| Tom O'CONNOR(5600 Foot Sand)unit O-2-8950 | Hilcorp Energy Company only | Tom O'Connor (5600 Foot Sand) | Refugio | 59 | 1.13M | 357K | Mar 2005 – Apr 2026 |
| Obrien, J. M. O-2-4921 | South Texas Operating Company only | Greta, Deep (5660) | Refugio | 1 | 173K | 137K | Jan 1993 – Apr 2026 |
| Welder Ford O-4-13771 | Dallas Petroleum Group, LLC only | Taft, West (5600) | Refugio | 5 | 121K | 31.4K | Feb 2013 – Apr 2026 |
| O'Connor O-2-10331 | T-C Oil Company, LLC only | Huff (5600) | Refugio | 3 | 112K | 312K | Aug 2012 – Sep 2023 |
| Bauer, Mary Claire et Vir O-2-7849 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 5 | 111K | 353K | Jan 1993 – Aug 2010 |
| Heard, Clement O-2-8936 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 2 | 95.3K | 56.2K | Nov 2004 – Aug 2017 |
| Williams, Maude, Etal -A- O-2-2526 | Hilcorp Energy Company only | Lake Pasture (FT-560) | Refugio | 4 | 89.7K | 207K | Jan 1993 – Aug 2020 |
| Fagan O-2-6479 | Allegiant Resources, LLC only | McFaddin (5600) | Refugio | 2 | 86.7K | 11.8K | Jan 1993 – Oct 2007 |
| Welder Ford G-4-266216 | Dallas Petroleum Group, LLC only | Taft, West (5600) | Refugio | 1 | 85K | 128K | Apr 2012 – May 2017 |
| Wood, L. Est. O-2-8890 | Cummins & Walker Oil Co., Inc. only | Woodsboro (5600 Sand) | Refugio | 1 | 83.6K | 23K | Jun 2004 – Dec 2019 |
| Hynes O-2-6739 | Magnum Producing, LP only | Papalote, E. (6000) | Refugio | 3 | 83.2K | 43.9K | Jan 1993 – Jul 2006 |
| Miguelita Scanio G-2-244399 | Acock/Anaqua Operating Co., LP only | Refugio-Fox (6600) | Refugio | 1 | 72.3K | 175K | Oct 2008 – Jan 2019 |
| Miguelita Scanio O-2-10125 | Paloma Operating, LLC only | Tom Oconnor (6600) | Refugio | 1 | 64.3K | 60.7K | Dec 2011 – Jun 2023 |
| Oconnor O-2-1503 | T-C Oil Company, LLC only | T-C (5600) | Refugio | 19 | 52K | 203K | Jan 1993 – Jul 2008 |
| Marberry O-2-5972 | Allegiant Resources, LLC only | McFaddin (5600) | Refugio | 2 | 46.9K | 2.22K | Jan 1993 – Jan 2015 |
| Lambert, M. F. O-2-9191 | Hilcorp Energy Company only | Tom Oconnor (West 6600) | Refugio | 1 | 45.1K | 176K | Mar 2008 – Dec 2011 |
| Scanio/Shelton O-2-8976 | High Plains Gas Systems, Inc. only | Mission River (6000) | Refugio | 1 | 32.5K | 27.7K | Feb 2005 – Sep 2015 |
| Schirmer "C" O-2-8477 | Christopher Oil & Gas Inc only | Bonnie View (5600) | Refugio | 1 | 31.3K | 104K | Oct 1999 – Nov 2000 |
| Lambert, M. F. O-2-9125 | Hilcorp Energy Company only | Tom Oconnor (West 6600) | Refugio | 1 | 25.3K | 30.1K | Feb 2007 – Jul 2007 |
| Scanio, Miguelita G-2-207964 | Digital Operating Company LLC only | Refugio-Fox (6600) | Refugio | 1 | 23.6K | 253K | Nov 2004 – May 2020 |
| Annie Reilly, et Vir O-2-9958 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 1 | 22.2K | 8.3K | Nov 2011 – Jul 2015 |
| Roche (6000 Sand) Unit G-2-152225 | H & D Operating Company only | Roche (6000 Sand) | Refugio | 1 | 20.4K | 1.79M | Nov 1994 – Jan 2000 |
| Terrell Ranch "C" O-2-8188 | Wiser Oil Company, The only | Devil's Run (6600) | Refugio | 1 | 19.6K | 845 | Jul 1996 – May 1998 |
| Marberry O-2-3433 | Anderson Oil Ltd. only | McFaddin (5600) | Refugio | 1 | 19.1K | 16 | Jan 1993 – Feb 2006 |
| Roche (6000 Sand) Unit G-2-147914 | H & D Operating Company only | Roche (6000 Sand) | Refugio | 1 | 18.7K | 1.66M | Oct 1993 – Oct 1998 |
| Reilly, Annie et Vir O-2-4801 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 2 | 17.9K | 97.7K | Jan 1993 – Jun 2002 |
| Lambert, M. F. G-2-144497 | Devon Energy Production Co, L.P. only | Siene Bean (6960) | Refugio | 1 | 16.9K | 1.15M | Jan 1993 – Oct 1996 |
| Rooke, F. B. 4 G-2-175949 | C & E Operating, Inc. only | Woodsboro, West (Frio 6600) | Refugio | 1 | 12.8K | 243K | Nov 1999 – Jan 2005 |
| Fagan C O-2-10547 | Great Bay Operations, LLC only | McFaddin (5600 North) | Refugio | 1 | 12.4K | 20.9K | Jan 2013 – Jan 2014 |
| Willow Creek -C- O-2-10158 | T-C Oil Company, LLC only | Willow Creek (6600) | Refugio | 1 | 12.2K | 132K | Mar 2012 – May 2015 |
| O'Connor, Thomas "A" O-2-7838 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 1 | 11.6K | 16.4K | Jan 1993 – Oct 2003 |
| Reilly, Annie et Vir O-2-9148 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 2 | 11K | 34.8K | Sep 2007 – Mar 2012 |
| Clay Pasture -B- State Unit O-2-13103 | T-C Oil Company, LLC only | Anaqua (2960) | Refugio | 1 | 10.5K | 7.6K | May 2025 – Apr 2026 |
| Welder-Terrell O-2-8839 | C & E Operating, Inc. only | Devil's Run (6600) | Refugio | 1 | 9.6K | 0 | Dec 2003 – Oct 2006 |
| Miguelita Scanio G-2-269669 | Digital Operating Company LLC only | Refugio-Fox (6600) | Refugio | 1 | 9.15K | 255K | Nov 2012 – Mar 2018 |
| M. F. Lambert O-2-10362 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 8.92K | 54.5K | Sep 2012 – Mar 2015 |
| Shelton G-2-257928 | Kebo Oil & Gas, Inc. only | Lake Pasture (FT-660) | Refugio | 1 | 8.25K | 161K | Aug 2010 – Aug 2015 |
| W. J. Fox 'A' O-2-10431 | Hilcorp Energy Company only | Hynes Ranch (7160) | Refugio | 1 | 7.75K | 134K | Jan 2013 – Sep 2014 |
| Heard, Ira "A" O-2-8496 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 7.31K | 211K | Dec 1999 – Feb 2006 |
| Fagan C O-2-10642 | Great Bay Operations, LLC only | McFaddin (5600) | Refugio | 1 | 6.74K | 14.1K | Jun 2013 – Jun 2014 |
| Heard, Fannie V. W., Mrs. O-2-8884 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 6 | 6.42K | 2.14K | May 2004 – Jan 2015 |
| Ryals Estate -P- G-2-37001 | Eagleford Operating, Inc. only | Refugio Old (5600) | Refugio | 1 | 6.41K | 474K | Jan 1993 – Oct 2014 |
| Schirmer "C-120" O-2-8117 | Christopher Oil & Gas Inc only | Bonnie View (5600) | Refugio | 1 | 6.27K | 37K | Nov 1995 – Nov 1996 |
| Welder-Terrell G-2-194134 | C & E Operating, Inc. only | Devil's Run (6600) | Refugio | 1 | 6.01K | 48.8K | Nov 2002 – Nov 2003 |
| Fox, W. J. -A- G-2-271692 | Hilcorp Energy Company only | Refugio-Fox (6600) | Refugio | 1 | 5.98K | 249K | Sep 2013 – Dec 2017 |
| O'Connor, M.E. O-2-7871 | T-C Oil Company, LLC only | Woodsboro, South (6010) | Refugio | 1 | 5.89K | 3.13K | Apr 1993 – Apr 2017 |
| Thomas O'Connor O-2-11060 | Greta Operating Company LLC only | Greta, Deep (5600) | Refugio | 1 | 5.62K | 155K | Feb 2015 – Jan 2026 |
| Vidauri "A" G-2-219589 | Charro Operating, L.L.C. only | Vidauri Ranch (5560) | Refugio | 1 | 5.12K | 811K | Nov 2005 – Apr 2009 |
| Reily, Annie et Vir O-2-9020 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 4.67K | 9.88K | Jan 2006 – Dec 2006 |
| O'Connor, M. V. Estate "C" G-2-224771 | Charro Operating, L.L.C. only | Train Wreck (6000 Sd.) | Refugio | 1 | 4.6K | 635K | Nov 2007 – Jan 2016 |