| Mc Allen, A. A. G-4-56380 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg R Cent) | Hidalgo | 1 | 0 | 0 | Jan 1993 – Jun 1998 |
| Beaurline, A. W. G-4-119440 | Shell Western E&P only | McAllen Ranch(vicksburg-U-V-,se) | Hidalgo | 1 | 0 | 14.9K | Jan 1993 – Jan 2002 |
| Mustang Island State Park TR 2 G-4-118857 | Lamay Corporation only | Shell Point (6A) | Nueces | 1 | 0 | 0 | Jan 1993 – Jun 2021 |
| McAllen, A. A. G-4-55456 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg S, S.) | Hidalgo | 1 | 0 | 88.2K | Jan 1993 – Dec 1996 |
| Parker, Dorothy S. G-3-156432 | Shell Western E&P Inc. only | Wildcat | Matagorda | 1 | 0 | 0 | Oct 1994 – Oct 1997 |
| Neuhaus, E. T. G-2-153526 | Shell Western E&P Inc. only | Provident City (Yegua 5770) | Lavaca | 1 | 0 | 155K | Jan 1995 – Nov 1997 |
| Mustang Is. St. PK Tract 2 G-4-118613 | Oldfield Acquisition LP only | Shell Point (18 Sand) | Nueces | 1 | 0 | 0 | Jan 1993 – Sep 1994 |
| McAllen, A. A. "A" G-4-117877 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg L) | Hidalgo | 1 | 0 | 481K | Jan 1993 – Aug 1994 |
| Chapman, J. O. G-4-55009 | Shell Western E&P Inc. only | Chapman Ranch (L-24) | — | 1 | 0 | 0 | Jan 1993 – Dec 1996 |
| Garza, A.M. G-4-117327 | Shell Western E&P Inc. only | Rincon, North (Frio P) | — | 1 | 0 | 0 | Jan 1993 – Apr 1993 |
| Slick, T. B. Estate G-4-117053 | Shell Western E&P only | Hinde (Vicksburg Consolidated) | Starr | 1 | 0 | 76.1K | Jan 1993 – Dec 2006 |
| McAllen, A. A. G-4-54906 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 0 | 65.7K | Jan 1993 – Mar 2011 |
| Shellhammer G-3-129828 | Torch Operating Company only | Devil (Fault Blk. B,u.discorbis) | Jefferson | 1 | 0 | 18.4K | Jan 1993 – Nov 1994 |
| Santa FE Ranch G-4-116976 | Shell Western E&P Inc. only | Santa FE, East (Massive 1ST 1) | Brooks | 1 | 0 | 0 | Jan 1993 – Nov 1997 |
| Santa FE Ranch G-4-116514 | Shell Western E&P only | Santa FE, East (Massive 1ST 2) | Brooks | 1 | 0 | 0 | Jan 1993 – Sep 2011 |
| McAllen, A. A. G-4-54803 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 0 | 712K | Jan 1993 – Feb 2006 |
| Leyendecker, G.L. G-4-116472 | Shell Western E&P only | Fandango (Wilcox, Upper T2-T3) | Zapata | 1 | 0 | 300K | Jan 1993 – Nov 2002 |
| Chapman, J.O. G-4-169598 | Shell Western E&P Inc. only | Chapman Ranch (C-19) | Nueces | 1 | 0 | 0 | May 1997 – Aug 1998 |
| Cook G-4-115440 | Shell Western E&P only | McAllen (Elkins 6300) | Hidalgo | 1 | 0 | 1.37M | Jan 1993 – Apr 2007 |
| McAllen, A. A. G-4-53154 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg T, SE.) | Hidalgo | 1 | 0 | 0 | Jan 1993 – Jul 1997 |
| Shellhammer G-3-107648 | Torch Operating Company only | Devil (Fault Block B) | Jefferson | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Shelly Griffith G-2-137843 | Legacy Exploration, Inc. only | Papalote, W. (Griffith Ranch) | Bee | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Shelly G-2-3938 | Omelveny, J. M., Prod. Co. only | Refugio Old | — | 1 | 0 | 0 | Jan 1993 – Dec 2016 |
| Pharr Fieldwide Unit G-4-169612 | Shell Western E&P only | Pharr (Reichert) | Hidalgo | 1 | 0 | 5.99M | May 1998 – Mar 2008 |
| Santa FE Ranch G-4-169996 | Shell Western E&P only | Santa FE, East (Zone 3) | Brooks | 1 | 0 | 0 | May 1998 – Feb 2004 |
| Santa FE Ranch G-4-170090 | Shell Western E&P Inc. only | Santa FE, South (2) | Brooks | 1 | 0 | 4.77K | Jun 1998 – Dec 1999 |
| T.B. Slick Estate G-4-170215 | Shell Western E&P only | El Ebanito (Vicksburg 11) | Starr | 1 | 0 | 263K | Sep 1997 – Dec 2006 |
| McAllen Fieldwide Unit G-4-171030 | Shell Western E&P only | McAllen (Hansen) | Hidalgo | 1 | 0 | 127K | Jan 1998 – Oct 2006 |
| McAllen Fieldwide Unit G-4-171727 | Shell Western E&P only | McAllen (Hansen) | Hidalgo | 1 | 0 | 155K | May 1998 – May 2007 |
| Palmer State 348 G-4-172385 | Brigham Oil & Gas, L.P. only | Hall-SHELLY(NO.2 Sand) | Brooks | 1 | 0 | 106K | Dec 1998 – May 2002 |
| Santa FE Ranch G-4-172388 | Shell Western E&P Inc. only | Santa FE, East (Zone 3) | Brooks | 1 | 0 | 11.8K | Aug 1998 – Apr 1999 |
| McAllen Fieldwide Unit G-4-172400 | Shell Western E&P only | McAllen, West (Biedenharn, Up.) | Hidalgo | 1 | 0 | 581K | Feb 1999 – Feb 2011 |
| Woods, Christian G-4-172593 | Shell Western E&P only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 0 | 723K | Mar 1999 – Oct 2000 |
| State Slick D G-4-172862 | Shell Western E&P only | El Ebanito (Vicksburg 11) | Starr | 1 | 0 | 203K | Jan 1999 – Dec 2006 |
| McAllen Fieldwide Unit G-4-172983 | Shell Western E&P only | McAllen (Consolidated FB-B) | Hidalgo | 1 | 0 | 19.6M | Sep 1998 – Jun 2010 |
| McAllen, A. A. G-4-173014 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg L, R-1) | Hidalgo | 1 | 0 | 0 | Mar 1999 – Mar 1999 |
| State of Texas Gas Unit #1 G-4-173496 | Shell Western E&P only | Borosa, S. (Vicksburg 8850) | Starr | 1 | 0 | 325K | Feb 1999 – Dec 2006 |
| Woods Christian G-4-173865 | Shell Western E&P only | McAllen Ranch (Vicksburg R-3) | Hidalgo | 1 | 0 | 0 | Dec 1998 – Mar 2002 |
| Slick, T. B. Estate G-4-173913 | Shell Western E&P only | Hinde (Vicksburg Consolidated) | Starr | 1 | 0 | 79.7K | Feb 1999 – Dec 2006 |
| Shell-Santa FE Ranch 1 G-4-174430 | CB Energy, LLC only | Santa FE (E-32) | Brooks | 1 | 0 | 276K | Aug 1999 – Aug 2006 |
| Wood Christian G-4-174531 | Shell Western E&P only | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 0 | 544K | Sep 1999 – Aug 2002 |
| Shell-Santa FE Ranch G-4-174855 | CB Energy, LLC only | Santa FE (3200) | Brooks | 1 | 0 | 154K | Aug 1999 – Aug 2006 |
| Shell-Santa FE Ranch G-4-175267 | CB Energy, LLC only | Santa FE (3120) | Brooks | 1 | 0 | 209K | Aug 1999 – Aug 2006 |
| Bentsen Bros. "B" G-4-175496 | Shell Western E&P only | La Copita (Frio -E- 5300) | Starr | 1 | 0 | 31.7K | Dec 1999 – Apr 2000 |
| Shell Santa FE Ranch 3 G-4-175505 | CB Energy, LLC only | Santa FE (2850) | Brooks | 1 | 0 | 54.8K | Aug 1999 – Feb 2001 |
| Shell-Santa FE Ranch 6 G-4-176008 | CB Energy, LLC only | Santa FE, East (7200) | Brooks | 1 | 0 | 30.9K | Dec 1999 – Jun 2000 |
| Woods Christian G-4-176198 | Shell Western E&P only | McAllen Ranch (Vicksburg R-3) | Hidalgo | 1 | 0 | 14.7K | Dec 1998 – Jun 2000 |
| Garza, A. M.- State G-4-176427 | Shell Western E&P only | Rincon, N. (Vicksburg 6000) | Starr | 1 | 0 | 118K | Feb 2000 – Jul 2003 |
| Shell-Santa FE Ranch "7" G-4-176574 | CB Energy, LLC only | Santa FE (2870) | Brooks | 1 | 0 | 22.9K | Jan 2000 – Jul 2000 |
| Beaurline, A. W. G-4-168937 | Shell Western E&P only | McAllen Ranch (Vicksburg S, E.) | Hidalgo | 1 | 0 | 263K | Jun 1998 – Dec 2009 |