| South Callaghan Ranch G-4-252522 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.32K | 346K | Nov 2009 – Aug 2026 |
| McAllen Fieldwide Unit G-4-173400 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 1.29K | 539K | Dec 1998 – Jul 2002 |
| South Callaghan Ranch G-4-144569 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.29K | 1.93M | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-236460 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.28K | 155K | Mar 2008 – Aug 2008 |
| Baird O-11-69782 | Callon Petroleum Operating Co only | Romac (Strawn) | Borden | 1 | 1.28K | 0 | Aug 2011 – Jul 2012 |
| South Callaghan Ranch G-4-143216 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.27K | 585K | by Jan 1993 – Aug 2026 |
| Bales Gas Unit G-4-167512 | Merit Energy Company only | McAllen (5800) | Hidalgo | 1 | 1.27K | 78.9K | Apr 1997 – Sep 1999 |
| Shirly Newton 2301 Pooled Unit O-11-70068 | Callon Petroleum Operating Co only | Rafter Cross (Mississippian) | Borden | 1 | 1.27K | 0 | Feb 2013 – Jul 2013 |
| Callaway, P. C. O-4-12399 | Kriken Oil & Gas only | London Gin (4704) | Nueces | 1 | 1.27K | 8 | Oct 1994 – Sep 1995 |
| Parsons, Willie O-8-18588 | F & S Production only | Callahan County Regular | Callahan | 1 | 1.27K | 48 | by Jan 1993 – May 1999 |
| South Callaghan Ranch G-4-151328 | Aldine Oil and Gas, LP only | Benavides (Lobo Cons.) | Webb | 1 | 1.26K | 2.59M | Aug 1994 – May 2016 |
| Griggs, R. L. O-8-29264 | Southwest Gas Systems, Inc. only | Callahan County Regular | Callahan | 1 | 1.25K | 11.7K | Jul 2003 – Oct 2017 |
| Callaghan G-4-209803 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 1.23K | 1.66M | Apr 2005 – Nov 2020 |
| Vickie Newton 3801 Pooled Unit O-11-70066 | Callon Petroleum Operating Co only | Parallel-Baird (Strawn) | Borden | 1 | 1.23K | 0 | Dec 2012 – Feb 2013 |
| South Callaghan Ranch G-4-194690 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.22K | 435K | Mar 2003 – Aug 2026 |
| South Callaghan Ranch G-4-198147 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.21K | 1.04M | Sep 2003 – Aug 2026 |
| Neumann O-8-13194 | Haskit, Kendall only | Callahan County Regular | Callahan | 5 | 1.2K | 20 | by Jan 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-255899 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 1.2K | 337K | Mar 2010 – Sep 2010 |
| South Callaghan Ranch G-4-241749 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.19K | 144K | Jul 2008 – Aug 2026 |
| McAllen Fieldwide Unit G-4-197028 | Shell Western E&P only | McAllen (Keirn 6100) | Hidalgo | 1 | 1.18K | 170K | Jan 2003 – Mar 2006 |
| Williams, Louie "A" O-8-23576 | TX (Georgia) Holdings, Inc. only | Callahan County Regular | Callahan | 2 | 1.18K | 78 | by Jan 1993 – Dec 2007 |
| Callison G-6-239115 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 1.17K | 319K | Apr 2008 – Aug 2026 |
| Beaurline, A. W. G-4-173891 | Gn&j LLC only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 1.16K | 57.6K | Jun 1999 – Feb 2023 |
| South Callaghan Ranch G-4-222932 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.14K | 852K | May 2006 – Jun 2023 |
| Woods Christian G-4-281121 | Merit Energy Company only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 1.13K | 281K | Aug 2016 – Feb 2022 |
| South Callaghan Ranch G-4-212814 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.13K | 540K | Jul 2005 – Aug 2026 |
| Ingram, Joe "A" O-8-27229 | Sojourner Drilling Corporation only | Callahan County Regular | Callahan | 1 | 1.12K | 0 | Apr 1995 – Apr 1999 |
| Callihan, M.W. O-1-6360 | Meb, LLC only | Luling-Branyon | Caldwell | 17 | 1.11K | 778 | by Jan 1993 – Aug 2026 |
| Coughran, G. W. O-8-10732 | Joint Resources Company only | Callahan County Regular | Callahan | 2 | 1.11K | 19 | by Jan 1993 – Apr 1995 |
| McAllen Fieldwide Unit G-4-38187 | Merit Energy Company only | McAllen (Elkins 6300, North) | Hidalgo | 1 | 1.09K | 149K | Jan 1994 – Dec 2001 |
| South Callaghan Ranch G-4-233060 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.09K | 232K | Oct 2007 – Aug 2026 |
| Rone, Frank O-8-19657 | DJM Beasley Well Service only | Callahan County Regular | Callahan | 5 | 1.08K | 19 | by Jan 1993 – Jul 2013 |
| Callihan, M. W. O-1-4606 | Meb, LLC only | Luling-Branyon | Caldwell | 2 | 1.07K | 164 | by Jan 1993 – Jul 2015 |
| Sinclair Atlantic G-3-146162 | Regal Petroleum Services only | Call-Forbes (Yegua 6560) | Jasper | 1 | 1.07K | 77K | Jul 1993 – May 1995 |
| Christian Woods G-4-80762 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 1.06K | 68K | Apr 1993 – Mar 1994 |
| South Callaghan Ranch G-4-256405 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.06K | 191K | May 2010 – Aug 2026 |
| South Callaghan Ranch G-4-143357 | Aldine Oil and Gas, LP only | Benavides (Lobo Cons.) | Webb | 1 | 1.05K | 644K | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-146062 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.05K | 1.73M | May 1993 – Aug 2026 |
| South Callaghan Ranch G-4-150817 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.05K | 1.28M | Aug 1994 – Aug 2026 |
| Hogan, Billie B. O-8-14095 | Wylie Bros. Prod. & Drgl. Co,inc only | Callahan County Regular | Callahan | 11 | 1.05K | 21 | by Jan 1993 – Feb 2002 |
| Callihan-Klutz O-1-6538 | Sotol Energy, Inc. only | Luling-Branyon | Caldwell | 1 | 1.04K | 20 | by Jan 1993 – Feb 2004 |
| Ramsey, Mary "B" O-8-14955 | Sweet Texas T Energy LLC only | Callahan County Regular | Callahan | 8 | 1.04K | 20 | by Jan 1993 – Jan 2014 |
| South Callaghan Ranch G-4-163683 | Aldine Oil and Gas, LP only | Dix Ranch (Lower Wilcox Lobo) | Webb | 1 | 1.03K | 1.29M | Jun 1997 – Aug 2026 |
| Bales 9400' Sand Unit G-4-214171 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 1.02K | 184K | Aug 2005 – Aug 2026 |
| McKinney, R. L. O-8-427 | Couch, Gilbert only | Callahan County Regular | Callahan | 14 | 1.02K | 21 | by Jan 1993 – Mar 1998 |
| South Callaghan Ranch G-4-196297 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.01K | 451K | Jul 2003 – Aug 2026 |
| Callicott Brothers O-8-29629 | Petrocat Innovations, LLC only | Stephens County Regular | Stephens | 2 | 1.01K | 1.16K | Apr 2004 – Jun 2026 |
| Morrissett "X" O-8-25204 | Jenn Oil only | Callahan County Regular | Callahan | 1 | 1.01K | 34 | by Jan 1993 – Oct 1997 |
| South Callaghan Ranch G-4-236447 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 1.01K | 140K | Mar 2008 – May 2015 |
| McAllen Fieldwide Unit G-4-52948 | Fina Oil & Chemical Company only | McAllen (Fowler) | Hidalgo | 1 | 1K | 259K | Feb 1993 – Mar 1998 |