| South Callaghan Ranch G-4-145689 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 3.44K | by Jan 1993 – May 1993 |
| Callaghan Ranch G-4-145653 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 234K | Apr 1993 – Sep 1995 |
| South Callaghan Ranch G-4-134062 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-144947 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 40.6K | Mar 1993 – May 1993 |
| South Callaghan Ranch G-4-144933 | Rosetta Resources Operating LP only | Callaghan (Wilcox) | Webb | 1 | 0 | 1.12M | Mar 1993 – Jun 2003 |
| South Callaghan Ranch G-4-144932 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 110K | Mar 1993 – Aug 1993 |
| South Callaghan Ranch G-4-144880 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 59.5K | by Jan 1993 – Mar 1995 |
| South Callaghan Ranch G-4-144615 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 742K | Mar 1993 – Apr 2006 |
| South Callaghan Ranch G-4-144574 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 1.7M | Feb 1993 – Jul 2004 |
| South Callaghan Ranch G-4-144573 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 666K | Feb 1993 – Apr 1995 |
| South Callaghan Ranch G-4-144567 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.18M | by Jan 1993 – Apr 2001 |
| South Callaghan Ranch G-4-144566 | Rosetta Resources Operating LP only | Dix Ranch (Lobo Stray) | Webb | 1 | 0 | 1.05M | Feb 1993 – May 2006 |
| South Callagahan Ranch G-4-144452 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 627K | Feb 1993 – Sep 1999 |
| South Callaghan Ranch G-4-144338 | Rosetta Resources Operating LP only | Beccero Creek (Wilcox, Lo.) | Webb | 1 | 0 | 214K | by Jan 1993 – May 1997 |
| South Callaghan Ranch G-4-150822 | Aldine Oil and Gas, LP only | Dix Ranch (Lower Wilcox Lobo) | Webb | 1 | 0 | 2.93M | Aug 1994 – Jan 2008 |
| South Callaghan Ranch G-4-144028 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.03M | by Jan 1993 – May 1997 |
| South Callaghan Ranch G-4-143972 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 110K | by Jan 1993 – Apr 1995 |
| South Callaghan Ranch G-4-143969 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.16M | by Jan 1993 – Dec 2005 |
| South Callaghan Ranch G-4-143954 | Rosetta Resources Operating LP only | Wildcat | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-165570 | Aldine Oil and Gas, LP only | Contempo (Lobo 1) | Webb | 1 | 0 | 135K | Nov 1997 – Mar 1998 |
| South Callaghan Ranch G-4-143895 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 760K | by Jan 1993 – Nov 2006 |
| South Callaghan Ranch G-4-143689 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 399K | by Jan 1993 – May 2003 |
| Beaurline, A. W. G-4-168184 | Merit Energy Company only | McAllen Ranch (Vicksburg S, E.) | Hidalgo | 1 | 0 | 0 | — |
| Guerra, A. E. G-4-170485 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-143678 | Rosetta Resources Operating LP only | Small Cowboy (Lobo 6) | Webb | 1 | 0 | 606K | by Jan 1993 – Nov 1994 |
| South Callaghan Ranch G-4-143536 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 420K | by Jan 1993 – Oct 2001 |
| South Callaghan Ranch G-4-143441 | Mobil Producing TX. & N.M. Inc. only | Big Cowboy (Lobo 1) | Webb | 1 | 0 | 97.2K | by Jan 1993 – Jun 1994 |
| South Callaghan Ranch G-4-143215 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 147K | by Jan 1993 – Jun 1994 |
| South Callaghan Ranch G-4-143208 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-143129 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 484K | by Jan 1993 – Sep 2006 |
| South Callaghan Ranch G-4-143121 | Rosetta Resources Operating LP only | Brettchance (Lobo 6) | Webb | 1 | 0 | 535K | by Jan 1993 – Apr 2004 |
| South Callaghan Ranch G-4-143033 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.02M | by Jan 1993 – Sep 2006 |
| South Callaghan Ranch G-4-142878 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 568K | by Jan 1993 – May 2007 |
| South Callaghan Ranch G-4-142877 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 715K | by Jan 1993 – Dec 2004 |
| McAllen, A. A. G-4-187559 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 0 | 1.1K | Mar 2014 – May 2014 |
| South Callaghan Ranch G-4-142873 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 553K | by Jan 1993 – Oct 2004 |
| South Callaghan Ranch G-4-142544 | Rosetta Resources Operating LP only | Callaghan (Wilcox) | Webb | 1 | 0 | 86.5K | by Jan 1993 – Apr 1996 |
| South Callaghan Ranch G-4-142532 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek(lobo 1) | Webb | 1 | 0 | 46.6K | by Jan 1993 – Apr 1994 |
| South Callaghan Ranch G-4-141898 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-141897 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 15.4K | by Jan 1993 – Jan 1993 |
| South Callaghan Ranch G-4-141895 | Rosetta Resources Operating LP only | Beccero Creek (Wilcox, Lo.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-141891 | Rosetta Resources Operating LP only | Brettchance (Lobo 2-A) | Webb | 1 | 0 | 561K | by Jan 1993 – Jun 1995 |
| South Callaghan Ranch G-4-141890 | Rosetta Resources Operating LP only | Brettchance, W. (Lobo 2) | Webb | 1 | 0 | 1.06M | by Jan 1993 – Aug 2006 |
| Beaurline, A. W. G-4-199142 | Merit Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-141490 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-141439 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek(lobo 1) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-200540 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.33M | Mar 2004 – Jun 2007 |
| South Callaghan Ranch G-4-141435 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 123K | by Jan 1993 – Nov 1993 |
| McAllen Fieldwide Unit G-4-213490 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-141434 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.24M | by Jan 1993 – Aug 2007 |