| McCall -B- O-13-16924 | Wise Production Company only | Montague County Regular | Montague | 1 | 13K | 898 | by Jan 1993 – Mar 2014 |
| South Callaghan Ranch G-4-247408 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 12.9K | 1.51M | Jan 2009 – Aug 2026 |
| Pharr Fieldwide Unit G-4-251757 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.9K | 6.11M | Jun 2009 – Aug 2026 |
| Callow 2 Unit G-6-164912 | CR2 Energy LLC only | Carthage (Cotton Valley) | Panola | 1 | 12.9K | 1.53M | Aug 1997 – Dec 2018 |
| McAllen Fieldwide Unit G-4-142899 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.8K | 3.3M | by Jan 1993 – Nov 2002 |
| McAllen, A. A. G-4-121628 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 12.8K | 526K | by Jan 1993 – May 2020 |
| McCall "C" O-13-25865 | Ventex Operating Corp. only | Sanders (Conglomerate, Lo.) | Montague | 1 | 12.8K | 836 | Feb 1993 – Feb 2003 |
| Callow 2 Unit G-6-84328 | Tanos Exploration II, LLC only | Carthage (Cotton Valley) | Panola | 1 | 12.7K | 1.16M | by Jan 1993 – Feb 2009 |
| Claunch, B. C. O-1-175 | Eldon Oil Co. only | Calliham | McMullen | 4 | 12.7K | 37 | by Jan 1993 – Jul 2026 |
| Callow 2 Unit G-6-221646 | CR2 Energy LLC only | Carthage (Cotton Valley) | Panola | 1 | 12.7K | 940K | Apr 2006 – May 2016 |
| McAllen Fieldwide Unit G-4-197323 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.6K | 3.3M | May 2003 – May 2024 |
| Guerra, A. E. G-4-233699 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 12.6K | 1.03M | Oct 2007 – Jun 2016 |
| South Callaghan Ranch G-4-222998 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 12.6K | 3M | Aug 2006 – Aug 2026 |
| McAllen, A. A. G-4-116169 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 12.6K | 307K | by Jan 1993 – Dec 2022 |
| Ezzell O-1-2521 | Eldon Oil Co. only | Calliham | McMullen | 6 | 12.6K | 24 | by Jan 1993 – Dec 2004 |
| Swoli G-4-208858 | Dewbre Petroleum Corporation only | McAllen Ranch (Guerra, E.) | Hidalgo | 1 | 12.5K | 829K | Feb 2005 – Aug 2022 |
| McAllen, A. A. G-4-118089 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 12.5K | 1.2M | by Jan 1993 – Aug 2023 |
| Jobe O-8-20975 | Gideon Operating only | Callahan County Regular | Callahan | 13 | 12.4K | 37 | by Jan 1993 – Jul 2002 |
| McAllen, A.A. 'B' G-4-287195 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 12.4K | 1.71M | Jun 2019 – Aug 2026 |
| Woods Christian G-4-268054 | Merit Energy Company only | McAllen Ranch (Vicksburg K Cons) | Hidalgo | 1 | 12.3K | 703K | Jul 2012 – Aug 2026 |
| Snyder, C.B. O-8-16197 | GNG Operating LLC only | Callahan County Regular | Callahan | 9 | 12.3K | 20 | by Jan 1993 – Nov 2024 |
| McAllen Fieldwide Unit G-4-150565 | Fina Oil & Chemical Company only | McAllen (9400) | Hidalgo | 1 | 12.2K | 345K | Feb 1994 – Apr 1998 |
| McAllen Fieldwide Unit G-4-259321 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.2K | 250K | Jun 2010 – Oct 2021 |
| McAllen, A. A. G-4-62318 | Forest Oil Corporation only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 12.2K | 492K | by Jan 1993 – Sep 1998 |
| Callie 5 O-9-23737 | Summit Petroleum LLC only | Spraberry (Trend Area) | Upton | 1 | 12.1K | 13.4K | Jun 2026 – Aug 2026 |
| Callaway, Gerald L. O-8-22814 | Lawrence Energy Company only | Brown County Regular | Brown | 10 | 12.1K | 149 | by Jan 1993 – Jul 2026 |
| Holland, W. H. Gas Unit G-4-249588 | Merit Energy Company only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 12K | 784K | Mar 2009 – Aug 2026 |
| Beaurline, A. W. G-4-148695 | Mueller Exploration, Inc. only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 12K | 1.15M | Jan 1994 – Nov 2024 |
| Evans, J. W. -B- O-8-11225 | Texas Sands Resources, LLC only | Callahan County Regular | Callahan | 6 | 11.9K | 47 | by Jan 1993 – Jun 2014 |
| Pharr Fieldwide Unit G-4-157515 | Totalfinaelf E&P USA Inc only | McAllen (Hansen) | Hidalgo | 1 | 11.8K | 1.21M | Jul 1995 – Dec 2001 |
| McAllen, A. A. G-4-93760 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 11.7K | 322K | by Jan 1993 – May 2019 |
| South Callaghan Ranch G-4-236930 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 11.6K | 1.29M | Mar 2008 – Aug 2026 |
| McAllen, A. A. G-4-270166 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 11.6K | 646K | Apr 2013 – Aug 2026 |
| Beaurline, A. W. G-4-157387 | Mueller Exploration, Inc. only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 11.5K | 795K | Dec 1995 – Nov 2024 |
| McAllen Fieldwide Unit G-4-11950 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.5K | 1.95M | by Jan 1993 – Dec 2006 |
| McAllen, A. A. G-4-264380 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 11.5K | 579K | Dec 2011 – Aug 2026 |
| McAllen, A. A. G-4-100473 | Merit Energy Company only | McAllen Ranch (Vicksburg Y) | Hidalgo | 1 | 11.5K | 667K | Dec 2000 – Apr 2002 |
| McAllen, A. A. G-4-138889 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 11.4K | 1.03M | by Jan 1993 – Aug 2026 |
| McCall O-8-18722 | B & B Oil, Inc. only | Hawk Eye (Adams Branch) | Eastland | 17 | 11.4K | 21 | by Jan 1993 – Aug 2009 |
| McAllen, A. A. G-4-268685 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 11.3K | 429K | Jul 2012 – Aug 2026 |
| McAllen Fieldwide Unit G-4-200117 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.2K | 1.18M | Nov 2003 – Aug 2026 |
| Callihan, W. M. O-1-995 | Meb, LLC only | Luling-Branyon | Caldwell | 11 | 11.2K | 27.6K | by Jan 1993 – Mar 2015 |
| Bales Gas Unit G-4-176243 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.2K | 366K | Jan 2000 – Nov 2002 |
| Wylie,fred Jr. O-8-460 | Haskit, Kendall only | Callahan County Regular | Callahan | 17 | 11.1K | 23 | by Jan 1993 – Aug 2026 |
| Callon-Hanson G-3-174535 | Callon Petroleum Operating Co only | Kemah (Anomalina) | Galveston | 1 | 11.1K | 559K | Jan 1999 – Apr 2000 |
| Callow 2 Unit G-6-247722 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 11.1K | 1.18M | Jan 2009 – Aug 2026 |
| Pharr Fieldwide Unit G-4-164332 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 10.8K | 1.88M | May 1997 – Oct 2004 |
| Callow 2 Unit G-6-96436 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 10.7K | 1.26M | by Jan 1993 – Aug 2026 |
| Beaurline, A. W. G-4-161228 | Cabot Oil & Gas Corporation only | McAllen Ranch (Vksbg. S-T-U, N.) | Hidalgo | 1 | 10.6K | 3.01M | Nov 1996 – Oct 1998 |
| Baker, Buck O-11-62742 | Callon Petroleum Operating Co only | Ackerly (Dean Sand) | Martin | 1 | 10.6K | 791 | by Jan 1993 – Oct 2016 |