 125 | 873K | Apr 1997 – Apr 2022 |
| Haynes Mineral Trust G-4-193244 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 116 | 4.66M | Dec 2002 – Aug 2026 |
| Benavides Trust G-4-196348 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 105 | 1.85M | Aug 2003 – Feb 2016 |
| Benavides Trust G-4-223383 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 75 | 1.38M | Nov 2006 – Feb 2016 |
| Benavides Mineral Trust G-4-147257 | Enron Oil & Gas Company only | Lopeno, NE. (Wilcox 7500) | Zapata | 1 | 62 | 51.4K | Oct 1993 – Jun 1994 |