| South Callaghan Ranch O-4-13565 | L.T.D. Explorations Inc. only | Brettchance (Middle Wilcox) | Webb | 1 | 25.3K | 0 | Mar 2009 – Jul 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 – Sep 1998 |
| Callaghan Ranch G-1-294176 | EOG Resources, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 0 | 0 | Jan 2023 – Jul 2026 |
| Callaghan Ranch G-4-48969 | Mobil Producing TX. & N.M. Inc. only | Hirsch (6900) | — | 1 | 0 | 0 | Jan 1993 – Jun 2001 |
| Callaghan Ranch G-4-49615 | Mobil Producing TX. & N.M. Inc. only | Hirsch (Wilcox 6250) | — | 1 | 0 | 5.76K | Jan 1993 – Jun 2001 |
| Callaghan Ranch G-4-49616 | Mobil Producing TX. & N.M. Inc. only | Hirsch (Wilcox 6250) | — | 1 | 0 | 10 | Jan 1993 – Jun 2001 |
| Callaghan Ranch G-4-50108 | Mobil Producing TX. & N.M. Inc. only | Hirsch (Wilcox 6250) | — | 1 | 0 | 0 | Jan 1993 – May 2001 |
| Callaghan Ranch G-4-62185 | EOG Resources, Inc. only | Finley-Webb (Wilcox 5800) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Callaghan Ranch G-4-70312 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 32.9K | Jan 1993 – Sep 1994 |
| Callaghan Ranch G-4-70528 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | — | 1 | 0 | 425K | Jan 1993 – Apr 2012 |
| Callaghan Ranch G-4-70964 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5800) | — | 1 | 0 | 0 | Jan 1993 – Apr 2002 |
| Callaghan Ranch G-4-79343 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 27.4K | Jan 1993 – May 2012 |
| Callaghan Ranch G-4-86208 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 100 | Jan 1993 – Jul 1993 |
| South Callaghan Ranch G-4-90874 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 1.96K | Jan 1993 – Mar 1993 |
| Callaghan Ranch G-4-92530 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (5100) | Webb | 1 | 0 | 20.1K | Jan 1993 – Jul 1994 |
| Callaghan Ranch G-4-95751 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Callaghan Ranch G-4-100523 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 663K | Jan 1993 – Nov 2003 |
| Callaghan Ranch G-4-100524 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 0 | Jan 1993 – Apr 1993 |
| Callaghan Ranch G-4-115090 | Chesapeake Operating, Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 733K | Jan 1993 – May 2012 |
| Callaghan Ranch G-4-115092 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Callaghan Ranch G-4-117832 | Mobil Producing TX. & N.M. Inc. only | Hirsch (6900) | Webb | 1 | 0 | 305K | Jan 1993 – Oct 1999 |
| South Callaghan Ranch G-4-119780 | Aldine Oil and Gas, LP only | Brettchance (Lobo 6) | Webb | 1 | 0 | 1.38M | Jan 1993 – Jul 2026 |
| Callaghan Ranch G-4-124475 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 0 | Jan 1993 – Sep 1993 |
| Callaghan Ranch G-4-125870 | Chesapeake Operating, Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 347K | Jan 1993 – May 2013 |
| South Callaghan Ranch G-4-127869 | Aldine Oil and Gas, LP only | Beccero Creek (Wilcox, Lo.) | Webb | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-128988 | Rosetta Resources Operating LP only | Contempo (Lobo) | Webb | 1 | 0 | 0 | Jan 1993 – Jan 2009 |
| South Callaghan Ranch G-4-129445 | Aldine Oil and Gas, LP only | Contempo (Lobo) | Webb | 1 | 0 | 357K | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-129655 | Aldine Oil and Gas, LP only | Beccero Creek (7000 Wilcox) | Webb | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-130732 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 311K | Jan 1993 – Sep 2012 |
| South Callaghan Ranch G-4-131666 | Aldine Oil and Gas, LP only | Brettchance (Lobo 2-A) | Webb | 1 | 0 | 93.9K | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-131672 | Calpine Natural Gas L.P. only | Big Cowboy (Lobo) | Webb | 1 | 0 | 306K | Jan 1993 – Jun 2003 |
| South Callaghan Ranch G-4-132251 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 389K | Jan 1993 – Sep 2012 |
| Callaghan Ranch G-4-133163 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 396K | Jan 1993 – Mar 2021 |
| South Callaghan Ranch G-4-134023 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 177K | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-134024 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-134062 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Callaghan Ranch G-4-134208 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 0 | 51K | Jan 1993 – Apr 1994 |
| Callaghan Ranch G-4-134212 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 3.28M | Jan 1993 – May 2013 |
| South Callaghan Ranch G-4-135453 | Aldine Oil and Gas, LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 1.99M | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-136952 | Mobil Producing TX. & N.M. Inc. only | Brettchance, West (Lobo 6) | Webb | 1 | 0 | 2.54K | Jan 1993 – Apr 1995 |
| South Callaghan Ranch G-4-137225 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 196K | Jan 1993 – Dec 2012 |
| South Callaghan Ranch G-4-137330 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 144K | Jan 1993 – Mar 2008 |
| South Callaghan Ranch G-4-137476 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Wilcox, Lo.) | Webb | 1 | 0 | 0 | Jan 1993 – Jan 1993 |
| South Callaghan Ranch G-4-138684 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 537K | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-138971 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 609K | Jan 1993 – Dec 2012 |
| South Callaghan Ranch G-4-138989 | Rosetta Resources Operating LP only | Dix Ranch(lobo 1) | Webb | 1 | 0 | 222K | Jan 1993 – Oct 2011 |
| Callaghan Ranch G-4-139349 | Mobil Producing TX. & N.M. Inc. only | Wildcat | Webb | 1 | 0 | 0 | Jan 1993 – May 1993 |
| Callaghan Ranch G-4-139467 | Mobil Producing TX. & N.M. Inc. only | Wildcat | Webb | 1 | 0 | 0 | Jan 1993 – Apr 1993 |
| Callaghan Ranch G-4-139545 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 0 | Jan 1993 – May 2012 |
| South Callaghan Ranch G-4-139681 | Mobil Producing TX. & N.M. Inc. only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 9.98K | Jan 1993 – Nov 1993 |