| Guerra, A.E. G-4-154348 | Texaco E & P Inc. only | McAllen Ranch (Vicksburg Y) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-153829 | Rosetta Resources Operating LP only | Big Cowboy (Middle Wilcox) | Webb | 1 | 0 | 191K | Apr 1995 – Oct 1996 |
| McAllen Fieldwide Unit G-4-153650 | Fina Oil & Chemical Company only | Wildcat | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-153317 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 775K | Jan 1995 – Sep 2000 |
| South Callaghan Ranch G-4-152611 | Rosetta Resources Operating LP only | Contempo (Lobo 2) | Webb | 1 | 0 | 372K | Oct 1994 – Jan 2006 |
| South Callaghan Ranch G-4-134062 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-152591 | Rosetta Resources Operating LP only | Callaghan, N. (Wilcox, Lo.) | Webb | 1 | 0 | 1.12M | Nov 1994 – Jun 2003 |
| Callaghan Ranch G-4-151530 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 0 | — |
| Callaghan Ranch G-4-151204 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-150661 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 40.6K | Jun 1994 – Aug 1995 |
| South Callaghan Ranch G-4-150586 | Rosetta Resources Operating LP only | Big Cowboy (Middle Wilcox) | Webb | 1 | 0 | 118K | May 1994 – Aug 1999 |
| South Callaghan Ranch G-4-150167 | Petropoint Energy Operating, LLC only | Dix Ranch(lobo 1) | Webb | 1 | 0 | 808K | Jul 1994 – Jul 2006 |
| South Callaghan Ranch G-4-150163 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 883K | Jun 1994 – Jul 2007 |
| South Callaghan Ranch G-4-150024 | Mobil Producing TX. & N.M. Inc. only | Big Cowboy (Lobo 1) | Webb | 1 | 0 | 263K | May 1994 – Mar 1995 |
| South Callaghan Ranch G-4-149934 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 6) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-149684 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.3M | May 1994 – Jun 2006 |
| 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-4-148490 | Rosetta Resources Operating LP only | Callaghan, N. (Lobo Stray) | Webb | 1 | 0 | 40.5K | Nov 1993 – Jun 2003 |
| South Callaghan Ranch G-4-147791 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 189K | Dec 1993 – Jul 1995 |
| South Callaghan Ranch G-4-147739 | Rosetta Resources Operating LP only | Dos Payasos (Wilcox 5100) | Webb | 1 | 0 | 3.55K | by Jan 1993 – Feb 1993 |
| South Callaghan Ranch G-4-147688 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.48M | Dec 1993 – Oct 2007 |
| 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-4-146489 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 317K | Jul 1993 – Dec 1993 |
| Callaghan Ranch G-4-146354 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (5200) | Webb | 1 | 0 | 261K | Jul 1993 – Aug 1998 |
| South Callaghan Ranch G-4-146071 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 780K | Jun 1993 – Oct 1997 |
| Guerra, A. E. G-4-170485 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-145805 | Calpine Natural Gas L.P. only | Benavides (Lobo Cons.) | Webb | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-145735 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 145K | May 1993 – Oct 1997 |
| 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-4-144947 | 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-4-144028 | 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-4-143895 | 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 |
| South Callaghan Ranch G-4-143678 | Rosetta Resources Operating LP only | Small Cowboy (Lobo 6) | Webb | 1 | 0 | 606K | by Jan 1993 – Nov 1994 |
| Beaurline, A. W. G-4-199142 | Merit Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 0 | 0 | — |
| South Callaghan Ranch G-4-143536 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 420K | by Jan 1993 – Oct 2001 |