| Weatherby - Weatherby Gas Unit G-4-161940 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 191 | 6.35M | Jan 1997 – Apr 2026 |
| Hoff, Edwina G-2-137803 | Block "T" Petroleum, Inc. | Arneckeville, S. (Y-1,OIL) | De Witt | 1 | 182 | 28K | Jan 1993 – Aug 1995 |
| Shovlin Vehle G-4-241021 | Block "T" Petroleum, Inc. | Las Hermanitas (House Sand) | Duval | 1 | 142 | 1.54M | May 2008 – Apr 2026 |
| Wernecke "B" G-4-210402 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 118 | 1.9M | May 2005 – Apr 2026 |
| Weatherby, L.C. Gas Unit G-4-133007 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 118 | 7.2M | Jan 1993 – Jun 2016 |
| Shovlin Vehle G-4-270623 | Block "T" Petroleum, Inc. | Las Hermanitas (Wilcox Cons.) | Duval | 1 | 96 | 9.25K | Sep 2013 – Jul 2021 |
| Shovlin-Vehle G-4-233106 | Block "T" Petroleum, Inc. | Las Hermanitas (House Sand) | Duval | 1 | 68 | 4.51M | Jul 2007 – Apr 2026 |
| Weatherby-Weatherby GU G-4-180574 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 36 | 6.78M | Dec 2000 – Oct 2012 |
| Hubberd-Frost Nat'l Bank G/U G-4-153324 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 29 | 5.91M | Feb 1995 – Apr 2026 |
| Weatherby, L.C. Gas Unit G-4-125661 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 21 | 25.3M | Jan 1993 – Apr 2026 |
| Oliveira O-4-10917 | Block "T" Petroleum, Inc. | San Diego SW (Yegua 6490) | Duval | 1 | 17 | 5.31K | Jan 1993 – Oct 1993 |
| Hubberd,a.r. G.U. G-4-67945 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 2 | 7.62M | Jan 1993 – May 2017 |
| Shovlin Vehle G-4-247036 | Block "T" Petroleum, Inc. | Las Hermanitas (House Sand) | Duval | 1 | 2 | 501K | Nov 2008 – Dec 2020 |
| Muzza, G. P. G-4-249324 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 1 | 11.2M | Feb 2009 – Aug 2021 |
| G. G. Hinojosa G-4-184344 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 1 | 9.68M | Jul 2001 – Apr 2026 |
| DCB Doss O-11-66917 | Block "T" Petroleum, Inc. | Seminole, East (San Andres) | Gaines | 1 | 0 | 0 | — |
| Urban, Lillie et Al G-2-114357 | Block "T" Petroleum, Inc. | Pridham Lake, West (2350) | Victoria | 1 | 0 | 30.1K | Jan 1993 – Feb 1995 |
| Urban, Lillie et Al G-2-136821 | Block "T" Petroleum, Inc. | Pridham Lake, West (1300) | Victoria | 1 | 0 | 0 | — |
| Weatherby-Wernecke Gas Unit G-4-74899 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 8.26M | Jan 1993 – Jul 2025 |
| Weatherby-Wernecke Gas Unit G-4-81828 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 2.59M | Jan 1993 – Mar 2005 |
| Hubberd-Frost Nat'l Bank G.U. G-4-94044 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 6.17M | Jan 1993 – Apr 2026 |
| Muzza, G. P. G-4-117914 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 2.93M | Jan 1993 – Mar 1996 |
| Zachry, H.B. Co. G-4-118365 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 9.03M | Jan 1993 – Apr 2026 |
| Hinojosa, G. G. G-4-119105 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 19.9M | Jan 1993 – Apr 2026 |
| Hubberd - Frost Nat'l Bank G.U. G-4-127594 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 8.97M | Jan 1993 – Apr 2026 |
| Muzza, G. P. G-4-133176 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 23.1M | Jan 1993 – Jul 2020 |
| Weatherby-Weatherby Gas Unit G-4-137188 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 13.9M | Jan 1993 – Jul 2021 |
| Zachry, H. B. Co. G-4-139140 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 3.97M | Dec 1994 – Apr 2020 |
| Zachry, H. B. Company G-4-149444 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 30.7M | Dec 1993 – Jan 2009 |
| Hinojosa, G. G. G-4-158365 | Block "T" Petroleum, Inc. | Fandango (Wilcox Q) | Zapata | 1 | 0 | 1.33M | Jan 1996 – Apr 2026 |
| Kilgore-Wernecke Gas Unit G-4-167253 | Block "T" Petroleum, Inc. | Rosita, E. (Wilcox Cons.) | Duval | 1 | 0 | 17.5M | Dec 1997 – Mar 2014 |
| Muzza, G. P. G-4-181139 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 25.6M | Jan 2001 – Oct 2023 |
| Trevino, A. G-4-184483 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 1.06M | Jul 2001 – Apr 2026 |
| L. C. Weatherby East Gas Unit G-4-185835 | Block "T" Petroleum, Inc. | Rosita, E. (Wilcox Cons.) | Duval | 1 | 0 | 2.29M | Oct 2001 – Apr 2026 |
| Weatherby-Weatherby GU G-4-188051 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 4M | Feb 2002 – Apr 2026 |
| Weatherby-Weatherby GU G-4-190030 | Block "T" Petroleum, Inc. | Rosita, NW (Wilcox Cons.) | Duval | 1 | 0 | 826K | Jul 2002 – Apr 2026 |
| Zachry, H. B. Company G-4-190220 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 10.1M | Jun 2002 – Apr 2026 |
| Leyendecker, G. L. G-4-191584 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 2.1M | Oct 2002 – Nov 2023 |
| Zachry, H. B. Company G-4-196875 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 1.71M | Aug 2003 – Apr 2026 |
| Zachry, H. B. Company G-4-221718 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 8.8M | Jul 2006 – Apr 2026 |
| Dilworth G-4-234026 | Block "T" Petroleum, Inc. | Las Hermanitas (House Sand) | Duval | 1 | 0 | 4.87M | Nov 2007 – Apr 2026 |
| Muzza, G. P. G-4-242270 | Block "T" Petroleum, Inc. | Fandango (Wilcox Q) | Zapata | 1 | 0 | 279K | May 2008 – Apr 2026 |
| Leyendecker, G. L. G-4-245903 | Block "T" Petroleum, Inc. | Fandango (Wilcox Q) | Zapata | 1 | 0 | 113K | Jun 2008 – Apr 2026 |
| Leyendecker, G. L. G-4-248291 | Block "T" Petroleum, Inc. | Fandango (Wilcox Consolidated) | Zapata | 1 | 0 | 434K | Feb 2009 – Apr 2026 |
| Cowden, Emma, Tract -A- G-10-38841 | Block "T" Petroleum, Inc. | Emma (Charged Sand) | Andrews | 1 | 0 | 0 | — |
| Weatherby, L. C. O-4-9021 | Block "T" Petroleum, Inc. | Rosita | Duval | 1 | 0 | 0 | — |
| Cowden, W. F. O-10-1285 | Block "T" Petroleum, Inc. | Emma (Devonian) | Andrews | 2 | 0 | 0 | — |
| Cowden O-10-1289 | Block "T" Petroleum, Inc. | Emma (Ellenburger) | Andrews | 3 | 0 | 0 | — |
| Lampley, P. F. G-2-62887 | Block "T" Petroleum, Inc. | Hope, North (2880 Frio) | Lavaca | 1 | 0 | 449 | Jan 1993 – Jan 1993 |