| Scanio/Shelton G-2-241967 | High Plains Gas Systems, Inc. only | Mission River (8300 Vksbg) | Refugio | 1 | 30.2K | 611K | Aug 2008 – Dec 2014 |
| Scanio/Shelton G-2-212390 | Acock/Anaqua Operating Co., LP only | Mission River | Refugio | 1 | 20.4K | 196K | Apr 2005 – Apr 2015 |
| Scanio Shelton G-2-252998 | Paloma Operating, LLC only | Mission River (6100) | Refugio | 1 | 18.7K | 57.8K | May 2009 – Jun 2023 |
| Roche G-2-175282 | Wiser Oil Company, The only | Cactus (Frio Massive) | Refugio | 1 | 18.2K | 319K | Jun 1999 – Jun 2001 |
| Scanio / Shelton G-2-223050 | High Plains Gas Systems, Inc. only | Mission River (8300 Vksbg) | Refugio | 1 | 13.7K | 874K | Mar 2006 – Nov 2010 |
| Roche G-2-258523 | Salida Exploration, LLC only | Cactus (Frio Massive) | Refugio | 1 | 10.6K | 631K | May 2010 – Nov 2015 |
| Scanio/Shelton G-2-234544 | High Plains Gas Systems, Inc. only | Mission River (8400) | Refugio | 1 | 7.32K | 268K | Jan 2008 – Nov 2010 |
| Scanio/Shelton G-2-221611 | High Plains Gas Systems, Inc. only | Mission River (8400) | Refugio | 1 | 6.3K | 210K | Aug 2006 – Feb 2008 |
| Scanio-Shelton G-2-205677 | Acock/Anaqua Operating Co., LP only | Mission River (6300) | Refugio | 1 | 6.07K | 245K | Nov 2004 – Feb 2015 |
| Scanio/Shelton G-2-243787 | High Plains Gas Systems, Inc. only | Mission River (7200) | Refugio | 1 | 4.33K | 65.2K | Jun 2008 – Jun 2015 |
| Martin O'Connor-E- G-2-225443 | T-C Oil Company, LLC only | Tivoli (Greta Second) | Refugio | 1 | 4.14K | 661K | Jan 2007 – Nov 2011 |
| Scanio/Shelton G-2-205433 | High Plains Gas Systems, Inc. only | Mission River (6300) | Refugio | 1 | 3.91K | 135K | Aug 2004 – Oct 2006 |
| Scanio/Shelton G-2-250577 | Paloma Operating, LLC only | Mission River (8400) | Refugio | 1 | 3.82K | 72.5K | Aug 2008 – Feb 2020 |
| Scanio/Shelton G-2-207036 | High Plains Gas Systems, Inc. only | Mission River (6200) | Refugio | 1 | 2.5K | 136K | Jun 2004 – Dec 2008 |
| Scanio/Shelton G-2-208522 | Paloma Operating, LLC only | Mission River (5800) | Refugio | 1 | 2.29K | 65.9K | Jul 2004 – Mar 2020 |
| Scanio/Shelton G-2-220643 | Mantle Oil & Gas, LLC only | Mission River (6400) | Refugio | 1 | 2.13K | 17.8K | Sep 2006 – Apr 2009 |
| Trevino G-2-177961 | Mission River Systems, Inc. only | Refugio Old (5300) | Refugio | 1 | 2.1K | 379K | Jun 1999 – Apr 2010 |
| Roche G-2-183821 | Wiser Oil Company, The only | Cactus (Frio Massive) | Refugio | 1 | 1.59K | 135K | Feb 2000 – Jan 2001 |
| Scanio Shelton G-2-230611 | Acock/Anaqua Operating Co., LP only | Mission River (6400) | Refugio | 1 | 1.38K | 121K | Dec 2006 – Mar 2008 |
| O'Connor, Joe -A- G-2-255324 | T - C Oil Company only | River Pasture (5700) | Refugio | 1 | 926 | 178K | Feb 2010 – Mar 2011 |
| Roche G-2-182263 | Wiser Oil Company, The only | Cranell, W. (Frio Massive) | Refugio | 1 | 833 | 236K | Feb 2000 – Feb 2001 |
| Scanio/Shelton G-2-226852 | High Plains Gas Systems, Inc. only | Mission River (5800) | Refugio | 1 | 780 | 195K | Dec 2006 – Nov 2009 |
| Scanio/Shelton G-2-205432 | High Plains Gas Systems, Inc. only | Mission River (6300) | Refugio | 1 | 674 | 75.7K | Aug 2004 – Jun 2009 |
| Shelton, F. B. G-2-162263 | Lundberg Operating Corporation only | Mission River (5300) | Refugio | 1 | 639 | 77.7K | Feb 1997 – Mar 1998 |
| Scanio Shelton G-2-222184 | Paloma Operating, LLC only | Mission River (6400) | Refugio | 1 | 593 | 91.9K | Mar 2006 – Feb 2011 |
| Scanio Shelton G-2-224805 | Acock/Anaqua Operating Co., LP only | Mission River (6200) | Refugio | 1 | 567 | 60.1K | Nov 2006 – Feb 2009 |
| Scanio/Shelton G-2-207859 | High Plains Gas Systems, Inc. only | Mission River (6400) | Refugio | 1 | 565 | 37.4K | Jul 2004 – Jul 2006 |
| Shelton, F. B. G-2-153891 | Lundberg Operating Corporation only | Mission River (5800) | Refugio | 1 | 543 | 118K | Dec 1994 – Jan 1997 |
| Scanio/Shelton G-2-234536 | High Plains Gas Systems, Inc. only | Mission River (4200) | Refugio | 1 | 404 | 2.02K | Jul 2006 – Mar 2008 |
| Martin O'Connor -M- G-2-280499 | T-C Oil Company, LLC only | Tivoli (Greta Second) | Refugio | 1 | 258 | 44.3K | Dec 2018 – Apr 2019 |
| Shelton, F. B. G-2-104870 | Lundberg Operating Corporation only | Mission River (6200) | Refugio | 1 | 247 | 62.3K | by Jan 1993 – Dec 1994 |
| Martin O'Connor-B- G-2-230738 | T - C Oil Company only | Lower River Pasture (8100) | Refugio | 1 | 223 | 6.2K | Aug 2007 – Nov 2007 |
| Scanio/ Shelton G-2-254386 | High Plains Gas Systems, Inc. only | Mission River (8200) | Refugio | 1 | 202 | 17K | Aug 2007 – Feb 2008 |
| Wood River Ranch 'B' G-2-286621 | Kebo Oil & Gas, Inc. only | Woodsboro (6200) | Refugio | 1 | 175 | 147K | Oct 2018 – Aug 2026 |
| Wood River Ranch "D" G-2-257147 | Kebo Oil & Gas, Inc. only | Woodsboro (Frio 6300) | Refugio | 1 | 80 | 155K | Jun 2010 – Dec 2017 |
| Martin O'Connor -H- G-2-233529 | T - C Oil Company only | River Pasture (5700) | Refugio | 1 | 43 | 38.7K | Oct 2007 – Feb 2008 |
| Shelton, J. Isabella -D- G-2-187985 | High Plains Gas Systems, Inc. only | Mission River (6100) | Refugio | 1 | 20 | 12.1K | Jul 2001 – Feb 2008 |
| Scanio/Shelton G-2-205816 | Acock/Anaqua Operating Co., LP only | Mission River (6000) | Refugio | 1 | 0 | 0 | — |
| Scanio Shelton G-2-224199 | Acock/Anaqua Operating Co., LP only | Mission River (6400) | Refugio | 1 | 0 | 0 | — |
| Scanio/Shelton G-2-201419 | Acock/Anaqua Operating Co., LP only | Mission River (6300) | Refugio | 1 | 0 | 566 | Jan 2004 – Jan 2004 |
| Scanio Shelton G-2-225073 | Acock/Anaqua Operating Co., LP only | Mission River (6400) | Refugio | 1 | 0 | 0 | — |
| Shelton, J. Isabella G-2-190357 | Paloma Operating, LLC only | Mission River (6000) | Refugio | 1 | 0 | 0 | — |
| St. TR #1 San Antonio River G-2-162252 | Texas Western Energy Corporation only | McFaddin (3200) | Refugio | 1 | 0 | 11K | Dec 1996 – Apr 1997 |
| Niemann, Emil G-2-127314 | Mission River Systems, Inc. only | Bonnie View (4250) | Refugio | 1 | 0 | 105K | Dec 1993 – Mar 2000 |
| O'Connor, Martin -B- G-2-233532 | T - C Oil Company only | Lower River Pasture (8300) | Refugio | 1 | 0 | 1.54K | Dec 2007 – Dec 2007 |
| Niemann, Emil G-2-127313 | Mission River Systems, Inc. only | Bonnie View (F-3950) | Refugio | 1 | 0 | 9.3K | by Jan 1993 – Nov 1993 |
| State Tract #6 G-2-99432 | Live Oak/Operations, Inc. only | Copano-Hamill (Frio N-3) | Refugio | 1 | 0 | 408 | by Jan 1993 – Jan 1993 |
| Scanio-Hawn G-2-235535 | High Plains Gas Systems, Inc. only | Mission River (8400) | Refugio | 1 | 0 | 0 | — |
| Shelton, J. Isabella G-2-59027 | Paloma Operating, LLC only | Mission River (5800) | Refugio | 1 | 0 | 210K | by Jan 1993 – Jun 2001 |
| River Ranch -C- G-2-241970 | T-C Oil Company, LLC only | Huff (2200) | Refugio | 1 | 0 | 144K | Nov 2008 – Jan 2012 |