| Slick, T.B. Estate B1 G-4-135379 | Frost, North (Ashby FB III) | Starr | 1 | 5.62K | 239K | Jan 1993 – Sep 2002 |
| Lundell E G-4-188400 | Lundell (Upper Cretaceous) | Webb | 1 | 0 | 19.4K | Oct 2001 – Jul 2002 |
| Slick, T. B. Estate B-486 G-4-168497 | Rincon (Vicksburg Sand) | Starr | 1 | 61.2K | 311K | Apr 1998 – Jun 2002 |
| University 4 G-9-186538 | Deer Canyon (Strawn) | Terrell | 1 | 557 | 50.1K | Oct 2001 – Apr 2002 |
| Benavides, B.R. "A" G-4-130339 | Jennings Ranch (Lobo Cons.) | Zapata | 1 | 35 | 414K | Jan 1993 – Apr 2002 |
| Carr "B" G-4-146856 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 7.07K | 911K | Sep 1993 – Jan 2002 |
| Lundell "B" G-4-103505 | La Perla (Lobo Cons.) | Zapata | 1 | 2 | 187K | Jan 1993 – Jan 2002 |
| St. Charles Co. G-4-146751 | St. Charles (Frio Cons., Upper) | Aransas | 1 | 12.8K | 445K | Oct 1993 – Dec 2001 |
| Carr "B" G-4-141832 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 3.6K | 510K | Jan 1993 – Dec 2001 |
| Carr G-4-122174 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 4.49K | 898K | Jan 1993 – Nov 2001 |
| Briones, E. L. G-4-162777 | La Perla (Lobo Cons.) | Zapata | 1 | 21 | 239K | Mar 1997 – Nov 2001 |
| Semmes Trust, et al "906" G-4-187213 | Rincon (90 Vicksburg 906-4) | Starr | 1 | 2.58K | 20.3K | Jul 2001 – Aug 2001 |
| Slick, T. B. Estate B G-4-149646 | Frost, West (VX-Wood) | Starr | 1 | 9.75K | 627K | Apr 1994 – Jul 2001 |
| Hein "B" G-4-125797 | Bruni Ranch (Wilcox 7250) | Webb | 1 | 13 | 128K | Jan 1993 – Jul 2001 |
| Lechenger G-4-166068 | Benavides (Lobo Cons.) | Webb | 1 | 12.3K | 1.37M | Dec 1997 – Jun 2001 |
| I.R. Gaona G-4-170507 | Benavides (Lobo Cons.) | Webb | 1 | 4.58K | 59.9K | Jun 1998 – Jun 2001 |
| McClung, Anna 1 G-9-179536 | Deer Canyon (Penn) | Terrell | 1 | 1.62K | 7.64K | Oct 2000 – Mar 2001 |
| La Perla G-4-179267 | La Perla (Lobo Cons.) | Zapata | 1 | 0 | 56.8K | Aug 2000 – Feb 2001 |
| Wehrle, E. F. G-4-41921 | Rincon (B-2 Frio) | Starr | 1 | 0 | 89.9K | Jan 1993 – Feb 2001 |
| Lechenger G-4-169260 | Benavides (Lobo Cons.) | Webb | 1 | 2.29K | 109K | Jul 1998 – Nov 2000 |
| Hubberd "F" G-4-163267 | Hubberd (Lobo) | Webb | 1 | 278 | 59K | May 1997 – Nov 2000 |
| Villarreal, C.G. G-4-119539 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 233 | 130K | Jan 1993 – Nov 2000 |
| Briones, E. L. G-4-166439 | La Perla (Lobo Cons.) | Zapata | 1 | 0 | 73K | Jan 1998 – Nov 2000 |
| Frost, P. M. "F" G-4-137887 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 401 | 261K | Jan 1993 – Oct 2000 |
| Stureman G-4-117275 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 20 | 23.5K | Nov 1996 – Oct 2000 |
| Creek Ranch 58 G-9-151756 | K M (Wolfcamp) | Terrell | 1 | 1.31K | 68.3K | Oct 1994 – Sep 2000 |
| Slick, T.B. Est. -A- G-4-68448 | Rincon (F) | Starr | 1 | 0 | 133K | Jan 1993 – Jun 2000 |
| Amando G-4-172581 | Vaquillas Ranch (Navarro) | Webb | 1 | 141 | 77.4K | Dec 1998 – May 2000 |
| Mosser, J. H. G-4-88227 | Blancas Creek (10850) | Zapata | 1 | 0 | 13.4K | Jul 1998 – Apr 2000 |
| Gonzales, P. Gas Unit G-4-139477 | Roleta (Wilcox Consolidated) | Zapata | 1 | 1.6K | 1M | Jan 1993 – Jan 2000 |
| Carr "B" G-4-139321 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 12.5K | 1.18M | Jan 1993 – Dec 1999 |
| Martin, J. C. G-4-63915 | J. C. Martin (Lobo) | Zapata | 1 | 0 | 290K | Jan 1993 – Dec 1999 |
| Lechenger G-4-170220 | Benavides (Lobo Cons.) | Webb | 1 | 0 | 7.34K | Sep 1998 – Oct 1999 |
| St. Charles Ranch Company G-4-172783 | St. Charles (Frio Cons., Upper) | Aransas | 1 | 12.2K | 179K | Nov 1998 – Aug 1999 |
| Hubberd G-4-173246 | Laredo (7900) | Webb | 1 | 305 | 15.6K | May 1999 – Jul 1999 |
| Lundell G-4-160509 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 21 | 11.4K | Dec 1996 – Jul 1999 |
| Independence 39 G-9-153899 | Broken Antler (Wolfcamp) | Terrell | 1 | 6.67K | 113K | Mar 1995 – Jun 1999 |
| La Perla G-4-155999 | La Perla Ranch (9100) | Zapata | 1 | 9 | 1.61M | Nov 1995 – Jun 1999 |
| Briones, E.L. G-4-147842 | La Perla (Lobo Cons.) | Zapata | 1 | 495 | 573K | Jan 1994 – May 1999 |
| Gonzales P. Gas Unit G-4-145163 | Roleta (Wilcox Consolidated) | Zapata | 1 | 61 | 56.8K | May 1993 – Mar 1999 |
| Slick, T.B. E-537 G-4-153713 | Rincon (a-2 Frio) | Starr | 1 | 0 | 119K | Feb 1995 – Mar 1999 |
| Vela, Serapio Heirs "B" G-4-124291 | Roleta (Wilcox Consolidated) | Zapata | 1 | 943 | 251K | Jan 1993 – Jan 1999 |
| Lundell G-4-119769 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 156 | 55.4K | Jan 1993 – Jan 1999 |
| Vela, Serapio Heirs "B" G-4-121831 | Roleta (Wilcox Consolidated) | Zapata | 1 | 34 | 24K | Jan 1993 – Jan 1999 |
| La Perla G-4-70631 | La Perla (Lobo Cons.) | Zapata | 1 | 12 | 16.8K | Jan 1993 – Jan 1999 |
| Jennings Ranch "B" G-4-116245 | Charco (9900) | Zapata | 1 | 3 | 82.9K | Jan 1993 – Jan 1999 |
| Vaquillas Ranch "C" G-4-125285 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 924 | 129K | Jan 1993 – Dec 1998 |
| McMurrey, William G-4-63916 | La Perla (Lobo Cons.) | Zapata | 1 | 190 | 683K | Jan 1993 – Dec 1998 |
| Benavides, B.R. "A" G-4-144299 | Jennings Ranch (Lobo Cons.) | Zapata | 1 | 43 | 62.2K | Feb 1993 – Nov 1998 |
| Lundell G-4-110678 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 35 | 13.3K | Jan 1993 – Nov 1998 |