| Von Blucher G-4-129375 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 611K | 8M | by Jan 1993 – Dec 2003 |
| Von Blucher G-4-136027 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 404K | 5.19M | by Jan 1993 – Apr 2017 |
| La Jolla G-4-138097 | Linn Operating, Inc. only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 259K | 1.96M | by Jan 1993 – Jan 1999 |
| La Jolla G-4-145366 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 210K | 2.08M | Mar 1993 – Dec 2003 |
| Gillespie Gas Unit G-4-178026 | Pangea's Edge Operating Co LLC only | Brayton, N. (Vicksburg 9150) | Nueces | 1 | 179K | 1.58M | May 2000 – Aug 2026 |
| Blucher, Von G-4-146276 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 133K | 1.66M | Jul 1993 – May 2017 |
| Gillespie Gas Unit G-4-225567 | Pangea's Edge Operating Co LLC only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 96.5K | 583K | Dec 2006 – Aug 2026 |
| Gillespie G-4-130959 | Alegre Operating, Inc. only | Brayton, N. (Vicksburg 11,100 A) | Nueces | 1 | 93.6K | 1.24M | by Jan 1993 – Nov 2000 |
| Blucher, Von G-4-146142 | Devon Energy Production Co, L.P. only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 86K | 715K | Jun 1993 – Jun 2011 |
| Von Blucher G-4-130241 | Devon Energy Production Co, L.P. only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 74.5K | 1.09M | by Jan 1993 – Oct 2008 |
| Blucher, Von G-4-147259 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 60.7K | 871K | Oct 1993 – Aug 2026 |
| Schulze, Herbert K et Al G-4-173536 | Hughes, Dan A. Company, L.P. only | Brayton, N. (Vx. Causey) | Nueces | 1 | 59K | 1.51M | Apr 1999 – Mar 2007 |
| Ripple, Roddy O-4-12661 | Wallis Energy, Inc. only | Brayton, N. (Vicksburg 8950) | Nueces | 1 | 40.1K | 169K | Apr 1997 – Jun 2026 |
| Von Blucher O-4-12701 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 39.6K | 152K | Jul 1997 – Jul 2014 |
| La Jolla G-4-145367 | Pennzoil Exploration & Prod. Co. only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 38.7K | 104K | Feb 1993 – Jan 1998 |
| Bernsen, Sr., Leon R. O-4-13304 | Vision Oil and Gas LLC only | Brayton, N. (Vicksburg 9900) | Nueces | 1 | 38.6K | 225K | Jan 2005 – Feb 2025 |
| La Jolla G-4-166996 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 36.6K | 296K | Jan 1998 – Jan 2015 |
| Prieto G-4-149002 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 21.4K | 383K | Mar 1994 – Aug 2026 |
| Von Blucher G-4-247818 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 21.2K | 200K | Oct 2008 – Aug 2026 |
| State Tract 457 G-4-151303 | Chaparral Energy, L.L.C. only | Mustang Island (Stray 10) | Nueces | 1 | 20.1K | 613K | Sep 1994 – Oct 2010 |
| Gillespie Gas Unit G-4-174524 | Wadi Operating, LLC only | Brayton, N. (Vicksburg 10540) | Nueces | 1 | 19.5K | 115K | Jul 1999 – May 2000 |
| Ray, Roy O-4-39 | Wallis Energy, Inc. only | Agua Dulce | Nueces | 1 | 19.1K | 470 | by Jan 1993 – Jun 2026 |
| La Jolla G-4-143201 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 16.6K | 306K | by Jan 1993 – Aug 2026 |
| Blucher, Von G-4-136173 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 16.3K | 185K | by Jan 1993 – Nov 2015 |
| Ripple, Roddy G-4-155499 | Lomak Production Company only | Brayton, N. (Vicksburg 8950) | Nueces | 1 | 15.8K | 83K | Aug 1995 – Mar 1997 |
| Von Blucher G-4-262426 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 13.8K | 210K | Aug 2011 – Aug 2026 |
| La Jolla G-4-138098 | Linn Operating, Inc. only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 13.5K | 57.3K | by Jan 1993 – Oct 2016 |
| Simmonds & Perry G-4-264339 | EOG Resources, Inc. only | Brayton, N. (Vicksburg 10,000) | Nueces | 1 | 12.9K | 132K | Dec 2011 – Oct 2013 |
| Gillespie O-4-13006 | Alegre Operating, Inc. only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 11.3K | 40.8K | Feb 2001 – Jun 2026 |
| Gillespie Unit G-4-117281 | Range Production Company only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 6.6K | 481K | by Jan 1993 – Mar 2000 |
| Schulze, Herbert K. et Al G-4-109838 | Hughes, Dan A. Company only | Brayton, N. (Vicksburg 9900) | Nueces | 1 | 6.47K | 456K | by Jan 1993 – Mar 1999 |
| Gillespie Gas Unit G-4-238088 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 9150) | Nueces | 1 | 6.11K | 165K | Feb 2008 – Oct 2009 |
| Von Blucher G-4-119556 | Pennzoil Exploration & Prod. Co. only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 5.65K | 202K | by Jan 1993 – May 1996 |
| Rivers/Perry et al Unit G-4-260627 | Suemaur Expl. & Prod., LLC only | Brayton (7830) | Nueces | 1 | 5.54K | 373K | Jan 2011 – Oct 2015 |
| Gillespie Unit O-4-11100 | Alegre Operating, Inc. only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 5.48K | 10.1K | by Jan 1993 – Jul 1998 |
| State Tract 467 G-4-151302 | Bristol Resources Corporation only | Mustang Island (Stray 10) | Nueces | 1 | 5.1K | 365K | Jun 1994 – Jul 1997 |
| Simmonds & Perry G-4-124474 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 9900) | Nueces | 1 | 4.9K | 74.5K | by Jan 1993 – May 1999 |
| Simmond&perry G-4-127448 | Suemaur Expl. & Prod., LLC only | Brayton (8300) | Nueces | 1 | 4.36K | 399K | by Jan 1993 – Dec 1997 |
| Driscoll, Clara O-4-9256 | Vintage Petroleum, Inc. only | Brayton, E. (Gandy) | Nueces | 2 | 4.15K | 21 | by Jan 1993 – Nov 1994 |
| Gillespie G. U. G-4-227793 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 9900) | Nueces | 1 | 4.13K | 76.7K | Apr 2007 – Jan 2008 |
| Gillespie G-4-177949 | Range Production Company only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 3.51K | 13K | Apr 2000 – Jan 2001 |
| State Tract 466 G-4-150552 | Bristol Resources Corporation only | Mustang Island (Stray 10) | Nueces | 1 | 3.45K | 628K | May 1994 – Jan 1997 |
| Gillespie Gas Unit G-4-225514 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 9900) | Nueces | 1 | 3.43K | 19.8K | Oct 2006 – Dec 2006 |
| Simmonds & Perry G-4-110902 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 10,000) | Nueces | 1 | 3.34K | 67.6K | by Jan 1993 – May 1999 |
| Simmonds & Perry G-4-131308 | Suemaur Expl. & Prod., LLC only | Brayton, N. (Vicksburg 10,400) | Nueces | 1 | 2.59K | 13.4K | by Jan 1993 – Jan 1996 |
| State Tract 458 G-4-151596 | Chaparral Energy, L.L.C. only | Mustang Island (Stray 10) | Nueces | 1 | 2.58K | 116K | Sep 1994 – Jun 2002 |
| Gillespie Unit O-4-11837 | Alegre Operating, Inc. only | Brayton, N. (Vicksburg 11,150) | Nueces | 1 | 2.46K | 28 | by Jan 1993 – Mar 1998 |
| Simmonds & Perry O-4-12395 | Suemaur Expl. & Prod., LLC only | Brayton (7220 Sand) | Nueces | 1 | 2.4K | 489 | Oct 1994 – Apr 1995 |
| Ripple, Roddy O-4-10295 | Lomak Production Company only | Brayton, N. (Vicksburg 9250) | Nueces | 1 | 1.9K | 30.7K | by Jan 1993 – Aug 1995 |
| La Jolla O-4-11689 | Pennzenergy Exp. & Prod., L.L.C. only | Brayton, N. (Vicksburg 9450) | Nueces | 1 | 1.59K | 9.85K | by Jan 1993 – Dec 1995 |