| Steed, Netum H. -A- O-13-17874 | Grayson Petroleum Company only | Callisburg, SW. (Strawn 3300) | Cooke | 2 | 129K | 21 | Jan 1993 – Apr 2026 |
| Beaurline, A. W. G-4-167447 | Merit Energy Company only | McAllen Ranch (Vicksburg S, E.) | Hidalgo | 1 | 128K | 2.58M | Feb 1998 – Apr 2026 |
| Guerra, A. E. G-4-145114 | Chevron U. S. A. Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 128K | 10.4M | Apr 1993 – Apr 2003 |
| Hardin Unit O-1-15828 | Callon (Eagle Ford) LLC only | Eagleville (Eagle Ford-1) | Frio | 4 | 128K | 381K | Jan 2012 – Dec 2021 |
| McAllen, A.A. G-4-158903 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 128K | 5.01M | Apr 1996 – Apr 2026 |
| Jones, Callie O-7-6123 | Basa Resources, Inc. only | East Texas | Gregg | 13 | 126K | 80.4K | Jan 1993 – Sep 2024 |
| McAllen, A. A. G-4-174033 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 126K | 2.27M | Jul 1999 – Apr 2026 |
| McAllen, A. A. G-4-187547 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 125K | 5.21M | Nov 2001 – Jun 2023 |
| McAllen, A. A. G-4-202274 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 124K | 7.07M | May 2004 – Apr 2026 |
| UL Pahaska B 21-6 O-10-38374 | Callon Permian II, LLC only | Two Georges (Bone Spring) | Winkler | 1 | 124K | 105K | Jul 2007 – May 2022 |
| Guerra, A.E. G-4-123470 | Texaco E & P Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 124K | 8.82M | Jan 1993 – Apr 2001 |
| McAllen, A.A. -B- G-4-134915 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 122K | 8.56M | Jan 1993 – Apr 2026 |
| McAllen, A. A. G-4-195735 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 122K | 2.71M | Jun 2003 – Apr 2026 |
| McAllen, A. A. G-4-163649 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 119K | 6.3M | May 1997 – Apr 2026 |
| Woods Christian G-4-184010 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 119K | 5.07M | Aug 2001 – Apr 2026 |
| E. L. Martinez G. U. No. 1 G-4-154530 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 119K | 4.49M | Apr 1995 – Nov 2025 |
| Callaway O-3-26265 | Holley Oil Company, LLC only | Giddings (Buda) | Robertson | 1 | 117K | 26K | Oct 2012 – Apr 2026 |
| Guerra, A. E. G-4-172289 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 116K | 11M | Feb 1999 – Apr 2005 |
| Holland, W.H. et Al G-4-132642 | Merit Energy Company only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 113K | 9.76M | Jan 1993 – May 2017 |
| Jackson "D" O-8-17537 | Herd Producing Company, Inc. only | Callahan County Regular | Callahan | 28 | 113K | 22 | Jan 1993 – Jun 2022 |
| Mc Allen, A.A. G-4-148027 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg S, S.) | Hidalgo | 1 | 109K | 5.98M | Jan 1994 – Apr 1997 |
| Guerra, A. E. G-4-223499 | Chevron U. S. A. Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 108K | 15.8M | May 2006 – May 2011 |
| McCall, Jack O. et Al O-10-23274 | TS Oil, LLC only | Waha, W. (Consolidated Delaware) | Reeves | 3 | 108K | 319K | Jan 1993 – Apr 2026 |
| Red Unit 136-137E O-10-49640 | Callon Petroleum Operating Co only | Wolfbone (Trend Area) | Reeves | 1 | 108K | 203K | Mar 2018 – Jul 2021 |
| Guerra, A. E. G-4-182357 | Hilcorp Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 107K | 4.84M | Mar 2001 – Dec 2017 |
| McAllen, A. A. G-4-152886 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 107K | 6.56M | Jan 1995 – May 2013 |
| McAllen, A. A. G-4-259292 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 106K | 4.24M | Oct 2010 – Apr 2026 |
| Sluice Box 4-2 O-10-41762 | Callon Petroleum Operating Co only | Phantom (Wolfcamp) | Reeves | 1 | 105K | 762K | Apr 2011 – Sep 2023 |
| McAllen, A. A. "B" G-4-142518 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 105K | 7.93M | Jan 1993 – Apr 2026 |
| McAllen, A. A. G-4-251658 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 105K | 3.16M | May 2009 – Apr 2026 |
| Madison-Callaway 27C O-10-62206 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 103K | 146K | Mar 2025 – Apr 2026 |
| Hooks Ranch Unit O-8-8231 | Grayrock Energy II, LLC only | Callahan County Regular | Callahan | 13 | 101K | 42 | Jan 1993 – Apr 2026 |
| McAllen, A. A. G-4-249357 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 101K | 2.56M | Mar 2009 – Sep 2012 |
| Green-Williams (Moran) Unit O-8-25802 | GGP Exploration, Ltd. only | Callahan County Regular | Callahan | 12 | 100K | 2.7K | Jan 1993 – May 2019 |
| Guerra, A. E. G-4-234025 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 100K | 8.1M | Dec 2007 – Jul 2010 |
| Wright-Avant "a" Unit O-1-13187 | Callon (Eagle Ford) LLC only | Pearsall (Austin Chalk) | La Salle | 1 | 99.7K | 380K | Jan 1993 – Jul 2016 |
| Guerra, A. E. G-4-229336 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 98.7K | 8.7M | Jul 2007 – Apr 2010 |
| J. F. Pattee et al Unit O-10-39643 | Callon Petroleum Operating Co only | Scott (Cherry Canyon) | Ward | 2 | 98.2K | 91.7K | Oct 2009 – Jan 2020 |
| McAllen, A. A. "B" G-4-249539 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 98K | 1.49M | Apr 2009 – Apr 2026 |
| Piercy, Callie "A" O-11-63310 | Momentum Operating Co., Inc. only | Levelland | Cochran | 7 | 97.9K | 35 | Jan 1993 – Apr 2026 |
| McAllen, A. A. G-4-176392 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 97.6K | 2.55M | Oct 1999 – Aug 2018 |
| McAllen, A. A. G-4-155032 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 97.5K | 5.27M | Jul 1995 – Apr 2026 |
| Eaglehead 'A-A3' O-9-19976 | Callon Petroleum Operating Co only | Lin (Wolfcamp) | Reagan | 1 | 97.4K | 175K | Jan 2018 – Sep 2018 |
| McAllen, A. A. G-4-213502 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 96.5K | 6.28M | Sep 2005 – Jan 2022 |
| Wilson Trust "145" O-10-38569 | Callon Petroleum Operating Co only | War-Wink, W. (Wolfcamp) | Ward | 2 | 96.3K | 91.5K | Aug 2007 – Jul 2020 |
| McAllen, A.A. "B" G-4-86533 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 96.2K | 1.84M | Jan 1993 – Apr 2026 |
| McAllen, A. A. "B" G-4-215819 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 96K | 2.48M | Jan 2006 – Apr 2023 |
| McAllen, A. A. G-4-172990 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 96K | 6.49M | Apr 1999 – Apr 2026 |
| Wright, H.R. O-1-12136 | Callon (Eagle Ford) LLC only | Pearsall (Austin Chalk) | La Salle | 3 | 95.2K | 195K | Jan 1993 – Jan 2019 |
| McAllen, A. A. G-4-179940 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 95K | 4.2M | Oct 2000 – May 2017 |