| River Ranch -a-/Williams State U O-2-9301 | T-C Oil Company, LLC only | Anaqua (3100) | Refugio | 12 | 1.99M | 509K | Nov 2008 – Apr 2026 |
| River Ranch -B- State Unit O-2-9357 | T-C Oil Company, LLC only | Anaqua (3100) | Refugio | 6 | 701K | 104K | Nov 2009 – Mar 2021 |
| Clay Pasture -B- State Unit O-2-9381 | T-C Oil Company, LLC only | Anaqua, South (3000) | Refugio | 3 | 539K | 104K | Dec 2009 – Apr 2026 |
| Clay Pasture -B- State Unit O-2-9332 | T-C Oil Company, LLC only | Anaqua (3100) | Refugio | 3 | 207K | 76.4K | Jul 2009 – Apr 2026 |
| Meoc-Mellon-State Unit O-2-11756 | T-C Oil Company, LLC only | Mary Ellen Oconnor (8200) | Refugio | 1 | 112K | 351K | Jun 2019 – Apr 2026 |
| O'Connor-H-Clay Past-State Unit O-2-11509 | T-C Oil Company, LLC only | Anaqua (5300) | Refugio | 1 | 68.9K | 198K | Apr 2018 – May 2024 |
| Meoc-Mellon-State Unit G-2-295806 | T-C Oil Company, LLC only | Mary Ellen O'Connor (8300) | Refugio | 1 | 63.1K | 168K | May 2023 – Apr 2026 |
| Clay Pasture -E- State Unit O-2-12305 | T-C Oil Company, LLC only | McFaddin (3900) | Refugio | 1 | 58.5K | 86.7K | Dec 2021 – Apr 2026 |
| Clay Pasture -B- State Unit O-2-10101 | T-C Oil Company, LLC only | Anaqua (3000) | Refugio | 1 | 56.2K | 17.6K | Jan 2012 – Apr 2026 |
| Roche, K. D. -E- State Oil Unit O-4-3615 | Texas, Les & Co. only | Encino (5900 Sd.) | Refugio | 1 | 38.7K | 20.1K | Jan 1993 – May 2014 |
| Meoc-Mellon-State Unit G-2-292773 | T-C Oil Company, LLC only | Mary Ellen OCONNOR(8100) | Refugio | 1 | 24.6K | 1.29M | Feb 2022 – Oct 2025 |
| Clay Pasture -E- State Unit O-2-12263 | T-C Oil Company, LLC only | Anaqua (4100) | Refugio | 1 | 17.4K | 15K | Aug 2021 – Apr 2026 |
| Heard-State Unit #2 O-2-7641 | CTR Petroleum, Inc. only | Refugio New (3670) | Refugio | 1 | 14.9K | 7.47K | Jan 1993 – Sep 1997 |
| O'Connor, M.V. Estate O-2-6472 | Freeman, James C. only | Greta (Massive Catahoula) | Refugio | 1 | 12.8K | 10K | Jan 1993 – Apr 2000 |
| Clay Pasture -B- State Unit O-2-13103 | T-C Oil Company, LLC only | Anaqua (2960) | Refugio | 1 | 10.5K | 7.6K | May 2025 – Apr 2026 |
| Meoc-Mellon-State Unit G-2-300938 | T-C Oil Company, LLC only | Mary Ellen O'Connor (7750) | Refugio | 1 | 7.47K | 172K | Nov 2025 – Apr 2026 |
| Meoc-Mellon-State Unit G-2-297464 | T-C Oil Company, LLC only | Mary Ellen OCONNOR(8100) | Refugio | 1 | 7.46K | 395K | Jun 2024 – Apr 2026 |
| Ryals Estate -P- G-2-37001 | Eagleford Operating, Inc. only | Refugio Old (5600) | Refugio | 1 | 6.41K | 474K | Jan 1993 – Oct 2014 |
| M.V. O'Connor Estate "E" G-2-255960 | Charro Operating, L.L.C. only | Greta (F-2-A) | Refugio | 1 | 5.33K | 140K | Nov 2009 – Aug 2011 |
| O'Connor, M. V. Estate "C" G-2-224771 | Charro Operating, L.L.C. only | Train Wreck (6000 Sd.) | Refugio | 1 | 4.6K | 635K | Nov 2007 – Jan 2016 |
| Meoc-Mellon-State Unit O-2-12591 | T-C Oil Company, LLC only | Mary Ellen O'Connor (8300) | Refugio | 1 | 4.51K | 9.46K | Mar 2023 – Apr 2023 |
| Collins Estate O-2-6941 | Pat's P & a, Inc. only | Bonnie View, South (8030) | Refugio | 1 | 4.31K | 3.6K | Jan 1993 – Mar 1995 |
| Heard-State Unit #1 O-2-7638 | CTR Petroleum, Inc. only | Refugio Heard (5350) | Refugio | 1 | 4.28K | 8.4K | Jan 1993 – Apr 1996 |
| Heard-State Unit #2 O-2-8683 | CTR Petroleum, Inc. only | Refugio, New (2450) | Refugio | 1 | 1.85K | 15.2K | Dec 2001 – Dec 2004 |
| 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 |
| 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 |
| 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 |
| M. V. O'Connor Estate G-2-254135 | Kebo Oil & Gas, Inc. only | Lake Pasture, West (5900) | Refugio | 1 | 291 | 125K | Sep 2009 – Feb 2011 |
| Heard - State Unit #1 G-2-150704 | CTR Petroleum, Inc. only | Refugio Old (1500) | Refugio | 1 | 0 | 0 | — |
| Heard-State Unit #2 G-2-151027 | CTR Petroleum, Inc. only | Refugio Heard (3550) | Refugio | 1 | 0 | 113K | Sep 1994 – Oct 1999 |
| Heard-State Unit #2 G-2-153708 | CTR Petroleum, Inc. only | Refugio, New (2350) | Refugio | 1 | 0 | 11.7K | Mar 1995 – Nov 1996 |
| Heard-State Unit #2 G-2-162724 | CTR Petroleum, Inc. only | Refugio New (1100) | Refugio | 1 | 0 | 0 | — |
| Heard-State Unit #2 G-2-176508 | CTR Petroleum, Inc. only | Refugio Heard (3100) | Refugio | 1 | 0 | 59.8K | Oct 1999 – Sep 2001 |
| Heard-State Unit #2 G-2-186500 | CTR Petroleum, Inc. only | Refugio, New (2450) | Refugio | 1 | 0 | 1.19K | Nov 2001 – Nov 2001 |
| O'Connor, M. V. Estate G-2-224782 | Charro Operating, L.L.C. only | Wildcat | Refugio | 1 | 0 | 0 | — |
| Clay Pasture -B- State Unit G-2-240609 | T - C Oil Company only | Anaqua (2960) | Refugio | 1 | 0 | 342K | Sep 2008 – Nov 2008 |
| Clay Pasture -B- State Unit G-2-242931 | T-C Oil Company, LLC only | Anaqua (1700) | Refugio | 1 | 0 | 228K | Oct 2008 – Sep 2021 |
| Clay Pasture -B- State Unit G-2-242933 | T-C Oil Company, LLC only | Anaqua (1900) | Refugio | 1 | 0 | 45.7K | Oct 2008 – Nov 2008 |
| Clay Pasture -B- State Unit G-2-244869 | T-C Oil Company, LLC only | Anaqua (3275) | Refugio | 1 | 0 | 0 | — |
| M.V. O'Connor Estate "E" G-2-254192 | Charro Operating, L.L.C. only | Greta (5270) | Refugio | 1 | 0 | 6.48K | Sep 2009 – Oct 2009 |
| Clay Pasture -B- State Unit G-2-299193 | T-C Oil Company, LLC only | Anaqua (2960) | Refugio | 1 | 0 | 892 | Apr 2025 – Apr 2025 |
| Clay Pasture -B- State Unit G-2-300123 | T-C Oil Company, LLC only | Anaqua (2960) | Refugio | 1 | 0 | 44.6K | Sep 2025 – Apr 2026 |
| State Tract 9 G-4-46297 | Atura International, Inc. only | Fulton Beach, N. (B-2) | Refugio | 1 | 0 | 0 | — |
| Ryals, Pearson, Estate O-2-2663 | Eagleford Operating, Inc. only | Refugio Old | Refugio | 1 | 0 | 0 | — |
| Heard-State Unit #2 O-2-7069 | CTR Petroleum, Inc. only | Refugio Heard (Area) | Refugio | 3 | 0 | 0 | — |
| Rogers Estate O-2-7339 | Discovery Petroleum, L.L.C. only | Refugio-Fox (4600) | Refugio | 1 | 0 | 0 | — |
| Ryals, John Estate O-2-7648 | Bayou Company, The only | Refugio Old | Refugio | 1 | 0 | 0 | — |
| Heard State #1 O-2-7772 | CTR Petroleum, Inc. only | Refugio New | Refugio | 2 | 0 | 0 | — |
| River Ranch -a-/Williams State U O-2-9289 | T - C Oil Company only | Wildcat | Refugio | 1 | 0 | 0 | — |
| State Tract 3 O-4-946 | Atura International, Inc. only | Fulton Beach, N. (a-2 Sand) | Refugio | 2 | 0 | 0 | — |