| Marberry "B" G-2-245475 | Frostwood Energy, LLC only | McFaddin (2600) | Refugio | 1 | 78 | 20.7K | Feb 2009 – Aug 2009 |
| O'Connor, Thomas 'B' G-2-179411 | Hilcorp Energy Company only | Mary Ellen Oconnor (FT-5) | Refugio | 1 | 78 | 113K | Aug 2000 – Dec 2009 |
| M. F. Lambert O-2-10269 | Hilcorp Energy Company only | Tom Oconnor (7500) | Refugio | 1 | 78 | 3.42K | May 2012 – Jul 2012 |
| O'Connor, Thomas 'A' O-2-11489 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 78 | 46 | Aug 2017 – Oct 2017 |
| Mary Alice Anderson, et al -A- G-2-293713 | T-C Oil Company, LLC only | Fagan (5830) | Refugio | 1 | 74 | 31.7K | Oct 2022 – Jan 2024 |
| O'Brien-Harkins G-2-197271 | Cummins & Walker Oil Co., Inc. only | Refugio-Fox (5000) | Refugio | 1 | 73 | 100K | Jul 2003 – Oct 2007 |
| Schirmer "C-120" G-2-169259 | Bent Wing Energy, LLC only | Bonnie View (5300) | Refugio | 1 | 72 | 617K | May 1998 – Oct 2024 |
| W. J. Fox "A" O-2-9244 | Hilcorp Energy Company only | Greta (4400) | Refugio | 1 | 72 | 2 | Aug 2008 – Sep 2017 |
| Welder "G" G-2-163126 | Wiser Oil Company, The only | Sharps Lake (3150) | Refugio | 1 | 70 | 11.1K | Apr 1997 – Aug 1997 |
| Heard, Ira 'A' G-2-162951 | Quintana Pet. Corp. only | Tom Oconnor (6300) | Refugio | 1 | 70 | 20.7K | Mar 1997 – Nov 1997 |
| Scanio, M G-2-198456 | Paloma Operating, LLC only | Tom Oconnor (7930) | Refugio | 1 | 70 | 3.43K | Jun 2003 – Apr 2004 |
| Lambert, M. F. G-2-93703 | Hilcorp Energy Company only | Tom Oconnor (4200) | Refugio | 1 | 69 | 966K | Jan 1993 – Jun 2015 |
| Shay G-2-163125 | Wiser Oil Company, The only | Phil Power (5050 Frio) | Refugio | 1 | 69 | 64.4K | Apr 1997 – Mar 1999 |
| Welder "C" G-2-165430 | Wiser Oil Company, The only | Vidauri (2760) | Refugio | 1 | 68 | 530K | Aug 1997 – Sep 2003 |
| Welder G-2-156870 | Wiser Oil Company, The only | Vidauri, West (4500) | Refugio | 1 | 64 | 187K | Dec 1995 – May 1999 |
| Shay, Mary A. G-2-148469 | Mueller Engineering Corp. only | Phil Power (5050 Frio) | Refugio | 1 | 62 | 20.9K | Jan 1994 – Jul 1994 |
| Miguelita Scanio G-2-293659 | Digital Operating Company LLC only | Refugio Hynes (6400) | Refugio | 1 | 62 | 18.3K | Jul 2022 – Dec 2025 |
| Kentucky-Fagan G-2-254800 | Anderson Oil Ltd. only | McFaddin (5500) | Refugio | 1 | 60 | 7.31K | Mar 2010 – Jun 2011 |
| Vincent"i" G-2-166872 | Wiser Oil Company, The only | Vidauri (5050) | Refugio | 1 | 59 | 27.6K | Nov 1997 – Mar 1998 |
| Vincent G-2-221279 | T - C Oil Company only | Tejas (Frio 4800) | Refugio | 1 | 59 | 87.1K | Aug 2006 – Nov 2008 |
| Padilla, Tony G-2-189319 | Acock/Anaqua Operating Co., LC only | Bert Harry (Lower Sinton) | Refugio | 1 | 59 | 16.2K | Mar 2002 – Dec 2002 |
| Welder 'D' G-2-171745 | Wiser Oil Company, The only | Phil Power (5200-B) | Refugio | 1 | 58 | 49.6K | Mar 1998 – Apr 1999 |
| Welder "N" G-2-170661 | Wiser Oil Company, The only | Vidauri (2760) | Refugio | 1 | 54 | 382K | Mar 1998 – Dec 2003 |
| Miguelita Scanio G-2-282743 | Digital Operating Company LLC only | Refugio Hynes (6400) | Refugio | 1 | 53 | 78.8K | Dec 2015 – Jan 2019 |
| La Rosa Unit G-2-83006 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 52 | 62.3K | Jan 1993 – Apr 2001 |
| Clement Heard G-2-257645 | Hilcorp Energy Company only | Tom Oconnor (6550) | Refugio | 1 | 52 | 887 | Aug 2010 – Oct 2010 |
| Miguelita Scanio G-2-290745 | Digital Operating Company LLC only | Refugio-Fox (6450 Stringer) | Refugio | 1 | 52 | 5.8K | Nov 2020 – Oct 2022 |
| Wood G-2-136907 | Christopher Oil & Gas Inc only | Woodsboro, West (3500 Miocene) | Refugio | 1 | 51 | 101K | Jan 1993 – Oct 1993 |
| Welder "G" G-2-167056 | Wiser Oil Company, The only | Greta (L-14 North) | Refugio | 1 | 51 | 394K | Dec 1997 – Mar 2004 |
| Davenport, O.H. G-2-130898 | CTR Petroleum, Inc. only | Refugio Heard (6000) | Refugio | 1 | 50 | 400K | Jan 1993 – Jul 2005 |
| Lambert M. F. G-2-159373 | Devon Energy Production Co, L.P. only | Refugio-Fox (3050) | Refugio | 1 | 50 | 731K | Jul 1996 – Apr 2000 |
| Thomas O'Connor -A- G-2-208132 | T-C Oil Company, LLC only | Tom Oconnor (4600) | Refugio | 1 | 50 | 491K | Feb 2005 – Jan 2011 |
| Roche, K. D. A G-2-178397 | Kovar Operating, LLC only | Roche (6400) | Refugio | 1 | 48 | 395K | Apr 2000 – Feb 2019 |
| Martin O'Connor -H- G-2-233529 | T - C Oil Company only | River Pasture (5700) | Refugio | 1 | 43 | 38.7K | Oct 2007 – Feb 2008 |
| Welder "D" G-2-160422 | Wiser Oil Company, The only | Phil Power (5050 Frio) | Refugio | 1 | 42 | 107K | Aug 1996 – Jul 1997 |
| O'Connor G-2-288532 | T-C Oil Company, LLC only | Huff (5000) | Refugio | 1 | 41 | 57.5K | Feb 2020 – Nov 2020 |
| Rooke, B. D. G-2-174958 | Laroco LLP only | La Rosa (6750, Above, Gas) | Refugio | 1 | 40 | 105K | Jan 1999 – Jan 2000 |
| La Rosa Unit G-2-159429 | Remora Management, LLC only | La Rosa (6750, Above, Gas) | Refugio | 1 | 38 | 26.4K | Jun 1996 – Jan 1997 |
| La Rosa Unit G-2-151666 | Remora Management, LLC only | La Rosa (6750, Above, Gas) | Refugio | 1 | 35 | 230K | Sep 1994 – Mar 2000 |
| Duke Ranch -J- G-2-212609 | T - C Oil Company only | Tejas (Frio 4450) | Refugio | 1 | 35 | 44.3K | Jul 2005 – Oct 2005 |
| La Rosa Unit G-2-151068 | Rising Star Energy Partners II, only | La Rosa (6750, Above, Gas) | Refugio | 1 | 33 | 484K | Aug 1994 – Apr 2020 |
| W. J. Fox 'A' G-2-274398 | Hilcorp Energy Company only | Hynes Ranch (7160) | Refugio | 1 | 33 | 930 | Feb 2015 – Feb 2015 |
| Shay "D" G-2-166376 | Wiser Oil Company, The only | Phil Power (3470) | Refugio | 1 | 32 | 31.9K | Nov 1997 – Jun 1998 |
| Rooke, B.D. -A- O-2-8022 | H & D Operating Company only | La Rosa (Consolidated, Oil) | Refugio | 1 | 32 | 1.26K | Jan 1995 – Feb 1995 |
| Schirmer, Henry G-2-274973 | Glori Energy Holdings Inc. only | Bonnie View (5700) | Refugio | 1 | 31 | 108K | Apr 2013 – Jul 2014 |
| O'Connor, Thomas 'C' G-2-180970 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 1 | 31 | 150K | Dec 2000 – Nov 2004 |
| Huff GU 1 G-2-55665 | Great Bay Operations, LLC only | Huff ( 199) | Refugio | 1 | 30 | 411K | Jan 1993 – Feb 2002 |
| Mary Claire Bauer et Vir G-2-282666 | Hilcorp Energy Company only | Tom O'Connor (6400) | Refugio | 1 | 30 | 83 | May 2017 – Aug 2017 |
| Welder "B" G-2-158433 | Remora Operating, LLC only | Vidauri, West (4800) | Refugio | 1 | 28 | 37.2K | Apr 1996 – Oct 1996 |
| Reilly, Annie et Vir G-2-267299 | Hilcorp Energy Company only | Tom Oconnor (6550) | Refugio | 1 | 28 | 9K | Mar 2012 – Jan 2013 |