| McAllen Fieldwide Unit G-4-171732 | Totalfinaelf E&P USA Inc only | McAllen (Card 7500, Upper) | Hidalgo | 1 | 2.69K | 130K | Nov 1998 – Apr 1999 |
| Guitar "79" O-8-30136 | Grayrock Energy II, LLC only | Callahan County Regular | Callahan | 1 | 2.64K | 0 | May 2008 – Apr 2026 |
| South Callaghan Ranch G-4-222833 | Aldine Oil and Gas, LP only | Brettchance (Lobo 1) | Webb | 1 | 2.63K | 1.05M | Sep 2006 – Jul 2026 |
| South Callaghan Ranch G-4-150165 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.63K | 3.44M | Jun 1994 – Aug 2026 |
| South Callaghan Ranch Unit G-4-224612 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.6K | 263K | Jan 2007 – Aug 2026 |
| South Callaghan Ranch G-4-144879 | Aldine Oil and Gas, LP only | Contempo (Lobo 1) | Webb | 1 | 2.6K | 4.57M | Mar 1993 – Aug 2026 |
| Arco Call & Jones 'A' O-3-25117 | HD Operating Co, LLC only | Newton | Newton | 1 | 2.57K | 14.5K | Jul 2006 – Aug 2012 |
| Callaghan Ranch a/C 2 G-4-196287 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 2.56K | 422K | Aug 2002 – Oct 2011 |
| Weyerhauser G-4-160578 | XTO Energy Inc. only | McAllen (Coke 5800) | Hidalgo | 1 | 2.56K | 443K | Jul 1996 – Oct 2002 |
| McAllen, A. A. G-4-93584 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 2.54K | 180K | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-233183 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.53K | 509K | Oct 2007 – Aug 2026 |
| McAllen, A.A. -B- G-4-74131 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 2.52K | 114K | by Jan 1993 – Aug 2026 |
| McAllen, A. A. G-4-54906 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 2.52K | 65.7K | by Jan 1993 – Dec 1993 |
| Fee G-4-148562 | American Exploration Company only | McAllen (Dube 6500) | Hidalgo | 1 | 2.52K | 345K | Feb 1994 – May 1997 |
| Rio National Bank G-4-161705 | XTO Energy Inc. only | McAllen (Dube 6500) | Hidalgo | 1 | 2.47K | 1.09M | Jan 1997 – Jul 2007 |
| McAllen, A. A. G-4-182672 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 2.46K | 135K | Apr 2001 – Jan 2023 |
| Keirn, Pearl G-4-174753 | Merit Energy Company only | McAllen, So. (Fallen 8400) | Hidalgo | 1 | 2.44K | 1.17M | Aug 1999 – Aug 2026 |
| Greene Ranch O-8-26547 | Greene, R. E. only | Callahan County Regular | Callahan | 8 | 2.43K | 21 | by Jan 1993 – Mar 2009 |
| Callow 2 Unit G-6-284360 | Diversified Production LLC only | Carthage (Pettit, Lower) | Panola | 1 | 2.42K | 87.1K | Apr 2018 – Aug 2026 |
| Weyerhaeuser G-4-157170 | American Exploration Company only | McAllen (Hackney Lake North) | Hidalgo | 1 | 2.41K | 374K | Jan 1996 – Jul 1997 |
| South Callaghan Ranch G-4-232629 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.4K | 370K | Nov 2007 – Aug 2026 |
| Woods Christian G-4-38856 | OXY USA Inc. only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 2.39K | 188K | by Jan 1993 – Jan 1995 |
| McCall, Jack O., et Al G-10-37928 | Chevron U. S. A. Inc. only | Waha, West (Ellenburger) | Reeves | 1 | 2.38K | 4.67M | by Jan 1993 – Mar 2013 |
| Callahan, M. W. O-1-3717 | Meb, LLC only | Luling-Branyon | Caldwell | 4 | 2.35K | 406 | by Jan 1993 – Jun 2015 |
| South Callaghan Ranch Unit G-4-228084 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.34K | 521K | Mar 2007 – Aug 2026 |
| Callihan, M.W. -B- O-1-10664 | Meb, LLC only | Luling-Branyon | Caldwell | 1 | 2.34K | 173 | by Jan 1993 – Apr 2015 |
| Edington "A" O-8-13072 | K & W Vanpelt Company only | Callahan County Regular | Callahan | 5 | 2.33K | 89 | by Jan 1993 – Aug 2001 |
| Callahan, M. W., -A- O-1-3808 | Meb, LLC only | Luling-Branyon | Caldwell | 1 | 2.33K | 12.1K | by Jan 1993 – Jul 2015 |
| South Callaghan Ranch G-4-185247 | Aldine Oil and Gas, LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 2.33K | 1.32M | Sep 2001 – Aug 2021 |
| McAllen Fieldwide Unit G-4-142650 | Fina Oil & Chemical Company only | McAllen (Harding 6500) | Hidalgo | 1 | 2.33K | 467K | by Jan 1993 – Oct 1994 |
| Callihan, M. W. -A- O-1-6371 | Meb, LLC only | Luling-Branyon | Caldwell | 1 | 2.32K | 166 | Feb 1993 – Oct 2014 |
| Callaway, W. R. O-13-6996 | Richey, Ray Management Co., Inc. only | Hodge (Conglomerate, Upper) | Wise | 1 | 2.3K | 26.1K | by Jan 1993 – Jun 2005 |
| South Callaghan Ranch G-4-142489 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.29K | 3.16M | by Jan 1993 – Aug 2026 |
| Jones A.M. O-8-14686 | Rayco Operating, Inc. only | Callahan County Regular | Callahan | 1 | 2.29K | 21 | by Jan 1993 – Jun 1998 |
| South Callaghan Ranch G-4-243917 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.28K | 405K | Dec 2008 – Jun 2016 |
| South Callaghan Ranch G-4-232940 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 2.28K | 425K | Oct 2007 – Aug 2026 |
| Mitcham, G. P. O-8-25999 | L.C.S. Production Company only | Callahan County Regular | Callahan | 2 | 2.27K | 17.5K | by Jan 1993 – Feb 2000 |
| Beaurline, A. W. G-4-165081 | Gn&j LLC only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 2.27K | 571K | Sep 1997 – Jan 2018 |
| Snyder Mineral Trust 143 O-8-20859 | L.C.S. Production Company only | Callahan County Regular | Callahan | 2 | 2.26K | 194 | by Jan 1993 – Dec 2000 |
| Baum "A" O-8-27690 | D.J.F. Services, Inc. only | Callahan County Regular | Callahan | 1 | 2.22K | 0 | Oct 1995 – Feb 2019 |
| Roggenstein O-8-17896 | Masada Oil & Gas Company Ltd. only | Callahan County Regular | Callahan | 8 | 2.21K | 21 | by Jan 1993 – Sep 2005 |
| Mask O-8-29269 | RG1 Energy, LLC only | Callahan County Regular | Callahan | 3 | 2.21K | 0 | Jun 2003 – Sep 2010 |
| Crockett, D. T. O-8-6376 | Crockett Bros. of Cross Plains only | Callahan County Regular | Callahan | 2 | 2.19K | 87 | by Jan 1993 – Aug 2026 |
| Calliham G-14-111526 | Unbridled Resources, LLC only | Peery (Cleveland) | Ochiltree | 1 | 2.19K | 452K | by Jan 1993 – Jan 2017 |
| Brownlee G-14-133248 | Mewbourne Oil Company only | Callie Joe (Morrow Upper) | Ochiltree | 1 | 2.17K | 592K | by Jan 1993 – Feb 2025 |
| Pharr Fieldwide Unit G-4-267005 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 2.16K | 525K | Feb 2012 – Aug 2026 |
| Howe O-8-18970 | Sequoia Fossil Fuels, Inc. only | Callahan County Regular | Callahan | 11 | 2.16K | 19 | by Jan 1993 – Apr 1999 |
| McGarraugh G-14-134245 | Mewbourne Oil Company only | Callie Joe (Morrow Upper) | Ochiltree | 1 | 2.16K | 1.28M | by Jan 1993 – Dec 2024 |
| McAllen Fieldwide Unit G-4-171028 | Totalfinaelf E&P USA Inc only | McAllen (9400) | Hidalgo | 1 | 2.16K | 196K | May 1998 – Jan 2002 |
| Guerra, E. E. G-4-256162 | Dewbre Petroleum Corporation only | McAllen Ranch (Guerra) | Hidalgo | 1 | 2.16K | 273K | Mar 2010 – May 2023 |