| Comanche 87 G-1-248916 | Shell Western E&P only | Wildcat | Maverick | 1 | 0 | 0 | Jun 2007 – Jul 2012 |
| Shell Chittim G-1-260007 | Blackbrush O & G, LLC only | Wildcat | Maverick | 1 | 0 | 213 | Jul 2010 – Sep 2016 |
| Shell Shock Unit G-1-298801 | Verdun Oil & Gas LLC only | Eagleville (Eagle Ford-1) | McMullen | 1 | 0 | 898K | Nov 2023 – Jul 2026 |
| Shell Shock Unit G-1-298802 | Verdun Oil & Gas LLC only | Eagleville (Eagle Ford-1) | McMullen | 1 | 0 | 629K | Nov 2023 – Jul 2026 |
| Shelly, T. P. G-2-3914 | Wyrick & Hughes only | Refugio Heard (4600) | — | 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 |
| Ryals, Shelly G-2-3947 | Wyrick & Hughes only | Refugio Old (2000) | — | 1 | 0 | 0 | Jan 1993 – Dec 2016 |
| Ryals, Shelly G-2-3953 | Wyrick & Hughes only | Refugio Old (3400) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Hultquist, M. G-2-30789 | Shell Western E&P Inc. only | Ganado (Marg. B) | — | 1 | 0 | 0 | Jan 1993 – May 1997 |
| M & O Gas Unit G-2-50662 | Shell Western E&P Inc. only | Ganado (3675) | — | 1 | 0 | 0 | Jan 1993 – May 1997 |
| Drushell, S. G. -a- O/A G-2-84313 | P&B Petroleum LLC only | Cordele (M-1U) | — | 1 | 0 | 360 | Jan 1993 – Jul 2026 |
| Ryals, Shelly G-2-135011 | Laquey, E. C. only | Refugio Heard (Area) | — | 1 | 0 | 0 | Jan 1993 – May 1993 |
| Shelly Griffith G-2-137843 | Legacy Exploration, Inc. only | Papalote, W. (Griffith Ranch) | Bee | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Neuhaus, E. T. G-2-153526 | Shell Western E&P Inc. only | Provident City (Yegua 5770) | Lavaca | 1 | 0 | 155K | Jan 1995 – Nov 1997 |
| Mansker-Shell Unit G-2-183334 | Hughes, Dan A. Company only | Causey (7750) | Bee | 1 | 0 | 611K | Jan 2001 – Nov 2005 |
| Mansker-Shell Unit G-2-183339 | Hughes, Dan A. Company only | Causey (7870) | Bee | 1 | 0 | 1.46M | Jan 2001 – Nov 2005 |
| Schaefer G-2-222952 | Big Shell Oil & Gas, Inc. only | Cottonwood Creek, S. (Yegua 4500 | DE Witt | 1 | 0 | 1.35K | Jul 2006 – Feb 2007 |
| Shell G-2-269099 | Excellong, Inc. only | Tulsita-Wilcox (7490) | Bee | 1 | 0 | 294 | Mar 2012 – Dec 2013 |
| Shelly Unit G-2-281963 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-2) | Lavaca | 1 | 0 | 407K | Jul 2014 – Jul 2026 |
| Marcia-Shelly (SA) Unit 2 G-2-296445 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-2) | Lavaca | 1 | 0 | 1.49M | Jan 2019 – Jul 2026 |
| Marcia-Shelly (SA) Unit 1 G-2-297714 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-2) | Lavaca | 1 | 0 | 1.22M | Jan 2019 – Jul 2026 |
| Shell Point Unit G-3-60674 | Bridge Oil Company, L. P. only | Rattlesnake Mound, W. (Schenck) | — | 1 | 0 | 0 | Jan 1993 – Jan 1993 |
| Poo&g-Shell F A Knoche GU #1 G-3-69041 | Cactus Energy Corporation only | Rock Island, W. (Wilcox 9900) | Colorado | 1 | 0 | 0 | Jan 1993 – May 2007 |
| Shelly Branch Unit G-3-98992 | Exxon Corp. only | Giddings (Austin Chalk, Gas) | Lee | 1 | 0 | 24.8K | Jan 1993 – Mar 1994 |
| Shelly Branch Unit No. 2 G-3-100625 | Exxon Corp. only | Giddings (Austin Chalk, Gas) | Lee | 1 | 0 | 0 | Jan 1993 – Sep 1996 |
| S.T. 446L SW, Shell S.T. 77323 G-3-104741 | Capco Offshore of Texas, Inc. only | Brazos Block 446L SW-4 (M15C) | Brazos-LB | 1 | 0 | 0 | Jan 1993 – Jul 2017 |
| Shellhammer G-3-107648 | Torch Operating Company only | Devil (Fault Block B) | Jefferson | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Shellhammer G-3-129828 | Torch Operating Company only | Devil (Fault Blk. B,u.discorbis) | Jefferson | 1 | 0 | 18.4K | Jan 1993 – Nov 1994 |
| Parker, Dorothy S. G-3-156432 | Shell Western E&P Inc. only | Wildcat | Matagorda | 1 | 0 | 0 | Oct 1994 – Oct 1997 |
| State Lease M-96872 G-3-165043 | Shell Offshore Inc. only | Putski (Marg. A) | Galveston-LB | 1 | 0 | 487K | Nov 1996 – Nov 1999 |
| High Island State Tract 10-L G-3-226399 | Shell Offshore Inc. only | Wildcat | High IS-LB | 1 | 0 | 0 | Jun 2005 – Jan 2008 |
| Chapman, J. O. G-4-9814 | Shell Western E&P Inc. only | Chapman Ranch (L-20) | — | 1 | 0 | 0 | Jan 1993 – Nov 1996 |
| Bentsen Bros. -B- G-4-11362 | Shell Western E&P Inc. only | LA Copita (Vicksburg Lower) | Starr | 1 | 0 | 0 | Jan 1993 – Jan 1995 |
| Bentsen Bros. -B- G-4-11363 | Shell Western E&P only | LA Copita (Vicksburg Lower) | Starr | 1 | 0 | 148K | Jan 1993 – Feb 2006 |
| Christian, Woods G-4-11968 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg P, Q) | Hidalgo | 1 | 0 | 217K | Jan 1993 – Nov 1998 |
| Christian, Woods G-4-11970 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg Q) | Hidalgo | 1 | 0 | 1.65M | Jan 1993 – Nov 1997 |
| Garza, A. M.,-State G-4-12989 | Shell Western E&P Inc. only | Rincon, N. (Vicksburg Cons.) | — | 1 | 0 | 0 | Jan 1993 – Oct 1999 |
| Garza, A. M., State G-4-13023 | Shell Western E&P only | Rincon, N. (Vicksburg Cons.) | — | 1 | 0 | 0 | Jan 1993 – Mar 2008 |
| McAllen, A. A. G-4-14054 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg R) | — | 1 | 0 | 11.2K | Jan 1993 – Mar 1996 |
| Santa FE Ranch G-4-14063 | Shell Western E&P Inc. only | Santa FE, East (Massive 1ST 1E.) | Brooks | 1 | 0 | 61.6K | Jan 1993 – Jan 1999 |
| Santa FE Ranch G-4-14065 | Shell Western E&P Inc. only | Santa FE, East (Massive 2ND) | Brooks | 1 | 0 | 19.1K | Jan 1993 – Mar 1998 |
| Esparza, Pablo, et al Unit G-4-31290 | Shell Western E&P only | McAllen, South (J-8) | — | 1 | 0 | 2.38M | Jan 1993 – Oct 2010 |
| Santa FE Ranch G-4-33207 | Shell Western E&P Inc. only | Santa FE, East (Massive 1ST 5) | Brooks | 1 | 0 | 118K | Jan 1993 – Mar 1998 |
| McAllen, A. A. G-4-34507 | Shell Western E&P Inc. only | McAllen Ranch (Vicksburg S) | — | 1 | 0 | 219K | Jan 1993 – Jun 1997 |
| Santa FE Ranch G-4-36231 | Shell Western E&P only | Santa FE, East (Massive 1ST 5) | Brooks | 1 | 0 | 0 | Jan 1993 – Feb 2004 |
| McAllen, A. A. G-4-37083 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | — | 1 | 0 | 3.2M | Jan 1993 – Jan 2006 |
| Chapman, J. O. G-4-38433 | Shell Western E&P Inc. only | Mobil-David, W. (Howell Hight) | Nueces | 1 | 0 | 0 | Jan 1993 – Jan 1997 |
| McAllen Fieldwide Unit G-4-41185 | Shell Western E&P only | McAllen (Marks FB C) | — | 1 | 0 | 1.65M | Jan 1993 – Nov 2006 |
| Garza, A. M., -State- G-4-42817 | Shell Western E&P Inc. only | Rincon, N. (Vicksburg Cons.) | — | 1 | 0 | 194K | Jan 1993 – Oct 1999 |
| Blue Star-Liberty G-1-237092 | Shell Western E&P only | Wildcat | Maverick | 1 | 0 | 17.5K | Jul 2006 – Apr 2017 |