| A. Martinez Unit G-4-148338 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 52.5K | 6.49M | Feb 1994 – Aug 2026 |
| C-Bruni Mineral Trust G-4-146852 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 38.9K | 5.08M | Oct 1993 – Aug 2026 |
| Briones, J.E. "A" G-4-147343 | Columbus Energy, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 35.6K | 12.3M | Nov 1993 – Aug 2026 |
| Martinez, Antonio et Al G-4-150087 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 35.3K | 3.61M | Jun 1994 – Aug 2026 |
| C-Bruni Mineral Trust G-4-147608 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 34.6K | 4.28M | Dec 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-147241 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 33K | 2.38M | Nov 1993 – Aug 2026 |
| Martinez, E.C. G-4-148708 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 29.6K | 3.94M | Mar 1994 – Aug 2026 |
| Martinez, Antonio et Al G-4-131590 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 24.5K | 9.75M | by Jan 1993 – Aug 2026 |
| C-Bruni Mineral Trust G-4-147615 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 22.1K | 7.67M | Nov 1993 – Aug 2026 |
| M.L.E.I.-Pena, H. L. G-4-109224 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 19.8K | 2.27M | by Jan 1993 – Jun 2021 |
| Martinez, E.C. G-4-208266 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 17.8K | 3.04M | Dec 2004 – Aug 2026 |
| Mercurio Martinez et al Unit A G-4-144238 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 16.8K | 3.53M | by Jan 1993 – Aug 2026 |
| M.L.E.I. Pena, H.L. G-4-126259 | Chevron U. S. A. Inc. only | La Perla (Lobo Cons.) | Webb | 1 | 13.8K | 1.26M | by Jan 1993 – May 2005 |
| Herbst, M.V. G-4-147344 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 13.2K | 2.54M | Nov 1993 – Feb 2019 |
| Martinez, Antonio et Al G-4-134181 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 11.1K | 5M | by Jan 1993 – Aug 2026 |
| Martinez, Antonio et Al G-4-144343 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 10.2K | 3.27M | by Jan 1993 – Aug 2026 |
| La Perla G-4-148280 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 9.81K | 12.6M | Feb 1994 – Aug 2026 |
| Martinez, Antonio et Al G-4-153159 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 9.25K | 890K | Jan 1995 – Aug 2026 |
| Hubberd Estate F G-4-135920 | Varas Energy Operating Company, only | La Perla (Lobo Cons.) | Webb | 1 | 8.56K | 1.16M | by Jan 1993 – Aug 2026 |
| Bruni Ranch G-4-174892 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 8.56K | 2.75M | Nov 1999 – Oct 2024 |
| Mercurio Martinez et al Unit G-4-148974 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 8.15K | 2.39M | Feb 1994 – Aug 2026 |
| Hubberd Estate A G-4-141057 | Varas Energy Operating Company, only | La Perla (Lobo Cons.) | Webb | 1 | 7.74K | 1.43M | by Jan 1993 – Aug 2026 |
| Vidaurri, R. et Al G-4-144716 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 7.18K | 6.65M | Mar 1993 – Aug 2026 |
| Herbst, M.V. G-4-144565 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 6.91K | 1.37M | Mar 1993 – Feb 2019 |
| Vidaurri, R. et Al G-4-146503 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 6.38K | 2.44M | Aug 1993 – Aug 2026 |
| La Perla G-4-290080 | Hilcorp Energy Company only | La Perla Ranch (Wilcox 7450) | Zapata | 1 | 5.25K | 71.3K | Mar 2019 – Aug 2026 |
| Herbst, M.V. G-4-125325 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 5.2K | 2.69M | by Jan 1993 – Feb 2019 |
| Rancho Nuevo G-4-154125 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 5.04K | 5.21M | Oct 1994 – Aug 2026 |
| Vidaurri, R. et Al G-4-144504 | Chevron U. S. A. Inc. only | La Perla (Lobo Cons.) | Zapata | 1 | 4.61K | 1.17M | Feb 1993 – Oct 1998 |
| La Perla G-4-80282 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.51K | 4.67M | by Jan 1993 – Aug 2026 |
| Martinez, E.C. G-4-146870 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.42K | 597K | Oct 1993 – Aug 2026 |
| Martinez, Antonio et Al G-4-176524 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.39K | 2.32M | Mar 2000 – Aug 2026 |
| Martinez, Antonio et Al G-4-142538 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.37K | 1.9M | by Jan 1993 – Aug 2026 |
| Canales G-4-120191 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.32K | 10M | by Jan 1993 – Aug 2026 |
| La Perla G-4-129647 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.22K | 6.78M | by Jan 1993 – Aug 2026 |
| Herbst, M.V. G-4-117034 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.13K | 5.64M | by Jan 1993 – Aug 2026 |
| Vidaurri, R. et Al G-4-167563 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 4.1K | 2.63M | Apr 1998 – Aug 2026 |
| Kathleen Marie G-4-265538 | Teal Energy USA, Inc. only | La Perla (Lobo Cons.) | Webb | 1 | 3.94K | 339K | Jun 2012 – Feb 2025 |
| Martinez, B.M. G-4-146422 | Digital Operating Company LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 3.93K | 1.48M | Aug 1993 – Sep 2025 |
| Puig King Gas Unit G-4-181816 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.93K | 1.72M | Feb 2001 – Oct 2018 |
| Hubberd Estate E G-4-135994 | Varas Energy Operating Company, only | La Perla (Lobo Cons.) | Webb | 1 | 3.82K | 1.15M | by Jan 1993 – Aug 2026 |
| Vidaurri-State Gas Unit No. 2 G-4-168960 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.67K | 23.4M | Mar 1998 – Aug 2026 |
| L & P G-4-162124 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.59K | 2.32M | Feb 1997 – Jun 2019 |
| Martinez, Mercurio G.U. G-4-207004 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.56K | 1.33M | Dec 2004 – Aug 2026 |
| Vidaurri, R. et Al G-4-131943 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.4K | 1.74M | by Jan 1993 – Aug 2026 |
| La Perla G-4-135917 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Zapata | 1 | 3.18K | 11.9M | by Jan 1993 – Aug 2026 |
| Pena, Helen L. G-4-182720 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3.14K | 1.33M | May 2001 – Jun 2021 |
| Martinez, Antonio et Al G-4-289507 | Hilcorp Energy Company only | La Perla (Wilcox 6800) | Zapata | 1 | 3.12K | 161K | Oct 2016 – Aug 2026 |
| Martinez, C. G-4-131351 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3.02K | 617K | by Jan 1993 – Feb 2019 |
| Martinez, B.M. G-4-145854 | Digital Operating Company LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 3K | 1.08M | Jun 1993 – Sep 2025 |