| State Tract 95 & 96 O-4-12847 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-a, J-3) | Aransas | 1 | 21.3K | 99.6K | Jul 1999 – Jan 2022 |
| Tatton, V. H. G-4-36287 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 20.2K | 181K | Feb 1998 – Aug 2026 |
| Spencer-Kent-Crane O-4-13568 | Wallis Energy, Inc. only | Fulton Beach (C-1-2-3 Sand) | Aransas | 3 | 19.8K | 4.93K | Mar 2009 – Jun 2026 |
| Fulton Beach /C Sand/ Unit O-4-6326 | Omega Energy, LLC only | Fulton Beach (C-1-2-3 Sand) | Aransas | 3 | 19.5K | 28K | by Jan 1993 – Jul 2006 |
| Brown, Polly O-4-11894 | Magnum Producing & Operating Co. only | Estes Cove (E-4) | Aransas | 1 | 19.4K | 29.1K | by Jan 1993 – Dec 1997 |
| Schnitz, Olivia O-4-12083 | Magnum Producing & Operating Co. only | Estes Cove (E-3) | Aransas | 1 | 19.3K | 21.7K | by Jan 1993 – Aug 1997 |
| Grant "A" G-4-216772 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 19.3K | 941K | Jan 2006 – Oct 2012 |
| Heist Oil Unit O-4-12421 | Omega Energy, LLC only | Aransas Pass, East (E-1-2, S.) | Aransas | 1 | 18.6K | 65.7K | Jan 1995 – Aug 2001 |
| State of Texas Unit G-4-9423 | Besco Operating, L.P. only | Blind Pass (Marginulina-Frio) | Aransas | 1 | 18.4K | 1.73M | Dec 1995 – Feb 2025 |
| Tatton, V. H. G-4-166871 | Wagner Oil Company only | Virginia (Frio Cons.) | Aransas | 1 | 17.5K | 373K | Jan 1998 – Aug 2026 |
| State Tract 115 O-4-12996 | Genesis Producing Company, L.P. only | Copano Bay, S. (FB-B, M-11) | Aransas | 1 | 17.3K | 45.3K | Feb 2001 – May 2008 |
| St. Charles Co. G-4-280990 | Hilcorp Energy Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 16.9K | 548K | Jul 2016 – May 2020 |
| State Tract 44 Unit O-2-10230 | Mustang E&P LLC only | Zoller (10,000) | Aransas | 2 | 16.4K | 29.7K | Apr 2012 – Jul 2025 |
| St. Charles Ranch G-4-141771 | Conocophillips Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 16.2K | 1.31M | by Jan 1993 – May 2003 |
| Davis Gas Unit G-4-226389 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 14.7K | 397K | Mar 2007 – Jul 2020 |
| Houston Endowment Inc G-4-232986 | Carrizo Oil & Gas, Inc. only | Mud Flats (9000) | Aransas | 1 | 13.8K | 365K | Nov 2007 – Nov 2010 |
| Grant "A" G-4-233992 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 13.4K | 909K | Jul 2007 – Feb 2024 |
| Davis Gas Unit G-4-226387 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 13.4K | 243K | Mar 2007 – Feb 2023 |
| State Tract 125 G-4-142214 | Lamar Oil & Gas, Inc. only | Bartell Pass (Frio G) | Aransas | 1 | 13.4K | 683K | by Jan 1993 – Feb 1997 |
| Aransas County Airport O-4-12684 | Winn Exploration Co., Inc. only | Fulton Beach, NE. (Frio D-1) | Aransas | 1 | 13.2K | 0 | Apr 1997 – Jan 1998 |
| St. Charles Co. G-4-146751 | Conoco Inc. only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 12.8K | 445K | Oct 1993 – Dec 2001 |
| St. Charles Co G-4-294474 | Hilcorp Energy Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 12.8K | 316K | Nov 2022 – Sep 2025 |
| State Tract 81 G-4-115081 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-D, 03) | Aransas | 1 | 12.3K | 1M | Jun 1993 – Mar 2006 |
| St. Charles Ranch Company G-4-172783 | Conoco Inc. only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 12.2K | 179K | Nov 1998 – Aug 1999 |
| Tatton, V.H. O-4-9576 | Pennzoil Exploration & Prod. Co. only | Virginia ( 9,050) | Aransas | 1 | 12.2K | 75.1K | by Jan 1993 – Nov 1994 |
| Nine Mile Point Field Cons. G-4-249386 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 11.9K | 389K | Jan 2009 – Jul 2024 |
| St. Charles Ranch G-4-146907 | Conocophillips Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 11.9K | 576K | Oct 1993 – May 2004 |
| State Tract 62 G-4-277365 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-G, 04) | Aransas | 1 | 11.8K | 337K | Mar 2015 – Jun 2017 |
| State Tract 169 O-4-13009 | Lamar Oil & Gas, Inc. only | Nine Mile Point, West (Frio G) | Aransas | 1 | 11.7K | 230K | Jan 2001 – Feb 2004 |
| State Tract 44 Unit O-2-10896 | Magnum Producing, LP only | Zoller (11,000) | Aransas | 1 | 11.7K | 34.1K | Apr 2014 – Mar 2017 |
| Davis Gas Unit G-4-224982 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 11.5K | 662K | Nov 2006 – Jul 2014 |
| Roark O-4-13335 | Cabot Oil & Gas Corporation only | Aransas Pass, East (D-4) | Aransas | 1 | 11.2K | 143K | Jan 2006 – Mar 2010 |
| Tatton, V. H. O-4-9599 | Pennzoil Exploration & Prod. Co. only | Virginia ( 9,700) | Aransas | 2 | 11.1K | 157K | by Jan 1993 – Oct 1994 |
| Tatton, V.H. O-4-12282 | Pennzoil Exploration & Prod. Co. only | Virginia (10,200) | Aransas | 1 | 11.1K | 19.6K | Nov 1993 – Jan 1995 |
| State Tract 125 O-4-12646 | Lamar Oil & Gas, Inc. only | Bartell Pass (Frio D) | Aransas | 1 | 10.2K | 5.85K | Mar 1997 – Mar 2001 |
| State Tract 113 O-4-6737 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-a, J-3) | Aransas | 1 | 9.87K | 61.7K | by Jan 1993 – Nov 2022 |
| State Tract 142-154 G-4-287714 | Lamar Oil & Gas, Inc. only | Nine Mile Point (I-7) | Aransas | 1 | 9.55K | 156K | Aug 2019 – Jun 2024 |
| Nine Mile Point Field Consolidat G-4-38806 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 9.43K | 939K | Feb 1993 – Sep 2024 |
| Talley Island G-4-247785 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 8.39K | 318K | Jan 2009 – Jul 2024 |
| Lone Wolf Unit G-4-256728 | Rincon Petroleum Corporation only | Mud Flats (Frio Deep) | Aransas | 1 | 8.07K | 257K | Jun 2010 – Jul 2013 |
| Nine Mile Point Consolidated GU G-4-82781 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 7.65K | 1.71M | by Jan 1993 – May 2025 |
| McCampbell G-4-138167 | Global Natural Resources Corp. only | Aransas Pass, East (D-4) | Aransas | 1 | 7.39K | 287K | by Jan 1993 – Sep 1997 |
| Rockport G-4-208827 | Kebo Oil & Gas, Inc. only | Rockport, West (-H-, Upper) | Aransas | 1 | 7.38K | 219K | Jan 2005 – May 2006 |
| Cavasso Creek -A- O-4-13691 | T-C Oil Company, LLC only | Cavasso Creek (7600, Up.) | Aransas | 1 | 7.35K | 15.7K | Aug 2011 – Feb 2014 |
| Texas State Tract 143 G-4-45176 | Petro-Hunt, L.L.C. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 7.31K | 1.98M | by Jan 1993 – Sep 2012 |
| Bailey, Travis "A" G-4-121766 | Pogo Producing Company LLC only | Rockport, West (K-4) | Aransas | 1 | 7.1K | 325K | Jun 2001 – Jun 2005 |
| Copano Bay State G-4-147015 | Live Oak Reserves, Inc. only | Fulton Beach, W. (5100 Miocene) | Aransas | 1 | 6.84K | 914K | Oct 1993 – Oct 1999 |
| Copano Bay State G-4-159878 | Tryall, Inc only | Fulton Beach, West (A-1) | Aransas | 1 | 6.83K | 157K | Aug 1996 – Oct 2014 |
| State Tract 96 G-4-35835 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-a, H,middle) | Aransas | 1 | 6.52K | 356K | by Jan 1993 – Apr 2016 |
| St. Charles Co. G-4-146820 | Conocophillips Company only | St. Charles (Frio Cons., Lower) | Aransas | 1 | 6.38K | 344K | Sep 1993 – May 2004 |