| McAllen Fieldwide Unit G-4-200680 | Shell Western E&P only | McAllen (Lower Frio) | Hidalgo | 1 | 7.43K | 574K | Sep 2003 – Nov 2008 |
| Snyder "117" O-8-29100 | Williams Deville Operating, Inc. only | Callahan County Regular | Callahan | 1 | 7.42K | 90 | Jan 2002 – Sep 2014 |
| Pharr Fieldwide Unit G-4-262312 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7.42K | 790K | Aug 2011 – Aug 2026 |
| South Callaghan Ranch G-4-144570 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 7.37K | 5.97M | by Jan 1993 – Aug 2026 |
| Turner, Evelyn G-4-195089 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7.37K | 4.29M | Mar 2003 – Jan 2023 |
| Callow 2 Unit G-6-164464 | Tanos Exploration II, LLC only | Carthage (Cotton Valley) | Panola | 1 | 7.35K | 1.03M | Jul 1997 – May 2017 |
| Beaurline, A. W. G-4-162825 | OXY USA Inc. only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 7.3K | 695K | Apr 1997 – Feb 2001 |
| Weber-McCall O-13-26049 | Trio Operating Company, Inc. only | Engle (Conglomerate 2ND) | Montague | 1 | 7.28K | 21 | by Jan 1993 – Jul 1995 |
| Steed, N. H., et Al O-13-2278 | WLH Production LLC only | Callisburg, SW. (Strawn 3300) | Cooke | 2 | 7.25K | 141 | by Jan 1993 – Aug 2025 |
| Jackson "A" O-8-15263 | Abernathy Auto, Inc. only | Callahan County Regular | Callahan | 9 | 7.23K | 22 | by Jan 1993 – Sep 2002 |
| Pharr Field Wide Unit G-4-193929 | Shell Western E&P only | McAllen (Lower Frio) | Hidalgo | 1 | 7.21K | 1.23M | Nov 2002 – Jun 2008 |
| McAllister G-14-228056 | Presidio Petroleum LLC only | Lister (Granite Wash) | Wheeler | 1 | 7.21K | 596K | Feb 2007 – Sep 2012 |
| Piercy, Callie "B" O-11-64267 | Momentum Operating Co., Inc. only | Levelland | Hockley | 1 | 7.14K | 35 | by Jan 1993 – Apr 2013 |
| McAllen Fieldwide Unit G-4-11944 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7.11K | 169K | Jun 1997 – Feb 2002 |
| McAllen, A. A. G-4-179941 | Shell Western E&P only | McAllen Ranch(vicksburg-U-V-,se) | Hidalgo | 1 | 7.1K | 220K | Aug 2000 – Sep 2000 |
| West McAllen Unit G-4-165040 | Total E&P USA, Inc. only | McAllen (Crutchfield) | Hidalgo | 1 | 7.1K | 2.39M | Jan 1997 – Aug 2002 |
| Pharr Fieldwide Unit G-4-136858 | Fina Oil & Chemical Company only | McAllen (Hansen) | Hidalgo | 1 | 7.07K | 222K | by Jan 1993 – May 1999 |
| Guerra, A. E. G-4-227946 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 7.05K | 3.14M | May 2007 – Aug 2019 |
| Schaefer "A" O-8-28830 | Callarman, David only | Arledge (Lake Sand) | Eastland | 1 | 7.03K | 7.44K | Jul 2000 – Aug 2026 |
| South Callaghan Ranch G-4-222820 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 7.01K | 2.4M | Aug 2006 – Aug 2026 |
| Pharr Fieldwide Unit G-4-162032 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7K | 1.13M | Dec 1996 – Oct 1999 |
| Neal, H. F. Estate "A" G-9-198539 | Callon Petroleum Operating Co only | Benedum (Devonian, Gas) | Upton | 1 | 6.94K | 234K | Jun 2003 – Dec 2010 |
| South Callaghan Ranch G-4-143898 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.94K | 3.65M | by Jan 1993 – Aug 2026 |
| Black, J. R. O-8-9984 | Humphrey-Bashford Oil, Inc. only | Callahan County Regular | Callahan | 2 | 6.9K | 48 | by Jan 1993 – Aug 2001 |
| Steed, N. H., et Al O-13-2274 | WLH Production LLC only | Callisburg, SW. (Strawn 2800) | Cooke | 1 | 6.87K | 21 | by Jan 1993 – Jun 2026 |
| South Callaghan Ranch G-4-241701 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.86K | 955K | Jun 2008 – Aug 2026 |
| South Callaghan Ranch G-4-228568 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.84K | 1.21M | Jun 2007 – Aug 2026 |
| McAllen, A. A. G-4-117219 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 6.83K | 298K | by Jan 1993 – Jul 2023 |
| South Callaghan Ranch G-4-141060 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo 1) | Webb | 1 | 6.83K | 7.41M | by Jan 1993 – Aug 2026 |
| Jackson, I. N. O-8-358 | Ohlhausen Oil Company only | Callahan County Regular | Callahan | 6 | 6.81K | 22 | by Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-41185 | Shell Western E&P only | McAllen (Marks FB C) | Hidalgo | 1 | 6.79K | 1.65M | by Jan 1993 – Dec 2004 |
| Henderson, E. E. O-8-324 | K R Well Technology, LLC only | Callahan County Regular | Callahan | 11 | 6.7K | 20 | by Jan 1993 – Dec 2020 |
| Callarman O-8-23887 | Interstate Explorations LLC only | Katlaco-Cook (Strawn) | Eastland | 1 | 6.67K | 46K | Jul 1996 – May 2023 |
| Callow 2 Unit G-6-255134 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 6.64K | 1.11M | Oct 2009 – Aug 2026 |
| Pharr Fieldwide Unit G-4-157553 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 6.63K | 692K | May 1995 – Aug 2026 |
| Pruett 2277 O-8-22547 | Sequoia Energy Resources only | Callahan County Regular | Callahan | 2 | 6.63K | 21 | by Jan 1993 – Aug 2004 |
| McAllen, A. A. G-4-124360 | Shell Western E&P only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 6.59K | 981K | by Jan 1993 – Jun 2005 |
| McCall Storey O-13-31015 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 3 | 6.58K | 113K | May 2008 – Oct 2009 |
| University "18-18" O-10-39337 | Callon Permian II, LLC only | Two Georges (Bone Spring) | Ward | 1 | 6.52K | 24.3K | Feb 2009 – May 2018 |
| Steed, N. H., et Al O-13-2272 | WLH Production LLC only | Callisburg, SW. (Strawn) | Cooke | 1 | 6.52K | 20 | Feb 1993 – Mar 2026 |
| Keirn, Pearl O-4-12644 | Fina Oil & Chemical Company only | McAllen (6900) | Hidalgo | 1 | 6.5K | 15K | Nov 1996 – Jun 1997 |
| Russell-Beamsley G-4-45714 | Cowrie Energy LLC only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 6.49K | 639K | by Jan 1993 – Jul 2017 |
| Pharr Fieldwide Unit G-4-223511 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 6.49K | 480K | Sep 2005 – Jul 2020 |
| Steed, N. H., et al -C- O-13-2276 | WLH Production LLC only | Callisburg, SW. (Strawn 3100) | Cooke | 1 | 6.47K | 20 | Feb 1993 – Jul 2026 |
| McAllen Fwu G-4-148710 | Totalfinaelf E&P USA Inc only | McAllen (Jackson 6200) | Hidalgo | 1 | 6.43K | 416K | Jun 1993 – Sep 2002 |
| McAllen Fieldwide Unit G-4-55187 | Fina Oil & Chemical Company only | McAllen (Marks) | Hidalgo | 1 | 6.43K | 408K | by Jan 1993 – May 1997 |
| Guerra, A.E. G-4-124157 | Texaco E & P Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 6.43K | 539K | by Jan 1993 – Apr 1993 |
| Shirley "B" O-8-21054 | Sweet Texas T Energy LLC only | Callahan County Regular | Callahan | 6 | 6.41K | 21 | by Jan 1993 – Apr 2010 |
| South Callaghan Ranch G-4-237354 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.38K | 755K | Mar 2008 – Aug 2026 |
| Callow 2 Unit G-6-163800 | Conocophillips Company only | Carthage (Cotton Valley) | Panola | 1 | 6.38K | 732K | Jun 1997 – Oct 2006 |