| South Callaghan Ranch G-4-132251 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 389K | Jan 1993 – Sep 2012 |
| 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 |
| South Callaghan Ranch G-4-137225 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 196K | Jan 1993 – Dec 2012 |
| G. B. G. L and C. Co., Ltd. G-4-139714 | Michael Petroleum Corporation only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 10.3K | Jan 1993 – Feb 2001 |
| South Callaghan Ranch G-4-141435 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 123K | Jan 1993 – Nov 1993 |
| South Callaghan Ranch G-4-141490 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | Jan 1993 – Jul 2019 |
| South Callaghan Ranch G-4-141897 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 15.4K | Jan 1993 – Jan 1993 |
| South Callaghan Ranch G-4-142489 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 3.15M | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-142843 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.75M | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-142878 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 568K | Jan 1993 – Sep 2012 |
| South Callaghan Ranch G-4-143129 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 484K | Jan 1993 – Jun 2007 |
| South Callaghan Ranch G-4-143215 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 147K | Jan 1993 – Jul 1994 |
| South Callaghan Ranch G-4-143216 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 583K | Jan 1993 – Jul 2026 |
| South Callaghan Ranch G-4-143972 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 110K | Jan 1993 – Apr 1995 |
| South Callaghan Ranch G-4-144028 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.03M | Jan 1993 – Dec 2011 |
| South Callaghan Ranch G-4-144571 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.62M | Feb 1993 – Jul 2026 |
| South Callaghan Ranch G-4-144615 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 742K | Mar 1993 – Oct 2011 |
| G.B.G.L. & C. Co.,ltd. G-4-145326 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 0 | Jan 1993 – Oct 1993 |
| South Callaghan Ranch G-4-145735 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 145K | Apr 1993 – Feb 2010 |
| G.B.G.L. & C. G-4-146051 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 25.9K | Jun 1993 – Sep 1993 |
| South Callaghan Ranch G-4-146071 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 780K | Jun 1993 – Oct 2011 |
| 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 |
| G.B.G.L. & C. Co., L.T.D. G-4-146825 | Mobil Producing TX. & N.M. Inc. only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 617K | Sep 1993 – Feb 1994 |
| G.B.G.L. & C. Co., Ltd. G-4-148706 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 1.01M | Feb 1994 – Jun 2012 |
| South Callaghan Ranch G-4-162843 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 989K | May 1997 – Jul 2026 |
| South Callaghan Ranch G-4-163983 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 614K | Jul 1997 – Jul 2026 |
| South Callaghan Ranch G-4-164336 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 459K | Aug 1997 – Jul 2026 |
| South Callaghan Ranch G-4-165733 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 0 | Aug 1997 – Feb 2008 |
| South Callaghan Ranch G-4-167785 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | Apr 1998 – Jul 2026 |
| South Callaghan Ranch G-4-168179 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 0 | Apr 1998 – Feb 2008 |
| South Callaghan Ranch G-4-194690 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 434K | Mar 2003 – Jul 2026 |
| Stanford, P. H. G-4-196171 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 19.1K | Jul 2003 – Jul 2026 |
| South Callaghan Ranch G-4-196776 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 10.9K | Jun 2003 – Nov 2012 |
| South Callaghan Ranch G-4-197065 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 179 | Sep 2003 – Jul 2019 |
| South Callaghan Ranch G-4-198160 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 0 | Jun 2003 – Nov 2012 |
| South Callaghan Ranch G-4-199610 | Rosetta Resources Operating LP only | Beccero Creek (Lobo 2) | Webb | 1 | 0 | 0 | May 2003 – Jan 2008 |
| South Callaghan Ranch G-4-202466 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 55.3K | Apr 2004 – Nov 2012 |
| South Callaghan Ranch G-4-228839 | Rosetta Resources Operating LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 0 | 49.4K | Jul 2007 – Oct 2012 |