| McAllen, A. A. -B- G-4-70951 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 71K | 3.27M | Jan 1993 – Apr 2026 |
| Woods Christian G-4-267192 | Merit Energy Company only | McAllen Ranch (Vicksburg K Cons) | Hidalgo | 1 | 70.9K | 4.56M | Mar 2012 – Apr 2026 |
| McAllen, A. A. G-4-209710 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 70.6K | 6.33M | May 2005 – Apr 2026 |
| Guerra, A. E. G-4-188048 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 70.1K | 3.47M | Feb 2002 – Apr 2026 |
| Guerra, A. E. G-4-162699 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 70K | 3.88M | Mar 1997 – Apr 2026 |
| McAllen, A. A. G-4-192401 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 69.5K | 3.91M | Dec 2002 – May 2017 |
| McAllen, A. A. G-4-170897 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 69.4K | 5.68M | Sep 1998 – Apr 2026 |
| Brooks, Sophie O-13-30385 | BLS Production Co., Inc. only | Callisburg, E. (Winger) | Cooke | 2 | 69.2K | 0 | Nov 2004 – Apr 2026 |
| McAllen, A. A. "B" G-4-207562 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 68.8K | 1.26M | Dec 2004 – Apr 2026 |
| Hooks Ranch Unit -A- O-8-13248 | Grayrock Energy II, LLC only | Callahan County Regular | Callahan | 8 | 68.6K | 42 | Jan 1993 – Jul 2024 |
| Guerra, A. E. G-4-166651 | Chevron U. S. A. Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 68.3K | 4.27M | Jan 1998 – May 1999 |
| Woods Christian G-4-157406 | Merit Energy Company only | McAllen Ranch (Vicksburg K Cons) | Hidalgo | 1 | 67.6K | 3.03M | Feb 1996 – Mar 2006 |
| McAllen, A. A. G-4-138086 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 67.5K | 4.38M | Jan 1993 – Apr 2026 |
| Pharr Fieldwide Unit G-4-161059 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 67.3K | 10.6M | Jun 1996 – Jan 2002 |
| Weaver 24 O-10-40865 | Callon Petroleum Operating Co only | Spraberry (Trend Area) | Howard | 2 | 66.7K | 369K | Jan 2011 – Dec 2017 |
| Davis, J. T. Estate O-8-11786 | Wylie Bros. Prod. & Drgl. Co,inc only | Callahan County Regular | Callahan | 16 | 66K | 21 | Jan 1993 – Apr 2026 |
| Woods Christian G-4-257979 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 65.9K | 3.68M | Jul 2010 – Apr 2026 |
| McAllen, A. A. "Slot" G-4-191623 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 65.6K | 3.14M | May 2002 – Mar 2015 |
| McAllen, A. A. G-4-60173 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 65.6K | 1.51M | Jan 1993 – Apr 2026 |
| McAllen, A.A. G-4-84523 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 65.2K | 3.51M | Jan 1993 – Sep 1998 |
| Eubank, R. O. O-8-372 | 500X Operating LLC only | Callahan County Regular | Callahan | 25 | 64.4K | 70 | Jan 1993 – Apr 2026 |
| Piercy, Callie et Al O-11-63536 | Momentum Operating Co., Inc. only | Levelland | Cochran | 3 | 63.9K | 35 | Jan 1993 – Apr 2026 |
| Guerra, A. E. G-4-118870 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 63.7K | 4.33M | Jan 1993 – Jun 1999 |
| Guerra, A. E. G-4-175086 | Chevron U. S. A. Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 63.6K | 3.03M | Nov 1999 – Oct 2004 |
| McAllen, A. A. G-4-37083 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 63K | 3.2M | Jan 1993 – Aug 2003 |
| McAllen, A. A. "B" G-4-145312 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 62.4K | 6.55M | Apr 1993 – Apr 2026 |
| George 76 O-8-26444 | Charter Petroleum Company only | Callahan County Regular | Callahan | 1 | 62.1K | 24.3K | Jan 1993 – Feb 2025 |
| Guerra, A. E. G-4-213671 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 61.9K | 2.53M | Aug 2005 – Nov 2009 |
| Pharr Fieldwide Unit G-4-189831 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 61.1K | 11.6M | Apr 2002 – Apr 2026 |
| McAllen, A. A. G-4-231801 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 61.1K | 4.17M | Aug 2007 – Apr 2026 |
| McAllen, A. A. G-4-201026 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 61K | 2.94M | Jun 2003 – Apr 2026 |
| Hampton-Calley O-3-22187 | Chesapeake Operating, Inc. only | Giddings (Austin Chalk-3) | Fayette | 1 | 59.8K | 401K | Jul 1993 – Jun 2004 |
| McAllen, A. A. G-4-185385 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 59.6K | 2.61M | Mar 2000 – Jul 2020 |
| McAllen, A. A. G-4-256535 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 59.6K | 3.05M | Jan 2010 – May 2025 |
| McAllen, A. A. "B" G-4-233037 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 59.6K | 4.77M | Oct 2007 – Apr 2026 |
| Christian, Woods G-4-139433 | Shell Western E&P only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 58.8K | 4.91M | Jan 1993 – Oct 2008 |
| Amanda A O-10-43034 | Callon Petroleum Operating Co only | Spraberry (Trend Area) | Midland | 4 | 58.5K | 90.4K | Sep 2011 – Apr 2016 |
| McAllen Fieldwide Unit G-4-162849 | Totalfinaelf E&P USA Inc only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 58.4K | 3.93M | Apr 1997 – Dec 2002 |
| McAllen, A. A. "B" G-4-259281 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 58.2K | 1.99M | Dec 2010 – Apr 2026 |
| Callison Gas Unit 1 G-3-206138 | Faulconer Energy, LLC only | Raywood (Cook Mtn. 11200) | Liberty | 1 | 57.7K | 2.47M | Dec 2004 – Jul 2024 |
| Callaway, Gib O-8-11032 | IS Energy, LLC only | Bissett Ranch (Strawn Reef) | Stonewall | 1 | 57K | 620 | Jan 1993 – Apr 2026 |
| Harris-Barton O-8-8891 | Ruby Operating Company, Inc only | Callahan County Regular | Callahan | 19 | 56.8K | 22 | Jan 1993 – May 2019 |
| McAllen, A. A. "B" G-4-223901 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 56.7K | 2.82M | Nov 2006 – Apr 2026 |
| Guerra, A.E. G-4-131681 | Chevron U. S. A. Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 56.6K | 5.45M | Jan 1993 – Sep 2004 |
| Guerra, A. E. G-4-180588 | Chevron U. S. A. Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 56.2K | 6.68M | Dec 2000 – Apr 2006 |
| Guerra, A. E. G-4-179390 | Chevron U. S. A. Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 56.1K | 1.78M | Oct 2000 – Sep 2004 |
| Guerra, E.E. Jr G-4-122046 | Dewbre Petroleum Corporation only | McAllen Ranch (Guerra) | Hidalgo | 1 | 55.8K | 6.16M | Jan 1993 – Mar 2015 |
| McAllen, A. A. "B" G-4-270343 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 55.5K | 2.16M | Jun 2013 – Apr 2026 |
| Guerra, A. E. G-4-165899 | Chevron U. S. A. Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 54.5K | 2.89M | Nov 1997 – Nov 1998 |
| McAllen, A. A. G-4-263155 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 53.9K | 1.98M | Aug 2011 – Apr 2026 |