| Reilly, Annie et Vir G-2-182729 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 1.24K | 438K | Mar 2001 – Jan 2002 |
| Williams, Maude, et al -A- O-2-4911 | Quintana Pet. Corp. only | Lake Pasture (FT-690) | Refugio | 3 | 1.23K | 5.19K | Jan 1993 – Jun 1993 |
| O'Connor, Mary Ellen O-2-8106 | Emerald Oil & Gas LC only | Mary Ellen Oconnor (FQ-40 Sand) | Refugio | 2 | 1.23K | 6.7K | Sep 1995 – Mar 1996 |
| Welder "D" G-2-159747 | Wiser Oil Company, The only | Phil Power (5050 Frio) | Refugio | 1 | 1.23K | 840K | Jul 1996 – Aug 2000 |
| Fagan G-2-252334 | Allegiant Resources, LLC only | McFaddin (5400 Upper) | Refugio | 1 | 1.21K | 43.4K | Oct 2009 – Jul 2010 |
| J. J. O'Brien G-2-260704 | Greta Operating Company LLC only | Greta (5780) | Refugio | 1 | 1.21K | 320K | Jan 2011 – May 2019 |
| Toland O-2-6650 | CTR Petroleum, Inc. only | La Rosa, North (Weiss, Upper) | Refugio | 2 | 1.21K | 19 | Jan 1993 – Dec 1994 |
| Rooke, P. H. O-2-2431 | 38 Oil & Gas, L.L.C. only | Refugio New (6100 Stringer 2 SD) | Refugio | 2 | 1.19K | 9.34K | Jan 1993 – Sep 1993 |
| Braman -A- G-2-261898 | T-C Oil Company, LLC only | Braman (8700) | Refugio | 1 | 1.16K | 54.8K | Jul 2011 – Sep 2011 |
| Miguelita Scanio G-2-282648 | Digital Operating Company LLC only | Tom Oconnor (6470) | Refugio | 1 | 1.16K | 59.6K | Aug 2016 – May 2022 |
| Trevino O-2-3138 | A T M Corporation only | Refugio Old | Refugio | 1 | 1.16K | 302 | Jan 1993 – May 1999 |
| Wood, L. Est 'C' G-2-176332 | Cummins & Walker Oil Co., Inc. only | Woodsboro (6500) | Refugio | 1 | 1.16K | 38.9K | Jan 2000 – May 2000 |
| O'Connor, Thomas "C" O-2-8144 | Quintana Pet. Corp. only | Tom Oconnor (5400 Sand) | Refugio | 1 | 1.15K | 6.82K | Feb 1996 – Oct 1997 |
| Spaulding, J. W. G-2-174394 | Laroco LLP only | La Rosa (6750, Above, Gas) | Refugio | 1 | 1.14K | 13.6K | May 1999 – May 1999 |
| Welder "D" O-2-8411 | Wiser Oil Company, The only | Phil Power (5215) | Refugio | 2 | 1.14K | 5.82K | May 1998 – Jul 1999 |
| Niemann, Emil G-2-180872 | J&G Oil & Gas only | Bonnie View (5700) | Refugio | 1 | 1.13K | 213K | Jul 2000 – Feb 2002 |
| Martin O'Connor -M- O-2-9703 | T-C Oil Company, LLC only | Tivoli (Greta Second) | Refugio | 1 | 1.13K | 117K | Oct 2011 – Jun 2015 |
| Rooke, B. D. G-2-171437 | Laroco LLP only | La Rosa (6750, Below, Gas) | Refugio | 1 | 1.12K | 87.9K | Oct 1998 – Jun 1999 |
| Welder Heirs G-2-180311 | C & E Operating, Inc. only | Devils Run (6200) | Refugio | 1 | 1.12K | 141K | Sep 2000 – Sep 2003 |
| Davenport, O. H. O-2-5272 | CTR Petroleum, Inc. only | Refugio New (4500) | Refugio | 1 | 1.11K | 21 | Jan 1993 – Dec 1994 |
| Wood, Lawrence -A- G-2-155267 | Hart Petroleum Services, Inc only | Woodsboro (6600) | Refugio | 1 | 1.09K | 32.1K | Jun 1995 – Jan 1996 |
| Rooke, F. B. & Sons -E- O-2-3471 | H & D Operating Company only | Roche (-C-) | Refugio | 1 | 1.09K | 2.51K | Jan 1993 – Aug 1993 |
| Heard, Clement O-2-9142 | Hilcorp Energy Company only | Tom Oconnor | Refugio | 1 | 1.09K | 3.86K | May 2007 – Nov 2007 |
| Heard, Claude E. et Al O-2-8743 | Hilcorp Energy Company only | Tom Oconnor (5450 Sand) | Refugio | 1 | 1.08K | 13K | Oct 2002 – Apr 2004 |
| Welder "D" G-2-162386 | Wiser Oil Company, The only | Vidauri (5000) | Refugio | 1 | 1.08K | 165K | Dec 1996 – Apr 1998 |
| Vidauri "E" G-2-242035 | Charro Operating, L.L.C. only | Vidauri, SW. (5100) | Refugio | 1 | 1.07K | 457K | Jul 2008 – May 2013 |
| Shelton G-2-261546 | Kebo Oil & Gas, Inc. only | Lake Pasture (FT-680-W) | Refugio | 1 | 1.07K | 7.48K | Mar 2011 – Nov 2011 |
| Davenport, O. H. G-2-67282 | CTR Petroleum, Inc. only | Refugio Heard (5700) | Refugio | 1 | 1.07K | 135K | Mar 1995 – Aug 1997 |
| Heard, Clement O-2-9480 | Hilcorp Energy Company only | Tom Oconnor (6550) | Refugio | 1 | 1.06K | 3.86K | Oct 2010 – Feb 2011 |
| Scanio, Miguelita G-2-200166 | Digital Operating Company LLC only | Refugio-Fox (6100) | Refugio | 1 | 1.05K | 233K | Nov 2003 – Dec 2025 |
| Heard, Fannie V. W. Mrs. O-2-8987 | Hilcorp Energy Company only | Tom Oconnor (5450 Sand) | Refugio | 1 | 1.04K | 918 | Sep 2005 – Apr 2006 |
| Schirmer "C" O-2-8469 | Christopher Oil & Gas Inc only | Bonnie View, South (6280) | Refugio | 1 | 1.04K | 4.93K | Sep 1999 – Oct 1999 |
| Ira Heard "A" O-2-9649 | Hilcorp Energy Company only | Tom Oconnor (5900 Sand) | Refugio | 1 | 1.03K | 739 | May 2011 – Aug 2011 |
| Breaker O-2-8025 | Payne, B.R. Oil & Gas, Inc. only | La Rosa (Consolidated, Oil) | Refugio | 1 | 1.03K | 0 | Jan 1995 – Mar 2004 |
| O'Connor, Thomas "A" O-2-8644 | Hilcorp Energy Company only | Tom Oconnor (5625 Sand) | Refugio | 1 | 1.02K | 1.5K | Jul 2001 – Jun 2002 |
| Lambert, M. F. O-2-8885 | Hilcorp Energy Company only | Greta, Deep (5700) | Refugio | 1 | 998 | 53K | Aug 2004 – Oct 2006 |
| Thomson-Barrow Corp. C G-2-167791 | C & E Operating, Inc. only | Laura Thomson (Vicksburg 5907) | Refugio | 1 | 983 | 785K | Jan 1998 – Mar 2003 |
| Annie Reilly et Vir O-2-10954 | Hilcorp Energy Company only | Tom O'Connor (3560) | Refugio | 1 | 981 | 387 | Mar 2015 – Feb 2016 |
| Heard, Mrs. Fannie V. W. G-2-182918 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 963 | 207K | Mar 2001 – Apr 2001 |
| Mary Claire Bauer et Vir G-2-257657 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 960 | 74.3K | Aug 2010 – Dec 2012 |
| Welder "C" G-2-172720 | Hilcorp Energy Company only | Phil Power (5200-B) | Refugio | 1 | 959 | 309K | Dec 1998 – Apr 2002 |
| Gilliam G-2-98183 | Hyquest Energy, Inc. only | Bonnie View (Frio 5700) | Refugio | 1 | 958 | 115K | Jan 1993 – Feb 1996 |
| Thomson-Barrow Corp. C G-2-187330 | C & E Operating, Inc. only | Laura Thomson (Vicksburg 5907) | Refugio | 1 | 958 | 285K | Aug 2001 – Nov 2009 |
| Mary Claire Bauer et Vir O-2-10424 | Hilcorp Energy Company only | Tom O'Connor (6700) | Refugio | 1 | 953 | 726 | Jan 2013 – Mar 2013 |
| Oconnor, Thomas "D" O-2-9147 | Hilcorp Energy Company only | Mary Ellen Oconnor (FQ- 9) | Refugio | 1 | 947 | 16.9K | Aug 2007 – Jan 2015 |
| Fagan -M- O-2-7900 | Dinero Oil Corporation only | Fagan (7500) | Refugio | 1 | 946 | 2.75K | Aug 1993 – Aug 1994 |
| Welder-Terrell G-2-204466 | C & E Operating, Inc. only | Devil's Run (5250) | Refugio | 1 | 935 | 261K | Aug 2003 – Jan 2005 |
| Rooke O-2-9335 | Coastal Plains Exploration, LLC only | Woodsboro, West (Frio 6600) | Refugio | 1 | 930 | 54.7K | Aug 2009 – Mar 2010 |
| O'Connor, Joe -A- G-2-255324 | T - C Oil Company only | River Pasture (5700) | Refugio | 1 | 926 | 178K | Feb 2010 – Mar 2011 |
| O'Connor, Thomas "B" O-2-8308 | T-C Oil Company, LLC only | Tom Oconnor (5500 Sand) | Refugio | 1 | 911 | 3.47K | Aug 1997 – Jun 1998 |