| Williams, R. D. O-8-509 | Hunter Oil & Gas Co. only | Callahan County Regular | Callahan | 10 | 993 | 50 | by Jan 1993 – Mar 1997 |
| Granny O-8-31570 | Nosivad Oil, Inc. only | Callahan County Regular | Callahan | 1 | 990 | 0 | Aug 2014 – Aug 2021 |
| Callaghan Ranch G-4-205986 | Hilcorp Energy Company only | Finley-Webb (Lobo Cons) | Webb | 1 | 982 | 773K | Dec 2004 – Jun 2020 |
| South Callaghan Ranch G-4-163983 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 979 | 617K | Jul 1997 – Aug 2026 |
| South Callaghan Ranch G-4-235056 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 970 | 174K | Dec 2007 – Aug 2026 |
| South Callaghan Ranch G-4-170939 | Aldine Oil and Gas, LP only | Benavides (Lobo Cons.) | Webb | 1 | 954 | 659K | Sep 1998 – Aug 2026 |
| Beaurline, A. W. G-4-170734 | Gn&j LLC only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 948 | 295K | Sep 1998 – Jun 2019 |
| Guerra, E. E. G-4-294778 | Dewbre Petroleum Corporation only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 947 | 117K | May 2023 – Aug 2026 |
| La Reata O-8-28622 | Blue Oil, Inc. only | Callahan County Regular | Callahan | 1 | 939 | 3.43K | Jun 1999 – Dec 2004 |
| Callaghan Ranch G-4-115090 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 937 | 733K | May 1993 – Jan 2005 |
| Pippen, J.L. "A" O-8-471 | Stewart, Joseph Thomas only | Callahan County Regular | Callahan | 10 | 927 | 82 | by Jan 1993 – Feb 2001 |
| Callaway O-10-21950 | Parker & Parsley Development Co. only | Spraberry (Trend Area) | Martin | 1 | 926 | 11.9K | by Jan 1993 – Feb 1994 |
| South Callaghan Ranch G-4-146338 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 924 | 514K | Aug 1993 – Aug 2026 |
| South Callaghan Ranch G-4-196873 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 914 | 300K | May 2003 – Aug 2026 |
| Snyder-189 O-8-30024 | American Operating Company (A) only | Callahan County Regular | Callahan | 2 | 914 | 0 | Jan 2008 – Mar 2014 |
| McAllen, A. A. G-4-136225 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg R) | Hidalgo | 1 | 902 | 39.4K | by Jan 1993 – Jan 1994 |
| South Callaghan Ranch G-4-223920 | Aldine Oil and Gas, LP only | Brettchance (Lobo 1) | Webb | 1 | 880 | 237K | Jan 2007 – Apr 2022 |
| McCall Family O-13-33112 | Eagleridge Operating, LLC only | Montague County Regular | Montague | 1 | 880 | 5.33K | Jun 2014 – Mar 2017 |
| Callaghan Ranch G-4-100523 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 872 | 663K | by Jan 1993 – Jul 2002 |
| South Callaghan Ranch G-4-254237 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 849 | 128K | Nov 2009 – Nov 2013 |
| Ramsey, Mary "C" O-8-14956 | Sweet Texas T Energy LLC only | Callahan County Regular | Callahan | 4 | 848 | 20 | by Jan 1993 – Nov 2010 |
| Callison G-6-242014 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 846 | 237K | Jul 2008 – Jan 2026 |
| South Callaghan Ranch G-4-144934 | Aldine Oil and Gas, LP only | Benavides (Lobo Cons.) | Webb | 1 | 846 | 2.72M | Feb 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-229289 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 842 | 153K | Apr 2007 – Aug 2026 |
| Clemmer O-8-16941 | T & B Oil & Gas only | Callahan County Regular | Callahan | 3 | 823 | 33 | by Jan 1993 – Sep 1995 |
| South Callaghan Ranch G-4-145288 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo 1) | Webb | 1 | 820 | 2.81M | Apr 1993 – Aug 2026 |
| Callison-Joie G-6-287226 | Diversified Production LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 819 | 11.6M | May 2019 – Aug 2026 |
| South Callaghan Ranch G-4-225093 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 799 | 231K | Feb 2007 – Aug 2026 |
| South Callaghan Ranch G-4-223433 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 788 | 658K | Oct 2006 – Aug 2026 |
| South Callaghan Ranch O-4-12731 | Mobil Producing TX. & N.M. Inc. only | Dos Payasos (Lobo Stray) | Webb | 1 | 783 | 5.59K | Oct 1997 – Apr 1998 |
| Geoterre Operating Hankamer #1 G-3-298119 | Geoterre Operating, L.L.C. only | Call, West (Y-2) | Newton | 1 | 771 | 35.2K | Nov 2023 – Mar 2025 |
| Wagley, H.V. O-8-18089 | Stewart, Joseph Thomas only | Callahan County Regular | Callahan | 10 | 752 | 82 | by Jan 1993 – Feb 2001 |
| Jackson "5" O-8-23201 | Sequoia Fossil Fuels, Inc. only | Callahan County Regular | Callahan | 1 | 752 | 17 | by Jan 1993 – Jun 1994 |
| Meadows, C.C. O-8-16650 | Tracker Mineral only | Callahan County Regular | Callahan | 2 | 747 | 48 | by Jan 1993 – Dec 1996 |
| Hooks "91" O-8-30221 | Grayrock Energy II, LLC only | Callahan County Regular | Callahan | 1 | 741 | 16.6K | Nov 2008 – Apr 2020 |
| Bowne "2989" G-8-144442 | Van Operating, Ltd. only | Callahan, NE (Congl) | Callahan | 1 | 740 | 253K | Mar 1993 – Jun 2002 |
| McAllen, Robert A. G-4-203580 | Merit Energy Company only | The Doxology (LWR Vicksburg Cons | Hidalgo | 1 | 731 | 430K | Dec 2003 – Nov 2017 |
| Williams. L.L. O-8-27015 | Sequoia Fossil Fuels, Inc. only | Callahan County Regular | Callahan | 1 | 720 | 8.37K | Sep 1993 – Aug 1997 |
| South Callaghan Ranch G-4-143897 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 713 | 1.56M | by Jan 1993 – Aug 2026 |
| Callison-Sinclair-Joie G-6-287286 | Diversified Production LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 708 | 8.29M | Apr 2019 – Jan 2026 |
| McFarlane, J. W. -A- O-8-6990 | Furry Oil & Gas, Inc. only | Callahan County Regular | Callahan | 7 | 705 | 63 | by Jan 1993 – May 1998 |
| Parks O-8-30505 | Iron Bell Operating, LLC only | Callahan County Regular | Callahan | 1 | 705 | 0 | Mar 2010 – Apr 2021 |
| McAllen, Robert G-4-232947 | Merit Energy Company only | The Doxology (LWR Vicksburg Cons | Hidalgo | 1 | 704 | 1.69M | Oct 2007 – Mar 2019 |
| Pharr Fieldwide Unit G-4-189505 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 704 | 39.7K | May 2001 – Apr 2002 |
| South Callaghan Ranch G-4-151532 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo) | Webb | 1 | 699 | 1.95M | Oct 1994 – Aug 2026 |
| Sanders, J. O-8-22290 | King Energy Resources only | Callahan County Regular | Callahan | 1 | 694 | 18 | by Jan 1993 – Feb 1999 |
| Ramsey, Mary "A" O-8-14954 | Sweet Texas T Energy LLC only | Callahan County Regular | Callahan | 10 | 686 | 20 | by Jan 1993 – Aug 2011 |
| Allen-Barnard O-8-27297 | Nosivad Oil, Inc. only | Callahan County Regular | Callahan | 1 | 686 | 17 | Jul 1994 – Feb 1997 |
| South Callaghan Ranch G-4-129445 | Aldine Oil and Gas, LP only | Benavides (Lobo Cons.) | Webb | 1 | 676 | 357K | by Jan 1993 – Aug 2026 |
| South Callaghan Ranch G-4-168054 | Aldine Oil and Gas, LP only | Contempo (Lobo 2) | Webb | 1 | 673 | 434K | Apr 1998 – Aug 2026 |