| Shell Houston Oil Mineral Estate O-4-13786 | Palo Blanco | Brooks | 1 | 0 | 0 | Aug 2012 – Jul 2026 |
| Shell-Houston Oil Mineral Est. O-4-2047 | Palo Blanco (FB-S) | — | 1 | 119K | 24 | Jan 1993 – Apr 2020 |
| Gray, J. F. O-2-7400 | Oakville | Live Oak | 1 | 69K | 35 | Jan 1993 – Jul 2019 |
| Hasse O-1-7557 | Hasse (Buda) | Wilson | 3 | 42.8K | 3.36K | Jan 1993 – Sep 2011 |
| Reagan, L. F., -A- O-2-3065 | Oakville | — | 1 | 0 | 0 | Jan 1993 – Aug 2008 |
| Shell-Houston Oil Mineral Est. O-4-2041 | Palo Blanco | — | 1 | 0 | 0 | Jan 1993 – Feb 2008 |
| Palmeras O-1-10118 | Palmeras (Olmos) | Dimmit | 1 | 0 | 0 | Jan 1993 – Aug 2003 |
| Hammond, Ada E. -A- O-1-4148 | Hammond (San Miguel NO 4) | Zavala | 2 | 2.98K | 22 | Jan 1993 – Sep 2002 |
| Seeligson Unit 2 G-4-187375 | Premont-Murchison | Jim Wells | 1 | 0 | 0 | Jul 2001 – Jun 2002 |
| Seelingson, A. A. G-4-181919 | Premont (Murchison) | Jim Wells | 1 | 0 | 0 | Mar 2001 – Jun 2002 |
| Svoboda O-1-12328 | Marcelina Creek (Buda) | Wilson | 1 | 40.7K | 25 | Jan 1993 – Apr 2002 |
| Seeligson Unit #2 G-4-163665 | Premont (Bardo Sand) | Jim Wells | 1 | 0 | 24.7K | Mar 1997 – Jul 2001 |
| Seeligson, A.A. G-4-150280 | Premont, East (Zone 16-A) | Jim Wells | 1 | 0 | 138K | Jul 1994 – Mar 2001 |
| Southwest Texas Corp. G-4-116948 | Ben Santos (Cole, Middle) | Duval | 1 | 0 | 29.2K | Jan 1993 – Jun 1999 |
| McCraw, Arnold L. G-2-90346 | Sliva, Southwest (3300) | Live Oak | 1 | 0 | 32.9K | Jan 1993 – Apr 1999 |
| McEachern G-2-170058 | Sliva, Southwest (Stillwell) | Live Oak | 1 | 0 | 27 | Jan 1998 – Apr 1999 |
| Southwest Texas Corp. O-4-12110 | Longhorn, South | Duval | 1 | 34.9K | 198K | Jan 1993 – Jan 1999 |
| Dilworth, J. C. O-1-14048 | Dilworth Ranch (Mula) | McMullen | 1 | 20 | 25 | Dec 1995 – Mar 1998 |
| Seeligson Unit #2 O-4-10822 | Premont, East (Zone 18-B) | Jim Wells | 2 | 7.76K | 24 | Jan 1993 – Aug 1997 |
| Seeligson, A. A. O-4-11050 | Premont, East (Zone 19-C) | Jim Wells | 1 | 0 | 0 | Jan 1993 – Aug 1994 |
| Dilworth, J. C. G-1-139931 | Dilworth Ranch (5050) | McMullen | 1 | 0 | 0 | Jan 1993 – Mar 1994 |
| Ammann, Everett G-3-127516 | Nada (Catahoula C-2) | Colorado | 1 | 0 | 0 | Jan 1993 – Jun 1993 |