| Ocker Trust G-4-161600 | Diasu Oil & Gas Co., Inc. only | Ocker (B-2) | Aransas | 1 | 6.24K | 386K | Sep 1996 – Apr 2001 |
| State Tract 96 O-4-5614 | Miresco, Inc. only | Copano Bay, S. (FB-a, I-4) | Aransas | 2 | 6.22K | 5.25K | by Jan 1993 – Dec 1993 |
| C.W. Skipper Unit G-4-144385 | Whiting Oil and Gas Corporation only | Estes Cove (C-4) | Aransas | 1 | 6.06K | 298K | Mar 1993 – Nov 2005 |
| Grant "A" G-4-224143 | Millennium Exploration Co. LLC only | McCampbell (Deep Frio Cons.) | Aransas | 1 | 5.92K | 262K | Sep 2006 – Feb 2023 |
| State Tract 80 G-4-287363 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-G, 07) | Aransas | 1 | 5.68K | 513K | Dec 2018 – May 2025 |
| Texas State Tract 188 G-4-49054 | PI Energy, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 5.51K | 337K | by Jan 1993 – Aug 2006 |
| State Tract 278 B G-4-165230 | Tema Oil and Gas Company only | Conn Brown Harbor (Frio "D") | Aransas | 1 | 5.4K | 472K | Sep 1997 – May 2004 |
| South Rockport Gas Unit No. 1 G-4-86319 | PI Energy, Inc. only | Talley Island | Aransas | 1 | 5.15K | 53.3K | by Jan 1993 – Sep 2006 |
| Lone Wolf Unit G-4-254196 | Rincon Petroleum Corporation only | Mud Flats (9550) | Aransas | 1 | 5.07K | 106K | Nov 2009 – Feb 2010 |
| State Tract 113 O-4-6743 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-a, K-3,4) | Aransas | 1 | 5.06K | 28.5K | Feb 2014 – Aug 2023 |
| State Tract 157 G-4-184926 | Lamar Oil & Gas, Inc. only | Nine Mile Point, E. (Frio J-7) | Aransas | 1 | 5.02K | 167K | Jun 2001 – Dec 2005 |
| Heist Oil Unit O-4-12138 | Enco Exploration Company only | Aransas Pass, East (B-3-7) | Aransas | 1 | 4.99K | 1.27K | by Jan 1993 – Jun 1994 |
| T.S.T. 196-197 Unit 1 G-4-124164 | Crest Petroleum, LLC only | Rockport (Frio M-1) | Aransas | 1 | 4.64K | 139K | by Jan 1993 – Nov 2008 |
| Nine Mile Point Consolidated U. G-4-59044 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 4.58K | 777K | by Jan 1993 – Sep 2024 |
| State Tract 277 O-4-12572 | North Central Oil Corp. only | Conn Brown Harbor (Frio "C") | Aransas | 1 | 4.54K | 323K | May 1996 – Jan 1998 |
| State Tract 115 G-4-252161 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-B-Frio Cons.) | Aransas | 1 | 4.51K | 202K | Jun 2009 – Jan 2024 |
| Werland, K. E. O-4-8478 | Mission River Systems, Inc. only | Mud Flats, S. (Stark) | Aransas | 2 | 4.42K | 9 | by Jan 1993 – Jun 2001 |
| Copano Bay State G-4-232417 | Live Oak Reserves, Inc. only | Fulton Beach, W. (5100 Miocene) | Aransas | 1 | 4.2K | 156K | Apr 2007 – Nov 2008 |
| Lone Wolf Unit O-4-13833 | Rincon Petroleum Corporation only | Copano Bay, S. (FB-B, L-2) | Aransas | 1 | 3.94K | 154K | Aug 2013 – Apr 2015 |
| Grant G-4-180219 | Winn Exploration Co., Inc. only | McCampbell (Frio P, Lower) | Aransas | 1 | 3.88K | 106K | Oct 2000 – Sep 2001 |
| State Tract 115 G-4-159794 | Prize Operating Company only | Copano Bay, S. (FB-B, M-11) | Aransas | 1 | 3.84K | 139K | Aug 1996 – Jan 2001 |
| Copano Bay State G-4-176086 | Live Oak Reserves, Inc. only | Fulton Beach, W. (Miocene 4) | Aransas | 1 | 3.75K | 208K | Jan 2000 – Apr 2002 |
| Zeph - Rouquette G-4-169584 | Dominion Oil USA Corp. only | Rockport, West (-I-2) | Aransas | 1 | 3.75K | 275K | Jul 1998 – Apr 2006 |
| Aransas County Airport GU G-4-163305 | Winn Exploration Co., Inc. only | Bartell Pass (Frio N) | Aransas | 1 | 3.71K | 83.4K | Oct 1996 – Feb 1997 |
| State of Texas Unit G-4-9424 | Besco Operating, L.P. only | Blind Pass (Marginulina-Frio) | Aransas | 1 | 3.7K | 375K | by Jan 1993 – May 1996 |
| Fulton Beach G-4-168187 | Western Gulf Oil & Gas, LLC only | Fulton Beach (B-2) | Aransas | 1 | 3.69K | 805K | Apr 1998 – Aug 2011 |
| State Tract 278 B G-4-157741 | North Central Oil Corp. only | Stedman Island (8120 Frio) | Aransas | 1 | 3.66K | 116K | Apr 1996 – Aug 1997 |
| Houston Endowment, Inc. G-4-258353 | White Oak Operating Company LLC only | Copano Bay, S. (FB-a, M-2) | Aransas | 1 | 3.48K | 186K | Dec 2010 – Jul 2013 |
| Nine Mile Point Field Consolidat G-4-40870 | Lamar Oil & Gas, Inc. only | Nine Mile Point (Consol. Fld.) | Aransas | 1 | 3.37K | 1.77M | by Jan 1993 – Jul 2023 |
| State Tract 113 O-4-6752 | Miresco, Inc. only | Copano Bay, S. (FB-a, I-4) | Aransas | 1 | 3.37K | 3.39K | by Jan 1993 – Dec 1993 |
| Newberry Unit G-4-142906 | Whiting Oil and Gas Corporation only | Estes Cove (C-4) | Aransas | 1 | 3.37K | 199K | by Jan 1993 – Nov 2005 |
| State Tract 95 & 96 G-4-146897 | Prize Operating Company only | Copano Bay, S. (FB-a, J-3) | Aransas | 1 | 3.24K | 1.79M | Sep 1993 – May 1999 |
| State Tract 93 O-4-12997 | Lamar Oil & Gas, Inc. only | Copano Bay, S. (FB-B, M- 7) | Aransas | 1 | 3.11K | 22.2K | Feb 2001 – Feb 2019 |
| Texas State Tract 196-197 Unit 2 G-4-86475 | PI Energy, Inc. only | Talley Island | Aransas | 1 | 3.08K | 52.4K | by Jan 1993 – Sep 2006 |
| Skipper, C.W. Unit G-4-135123 | Genesis Producing Company only | Estes Cove (7300) | Aransas | 1 | 2.93K | 14.5K | by Jan 1993 – Feb 1993 |
| State Tract 125 O-4-13046 | Lamar Oil & Gas, Inc. only | Bartell Pass (Frio M) | Aransas | 1 | 2.86K | 110K | Apr 2001 – Sep 2003 |
| Copano Bay State O-4-961 | Live Oak Reserves, Inc. only | Fulton Beach, West (A-2) | Aransas | 1 | 2.82K | 8.22K | by Jan 1993 – Aug 1994 |
| Cavasso Creek -A- G-4-254875 | T - C Oil Company only | Cavasso Creek (7600, Up.) | Aransas | 1 | 2.78K | 81K | Feb 2010 – May 2010 |
| Copano Bay State O-4-969 | Tryall, Inc only | Fulton Beach, West (E) | Aransas | 2 | 2.39K | 1.62K | by Jan 1993 – Dec 1994 |
| Bailey, Travis G-4-97244 | Samson Lone Star LP only | Rockport, West (-O-, Upper) | Aransas | 1 | 2.38K | 107K | by Jan 1993 – Jan 1997 |
| Encinos O-4-13707 | T-C Oil Company, LLC only | Cavasso Creek (8000) | Aransas | 1 | 2.37K | 108K | Jan 2012 – Jul 2013 |
| St. Charles Co. G-4-274788 | Hilcorp Energy Company only | St. Charles (Frio Cons., Upper) | Aransas | 1 | 2.29K | 250K | May 2014 – Apr 2015 |
| Glass, A.C. G-4-143929 | Harvey Brothers Oil & Gas only | Fulton Beach (B-2) | Aransas | 1 | 2.28K | 207K | by Jan 1993 – Apr 1995 |
| Copano Bay State G-4-191684 | Live Oak Reserves, Inc. only | Fulton Beach, W. (Miocene 2) | Aransas | 1 | 2.11K | 228K | May 2002 – Aug 2006 |
| State Tract 277 G-4-168356 | Tema Oil and Gas Company only | Conn Brown Harbor (Frio "C") | Aransas | 1 | 2.07K | 136K | Mar 1998 – Jul 2007 |
| State Tract 279 G-4-195162 | Tema Oil and Gas Company only | Conn Brown Harbor (Frio "D") | Aransas | 1 | 2.06K | 375K | Jun 2003 – Oct 2016 |
| St. Charles Co. G-4-149924 | Conoco Inc. only | St. Charles, N. (B-1) | Aransas | 1 | 1.97K | 71.7K | Jun 1994 – Sep 1994 |
| Spencer Kent Crane G-4-248558 | Wallis Energy, Inc. only | Fulton Beach (B-3-8) | Aransas | 1 | 1.84K | 421K | Dec 2008 – Jun 2026 |
| Copano Bay State O-4-968 | Tryall, Inc only | Fulton Beach, West (D) | Aransas | 2 | 1.82K | 32.3K | by Jan 1993 – Dec 1994 |
| Encinos G-4-262330 | T-C Oil Company, LLC only | Cavasso Creek (Frio 8300, W) | Aransas | 1 | 1.74K | 37.5K | Aug 2011 – Jan 2012 |