| O'Connor, Dennis et al "L" O-2-7768 | T - C Oil Company only | Lake Pasture (FT-566) | Refugio | 1 | 1.59K | 18K | Jan 1993 – Aug 1994 |
| Roche G-2-183821 | Wiser Oil Company, The only | Cactus (Frio Massive) | Refugio | 1 | 1.59K | 135K | Feb 2000 – Jan 2001 |
| Davenport, O. H. O-2-8590 | CTR Petroleum, Inc. only | Refugio New (4500) | Refugio | 1 | 1.59K | 938 | Jan 2001 – Mar 2003 |
| Obrien, J. M., -B- O-2-3993 | Dewbre Petroleum Corporation only | Greta (4400) | Refugio | 2 | 1.57K | 1.57K | Jan 1993 – Jan 1994 |
| La Rosa Unit G-2-224340 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 1.55K | 64.6K | Jul 2006 – Mar 2022 |
| Wood, L. Est. "C" O-2-8762 | Momentum Energy Corporation only | Woodsboro (Boenig) | Refugio | 1 | 1.55K | 1.19K | Jan 2003 – May 2022 |
| Mary Alice Anderson et al 'A' O-2-12526 | T-C Oil Company, LLC only | Fagan (5650) | Refugio | 1 | 1.55K | 11.1K | Feb 2023 – Jul 2024 |
| Heard, Clement O-2-4790 | Quintana Pet. Corp. only | Tom Oconnor (6600) | Refugio | 4 | 1.52K | 56.6K | Jan 1993 – Nov 1993 |
| Scanio-Shelton O-2-11012 | High Plains Gas Systems, Inc. only | Mission River (5800) | Refugio | 1 | 1.51K | 0 | Nov 2013 – Sep 2015 |
| O'Conner, Dennis Etal "N" O-2-7106 | T - C Oil Company only | Huff ( 341) | Refugio | 2 | 1.51K | 9.6K | Jan 1993 – Apr 1994 |
| Rooke G-2-291543 | San Isidro Development Co, L. C. only | Refugio New (6800) | Refugio | 1 | 1.5K | 213K | Sep 2021 – Jul 2023 |
| Scanio, Miguelita O-2-8630 | Acock/Anaqua Operating Co., LP only | Refugio-Fox (5800) | Refugio | 1 | 1.5K | 607 | Jun 2001 – Feb 2002 |
| Heard, Mrs. Fannie V. W. G-2-182046 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 1.5K | 675K | Feb 2001 – Dec 2004 |
| Hynes, Jamie G-2-137068 | Dinero Oil Corporation only | Refugio-Fox (Kwa Sand) | Refugio | 1 | 1.49K | 122K | Jan 1993 – Jul 1996 |
| Sasse G-2-2439 | Acock/Anaqua Operating Co., LP only | La Rosa (6750, Above, Gas) | Refugio | 1 | 1.47K | 114K | Jan 1993 – Oct 2001 |
| O'Brien, J. J. G-2-185207 | Emerald Oil & Gas LC only | Refugio Old | Refugio | 1 | 1.47K | 19.5K | May 2001 – Sep 2002 |
| Williams, Maude, Etal -B- O-2-1948 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 3 | 1.46K | 8.19K | Apr 1993 – Feb 1998 |
| Schirmer-Buck Unit O-2-8565 | Christopher Oil & Gas Inc only | Bonnie View (5400) | Refugio | 1 | 1.46K | 3.83K | Sep 2000 – Nov 2000 |
| O'Connor, M. E. O-2-5564 | T-C Oil Company, LLC only | Woodsboro, South (4200) | Refugio | 2 | 1.46K | 0 | Aug 2015 – Apr 2017 |
| Braman -D- O-2-11718 | T-C Oil Company, LLC only | Braman (8000) | Refugio | 1 | 1.45K | 7.65K | Apr 2019 – May 2019 |
| Rooke G-2-257889 | Coastal Plains Exploration, LLC only | Woodsboro, West (Frio 6600) | Refugio | 1 | 1.45K | 76.4K | Apr 2010 – Oct 2010 |
| Heard, Ira "A" O-2-8318 | Quintana Pet. Corp. only | Tom Oconnor (6775) | Refugio | 1 | 1.45K | 10.7K | Feb 1997 – May 1997 |
| Welder 'D' O-2-8419 | Wiser Oil Company, The only | Phil Power (5700) | Refugio | 1 | 1.44K | 0 | Mar 1998 – Jul 1998 |
| Fagan M G-2-277256 | Anderson Oil Ltd. only | Fagan (8050) | Refugio | 1 | 1.44K | 39.9K | Jan 2015 – Oct 2016 |
| Fox, W. J. 'A' G-2-269058 | Hilcorp Energy Company only | Hynes Ranch (F- 4) | Refugio | 1 | 1.43K | 61.4K | Jul 2012 – May 2013 |
| Welder-Terrell G-2-194137 | C & E Operating, Inc. only | Devil's Run (5250) | Refugio | 1 | 1.42K | 403K | Jan 2003 – Aug 2004 |
| Welder "C" G-2-163122 | Forest Oil Corporation only | Vidauri (5050) | Refugio | 1 | 1.42K | 1.57M | Mar 1997 – Mar 2005 |
| O'Connor, M. V. Estate G-2-158297 | Kebo Oil & Gas, Inc. only | Greta, NW. (Dr. Rockit) | Refugio | 1 | 1.42K | 2.23M | Jan 1996 – Apr 2009 |
| La Rosa Gas Unit G-2-132256 | Laroco LLP only | La Rosa (5700) | Refugio | 1 | 1.41K | 19.6K | Jan 1993 – Jan 1994 |
| Lambert, M. F. O-2-8610 | Hilcorp Energy Company only | Tom Oconnor (5440) | Refugio | 1 | 1.4K | 15.5K | Mar 2001 – Apr 2003 |
| Vidauri G-2-233322 | Charro Operating, L.L.C. only | Vidauri (5800) | Refugio | 1 | 1.4K | 236K | Jan 2008 – May 2011 |
| Rooke, B. D. G-2-167404 | Laroco LLP only | La Rosa (6750, Below, Gas) | Refugio | 1 | 1.39K | 80K | Jan 1998 – Dec 1998 |
| Scanio Shelton G-2-230611 | Acock/Anaqua Operating Co., LP only | Mission River (6400) | Refugio | 1 | 1.38K | 121K | Dec 2006 – Mar 2008 |
| M. F. Lambert 151 O-2-9387 | Hilcorp Energy Company only | Tom Oconnor (6300) | Refugio | 1 | 1.36K | 190 | Mar 2010 – Sep 2010 |
| Thomson-Barrow Corp. C G-2-175655 | C & E Operating, Inc. only | Peponi Ranch (Frio 4800) | Refugio | 1 | 1.36K | 167K | Oct 1999 – Feb 2001 |
| Harry, Bert Gas Unit #1 G-2-131545 | Geiser, D. Allen only | Bert Harry (Lower Sinton) | Refugio | 1 | 1.35K | 369K | Jan 1993 – Oct 1997 |
| O'Connor -H- O-2-10579 | T-C Oil Company, LLC only | Huff (3250) | Refugio | 1 | 1.34K | 19.7K | Jul 2013 – Jun 2014 |
| Swyka G-2-183639 | C & E Operating, Inc. only | Laura Thomson (5600) | Refugio | 1 | 1.33K | 347K | Apr 2001 – May 2007 |
| Scanio, Miguelita G-2-280122 | Digital Operating Company LLC only | Refugio-Fox (6300 A) | Refugio | 1 | 1.32K | 81.9K | Nov 2015 – May 2020 |
| M. F. Lambert 'A' O-2-10459 | Hilcorp Energy Company only | Tom Oconnor (6600, West) | Refugio | 1 | 1.32K | 4.88K | Mar 2013 – Jun 2013 |
| Lawrence Wood G-2-148116 | Anaqua Oil & Gas, Inc. only | Woodsboro | Refugio | 1 | 1.31K | 44.5K | Sep 1993 – Feb 1994 |
| Roche G-2-295403 | Paloma Operating, LLC only | Roche (-B-) | Refugio | 1 | 1.3K | 52.7K | Apr 2023 – Apr 2024 |
| Marberry B O-2-10749 | Great Bay Operations, LLC only | McFaddin (5500) | Refugio | 1 | 1.3K | 1.24K | Dec 2013 – Apr 2014 |
| Powers, Phil O-2-1406 | Eagleford Operating, Inc. only | Refugio Old | Refugio | 6 | 1.29K | 10.7K | Jan 1996 – Apr 2003 |
| O'Connor, Thomas 'B' G-2-165954 | Hilcorp Energy Company only | Mary Ellen Oconnor (7900) | Refugio | 1 | 1.29K | 45.3K | Oct 1997 – Apr 1999 |
| Duke Ranch -J- G-2-216543 | T-C Oil Company, LLC only | Tejas (Frio 4600) | Refugio | 1 | 1.27K | 1.86M | Nov 2005 – Feb 2010 |
| Clement Heard O-2-9439 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 1 | 1.26K | 150 | Jun 2010 – Aug 2023 |
| Fox, W.J. G-2-162939 | Hilcorp Energy Company only | Refugio-Fox (4700) | Refugio | 1 | 1.26K | 134K | Feb 1997 – Jan 2007 |
| Niemann, Emil O-2-8781 | J&G Oil & Gas only | Bonnie View (5400) | Refugio | 1 | 1.25K | 8.17K | Feb 2003 – Jun 2003 |
| Lambert, M. F. G-2-159376 | Hilcorp Energy Company only | Refugio-Fox (5500) | Refugio | 1 | 1.25K | 474K | Jun 1996 – Jul 2004 |