| Block 697-S #142-603-30276 | Great Bay Operations, LLC only | Matgrda IS-SB | Not on schedule | 5,500 | Feb 23, 2011 | 1 | — |
| State Tract 707-S #1 U42-603-30004 | Gulf Energy Exploration Corp. only | Matgrda IS-SBSherman Offshore (3900) | Temporarily abandonedGas | 4,350 | Dec 29, 2008 | 1 | — |
| State Tract 567-S #142-603-30275 | Sanchez Oil & Gas Corporation only | Matgrda IS-SB | Not on schedule | 9,500 | Oct 4, 2008 | 1 | — |
| S.T. 759-S S/2 #1__42-603-30274 | — | Matgrda IS-SBWildcat | Plugged | 7,000 | May 14, 2008 | 1 | — |
| State Tract 824-S #242-603-30271 | Llog Exploration Texas L.P. only | Matgrda IS-SBMI 824-S (MH-2 Miocene) | PluggedGas | 10,593 | Feb 22, 2008 | 6 | Dec 2008 |
| State Tract 834-S #142-603-30268 | Llog Exploration Texas L.P. only | Matgrda IS-SBMI 824-S (MH-2 Miocene) | PluggedGas | 9,607 | May 10, 2006 | 6 | Jan 2008 |
| State Tract 839-S #142-603-30273 | Llog Exploration Texas L.P. only | Matgrda IS-SBMI 824-S (MH-2 Miocene) | PluggedGas | 10,200 | Nov 30, 2005 | 2 | Feb 2009 |
| State Tract 806-S #142-603-30265 | Walter Oil & Gas Corporation only | Matgrda IS-SBMatagorda 806 (Frio 11100) | PluggedGas | 12,500 | Sep 19, 2005 | 3 | Jul 2011 |
| State Tract 824-S #142-603-30267 | Llog Exploration Texas L.P. only | Matgrda IS-SBMI 824-S (MH-2 Miocene) | PluggedGas | 10,752 | Jul 8, 2004 | 2 | Mar 2008 |
| State Tract 823-S (M-103787) #142-603-30272 | Llog Exploration Texas L.P. only | Matgrda IS-SBMI 824-S (MH-2 Miocene) | PluggedGas | 9,950 | May 28, 2004 | 1 | Jun 2008 |
| State Tract 840-S #342-603-30215 | Forest Oil Corporation only | Matgrda IS-SBClear S. (Frio 9500) | PluggedGas | 12,000 | Aug 8, 2003 | 6 | Oct 2001 |
| State Tract 828-S #142-603-30266 | Llog Exploration Texas, L.P. only | Matgrda IS-SB | Not on schedule | 4,700 | Aug 13, 2002 | 1 | — |
| State Tract 839-S #142-603-30270 | Gryphon Exploration Company only | Matgrda IS-SB | Not on schedule | 11,000 | Jul 17, 2002 | 2 | — |
| State of Texas Block 582-S #5-L42-603-30261 | Vamos Oil & Gas LLC only | Matgrda IS-SBMatagorda Island BLK.582-S(m-6) | Shut inGas | 7,751 | Aug 24, 2000 | 3 | Aug 2007 |
| State Tract 840-S #5-U42-603-30220 | Forest Oil Corporation only | Matgrda IS-SBClear S. (Mio. 8600) | PluggedGas | 12,000 | Apr 30, 1999 | 4 | May 2003 |
| SL 790-S #142-603-30264 | — | Matgrda IS-SBEast Blind Pass | Plugged | 11,000 | Mar 24, 1999 | 1 | — |
| State Tract 567-S #142-603-30263 | Southern Mineral Corporation only | Matgrda IS-SB | Not on schedule | 4,500 | Sep 2, 1998 | 1 | — |
| State of Texas Block 582-S #742-603-30262 | Sharpe Energy Company only | Matgrda IS-SB | Not on schedule | 9,000 | Jul 21, 1998 | 1 | — |
| State Tract 705 Gas Unit #142-603-30260 | Transtexas Gas Corporation only | Matgrda IS-SB | Not on schedule | 15,000 | Sep 26, 1997 | 1 | — |
| State of Texas Block 582-S #442-603-30119 | Vamos Oil & Gas LLC only | Matgrda IS-SBMatagorda Island BLK 582-S (23) | Temporarily abandonedGas | 5,110 | May 30, 1997 | 3 | Apr 2000 |
| State Tract 833-S #1 R42-603-30198 | Forest Oil Corporation only | Matgrda IS-SBClear South (Frio 9200) | PluggedGas | 13,000 | Apr 4, 1996 | 5 | Oct 2001 |
| State Tract 708-S #5-T42-603-30252 | Gulf Energy Exploration Corp. only | Matgrda IS-SBSherman Offshore (2000) | PluggedGas | 5,000 | Mar 13, 1995 | 5 | May 1996 |
| State Tract 833-S #342-603-00004 | Forest Oil Corporation only | Matgrda IS-SBClear S. (Mio. 8600) | PluggedGas | 12,000 | Nov 1, 1994 | 4 | Mar 1997 |
| State Tract 720-S #2-L42-603-30249 | Gulf Energy Exploration Corp. only | Matgrda IS-SBSherman Offshore W. (4000) | ActiveGas | 6,450 | Nov 10, 1993 | 2 | Jun 2013 |
| State Tract 707-S #542-603-30238 | American Coastal Energy Inc. only | Matgrda IS-SBSherman Offshore (1600) | PluggedGas | 5,000 | Oct 7, 1993 | 4 | May 1994 |
| State Tract 834-S #1 L42-603-30125 | Forest Oil Corporation only | Matgrda IS-SBClear (Miocene 6830) | PluggedOil | 7,300 | Jul 9, 1993 | 2 | Jan 1995 |
| State Tract 818-S #142-603-30203 | Forest Oil Corporation only | Matgrda IS-SBClear N. (Miocene 6270) | PluggedOil | 8,000 | Mar 23, 1993 | 4 | Nov 1996 |
| State Tract 826-S #1AU42-603-30202 | Corpus Christi Oil & Gas Co. only | Matgrda IS-SBClear North (Miocene 6960) | PluggedGas | 8,000 | Apr 23, 1991 | 5 | — |
| State Tract 835-S #242-603-30259 | — | Matgrda IS-SBClear | Plugged | 7,500 | Jan 2, 1991 | 1 | — |
| State Tract 845-S M-77220 #2 U42-603-30147 | Choctaw II Oil & Gas Ltd. only | Matgrda IS-SBMatagorda Isl. BLK 721-L (13) | PluggedOil | 7,432 | Dec 27, 1990 | 2 | Dec 1998 |
| State Tract 851-S (M-77221) #142-603-30146 | Choctaw II Oil & Gas Ltd. only | Matgrda IS-SBMatagorda Isl. BLK 721-L (15) | PluggedOil | 7,430 | Dec 20, 1990 | 2 | Feb 1994 |
| Matagorda Island St 828S #142-603-30258 | BHP Petroleum (Americas) Inc. only | Matgrda IS-SB | Not on schedule | 12,000 | May 29, 1990 | 1 | — |
| Matagorda Island St 824S #1__42-603-30257 | — | Matgrda IS-SBWildcat | Plugged | 12,000 | Jan 16, 1990 | 1 | — |
| Matagorda Island St 850 #1__42-603-30256 | — | Matgrda IS-SBWildcat | Plugged | 15,890 | Dec 11, 1989 | 1 | — |
| State Tract 840-S #4 L42-603-30219 | Corpus Christi Oil & Gas Co. only | Matgrda IS-SBClear South (Frio 9850) | PluggedGas | 12,000 | Aug 30, 1989 | 2 | — |
| State Tract 844-S #1 L42-603-30255 | Forest Oil Corporation only | Matgrda IS-SBClear South (Frio 9200) | PluggedGas | 12,000 | Aug 9, 1989 | 2 | Jan 2001 |
| State Tract 719-S #1 U42-603-30254 | Gulf Energy Exploration Corp. only | Matgrda IS-SBSherman Offshore W.(1700 Mio.) | PluggedGas | 6,000 | Jul 13, 1989 | 3 | Mar 2014 |
| State Tract 675-S #1__42-603-30253 | — | Matgrda IS-SBWildcat | Plugged | 6,500 | Jun 21, 1988 | 1 | — |
| State Tract 622-S #142-603-30251 | Conquest Exploration Company only | Matgrda IS-SB | Not on schedule | 8,500 | Oct 14, 1987 | 1 | — |
| State Tract 840-S #642-603-30250 | Corpus Christi Oil & Gas Co. only | Matgrda IS-SB | Not on schedule | 12,000 | Aug 25, 1987 | 2 | — |
| State Tract 581-S #142-603-30248 | Cliffs Exploration Company only | Matgrda IS-SB | Not on schedule | 6,500 | Oct 3, 1986 | 1 | — |
| State Tract 721-S #142-603-30006 | EOG Resources Inc. only | Matgrda IS-SBSherman Offshore (2900 A) | PluggedGas | 6,087 | Jun 20, 1986 | 1 | Mar 2014 |
| State Tract 806-S SL 89442 #1__42-603-30247 | — | Matgrda IS-SBWildcat | Plugged | 7,500 | Jun 11, 1986 | 1 | — |
| State Tract 708-S #1 U42-603-30007 | Corpus Christi Oil & Gas Co. only | Matgrda IS-SBSherman Offshore (3800) | PluggedGas | 5,898 | Feb 7, 1986 | 1 | — |
| S. T. 611-S #142-603-30245 | Heritage Operating Co., Inc. The only | Matgrda IS-SB | Not on schedule | 6,800 | Dec 31, 1984 | 1 | — |
| State Tract 841-S #2__42-603-30243 | — | Matgrda IS-SBWildcat Above 7200 | Plugged | 7,200 | Nov 13, 1984 | 1 | — |
| State Tract 702-S #242-603-30240 | — | Matgrda IS-SBSteamboat Pass S. | Plugged | 7,000 | Jul 2, 1984 | 1 | — |
| State Tract 640-S #142-603-30237 | — | Matgrda IS-SBWildcat | Plugged | 8,400 | Mar 12, 1984 | 1 | — |
| St. Tract 705-S #142-603-30236 | Texoma Production Company only | Matgrda IS-SB | Not on schedule | 8,000 | Dec 22, 1983 | 1 | — |
| St. Tract 706-S #242-603-30235 | Texoma Production Company only | Matgrda IS-SB | Not on schedule | 10,000 | Dec 8, 1983 | 1 | — |