| State Tract 12 G-4-139670 | TR Offshore, LLC only | Mesquite Bay (Frio G-1) | Aransas | 1 | 379K | 7.95M | Jan 1993 – May 2025 |
| State Tract 13 G-4-164854 | TR Offshore, LLC only | Mesquite Bay (Frio MF-1) | Aransas | 1 | 357K | 3M | Oct 1996 – May 2025 |
| State Tract 9 G-4-147170 | TR Offshore, LLC only | Mesquite Bay (Frio G-1) | Aransas | 1 | 289K | 5.16M | Oct 1993 – May 2025 |
| St. Charles Co. G-4-280702 | Hilcorp Energy Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 268K | 5.63M | Jun 2016 – Apr 2026 |
| Grant G-4-195215 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 226K | 8.5M | Jan 2002 – Apr 2022 |
| Nine Mile Pt. FLD Consl. G.U. G-4-99731 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 216K | 5.62M | Jan 1993 – Apr 2025 |
| Gibson/Sien Unit G-4-176421 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 211K | 5.89M | Dec 1999 – Mar 2023 |
| Grant "B" G-4-188150 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 205K | 5.38M | Apr 2002 – Aug 2024 |
| Grant "C" G-4-188125 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 194K | 5.29M | Feb 2002 – Dec 2016 |
| St. Charles Co. G-4-270893 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 176K | 11.4M | Jun 2013 – Apr 2026 |
| St. Charles Co. G-4-275311 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 169K | 4.17M | Jul 2014 – Feb 2025 |
| Grant "A" G-4-220144 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 160K | 3.94M | Apr 2006 – Jul 2019 |
| Tatton, V. H. G-4-155754 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 150K | 1.75M | Aug 1995 – Jul 2023 |
| Gibson/Sien G-4-177880 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 130K | 3.67M | Jun 2000 – Jul 2020 |
| Grant "A" G-4-189390 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 121K | 5.21M | Jun 2002 – Mar 2024 |
| St. Charles Co. G-4-157177 | Hilcorp Energy Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 115K | 5.98M | Sep 1995 – Mar 2024 |
| Gibson-Sien "C" G-4-195729 | Cabot Oil & Gas Corporation only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 113K | 2.54M | May 2003 – Jul 2015 |
| Tatton, V. H. G-4-288054 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 105K | 1.73M | Aug 2019 – Apr 2026 |
| Nine Mile Point Field Cons. G-4-225679 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 101K | 2.24M | Dec 2006 – Sep 2024 |
| Gibson & Sien "D" Unit G-4-231272 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 101K | 2.31M | Sep 2007 – Jul 2023 |
| St. Charles Co. G-4-275441 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 92.7K | 5.24M | Oct 2014 – Aug 2016 |
| State Tract 94 G-4-248079 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-B-Frio Cons.) | Aransas | 1 | 91.5K | 2.14M | Dec 2008 – May 2025 |
| State Tract 12 G-4-142964 | Chaparral Energy, L.L.C. only | Mesquite Bay (Frio G-1) | Aransas | 1 | 90.3K | 1.28M | Jan 1993 – May 1996 |
| St. Charles Co. G-4-278180 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 90.1K | 2.32M | Aug 2015 – Nov 2017 |
| State Tract 142 G-4-228944 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 88.4K | 1.95M | Apr 2007 – Jul 2019 |
| Baxter Gibson Sien G-4-137097 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 84.6K | 2.33M | Jan 1993 – Oct 2024 |
| Grant "A" G-4-194381 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 84.3K | 4.23M | Feb 2003 – Dec 2021 |
| State Tract 80 G-4-237417 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (TX Miss C) | Aransas | 1 | 81.3K | 2.82M | Apr 2008 – Jun 2018 |
| Tatton, V. H. G-4-153500 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 80.3K | 1.34M | Feb 1995 – Jun 2010 |
| St. Charles Co. G-4-156513 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 73K | 3.59M | Oct 1995 – Apr 2026 |
| St. Charles Co. G-4-277603 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 68K | 6.04M | Jun 2015 – Apr 2025 |
| Grant "A" G-4-219630 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 61.7K | 2.48M | Apr 2006 – Mar 2023 |
| Sein G-4-243088 | Rincon Petroleum Corporation only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 59.7K | 4.1M | Nov 2008 – Mar 2013 |
| State Tract 279 G-4-164696 | Tema Oil and Gas Company only | Conn Brown Harbor (Frio "C") | Aransas | 1 | 56.5K | 384K | Aug 1997 – Apr 2003 |
| St. Charles Co. G-4-282442 | Hilcorp Energy Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 54.7K | 3.23M | Jun 2017 – Apr 2026 |
| State Tract 96 G-4-204685 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-a, H,upper) | Aransas | 1 | 53.3K | 827K | Oct 2004 – Jan 2024 |
| Tatton, V. H. G-4-152613 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 50K | 537K | Dec 1994 – Apr 2026 |
| Gibson & Sien G-4-233418 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 49.6K | 697K | Oct 2007 – Feb 2024 |
| Nine Mile Pt. Fld. Consl. Unit G-4-151428 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 46.4K | 994K | Sep 1994 – Oct 2024 |
| State Tract 81-82 Unit G-4-221259 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (Frio TX Miss) | Aransas | 1 | 45.4K | 2.51M | Apr 2006 – May 2025 |
| Flinn, et al Unit G-4-267429 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 44.8K | 1.16M | Feb 2012 – Sep 2023 |
| Grant "A" G-4-189394 | Cabot Oil & Gas Corporation only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 41.5K | 863K | May 2002 – Jan 2006 |
| Grant "A" G-4-186062 | Walter Oil & Gas Corporation only | McCampbell (Frio P, Upper) | Aransas | 1 | 37.3K | 949K | Mar 2001 – Feb 2003 |
| State Tract 125 G-4-198587 | Lamar Oil & Gas, Inc. only | Bartell Pass (Frio M) | Aransas | 1 | 37.3K | 1.6M | Sep 2003 – Jun 2024 |
| St. Charles Co. G-4-142096 | Conoco Inc. only | St. Charles ( X) | Aransas | 1 | 37.2K | 1.43M | Jan 1993 – Jun 1995 |
| Cavasso Creek-A- G-4-226035 | T-C Oil Company, LLC only | Cavasso Creek (Frio 8300) | Aransas | 1 | 36.5K | 1.66M | Mar 2007 – Jul 2011 |
| St. Charles Co. G-4-280545 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 35.7K | 1.58M | May 2016 – Apr 2025 |
| Nine Mile Pt.fld.consl. Unit G-4-160285 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 34.2K | 4.6M | Jun 1996 – Sep 2023 |
| Tatton, V. H. G-4-151775 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 34.2K | 340K | Nov 1994 – Apr 2011 |
| McCampbell, W. G., Jr. et Al G-4-48439 | XTO Energy Inc. only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 33.7K | 789K | Jan 1993 – Mar 2010 |