| Barber O-2-8168 | Tiza Energy, Inc. only | Blanco Creek (5680) | Refugio | 1 | 7.31K | 11.5K | Apr 1996 – Jul 2004 |
| Heard, Clement O-2-1540 | Hilcorp Energy Company only | Tom Oconnor | Refugio | 3 | 7.31K | 64.2K | Jan 1993 – Apr 2001 |
| Heard, Ira "A" O-2-8496 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 7.31K | 211K | Dec 1999 – Feb 2006 |
| Shelton O-2-10228 | Kebo Oil & Gas, Inc. only | Lake Pasture (FT-730) | Refugio | 1 | 7.3K | 8.02K | Mar 2012 – Sep 2015 |
| O'Connor, Thomas "B" O-2-7897 | Quintana Pet. Corp. only | Mary Ellen O'Connor (8300) | Refugio | 1 | 7.24K | 135K | Aug 1993 – May 1995 |
| O'Connor -H- O-2-13186 | T-C Oil Company, LLC only | Anaqua (3000) | Refugio | 1 | 7.23K | 2.34K | Dec 2025 – Apr 2026 |
| Roche, K. D. A G-2-148721 | H & D Operating Company only | Roche (-B-) | Refugio | 1 | 7.2K | 855K | Mar 1994 – Apr 1996 |
| Lambert, M. F. G-2-84415 | Hilcorp Energy Company only | Tom Oconnor | Refugio | 1 | 7.11K | 577K | Jan 1993 – May 2010 |
| Heard, Clement O-2-8436 | Hilcorp Energy Company only | Tom Oconnor (5625 Sand) | Refugio | 1 | 7.1K | 13.8K | Mar 1999 – Dec 2002 |
| Lambert, M F. O-2-11730 | Hilcorp Energy Company only | Tom Oconnor (5425 Sand) | Refugio | 1 | 7.02K | 457 | Jan 2019 – Apr 2025 |
| Williams, Maude Etal -B- O-2-5525 | Hilcorp Energy Company only | Tom Oconnor (5625 Sand) | Refugio | 6 | 6.9K | 8.95K | May 1993 – Nov 1997 |
| Fagan C O-2-10642 | Great Bay Operations, LLC only | McFaddin (5600) | Refugio | 1 | 6.74K | 14.1K | Jun 2013 – Jun 2014 |
| Roche, K. D. -D- O-2-3470 | H & D Operating Company only | Roche (-C-) | Refugio | 1 | 6.72K | 59.9K | Jan 1993 – Apr 2000 |
| Williams, Maude et al "A" O-2-8655 | Hilcorp Energy Company only | Lake Pasture (FT-566) | Refugio | 3 | 6.67K | 54.2K | Jun 2001 – Jun 2021 |
| O'Connor, Joe -A- G-2-229665 | T - C Oil Company only | Artesian Creek (6200) | Refugio | 1 | 6.66K | 724K | Jun 2007 – Jan 2010 |
| Obrien, J. M., -D- O-2-3982 | Exxon Corp. only | Greta (4400) | Refugio | 1 | 6.59K | 20.5K | Aug 1993 – Jul 1996 |
| Williams, Maude et al "A" G-2-214334 | Hilcorp Energy Company only | Lake Pasture (Vicksburg 8100) | Refugio | 1 | 6.45K | 1.2M | Aug 2005 – Jan 2021 |
| 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 |
| Reilly, Annie et Vir G-2-180969 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 6.4K | 1.26M | Dec 2000 – Mar 2001 |
| Braman -G- G-2-293128 | T-C Oil Company, LLC only | Braman (8700) | Refugio | 1 | 6.34K | 541K | Jul 2022 – Nov 2025 |
| Schirmer-Buck Unit G-2-285628 | Bent Wing Energy, LLC only | Bonnie View (4700) | Refugio | 1 | 6.32K | 86.3K | Nov 2018 – Feb 2026 |
| Scanio/Shelton G-2-221611 | High Plains Gas Systems, Inc. only | Mission River (8400) | Refugio | 1 | 6.3K | 210K | Aug 2006 – Feb 2008 |
| Schirmer "C-120" O-2-8117 | Christopher Oil & Gas Inc only | Bonnie View (5600) | Refugio | 1 | 6.27K | 37K | Nov 1995 – Nov 1996 |
| Williams, Maude et al 'A' O-2-8521 | Quintana Pet. Corp. only | Tom O'Connor (5730, East) | Refugio | 11 | 6.26K | 13.4K | Mar 2000 – Aug 2000 |
| Rooke G-2-257553 | Coastal Plains Exploration, LLC only | Roche (5800) | Refugio | 1 | 6.23K | 58.8K | May 2010 – Jan 2011 |
| Welder 'C' O-2-11047 | Remora Operating, LLC only | Sharps Lake, N. (5040) | Refugio | 1 | 6.2K | 6.06K | Jun 2015 – May 2016 |
| Shelton O-2-9368 | Hilcorp Energy Company only | Hynes Ranch (6800) | Refugio | 2 | 6.19K | 59K | Jan 2010 – Jul 2016 |
| Oconnor, Mary Ellen O-2-5588 | Dolphin Petroleum, LP only | Mary Ellen Oconnor (8200) | Refugio | 1 | 6.16K | 79.7K | Jan 1994 – Jul 2016 |
| Heard, Fannie V. W. Mrs. O-2-8184 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 1 | 6.14K | 1.76K | Jul 1996 – Jun 1998 |
| Rooke, B. D. O-2-4252 | Laroco LLP only | La Rosa (6750) | Refugio | 4 | 6.1K | 27.3K | Jan 1993 – Dec 1994 |
| Wood, L. Est. G-2-174416 | Cummins & Walker Oil Co., Inc. only | Murphy L. (7000) | Refugio | 1 | 6.09K | 89.3K | Jun 1999 – Jan 2000 |
| Heard, Fannie V. W. Mrs. O-2-9217 | Hilcorp Energy Company only | Tom Oconnor (5450 Sand) | Refugio | 1 | 6.08K | 5.88K | Jun 2008 – Feb 2015 |
| Heard, Mrs. Fannie V.W. O-2-8055 | Quintana Pet. Corp. only | Tom O'Connor (5410) | Refugio | 1 | 6.08K | 8.14K | Mar 1995 – Aug 1998 |
| Scanio-Shelton G-2-205677 | Acock/Anaqua Operating Co., LP only | Mission River (6300) | Refugio | 1 | 6.07K | 245K | Nov 2004 – Feb 2015 |
| Welder-Terrell G-2-194134 | C & E Operating, Inc. only | Devil's Run (6600) | Refugio | 1 | 6.01K | 48.8K | Nov 2002 – Nov 2003 |
| Houghton, J. F. O-2-7430 | Hyquest Energy, Inc. only | Bonnie View (5400) | Refugio | 1 | 6.01K | 62.3K | Jun 2001 – Oct 2007 |
| O'Conner -N- O-2-7286 | T - C Oil Company only | Huff ( 506) | Refugio | 1 | 5.99K | 45.5K | Jan 1993 – Mar 1997 |
| Fox, W. J. -A- G-2-271692 | Hilcorp Energy Company only | Refugio-Fox (6600) | Refugio | 1 | 5.98K | 249K | Sep 2013 – Dec 2017 |
| Lambert Gas Unit G-2-255564 | Hilcorp Energy Company only | Tom O'Connor (South 7700) | Refugio | 1 | 5.94K | 381K | Sep 2009 – Jan 2010 |
| 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 |
| Lambert, M. F. G-2-178401 | Devon Energy Production Co, L.P. only | Tom Oconnor (7940) | Refugio | 1 | 5.87K | 35.1K | Apr 2000 – Jul 2000 |
| Schirmer O-2-8774 | Double Play Oil & Gas, Inc only | La Rosa (Consolidated, Oil) | Refugio | 1 | 5.85K | 0 | Feb 2002 – Feb 2009 |
| Rooke "B" O-2-8617 | Wofford, C. J. only | Refugio New (4780 Sd.) | Refugio | 1 | 5.84K | 42.3K | Apr 2001 – Dec 2006 |
| Rooke G-2-230255 | Republic Resources, LLC. only | Rooke (8100) | Refugio | 1 | 5.81K | 210K | Apr 2007 – Nov 2008 |
| JM Obrien "A" G-2-214405 | Greta Operating Company LLC only | Greta (6200, South) | Refugio | 1 | 5.78K | 229K | Jun 2005 – Aug 2012 |
| Wood G-2-172636 | C & E Operating, Inc. only | Peponi Ranch (Frio 4800) | Refugio | 1 | 5.73K | 1.73M | Feb 1999 – Mar 2011 |
| W. J. Fox "A" O-2-9644 | Hilcorp Energy Company only | Hynes Ranch (6800) | Refugio | 3 | 5.72K | 43.7K | Mar 2011 – Dec 2018 |
| J. M. O'Brien A G-2-298290 | Greta Operating Company LLC only | Greta (4850) | Refugio | 1 | 5.71K | 379K | Nov 2012 – Apr 2026 |
| Oconnor, Thomas, -A- O-2-2489 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 5 | 5.68K | 80.8K | Jan 1993 – Sep 1996 |