| Hereford, L. M. G-4-191663 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 37.4K | 3.03M | Sep 2002 – Apr 2026 |
| Ramirez-Malakoff Unit G-4-154454 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 30.5K | 3.8M | May 1995 – Apr 2026 |
| Martinez, Mercurio et al Unit G-4-77563 | Hilcorp Energy Company only | Laredo (Lobo) | Zapata | 1 | 24.6K | 7.34M | Jan 1993 – Apr 2026 |
| Cal-Mex G-4-66404 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 20.5K | 7.62M | Jan 1993 – Apr 2026 |
| Moreno, I. et Al G-4-124487 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 19.2K | 3.59M | Jan 1993 – Apr 2026 |
| Ramirez, J.E. G-4-97093 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 18.7K | 4.57M | Feb 1993 – Apr 2026 |
| Hachar, D. D. G-4-66575 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 18K | 4.46M | Jan 1993 – Nov 2024 |
| Macmahon, P. A. G-4-85282 | Chevron U. S. A. Inc. only | Laredo (Lobo) | Webb | 1 | 17.5K | 2.98M | Jan 1993 – Oct 2007 |
| Ramirez, J.E. G-4-154814 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 16.7K | 2.1M | Jul 1995 – Apr 2026 |
| C-Bruni Mineral Trust G-4-65882 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 14.6K | 2.99M | Jan 1993 – Apr 2026 |
| Hachar, D. D. G-4-158391 | Digital Operating Company LLC only | Laredo (Lobo) | Webb | 1 | 14.1K | 2.58M | May 1996 – Oct 2012 |
| Hachar G-4-189724 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 12.7K | 2.6M | Jan 2002 – Aug 2025 |
| Ramirez,j.e. G-4-69290 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 12.2K | 3.63M | Jan 1993 – Aug 2025 |
| C-Bruni Mineral Trust G-4-65462 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 11.8K | 2.26M | Jan 1993 – Apr 2026 |
| McMahan, P. A. G-4-72949 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 11.4K | 2.27M | Jan 1993 – Nov 2022 |
| Bruni Mineral Trust G-4-64000 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 11.3K | 3.94M | Jan 1993 – Apr 2026 |
| Alexander, Charles E. G-4-69688 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 11K | 966K | Jan 1997 – Apr 2026 |
| Macmahon, P.A. G-4-82526 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 9.07K | 2.1M | Jan 1993 – Apr 2026 |
| Haering - Martin G-4-71902 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 8.91K | 1.96M | Jan 1993 – Aug 2024 |
| Ruiz, J.M. G-4-61264 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 8.81K | 2.73M | Jan 1993 – Oct 2019 |
| Hubberd , William "A" G-4-66694 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 8.78K | 2.86M | Jan 1993 – Apr 2026 |
| C-Bruni Mineral Trust G-4-74664 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 8.77K | 1.51M | Jan 1993 – Apr 2026 |
| Zachry, H.B. -D G-4-82019 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 8.23K | 3.11M | Jan 1993 – Apr 2026 |
| Martinez, Mercurio et al Unit A G-4-78491 | Hilcorp Energy Company only | Laredo (Lobo) | Zapata | 1 | 8.2K | 2.85M | Aug 1995 – Apr 2026 |
| Hubberd, William G-4-92268 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 8.11K | 940K | Jan 1993 – Apr 2026 |
| Martinez - Barrera Gas Unit G-4-78953 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 7.82K | 3.56M | Jan 1993 – Apr 2026 |
| Chamberlain-Gongora Unit G-4-118508 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 7.81K | 1.82M | Jan 1993 – Apr 2026 |
| M.L.E.I. Bruni Mineral Trust G-4-108837 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 7.6K | 2.12M | Jan 1993 – Apr 2026 |
| Clark, N. H. G-4-119444 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 7.14K | 2.23M | Jan 1993 – Apr 2026 |
| COG Malakoff-Peterson "A" G-4-120996 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 7.09K | 1.03M | Jan 1993 – Apr 2026 |
| Block, Anna G-4-63918 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 6.97K | 506K | Jan 1993 – Apr 2026 |
| B M T G-4-61814 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 6.96K | 2.96M | Jan 1993 – Apr 2026 |
| Hereford, L. M. G-4-171851 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 6.92K | 2.57M | Dec 1998 – Apr 2026 |
| Bruni Mineral Trust G-4-107084 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 6.72K | 1.58M | Mar 1993 – Apr 2026 |
| Hereford -T- G-4-65828 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 6.69K | 2.73M | Jan 1993 – Jan 2024 |
| Hubberd, William C G-4-63360 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 6.44K | 909K | Jan 1993 – Aug 2015 |
| Hachar, D. D. G-4-139411 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 6.38K | 2.67M | Jan 1993 – Apr 2026 |
| Martinez, Senesio G-4-60112 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 6.27K | 765K | Jan 1993 – Jul 2017 |
| Hereford -T- G-4-60382 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 6.23K | 2.43M | Jan 1993 – Apr 2026 |
| Hereford, L. M. G-4-64864 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 6.21K | 3.05M | Jan 1993 – Apr 2026 |
| Hereford -T- G-4-62054 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 6.18K | 2.33M | Jan 1993 – Mar 2025 |
| Martinez, E. C. G-4-70524 | Hilcorp Energy Company only | Laredo (Lobo) | Zapata | 1 | 6.15K | 966K | Jan 1993 – Jul 2010 |
| C-Bruni Mineral Trust G-4-138312 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 5.97K | 642K | Jan 1993 – Apr 2026 |
| Salinas, Octavio Gas Unit G-4-75829 | Fran Investments, Inc. only | Laredo (Lobo) | Zapata | 1 | 5.79K | 1.58M | Jan 1993 – Oct 2014 |
| Acevedo-Haering G-4-79315 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 5.74K | 1.5M | Jan 1993 – Apr 2026 |
| Martinez, Antonio G-4-249327 | Hilcorp Energy Company only | Laredo (Lobo) | Zapata | 1 | 5.68K | 1.75M | May 2009 – Apr 2026 |
| M.L.E.I. Bruni Min. Tr. G-4-111573 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 5.63K | 1.87M | Jan 1993 – Apr 2026 |
| Rancho Blanco G-4-159455 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 5.55K | 1.54M | Jun 1996 – Jun 2019 |
| Hereford, L. M. G-4-69483 | Merit Energy Company only | Laredo (Lobo) | Webb | 1 | 5.17K | 1.55M | Jan 1993 – Apr 2026 |
| Schwarz G-4-73863 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 5.12K | 2.1M | Jan 1993 – Sep 2017 |