| Guerra, A. E. G-4-235115 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 27.6K | 3.12M | Jan 2008 – Oct 2009 |
| McAllen Fieldwide Unit G-4-259318 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 27.6K | 2.87M | Oct 2010 – Aug 2026 |
| McCall O-11-61101 | Delta C02, LLC only | Wasson | Yoakum | 1 | 27.4K | 164 | by Jan 1993 – Jan 2016 |
| Guerra, E. E. G-4-189388 | Dewbre Petroleum Corporation only | McAllen Ranch (Guerra) | Hidalgo | 1 | 27.1K | 2.1M | May 2002 – Apr 2023 |
| Hill "A" G-4-127230 | Wynn-Crosby Energy, Inc. only | McAllen Ranch (Guerra, E.) | Hidalgo | 1 | 27K | 1.55M | by Jan 1993 – Feb 2004 |
| Guerra, A. E. G-4-289812 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 26.9K | 1.51M | Aug 2016 – Feb 2017 |
| McAllen, A. A. G-4-261789 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 26.9K | 1.85M | May 2011 – Aug 2026 |
| McAllen, A. A. G-4-123471 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 26.8K | 3.97M | by Jan 1993 – Aug 2026 |
| Guerra, A.E. G-4-135194 | Texaco E & P Inc. only | McAllen Ranch (Vicksburg Y) | Hidalgo | 1 | 26.7K | 810K | by Jan 1993 – Dec 1994 |
| McAllen Fieldwide Unit G-4-170019 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26.7K | 794K | Jan 1998 – Dec 2007 |
| McAllen, A.A. G-4-158636 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 26.6K | 1.92M | Feb 1996 – Sep 2000 |
| McAllen, A.A. "B" G-4-125254 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 26.6K | 1.29M | by Jan 1993 – Aug 2026 |
| McAllen, A. A. G-4-258179 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 26.5K | 512K | Apr 2010 – Apr 2013 |
| Callihan, Jim G. O-1-3549 | Merkin LLC only | Luling-Branyon | Caldwell | 6 | 26.3K | 25.2K | by Jan 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-171841 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26K | 2.44M | Aug 1998 – Aug 2026 |
| Guerra, A. E. G-4-168933 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 25.9K | 2.98M | May 1998 – Apr 2012 |
| McAllen, A. A. "B" G-4-256469 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 25.9K | 1.47M | Jan 2010 – Aug 2026 |
| Callie 3 O-9-23736 | Summit Petroleum LLC only | Spraberry (Trend Area) | Upton | 1 | 25.9K | 17.6K | Jun 2026 – Aug 2026 |
| Pharr Fieldwide Unit G-4-210399 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 25.8K | 2.96M | Mar 2005 – Aug 2026 |
| Tensleep O-10-56658 | Callon Petroleum Operating Co only | Phantom (Wolfcamp) | Ward | 2 | 25.8K | 32.4K | Jan 2022 – Jan 2022 |
| McAllen Fieldwide Unit G-4-173960 | Totalfinaelf E&P USA Inc only | McAllen (Bond C) | Hidalgo | 1 | 25.8K | 1.8M | Aug 1997 – Dec 2001 |
| South Callaghan Ranch O-4-13565 | L.T.D. Explorations Inc. only | Brettchance (Middle Wilcox) | Webb | 1 | 25.6K | 0 | Apr 2009 – Aug 2026 |
| Pharr Fieldwide Unit G-4-235966 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 25.6K | 2.88M | Nov 2007 – Aug 2026 |
| Woods Christian G-4-165593 | Merit Energy Company only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 25.6K | 910K | Nov 1997 – Aug 2026 |
| Alvey Estate O-8-17206 | Cyber Enviro-Tech Inc only | Callahan County Regular | Callahan | 33 | 25.3K | 21 | by Jan 1993 – Jun 2026 |
| Williams "2976" O-8-16033 | Petex only | Callahan County Regular | Callahan | 6 | 25.2K | 241 | by Jan 1993 – Aug 2026 |
| McAllen, A. A. "B" G-4-184685 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 25.2K | 2.38M | Aug 2001 – Aug 2026 |
| University "2-26" O-9-17672 | Callon Petroleum Operating Co only | Spraberry (Trend Area) | Reagan | 1 | 25.2K | 33.3K | Aug 2011 – Nov 2014 |
| Woods Christian G-4-89860 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 25.1K | 929K | by Jan 1993 – Aug 2026 |
| Woods Christian G-4-220436 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 25.1K | 2.32M | Jun 2006 – Aug 2026 |
| McAllen, A. A. "B" G-4-256517 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 25.1K | 1.83M | Feb 2010 – Aug 2026 |
| Guerra, A. E. G-4-115034 | Texaco E & P Inc. only | McAllen Ranch(vicksburg-U-V-,se) | Hidalgo | 1 | 25K | 2.02M | by Jan 1993 – May 2000 |
| Pharr Fieldwide Unit G-4-179712 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 24.9K | 2.15M | May 2000 – Aug 2026 |
| Guerra, A. E. G-4-172579 | Texaco E & P Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 24.9K | 1.41M | Apr 1999 – Oct 2000 |
| Brewer, Floyd O-8-333 | Bridwell Oil Co. only | Callahan County Regular | Callahan | 2 | 24.9K | 31.9K | by Jan 1993 – Aug 2026 |
| Beaurline G-4-233197 | Dewbre Petroleum Corporation only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 24.6K | 643K | Nov 2007 – Jan 2015 |
| McAllen, A. A. G-4-257572 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 24.4K | 1.32M | Apr 2010 – Aug 2026 |
| Amanda O-10-38814 | Callon Petroleum Operating Co only | Sallie Ann (Spraberry-Wolfcamp) | Midland | 1 | 24.1K | 28.6K | Mar 2008 – Aug 2011 |
| Kennard, Mabel O-8-9642 | C & C Petroleum Management, LLC only | Callahan County Regular | Callahan | 10 | 24K | 86 | by Jan 1993 – May 2013 |
| Antilley, Joe I. O-8-9368 | Shahan, Donald Allan only | Callahan County Regular | Callahan | 1 | 23.9K | 21 | by Jan 1993 – Aug 2026 |
| Norvell, Chester O-8-13964 | Wylie Bros. Prod. & Drgl. Co,inc only | Callahan County Regular | Callahan | 16 | 23.9K | 21 | by Jan 1993 – Aug 2026 |
| Hubbard O-8-20930 | Momentum Operating Co., Inc. only | Callahan County Regular | Callahan | 2 | 23.8K | 6.23K | by Jan 1993 – Jan 2014 |
| Williams 2046 O-8-30515 | Ampak Oil Company only | Callahan County Regular | Callahan | 3 | 23.7K | 55K | Feb 2010 – Jul 2026 |
| McAllen, A. A. "B" G-4-214741 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 23.7K | 973K | Nov 2005 – Aug 2026 |
| McAllen, A. A. G-4-262612 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 23.6K | 344K | Apr 2011 – Feb 2014 |
| Guerra, A. E. G-4-175354 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 23.6K | 510K | Nov 1999 – Aug 2026 |
| McAllen, A. A. G-4-275522 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 23.6K | 930K | Sep 2014 – Aug 2026 |
| McAllen, A. A. G-4-191110 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg Y) | Hidalgo | 1 | 23.6K | 780K | Jul 2002 – Aug 2026 |
| McCall GC O-8-31471 | Gunn Oil Company only | Rotan | Fisher | 1 | 23.5K | 0 | Mar 2014 – Jul 2026 |
| Woods Christian G-4-259282 | OXY USA Inc. only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 23.5K | 1.24M | Nov 2010 – Feb 2014 |