| Scanio/Shelton G-2-208522 | Paloma Operating, LLC only | Mission River (5800) | Refugio | 1 | 2.29K | 65.9K | Jul 2004 – Mar 2020 |
| Nordan & Morris, Thos. Oconnor O-2-5530 | T - C Oil Company only | Tom Oconnor (5500 Sand) | Refugio | 1 | 2.27K | 3.29K | Jan 1993 – Jun 1998 |
| Shelton O-2-9338 | Hilcorp Energy Company only | Hynes Ranch (7160) | Refugio | 2 | 2.26K | 2.69K | Sep 2009 – Jan 2011 |
| Wood G-2-185230 | C & E Operating, Inc. only | Devils Run (6200) | Refugio | 1 | 2.26K | 102K | Jul 2001 – Jun 2002 |
| Wood G-2-183378 | C & E Operating, Inc. only | Devils Run (6200) | Refugio | 1 | 2.24K | 115K | Jul 2000 – Mar 2002 |
| Braman -F- G-2-291742 | T-C Oil Company, LLC only | Braman (8700) | Refugio | 1 | 2.21K | 64.4K | Nov 2021 – Jan 2022 |
| Wood, L. Est. G-2-182270 | Cummins & Walker Oil Co., Inc. only | Woodsboro (6600) | Refugio | 1 | 2.2K | 32K | Feb 2001 – Aug 2001 |
| Marberry B O-2-11233 | Allegiant Resources, LLC only | McFaddin (5600 North) | Refugio | 1 | 2.19K | 6.58K | Mar 2015 – Jun 2017 |
| Oconnor, Dennis, et al -L- O-2-3008 | T - C Oil Company only | Lake Pasture (FT-560) | Refugio | 1 | 2.19K | 16.9K | Jan 1993 – Aug 1994 |
| Thomson-Barrow Corp. C G-2-177142 | C & E Operating, Inc. only | Daniel O. Driscoll (Vksbg. 5900) | Refugio | 1 | 2.15K | 304K | Feb 2000 – Sep 2008 |
| Huff GU 1 G-2-128875 | Setex Oil and Gas Company only | McFaddin (4400) | Refugio | 1 | 2.14K | 228K | Jan 1993 – May 2004 |
| Scanio/Shelton G-2-220643 | Mantle Oil & Gas, LLC only | Mission River (6400) | Refugio | 1 | 2.13K | 17.8K | Sep 2006 – Apr 2009 |
| Barber Ranch G-2-184139 | Momentum Energy Corporation only | Blanco Creek (6600) | Refugio | 1 | 2.13K | 308K | May 2001 – Jan 2004 |
| Nordan,l. A.-Oconnor,thos.,est. O-2-2679 | Nordan & Company only | Tom Oconnor (5500 Sand) | Refugio | 1 | 2.11K | 13.2K | Jan 1993 – Aug 1994 |
| Trevino G-2-177961 | Mission River Systems, Inc. only | Refugio Old (5300) | Refugio | 1 | 2.1K | 379K | Jun 1999 – Apr 2010 |
| Williams, Maude, Etal -A- O-2-2889 | Hilcorp Energy Company only | Lake Pasture (FS-515) | Refugio | 8 | 2.06K | 4.02K | Dec 2006 – Sep 2008 |
| Schirmer, Henry G-2-193180 | Bent Wing Energy, LLC only | Bonnie View (5600) | Refugio | 1 | 2.06K | 451K | Jan 2003 – Apr 2020 |
| Fox, W. J. O-2-9180 | Hilcorp Energy Company only | Refugio-Fox (6550) | Refugio | 1 | 2.06K | 11.2K | Feb 2008 – Apr 2011 |
| Duke Ranch -F- G-2-212605 | T-C Oil Company, LLC only | Tejas (Frio 4800) | Refugio | 1 | 2.02K | 1.55M | Jul 2005 – May 2008 |
| Heard, Ira -B- 6600' Sand Unit G-2-107067 | Quintana Pet. Corp. only | Tom Oconnor (6600) | Refugio | 1 | 2.01K | 313K | Jan 1993 – Sep 1997 |
| Braman -G- O-2-13182 | T-C Oil Company, LLC only | Braman (8300) | Refugio | 1 | 1.98K | 18.8K | Dec 2025 – Apr 2026 |
| Roche (6000 Sand) Unit G-2-161776 | H & D Operating Company only | Roche (6000 Sand) | Refugio | 1 | 1.98K | 284K | Jan 1997 – Aug 1999 |
| Kentucky-Fagan O-2-8515 | Anderson Oil Ltd. only | McFaddin (5500) | Refugio | 1 | 1.97K | 5.03K | Feb 2000 – May 2000 |
| O'Connor, Mary Ellen G-2-147980 | Emerald Oil & Gas LC only | Mary Ellen Oconnor (5500) | Refugio | 1 | 1.96K | 21.1K | Oct 1993 – Jan 1994 |
| Williams, Maude et al "A" O-2-9171 | Hilcorp Energy Company only | Lake Pasture (FT-572) | Refugio | 1 | 1.96K | 12.5K | Jun 2007 – Mar 2009 |
| Rooke, B. D. G-2-170076 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 1.94K | 208K | Jul 1998 – Apr 2000 |
| Mary Claire Bauer et Vir O-2-9460 | Hilcorp Energy Company only | Tom O'Connor (7100) | Refugio | 1 | 1.94K | 27.1K | Sep 2010 – Feb 2011 |
| Scanio, Miguelita O-2-9266 | Acock/Anaqua Operating Co., LP only | Tom O'Connor (7100) | Refugio | 1 | 1.94K | 42.8K | May 2008 – Sep 2008 |
| O'Connor, Dennis et al. "N" O-2-7974 | T - C Oil Company only | Huff (3000, FB-W) | Refugio | 1 | 1.89K | 4.27K | Jun 1994 – Jan 1995 |
| Roche Ranch Tract A O-2-6859 | Express Oil and Gas only | Roche Ranch (5480) | Refugio | 1 | 1.88K | 35 | Jan 1993 – Mar 1999 |
| Toland O-2-8023 | CTR Petroleum, Inc. only | La Rosa (Consolidated, Oil) | Refugio | 2 | 1.88K | 0 | Jan 1995 – Apr 1999 |
| Migeulita Scanio O-2-11783 | Digital Operating Company LLC only | Refugio New (6150 Sand) | Refugio | 1 | 1.86K | 8.53K | Jul 2019 – Sep 2021 |
| Jimmie C Morgan O-2-11300 | Yordes Energy, LLC only | Bonnie View (FQ- 9 Sand) | Refugio | 1 | 1.86K | 0 | Mar 2016 – Jun 2016 |
| Rooke, F. B. 4 G-2-177952 | C & E Operating, Inc. only | Roche (5800) | Refugio | 1 | 1.85K | 246K | Mar 2000 – Jun 2006 |
| Heard-State Unit #2 O-2-8683 | CTR Petroleum, Inc. only | Refugio, New (2450) | Refugio | 1 | 1.85K | 15.2K | Dec 2001 – Dec 2004 |
| Heard, Mrs. Fannie V. W. G-2-180966 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 1.84K | 513K | Dec 2000 – Feb 2001 |
| Williams, Maude et al -A- O-2-5871 | Quintana Pet. Corp. only | Lake Pasture (FS-545) | Refugio | 2 | 1.82K | 12K | Jan 1993 – Nov 1993 |
| Fox, C.P. G-2-151058 | Acock Engineering & Assoc., Inc. only | Refugio-Fox (3500) | Refugio | 1 | 1.8K | 249K | Aug 1994 – Jan 2002 |
| Bauer, Mary Claire et Vir O-2-7774 | Quintana Pet. Corp. only | Tom Oconnor (5425 Sand) | Refugio | 1 | 1.77K | 79.6K | Jan 1993 – Feb 1994 |
| Welder Heirs G-2-215180 | C & E Operating, Inc. only | Devils Run (Chamberlain 3A) | Refugio | 1 | 1.73K | 69.3K | Mar 2004 – Apr 2007 |
| Fox, W. J. "A" G-2-217699 | Hilcorp Energy Company only | Hynes Ranch (FE-95) | Refugio | 1 | 1.71K | 226K | Nov 2005 – Nov 2006 |
| Vidauri "F" G-2-244754 | Charro Operating, L.L.C. only | Phil Power (5550) | Refugio | 1 | 1.71K | 275K | Nov 2008 – Apr 2011 |
| Heard, Clement G-2-180998 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 1.69K | 672K | Dec 2000 – Feb 2001 |
| M. F. Lambert G-2-255911 | Hilcorp Energy Company only | Tom O'Connor (8000, West) | Refugio | 1 | 1.68K | 12.5K | Feb 2010 – Jan 2011 |
| Rooke, F. B. 9 G-2-182651 | C & E Operating, Inc. only | Devils Run (6200) | Refugio | 1 | 1.68K | 250K | Dec 2000 – Jan 2007 |
| Duke Ranch -L- G-2-254684 | T - C Oil Company only | Tejas (Frio 5400) | Refugio | 1 | 1.65K | 473K | Jan 2007 – Sep 2007 |
| M. F. Lambert O-2-9325 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 1 | 1.65K | 18.7K | Jun 2009 – Feb 2011 |
| Lambert Gas Unit G-2-274195 | Hilcorp Energy Company only | Tom Oconnor (7930) | Refugio | 1 | 1.62K | 92.5K | Mar 2014 – Dec 2019 |
| Hynes G-2-132904 | Omega Energy Corp. only | Falcar (4900' Sand) | Refugio | 1 | 1.61K | 518K | Jan 1993 – May 1999 |
| Shay "B" O-2-8357 | Wiser Oil Company, The only | Greta, Deep (5700) | Refugio | 1 | 1.6K | 14.5K | Jan 1998 – Jul 1998 |