| Rooke, P. H. O-2-7410 | 38 Oil & Gas, L.L.C. only | Refugio New (5200 Sand) | Refugio | 1 | 898 | 559 | Jul 1996 – Feb 1997 |
| Welder "C" O-2-11271 | Remora Operating, LLC only | Phil Power (5000) | Refugio | 1 | 897 | 4.98K | Sep 2015 – Apr 2019 |
| Mitchell, John N. Etal O-2-2040 | Bay Rock Operating Company only | Woodsboro (FT-8 Sand) | Refugio | 1 | 893 | 14 | Jan 1993 – Feb 1994 |
| Williams, Maude et al "A" O-2-7881 | Quintana Pet. Corp. only | Tom Oconnor (5250) | Refugio | 1 | 882 | 2.09K | Jun 1993 – Dec 1993 |
| Lambert, M. F. G-2-36882 | Hilcorp Energy Company only | Tom Oconnor (4950) | Refugio | 1 | 878 | 991K | Jan 1993 – Feb 2022 |
| M. E. O'Connor O-2-11717 | T-C Oil Company, LLC only | Mary Ellen Oconnor (Stray 5150) | Refugio | 1 | 878 | 0 | Feb 2019 – May 2019 |
| Welder 'C' G-2-250307 | Remora Operating, LLC only | Phil Power (4870) | Refugio | 1 | 871 | 52.9K | Aug 2006 – Feb 2017 |
| O'Connor, L.W. O-2-7996 | O'Connor Energy Management, LLC only | Mary Ellen Oconnor (FT-28) | Refugio | 1 | 863 | 3.51K | Sep 1994 – May 1995 |
| M.V. O'Connor Estate "E" O-2-9374 | Charro Operating, L.L.C. only | Greta (F-2-A) | Refugio | 1 | 861 | 17.3K | Sep 2009 – Oct 2009 |
| Welder G-2-156863 | Wiser Oil Company, The only | Vidauri (5050) | Refugio | 1 | 855 | 332K | Dec 1995 – Nov 1998 |
| Heard, Clement O-2-9128 | Hilcorp Energy Company only | Tom Oconnor (5450 Sand) | Refugio | 1 | 851 | 2.16K | Mar 2007 – Aug 2008 |
| Heard G-2-229847 | Acock/Anaqua Operating Co., LP only | Refugio Heard (6200) | Refugio | 1 | 846 | 164K | Aug 2007 – Jan 2014 |
| Rooke "A" G-2-170637 | Wofford, C. J. only | Refugio Heard (6200) | Refugio | 1 | 841 | 94K | Sep 1998 – Apr 2005 |
| Roche G-2-182263 | Wiser Oil Company, The only | Cranell, W. (Frio Massive) | Refugio | 1 | 833 | 236K | Feb 2000 – Feb 2001 |
| Shay, Mary A. O-2-5775 | Mueller Engineering Corp. only | Phil Power (5215) | Refugio | 1 | 831 | 10 | Jan 1993 – Oct 1993 |
| Wood River Ranch "D" O-2-10117 | Kebo Oil & Gas, Inc. only | Woodsboro (5750 Sand) | Refugio | 1 | 826 | 3.53K | Jan 2012 – Sep 2012 |
| Anzaldua-Lott Unit O-1-8579 | Shefts & Shefts, Inc. only | Salt Flat | Caldwell | 2 | 822 | 31 | Jan 1993 – Apr 2002 |
| Rooke, F. B. 4 G-2-180892 | C & E Operating, Inc. only | Roche, NE (Frio 6700) | Refugio | 1 | 821 | 53.7K | Oct 2000 – Jun 2005 |
| Fagan G-2-263017 | Great Bay Operations, LLC only | McFaddin (5510) | Refugio | 1 | 816 | 44.7K | Aug 2011 – Feb 2012 |
| Lambert, M. F. G-2-83736 | Devon Energy Production Co, L.P. only | Tom Oconnor | Refugio | 1 | 807 | 185K | Jan 1993 – Dec 1994 |
| La Rosa Unit G-2-151667 | Remora Management, LLC only | La Rosa (6750, Above, Gas) | Refugio | 1 | 806 | 128K | Sep 1994 – Jul 2002 |
| Miguelita Scanio G-2-290877 | Digital Operating Company LLC only | Refugio Old (6200) | Refugio | 1 | 798 | 51.3K | Jan 2021 – Dec 2025 |
| O'Connor, Thomas "B" O-2-7560 | Hilcorp Energy Company only | Mary Ellen Oconnor (FQ-25) | Refugio | 2 | 788 | 2.94K | May 1993 – Apr 2015 |
| M. F. Lambert 151 O-2-9279 | Hilcorp Energy Company only | Tom Oconnor (7750) | Refugio | 1 | 781 | 1.58K | Dec 2008 – Feb 2009 |
| Scanio/Shelton G-2-226852 | High Plains Gas Systems, Inc. only | Mission River (5800) | Refugio | 1 | 780 | 195K | Dec 2006 – Nov 2009 |
| Heard, Ira "B" O-2-9044 | Hilcorp Energy Company only | Tom Oconnor | Refugio | 1 | 775 | 82.6K | Apr 2006 – Jul 2008 |
| Lambert, M. F."h" O-2-4120 | Pennzoil Exploration & Prod. Co. only | Greta, Deep (5800) | Refugio | 2 | 771 | 1.8K | Jan 1993 – Aug 1993 |
| Larosa Unit G-2-149211 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 765 | 304K | Mar 1994 – Mar 1998 |
| Williams, Maude et al "A" G-2-205734 | Hilcorp Energy Company only | Lake Pasture (FT-785) | Refugio | 1 | 763 | 96.2K | Oct 2004 – May 2005 |
| Wood, L. Est. O-2-8470 | Cummins & Walker Oil Co., Inc. only | Murphy L. (Sinton 1ST) | Refugio | 1 | 760 | 930 | Oct 1999 – Oct 1999 |
| La Rosa Unit G-2-231112 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 757 | 96K | Sep 2007 – Jan 2021 |
| Roche, K. D. A G-2-151637 | H & D Operating Company only | Roche (-B-) | Refugio | 1 | 756 | 64.7K | Oct 1994 – Jun 1995 |
| Ryals G-2-255828 | Paloma Operating, LLC only | Refugio Heard (5600) | Refugio | 1 | 749 | 252K | Mar 2010 – Dec 2015 |
| Mary Claire Bauer et Vir O-2-11136 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 743 | 152 | Aug 2015 – May 2016 |
| Wilson Heard "A" O-2-9294 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 1 | 741 | 1.97K | Feb 2009 – Aug 2009 |
| Lambert, M. F. O-2-3917 | Devon Energy Production Co, L.P. only | Tom Oconnor (4500 Greta Mass.) | Refugio | 1 | 728 | 11K | Jan 1993 – Oct 1993 |
| Roche Ranch Encino G-4-180435 | Finaly Resources LLC only | Encino (6400) | Refugio | 1 | 728 | 133K | Nov 2000 – Nov 2013 |
| Blanca Shay G-2-245564 | Charro Operating, L.L.C. only | Gaffney (5540, N W) | Refugio | 1 | 714 | 806K | Mar 2009 – Feb 2019 |
| Oconnor, Thomas O-2-4015 | Cambrian Management, Ltd. only | Greta, Deep (5660) | Refugio | 2 | 705 | 1.49K | Apr 2004 – Aug 2004 |
| Marberry "B" O-2-9212 | Remora Management, LLC only | McFaddin (4400) | Refugio | 1 | 704 | 0 | Apr 2008 – Aug 2008 |
| 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 |
| O'Brien-Harkins G-2-213467 | Cummins & Walker Oil Co., Inc. only | Refugio-Fox (6300) | Refugio | 1 | 680 | 96.1K | Sep 2005 – Aug 2006 |
| Scanio/Shelton G-2-205432 | High Plains Gas Systems, Inc. only | Mission River (6300) | Refugio | 1 | 674 | 75.7K | Aug 2004 – Jun 2009 |
| O'Connor "E" G-2-187290 | Bishop Petroleum Inc. only | Train Wreck (3650 SD) | Refugio | 1 | 670 | 114K | Oct 2001 – Jun 2003 |
| Duke Ranch-L- G-2-254689 | T-C Oil Company, LLC only | Tejas (Frio 5100) | Refugio | 1 | 669 | 189K | Nov 2007 – Aug 2010 |
| Roche, K. D. A G-2-173622 | H & D Operating Company only | Roche (5800) | Refugio | 1 | 662 | 75.5K | Apr 1999 – Jan 2002 |
| Collins, Pearl Swift G-2-166365 | Christopher Oil & Gas Inc only | Bonnie View (6250) | Refugio | 1 | 661 | 52K | Dec 1997 – Apr 1998 |
| Welder 'C' 25 O-2-11080 | Remora Operating, LLC only | Phil Power (5050 Frio) | Refugio | 1 | 654 | 34.1K | Aug 2015 – Dec 2016 |
| Vidauri "F" G-2-281767 | Charro Operating, L.L.C. only | Vidauri (5800) | Refugio | 1 | 650 | 133K | Oct 2016 – Jun 2019 |