| De Garcia, B. G. O-4-5652 | Kerr-McGee Oil & Gas Onshore LP | Garcia (Miller -A-) | Starr | 3 | 141K | 34.5K | Feb 1993 – Jun 2009 |
| Slick Estate -C- G-4-167973 | Kerr-McGee Oil & Gas Onshore LP | Borosa, E. (8270 Vicksburg) | Starr | 1 | 34.9K | 1.69M | Apr 1998 – Nov 2009 |
| Montalvo, N. R. O-4-13431 | Kerr-McGee Oil & Gas Onshore LP | Sun, North (6250) | Starr | 1 | 32K | 89K | Dec 2006 – Sep 2009 |
| Montalvo, N. R. O-4-10909 | Kerr-McGee Oil & Gas Onshore LP | Sun, North (F-3-D, Seg. 3) | Starr | 2 | 21.7K | 102K | by Jan 1993 – Oct 2001 |
| Garcia Land & Livestock Co. -A- O-4-5653 | Kerr-McGee Oil & Gas Onshore LP | Garcia (Miller -A-) | Starr | 1 | 21.2K | 53.6K | by Jan 1993 – Jul 2002 |
| Garcia L&L Co. O-4-13206 | Kerr-McGee Oil & Gas Onshore LP | Frost (Flores, Upper) | Starr | 2 | 16.7K | 12.5K | Jan 2004 – Dec 2008 |
| Hall, J. F. -State-A- G-4-103859 | Kerr-McGee Oil & Gas Onshore LP | Lyda (Vicksburg Lower) | Starr | 1 | 12.4K | 1.07M | by Jan 1993 – May 1998 |
| Hermann, A.G. Gas Unit G-4-208774 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 7.62K | 568K | Feb 2005 – Apr 2008 |
| Alvarez-Hinojosa Gas Unit G-4-142661 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 6.82K | 803K | by Jan 1993 – Jun 2007 |
| Hall, C.M. G-4-133012 | Kerr-McGee Oil & Gas Onshore LP | Rincon, North (Vicksburg 6700) | Starr | 1 | 6.34K | 1.33M | by Jan 1993 – Aug 2003 |
| Slick Estate -C- G-4-169473 | Kerr-McGee Oil & Gas Onshore LP | Borosa, N.W. (Vicksburg 9250) | Starr | 1 | 5.96K | 364K | Jul 1998 – Oct 2001 |
| Frost National Bank -A- O-4-13473 | Kerr-McGee Oil & Gas Onshore LP | Frost (Flores, Upper) | Starr | 1 | 5.01K | 4.59K | Feb 2008 – Nov 2008 |
| TCR Speer State G-4-169007 | Kerr-McGee Oil & Gas Onshore LP | Sun (B Rincon) | Starr | 1 | 4.62K | 1.46M | Jul 1998 – Aug 2002 |
| Champion, A.A. G-4-247590 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 4.32K | 157K | Jan 2009 – Jan 2010 |
| Champion, A. A. G-4-174046 | Kerr-McGee Oil & Gas Onshore LP | Frost (Samano Sand FB-A) | Starr | 1 | 3.64K | 731K | Jun 1999 – Nov 2007 |
| Champion, A. A. G-4-140985 | Kerr-McGee Oil & Gas Onshore LP | Frost (Flores, Upper) | Starr | 1 | 3.13K | 202K | by Jan 1993 – Aug 1999 |
| Degarcia-Champion Unit G-4-197093 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 2.88K | 41.1K | Aug 2003 – Apr 2005 |
| McKinney, Amanda G-4-226215 | Kerr-McGee Oil & Gas Onshore LP | Sun (H-1) | Starr | 1 | 2.87K | 45.2K | Jan 2007 – May 2007 |
| Speer, Geo. H. State -D- O-4-13232 | Kerr-McGee Oil & Gas Onshore LP | Lyda (Vicksburg Lower) | Starr | 1 | 2.5K | 2.91K | Jun 2004 – Oct 2006 |
| Montalvo, N. R. O-4-13384 | Kerr-McGee Oil & Gas Onshore LP | Sun, North (F-3-D) | Starr | 1 | 2.49K | 3.68K | Jul 2006 – Oct 2007 |
| TCR Speer-State G-4-171098 | Kerr-McGee Oil & Gas Onshore LP | Sun (B Rincon) | Starr | 1 | 2.31K | 813K | Dec 1998 – Aug 2007 |
| Speer, Geo. H. G-4-186387 | Kerr-McGee Oil & Gas Onshore LP | Lyda (Vicksburg Lower) | Starr | 1 | 2.1K | 562K | Dec 2001 – Nov 2007 |
| Reilly Heirs G-4-216046 | Kerr-McGee Oil & Gas Onshore LP | Alto Bonito (Yegua Consolidated) | Starr | 1 | 1.99K | 82.8K | Oct 2005 – Sep 2008 |
| Speer, Geo. H. State -D- G-4-227057 | Kerr-McGee Oil & Gas Onshore LP | Lyda (Rincon W) | Starr | 1 | 1.91K | 135K | Nov 2006 – Jun 2007 |
| Champion, A. A. G-4-174298 | Kerr-McGee Oil & Gas Onshore LP | Frost (Samano Sand FB-A) | Starr | 1 | 1.59K | 144K | Sep 1999 – Aug 2002 |
| Chapotal Land Co. -B- G-4-191301 | Kerr-McGee Oil & Gas Onshore LP | La Burrita Creek (Jackson) | Starr | 1 | 1.51K | 244K | Sep 2002 – Jun 2006 |
| Hall, J.F. State -A- G-4-135458 | Kerr-McGee Oil & Gas Onshore LP | Lyda (Vicksburg Lower) | Starr | 1 | 1.51K | 775K | by Jan 1993 – May 2001 |
| Champion, A. A. G-4-239745 | Kerr-McGee Oil & Gas Onshore LP | Borosa, S. (FB W Frio 4330) | Starr | 1 | 1.22K | 157K | Apr 2008 – Apr 2010 |
| Orive, A. G-4-175607 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 1.22K | 249K | Jan 2000 – Nov 2004 |
| Champion, A. A. G-4-174044 | Kerr-McGee Oil & Gas Onshore LP | Frost (Flores, Upper) | Starr | 1 | 1.01K | 361K | May 1999 – Jan 2008 |
| Champion, A.A. O-4-13467 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 806 | 1.85K | Jan 2008 – Sep 2008 |
| Cardenas, R.R. G-4-124829 | Kerr-McGee Oil & Gas Onshore LP | Frost (Vicksburg Mass.) | Starr | 1 | 581 | 32K | by Jan 1993 – Jan 1995 |
| De Garcia, B. G. G-4-169197 | Kerr-McGee Oil & Gas Onshore LP | Wildcat | Starr | 1 | 330 | 5.44K | Jun 1998 – Jun 1998 |
| Montalvo, N. R. G-4-209120 | Kerr-McGee Oil & Gas Onshore LP | Sun, North (6830) | Starr | 1 | 312 | 70.9K | Mar 2005 – Jul 2005 |
| Speer, George H. St. "B" G-4-158853 | Kerr-McGee Oil & Gas Onshore LP | Sun (F-2-A) | Starr | 1 | 169 | 57.1K | Mar 1996 – Mar 1997 |
| De Garcia, B. G. G-4-218398 | Kerr-McGee Oil & Gas Onshore LP | Braulia, East (7455 Vicksburg) | Starr | 1 | 146 | 10K | Jan 2006 – Jun 2006 |
| Chapotal Land Co. -B- G-4-193804 | Kerr-McGee Oil & Gas Onshore LP | La Burrita Creek (Frio) | Starr | 1 | 137 | 140K | Feb 2003 – Jun 2006 |
| Hall, J. F. State G-4-224187 | Kerr-McGee Oil & Gas Onshore LP | Rincon, North (Frio 4870) | Starr | 1 | 132 | 46.9K | Nov 2006 – Mar 2007 |
| McKinney, Amanda G-4-234016 | Kerr-McGee Oil & Gas Onshore LP | Sun (G-1) | Starr | 1 | 102 | 5.18K | Aug 2007 – Jan 2008 |
| Garcia L&L Co G-4-180821 | Kerr-McGee Oil & Gas Onshore LP | Frost (Samano) | Starr | 1 | 66 | 88.8K | Jan 2001 – May 2007 |
| A. G. Hermann Gas Unit G-4-195217 | Kerr-McGee Oil & Gas Onshore LP | Frost (Rincon 2A, Seg. II) | Starr | 1 | 22 | 65.1K | May 2003 – Dec 2004 |
| Frost National Bank -B- G-4-212683 | Kerr-McGee Oil & Gas Onshore LP | Alto Bonito (Yegua) | Starr | 1 | 20 | 149K | Jul 2005 – Aug 2005 |
| Chapotal Land Co. -A- G-4-233213 | Kerr-McGee Oil & Gas Onshore LP | Frost (Villarreal -A-) | Starr | 1 | 0 | 0 | — |
| Montalvo, N. R. G-4-233032 | Kerr-McGee Oil & Gas Onshore LP | Sun, N. (D-X-G, Seg. C) | Starr | 1 | 0 | 337 | Oct 2007 – Feb 2008 |
| Alvarez-Hinojosa Gas Unit G-4-234020 | Kerr-McGee Oil & Gas Onshore LP | Rincon (Vicksburg Cons.) | Starr | 1 | 0 | 0 | — |
| Chapotal Land Co. -A- G-4-201252 | Kerr-McGee Oil & Gas Onshore LP | Yturria (Chapotal) | Starr | 1 | 0 | 1 | Apr 2004 – Apr 2004 |
| Hall, C. M. -A- G-4-202305 | Kerr-McGee Oil & Gas Onshore LP | Lyda (7000 3RD. Vxbg.) | Starr | 1 | 0 | 6.41K | Jul 2004 – Aug 2007 |
| Slick Estate C G-4-258977 | Kerr-McGee Oil & Gas Onshore LP | Borosa, NW. (Vicksburg 8500) | Starr | 1 | 0 | 0 | — |
| Saenz, M. -State- G-4-184691 | Kerr-McGee Oil & Gas Onshore LP | Rincon, North (Frio 4870) | Starr | 1 | 0 | 0 | — |
| Chapotal Land Co. -B- G-4-223280 | Kerr-McGee Oil & Gas Onshore LP | Cortez, North (BB) | Starr | 1 | 0 | 2.72K | Nov 2006 – Nov 2006 |