| McAllen Fieldwide Unit G-4-202132 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 208 | 25.9K | Jul 2003 – Jun 2004 |
| Purvis O-8-25469 | Petrox Energy Corporation only | Callahan County Regular | Callahan | 1 | 203 | 169 | by Jan 1993 – Feb 1995 |
| Etchison, Horace G-4-11905 | American Exploration Company only | McAllen (Jackson 6200) | Hidalgo | 1 | 203 | 14.7K | by Jan 1993 – Jan 1994 |
| South Callaghan Ranch G-4-164336 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 196 | 459K | Aug 1997 – Aug 2026 |
| McAllen, A.A. G-4-140068 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg P,n.) | Hidalgo | 1 | 194 | 54.4K | by Jan 1993 – May 1993 |
| Isenhower O-8-14658 | Smalley, Bill only | Callahan County Regular | Callahan | 6 | 193 | 10 | by Jan 1993 – Jul 1994 |
| Edwards, J. T. O-8-10664 | Calbro Oil & Gas Inc. only | Callahan County Regular | Callahan | 5 | 191 | 19 | by Jan 1993 – Jul 1994 |
| Callaghan Ranch G-4-149428 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (5200) | Webb | 1 | 191 | 667K | Apr 1994 – Jul 1999 |
| South Callaghan Ranch G-4-235894 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 182 | 27.5K | Jan 2008 – Aug 2026 |
| Franke North O-8-32210 | Premier Royalties, L.L.C. only | Callahan County Regular | Callahan | 3 | 180 | 0 | Jan 2018 – Jan 2019 |
| Bond, B. B. O-8-472 | Big Sky Energy only | Callahan County Regular | Callahan | 7 | 179 | 20 | by Jan 1993 – Jul 2001 |
| Ilse Unit G-3-263893 | Field Petroleum Corp. only | Callis (Frio 5170) | Wharton | 1 | 178 | 106K | Aug 2011 – May 2015 |
| McCall H. E. G-8-69719 | Kornye-Tillman Company only | Graford (Bend Conglomerate) | Palo Pinto | 1 | 172 | 199K | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-196172 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 171 | 435K | Jun 2003 – May 2013 |
| Fee G-4-163827 | XTO Energy Inc. only | McAllen, West (Elkins 6300) | Hidalgo | 1 | 165 | 22.1K | Jun 1997 – Nov 1999 |
| Eager, C. G-8-205503 | Sojourner Drilling Corporation only | Callahan County Regular (Gas) | Callahan | 1 | 159 | 261K | Dec 2004 – Apr 2026 |
| South Callaghan Ranch G-4-144026 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 156 | 1.37M | by Jan 1993 – Feb 2014 |
| Callaway G-13-221998 | Upp Operating, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 152 | 640K | Jul 2006 – May 2026 |
| Rio National Bank G-4-231016 | XTO Energy Inc. only | McAllen (Hackney Lake 6700) | Hidalgo | 1 | 150 | 94.2K | Sep 2007 – Jan 2010 |
| McCall, H. E. O-8-8399 | Ohlhausen Oil Company only | Claytonville (Canyon Sd. 5200) | Fisher | 1 | 147 | 3.24K | by Jan 1993 – Nov 2015 |
| South Callaghan Ranch G-4-226650 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 142 | 103K | Apr 2007 – May 2012 |
| South Callaghan Ranch G-4-144571 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 141 | 1.62M | Feb 1993 – Aug 2026 |
| Barton, W. B. O-8-28773 | Mehaffey Investments, Inc. only | Callahan County Regular | Callahan | 1 | 138 | 0 | Mar 2000 – Oct 2002 |
| South Callaghan Ranch G-4-196755 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 136 | 228K | Aug 2003 – Oct 2009 |
| Surles G-8-127077 | Bridger Petroleum, LLC only | Callahan County Regular (Gas) | Callahan | 1 | 135 | 4.78K | by Jan 1993 – Apr 1997 |
| Guyton O-8-26458 | Cg&st Energy Services only | Callahan County Regular | Callahan | 1 | 134 | 18 | Feb 1993 – Jul 1994 |
| McAllen, A. A. G-4-14054 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg L, R-1) | Hidalgo | 1 | 132 | 11.2K | by Jan 1993 – Feb 1993 |
| "4" Snyder Mineral Trust G-8-229705 | Glover, Michael C. only | Callahan County Regular (Gas) | Callahan | 1 | 131 | 7.62K | Oct 2007 – Feb 2011 |
| Williams O-8-31795 | Ampak Oil Company only | Callahan County Regular | Callahan | 1 | 130 | 17 | Mar 2015 – Mar 2019 |
| South Callaghan Ranch G-4-227859 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 128 | 30.3K | Jun 2007 – Oct 2011 |
| Jackson Estate -A- O-8-11132 | Whitten, W. C. only | Callahan County Regular | Callahan | 10 | 125 | 15 | by Jan 1993 – Sep 1994 |
| Walker, M.B. O-8-26108 | Bayou Operating Company, Inc. only | Callahan County Regular | Callahan | 1 | 121 | 3.2K | by Jan 1993 – Dec 1996 |
| McAllen Fieldwide Unit G-4-143365 | Fina Oil & Chemical Company only | McAllen (Graham 8500) | Hidalgo | 1 | 117 | 11.7K | by Jan 1993 – Oct 1993 |
| McAllen Fieldwide Unit G-4-11927 | Totalfinaelf E&P USA Inc only | McAllen (Card 7500) | Hidalgo | 1 | 114 | 19K | by Jan 1993 – Jan 1996 |
| Callison G-6-251748 | Diversified Production LLC only | Bethany (Travis Peak Cons.) | Harrison | 1 | 113 | 79.5K | Mar 2009 – Dec 2017 |
| South Callaghan Ranch G-4-226172 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 109 | 31.4K | Mar 2007 – Aug 2009 |
| Callaway #2 G-2-179374 | Canvas Energy LLC only | Morales (2710) | Jackson | 1 | 105 | 247K | Aug 2000 – Jul 2006 |
| Callaghan Ranch G-4-145783 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 103 | 234K | May 1993 – Oct 2004 |
| Callaway Gas Unit G-5-227296 | Hilcorp Energy Company only | Bald Prairie (CV Consolidated) | Robertson | 1 | 102 | 592K | Jan 2007 – Aug 2026 |
| Walraven O-8-13763 | H-B Oil Co. only | Callahan County Regular | Callahan | 1 | 101 | 19 | by Jan 1993 – Jul 1994 |
| McAllen Fieldwide Unit G-4-203221 | Total E&P USA, Inc. only | McAllen (Marks) | Hidalgo | 1 | 101 | 149K | May 2002 – Feb 2003 |
| Callison G-6-245695 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 100 | 1.22M | Nov 2008 – Jul 2026 |
| Hooks "91" G-8-241860 | Grayrock Energy II, LLC only | Callahan County Regular (Gas) | Callahan | 1 | 100 | 92.9K | Jul 2008 – Mar 2012 |
| Callaghan Ranch G-4-152834 | Mobil Producing TX. & N.M. Inc. only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 100 | 1.11M | Jan 1995 – Jun 1999 |
| South Callaghan Ranch G-4-165919 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 92 | 941K | Nov 1997 – Oct 2009 |
| Callaghan Ranch G-4-141421 | Dynamic Production, Inc. only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 90 | 46K | by Jan 1993 – Jun 1994 |
| Burnam G-8-91086 | Sweet Texas T Energy LLC only | Callahan County Regular (Gas) | Callahan | 1 | 90 | 7.09K | Apr 1994 – Feb 2003 |
| Grace O-8-23243 | H.A.N. Operating Incorporated only | Callahan County Regular | Callahan | 2 | 89 | 2 | Jul 1993 – Aug 1995 |
| Callaway G-13-236714 | Upp Operating, LLC only | Newark, East (Barnett Shale) | Hood | 1 | 89 | 1.59M | Oct 2006 – Jun 2026 |
| Roggenstein "M" O-8-20861 | King Oil & Gas Co. only | Callahan County Regular | Callahan | 4 | 88 | 8 | Jun 1995 – Nov 2001 |