| Heard, Fannie V. W., Mrs. O-2-2586 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 60 | 2.28M | 1.64M | Jan 1993 – Apr 2026 |
| Oconnor, Thomas, -C- O-2-2587 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 51 | 2.22M | 2.1M | Jan 1993 – Apr 2026 |
| Heard, Clement O-2-2585 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 20 | 1.34M | 986K | Jan 1993 – Apr 2026 |
| Reilly, Annie, et Vir O-2-2588 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 15 | 1.07M | 997K | Jan 1993 – Apr 2026 |
| Lambert, M. F. O-2-2590 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 39 | 446K | 1.58M | Jan 1993 – Apr 2026 |
| Williams, Maude, Etal, -A- O-2-2589 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 9 | 323K | 573K | Jan 1993 – Apr 2025 |
| Bauer, Mary Claire, et Vir O-2-2583 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 13 | 274K | 419K | Jan 1993 – Dec 2023 |
| Lambert, M. F. O-2-2581 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 6 | 241K | 367K | Jan 1993 – May 2019 |
| Heard, Claude E., Etal O-2-2584 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 7 | 196K | 433K | Jan 1993 – Mar 2011 |
| Oconner, M. E. O-2-6867 | T-C Oil Company, LLC only | Refugio Old (5500) | Refugio | 1 | 155K | 204K | Jan 1993 – Jan 2022 |
| Oconnor, Thomas, -A- O-2-2627 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 9 | 151K | 150K | Jan 1993 – Jan 2022 |
| Shelton G-2-208006 | Neumin Production Company only | Refugio-Fox (5500) | Refugio | 1 | 78.4K | 144K | Dec 2004 – Oct 2009 |
| Miguelita Scanio O-2-9442 | Digital Operating Company LLC only | Tom Oconnor (6550) | Refugio | 1 | 74.3K | 51.3K | Jun 2010 – Dec 2022 |
| Miguelita Scanio O-2-10904 | Acock/Anaqua Operating Co., LP only | Refugio-Fox (6550) | Refugio | 1 | 42.7K | 35.9K | Feb 2014 – Dec 2019 |
| Shay G-2-221898 | Paloma Operating, LLC only | Refugio Old (6550 Frio) | Refugio | 1 | 41.8K | 71.1K | Sep 2006 – Feb 2023 |
| Marberry O-2-5837 | Allegiant Resources, LLC only | McFaddin (5500 S) | Refugio | 1 | 36.8K | 2.3K | Jan 1993 – May 2009 |
| Welder "C" O-2-8267 | Forest Oil Corporation only | Phil Power (5550) | Refugio | 1 | 25K | 77K | Mar 1997 – Apr 2006 |
| Fox, W. J. "A" O-2-8957 | Hilcorp Energy Company only | Hynes Ranch (Frio 5500) | Refugio | 1 | 24.4K | 118K | Dec 2004 – Oct 2009 |
| O'Connor, L. W. 2 O-2-9036 | O'Connor Energy Management, LLC only | Mary Ellen O'Connor (5500 Sand) | Refugio | 1 | 21.3K | 2.17K | Sep 2006 – Dec 2015 |
| Schirmer, Henry O-2-5426 | Bent Wing Energy, LLC only | Bonnie View (4550 Stringer) | Refugio | 1 | 20.5K | 16.7K | Jan 1993 – Feb 2001 |
| Roche O-2-7203 | D&H-S-S Production Co.,inc only | Crass (5500) | Refugio | 1 | 20.3K | 21 | Jan 1993 – Feb 2000 |
| Maude Williams et al 'B' O-2-11161 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 3 | 17.1K | 8.96K | Nov 2015 – Nov 2023 |
| Scanio, Miguelita G-2-234584 | Digital Operating Company LLC only | Refugio Old (6550 Frio) | Refugio | 1 | 15K | 615K | Dec 2007 – Nov 2025 |
| Reilly, Annie et Vir O-2-10577 | Hilcorp Energy Company only | Tom Oconnor (3550) | Refugio | 1 | 14.1K | 4.19K | Aug 2013 – Aug 2019 |
| O'Brien, J. J. O-2-8664 | Emerald Oil & Gas LC only | Refugio Old (5500) | Refugio | 2 | 8.91K | 2.68K | Apr 2001 – May 2004 |
| Reilly, Annie et Vir O-2-8859 | Hilcorp Energy Company only | Tom Oconnor (6550) | Refugio | 1 | 8.59K | 79.8K | May 2004 – Feb 2007 |
| Welder "G" G-2-163124 | Wiser Oil Company, The only | Phil Power (5550) | Refugio | 1 | 8.1K | 687K | Apr 1997 – Jul 2004 |
| Kentucky-Fagan O-2-10494 | Anderson Oil Ltd. only | McFaddin (5500) | Refugio | 1 | 7.94K | 0 | Jul 2011 – Apr 2026 |
| O'Connor, Thomas "B" O-2-8090 | Quintana Pet. Corp. only | Melon Creek, East (6550) | Refugio | 1 | 5.53K | 18.6K | Jun 1995 – Apr 1997 |
| Vidauri "A" G-2-219589 | Charro Operating, L.L.C. only | Vidauri Ranch (5560) | Refugio | 1 | 5.12K | 811K | Nov 2005 – Apr 2009 |
| O'Connor O-2-11979 | T-C Oil Company, LLC only | McFaddin (5500 S) | Refugio | 1 | 4.56K | 12.7K | Feb 2020 – May 2022 |
| Maude Williams et al 'A' O-2-10985 | Hilcorp Energy Company only | Lake Pasture (FS-550) | Refugio | 2 | 4.26K | 13.7K | Jul 2015 – Jun 2018 |
| Oconnor, Thomas "E" O-2-4861 | T-C Oil Company, LLC only | Tom Oconnor (5500 Sand) | Refugio | 4 | 3.89K | 8.77K | Jan 1993 – Mar 1998 |
| Welder "G" G-2-162524 | Forest Oil Corporation only | Phil Power (5550) | Refugio | 1 | 3.46K | 2.03M | Feb 1997 – Mar 2010 |
| Heard, Ira, -A- O-2-2582 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 2 | 3.02K | 13.5K | Aug 1994 – Oct 1995 |
| Schirmer-Buck Unit O-2-9239 | Christopher Oil & Gas Inc only | Bonnie View (4550 Stringer) | Refugio | 1 | 2.4K | 0 | Jul 2008 – Dec 2009 |
| 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 |
| 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 |
| Fox, W. J. O-2-9180 | Hilcorp Energy Company only | Refugio-Fox (6550) | Refugio | 1 | 2.06K | 11.2K | Feb 2008 – Apr 2011 |
| 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 |
| Vidauri "F" G-2-244754 | Charro Operating, L.L.C. only | Phil Power (5550) | Refugio | 1 | 1.71K | 275K | Nov 2008 – Apr 2011 |
| Marberry B O-2-10749 | Great Bay Operations, LLC only | McFaddin (5500) | Refugio | 1 | 1.3K | 1.24K | Dec 2013 – Apr 2014 |
| Lambert, M. F. G-2-159376 | Hilcorp Energy Company only | Refugio-Fox (5500) | Refugio | 1 | 1.25K | 474K | Jun 1996 – Jul 2004 |
| Heard, Clement O-2-9480 | Hilcorp Energy Company only | Tom Oconnor (6550) | Refugio | 1 | 1.06K | 3.86K | Oct 2010 – Feb 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 |
| Fagan G-2-263017 | Great Bay Operations, LLC only | McFaddin (5510) | Refugio | 1 | 816 | 44.7K | Aug 2011 – Feb 2012 |
| Blanca Shay G-2-245564 | Charro Operating, L.L.C. only | Gaffney (5540, N W) | Refugio | 1 | 714 | 806K | Mar 2009 – Feb 2019 |
| O'Connor, M V Est G-2-200495 | Cummins & Walker Oil Co., Inc. only | Refugio-Fox (5500) | Refugio | 1 | 688 | 220K | Dec 2003 – Jun 2010 |
| O'Connor, M.V. Estate "C" G-2-242790 | Charro Operating, L.L.C. only | Train Wreck (5500) | Refugio | 1 | 685 | 106K | Oct 2008 – Jul 2010 |