| Tatton, V.H. O-4-12738 | Wagner Oil Company | Virginia (Frio Cons.) | 8 | 381K | 4.01M | Aug 1997 – Jul 2026 |
| State Tract 12 O-4-12613 | TR Offshore, LLC | Mesquite Bay (Frio E) | 1 | 248K | 881K | Jul 1996 – Jul 2026 |
| Newberry Unit O-4-11761 | Whiting Oil and Gas Corporation | Estes Cove (7300) | 2 | 211K | 325K | Jan 1993 – May 2013 |
| Tatton, V.H. O-4-12049 | Pennzoil Exploration & Prod. Co. | Virginia (9900) | 5 | 197K | 424K | Jan 1993 – Jun 1998 |
| State Tract 279 O-4-11835 | Tema Oil and Gas Company | Conn Brown Harbor (Frio "D") | 3 | 186K | 1.21M | Jan 1993 – Aug 2010 |
| Copano Bay State O-4-12391 | Tryall, Inc | Fulton Beach, West (A-1) | 5 | 170K | 346K | Aug 1994 – Jul 2026 |
| Schnitz, Olivia O-4-12863 | Magnum Producing, LP | Estes Cove (F-1 FB-B) | 1 | 149K | 230K | Sep 1998 – Nov 2023 |
| State Tract 19 O-4-13678 | TR Offshore, LLC | Mesquite Bay (Frio E) | 1 | 135K | 160K | Nov 2010 – Jul 2026 |
| State Tract 280 O-4-11751 | Tema Oil and Gas Company | Conn Brown Harbor (Frio "D") | 1 | 131K | 446K | Jan 1993 – Apr 2014 |
| Tatton, V. H. O-4-9581 | Pennzoil Exploration & Prod. Co. | Virginia (10,500 Sd.) | 2 | 90.5K | 193K | Jan 1993 – Jun 1998 |
| State Tract 84 O-4-9935 | Lamar Oil & Gas, Inc. | Goose Island (D-1) | 1 | 80.4K | 154K | Jan 1993 – Jul 2026 |
| State Tract 94 O-4-13468 | Lamar Oil & Gas, Inc. | Copano Bay, S. (FB-B, M- 4) | 1 | 79.3K | 563K | Mar 2008 – Jul 2026 |
| Gibson-Sien "C" O-4-13965 | Texron Operating, LLC | McCampbell (Deep Frio Cons.) | 1 | 68.5K | 346K | Aug 2015 – Jul 2026 |
| State Tract 96 O-4-12291 | Cimarex Energy Co. of Colorado | Copano Bay, S. (FB-a, H A,lo.) | 1 | 59.5K | 396K | Dec 1993 – Jul 2009 |
| State Tract 278 B O-4-12334 | North Central Oil Corp. | Conn Brown Harbor (Frio "E" FB-B | 1 | 59.2K | 221K | Feb 1994 – Apr 2001 |
| State Tracts 95 & 96 O-4-12176 | Lamar Oil & Gas, Inc. | Copano Bay, S. (FB-a, H,lower) | 1 | 58.6K | 222K | Feb 1993 – Sep 2023 |
| Copano Bay State O-4-13557 | Tryall, Inc | Fulton Beach, West (LWR G) | 1 | 58.1K | 98.2K | Sep 2008 – Jul 2026 |
| Newberry Unit O-4-12113 | Whiting Oil and Gas Corporation | Estes Cove (C-1) | 1 | 58K | 278K | Jan 1993 – Apr 2013 |
| State Tract 169 O-4-8884 | Petro-Guard Production,l.l.c. | Nine Mile Point, West (P-1) | 1 | 55.8K | 33.8K | Jan 1993 – Mar 2008 |
| Tatton, V. H. O-4-9227 | Pennzoil Exploration & Prod. Co. | Virginia (10,800) | 3 | 55.4K | 254K | Jan 1993 – Jun 1998 |
| Skipper, C.W. Unit O-4-12162 | Whiting Oil and Gas Corporation | Estes Cove (7300) | 1 | 54K | 174K | Jan 1993 – May 2013 |
| State Tract 279 O-4-13154 | Tema Oil and Gas Company | Conn Brown Harbor (Frio "C") | 1 | 53.1K | 423K | May 2003 – Apr 2018 |
| Flinn, et al Unit O-4-13446 | Cabot Oil & Gas Corporation | McCampbell (Deep Frio Cons.) | 1 | 51.5K | 494K | Jul 2007 – Jul 2013 |
| Tatton, V. H. O-4-6428 | Pennzoil Exploration & Prod. Co. | Virginia (10,400) | 4 | 50K | 118K | Jan 1993 – Jun 1998 |
| Sultenfuss, H. A. O-4-11603 | Tidewater Minerals Corporation | Estes Cove (E-1, Fault Block B) | 1 | 41.3K | 97 | Jan 1993 – Jul 2026 |
| State Tract 84 O-4-9247 | Lamar Oil & Gas, Inc. | Goose Island (C SD, Lo.) | 2 | 40.9K | 46.1K | Jan 1993 – Jul 2026 |
| Sexton-Mullan Unit O-4-12076 | Whiting Oil and Gas Corporation | Estes Cove (E-3) | 1 | 39.9K | 57.2K | Jan 1993 – Mar 2013 |
| State Tract 279 O-4-12048 | North Central Oil Corp. | Conn Brown Harbor (Frio "C") | 1 | 37.5K | 916K | Jan 1993 – Dec 1997 |
| St. Charles Co. O-4-13798 | Hilcorp Energy Company | St. Charles (B-1) | 2 | 36.2K | 62.6K | Jul 2013 – Jul 2026 |
| Barber, R.R. O-4-9472 | Tare Resources, LLC | Aransas Pass, East (7930) | 1 | 32.5K | 23 | Jan 1993 – Jul 2026 |
| Conn-Brown-State-G Sand Unit O-4-13258 | Tema Oil and Gas Company | Conn Brown Harbor (Frio "E" FB-B | 1 | 32.1K | 986K | Sep 2004 – Apr 2018 |
| Spencer-Kent-Crane O-4-849 | Omega Energy Corp. | Fulton Beach (a-4 Miocene) | 3 | 29.2K | 11K | Jan 1993 – Aug 2009 |
| Cavasso Creek -A- O-4-13779 | T-C Oil Company, LLC | Cavasso Creek (8000) | 1 | 25.9K | 47K | Dec 2011 – Nov 2014 |
| City of Aransas Pass O-4-11553 | Tema Oil and Gas Company | Conn Brown Harbor (Frio "D") | 2 | 23.3K | 100K | Jan 1993 – Apr 2018 |
| Houston Endowment Inc. O-4-13848 | White Oak Operating Company LLC | Copano Bay, S. (FB-a Cons. G-L) | 1 | 22.5K | 57.7K | Aug 2013 – Jun 2015 |
| State Tract 83 O-4-8748 | Hunt Oil Company | Goose Island (C SD, Lo.) | 3 | 22.5K | 27.9K | Jan 1993 – Feb 1997 |
| State Tract 95 & 96 O-4-12847 | Lamar Oil & Gas, Inc. | Copano Bay, S. (FB-a, J-3) | 1 | 21.3K | 99.6K | Jan 1999 – Jul 2026 |
| Spencer-Kent-Crane O-4-13568 | Wallis Energy, Inc. | Fulton Beach (C-1-2-3 Sand) | 3 | 19.8K | 4.93K | Nov 2008 – Jul 2026 |
| Fulton Beach /C Sand/ Unit O-4-6326 | Omega Energy, LLC | Fulton Beach (C-1-2-3 Sand) | 3 | 19.5K | 28K | Jan 1993 – Jul 2026 |
| Brown, Polly O-4-11894 | Magnum Producing & Operating Co. | Estes Cove (E-4) | 1 | 19.4K | 29.1K | Jan 1993 – Jul 1998 |
| Schnitz, Olivia O-4-12083 | Magnum Producing & Operating Co. | Estes Cove (E-3) | 1 | 19.3K | 21.7K | Jan 1993 – Oct 1999 |
| Heist Oil Unit O-4-12421 | Omega Energy, LLC | Aransas Pass, East (E-1-2, S.) | 1 | 18.6K | 65.7K | Jan 1995 – Jul 2026 |
| State Tract 115 O-4-12996 | Genesis Producing Company, L.P. | Copano Bay, S. (FB-B, M-11) | 1 | 17.3K | 45.3K | Feb 2001 – Dec 2017 |
| State Tract 44 Unit O-2-10230 | Mustang E&P LLC | Zoller (10,000) | 2 | 16.4K | 29.7K | Apr 2012 – Jul 2026 |
| Aransas County Airport O-4-12684 | Winn Exploration Co., Inc. | Fulton Beach, NE. (Frio D-1) | 1 | 13.2K | 0 | Apr 1997 – Oct 1998 |
| Tatton, V.H. O-4-9576 | Pennzoil Exploration & Prod. Co. | Virginia ( 9,050) | 1 | 12.2K | 75.1K | Jan 1993 – Feb 1995 |
| State Tract 169 O-4-13009 | Lamar Oil & Gas, Inc. | Nine Mile Point, West (Frio G) | 1 | 11.7K | 230K | Dec 2000 – Jun 2004 |
| State Tract 44 Unit O-2-10896 | Magnum Producing, LP | Zoller (11,000) | 1 | 11.7K | 34.1K | Apr 2014 – Jul 2017 |
| Roark O-4-13335 | Cabot Oil & Gas Corporation | Aransas Pass, East (D-4) | 1 | 11.2K | 143K | Mar 2005 – Jul 2013 |
| Tatton, V. H. O-4-9599 | Pennzoil Exploration & Prod. Co. | Virginia ( 9,700) | 2 | 11.1K | 157K | Jan 1993 – Jan 1995 |