| State Tract 659-L NW/4 O-2-6468 | White Marlin Operating Co, LLC only | Matagorda Block 629 (4450 SD) | Matgrda IS-LB | 3 | 1.76M | 204K | Jan 1993 – Sep 2025 |
| State Lease 629-L SW/4 O-2-6488 | White Marlin Operating Co, LLC only | Matagorda Block 629 (4450 SD) | Matgrda IS-LB | 3 | 1.4M | 255K | Jan 1993 – Dec 2024 |
| S.T. 560-L (SW) Unit O-2-9427 | Hall-Houston Expl. II, L.P. only | Matagorda 560-L (7250 Sand) | Matgrda IS-LB | 1 | 425K | 1.04M | Jul 2009 – Jul 2012 |
| State Tract 845-S M-77220 O-4-11891 | Choctaw II Oil & Gas, Ltd. only | Matagorda Isl. BLK 721-L (15) | Matgrda IS-LB | 2 | 290K | 93.1K | Jan 1993 – Dec 1998 |
| State Tract 562-L O-2-7602 | Tri-Union Development Corp. only | Matagorda Block 562-L (6470) | Matgrda IS-LB | 1 | 212K | 193K | Jan 1993 – Sep 1999 |
| S.T. 560-L (SW) Unit O-2-10406 | Hall-Houston Expl. II, L.P. only | Matagorda Block 560-L (6900) | Matgrda IS-LB | 1 | 192K | 199K | Jul 2012 – Mar 2015 |
| Matagorda Island 519-L Gas Unit G-3-184382 | Fieldwood Energy LLC only | Matagorda Isl. BLK 519-L (15600) | Matgrda IS-LB | 1 | 92.7K | 52.5M | Aug 2000 – Aug 2017 |
| State Tract 520-L, NW/4 G-3-70868 | TR Offshore, LLC only | El Gordo (Miocene) | Matgrda IS-LB | 1 | 91.8K | 14M | Jan 1993 – Oct 2009 |
| State Tract 630-L, NW/4 O-2-6429 | Fairways Offshore Expl., Inc. only | Block 630-L (5200) | Matgrda IS-LB | 1 | 80.3K | 6 | Jan 1993 – Jul 1996 |
| State Tract 721-L G-4-193234 | Gryphon Exploration Company only | Alexandre (Cib Haz 3) | Matgrda IS-LB | 1 | 78.7K | 4.84M | Dec 2002 – Nov 2004 |
| Matagorda Island 519-L Gas Unit G-3-119123 | Fieldwood Energy LLC only | Matagorda Isl. BLK 519-L (15600) | Matgrda IS-LB | 1 | 75.9K | 47.8M | Jan 1993 – Jan 2000 |
| S.T. 560-L (SW) Unit O-2-9342 | Hall-Houston Expl. II, L.P. only | Wildcat | Matgrda IS-LB | 2 | 75K | 924K | Jul 2009 – Apr 2010 |
| Matagorda Island 519-L Gas Unit G-3-109101 | Fieldwood Energy LLC only | Matagorda Isl. BLK 519-L (15600) | Matgrda IS-LB | 1 | 72.7K | 71.1M | Jan 1993 – Apr 2014 |
| State Tract 631L G-2-226392 | XTO Offshore Inc. only | MI 631L (Rob. L21) | Matgrda IS-LB | 1 | 72.6K | 279K | Nov 2006 – Nov 2009 |
| State Tract 563-L O-2-6865 | Tri-Union Development Corp. only | Matagorda Block 563-L (6936) | Matgrda IS-LB | 1 | 70.7K | 158K | Jan 1993 – Mar 1999 |
| State Tract 721-L S/2 NE/4 G-4-195888 | Gryphon Exploration Company only | Alexandre (Cib Haz 3) | Matgrda IS-LB | 1 | 66.9K | 6.03M | May 2003 – Mar 2007 |
| State Tract 520-L, NW/4 G-3-71459 | TR Offshore, LLC only | El Gordo (11800) | Matgrda IS-LB | 1 | 57.8K | 5.85M | Jan 1993 – Jun 2010 |
| State Tract 563-L G-2-114520 | Reunion Energy Company only | Matagorda Block 563-L (6517) | Matgrda IS-LB | 1 | 52.3K | 127K | Jan 1993 – Apr 1994 |
| State Tract 563 O-2-7970 | Tri-Union Development Corp. only | Matagorda Block 563-L (6517) | Matgrda IS-LB | 1 | 47.7K | 45.3K | May 1994 – Sep 1999 |
| State Tract 693-L G-4-198116 | Llog Exploration Texas, L.P. only | MI 828-S (B7-B Frio) | Matgrda IS-LB | 1 | 44K | 1.07M | Nov 2003 – Jun 2007 |
| S.T. 560-L (SW) Unit O-2-9415 | Hall-Houston Expl. II, L.P. only | Matagorda 560-L (7900 Sand) | Matgrda IS-LB | 1 | 41.9K | 1.41M | Jun 2009 – Nov 2013 |
| State Tract 629-L, SE/4 G-2-101908 | Fairways Spec. Sales & Serv Inc only | Block 630-L (4950) | Matgrda IS-LB | 1 | 33K | 172K | Jan 1993 – Feb 1995 |
| State Tract 563-L O-2-7335 | Tri-Union Development Corp. only | Matagorda Block 563-L (6820) | Matgrda IS-LB | 1 | 28.8K | 48.3K | Jan 1993 – May 1999 |
| State Tract 485-L S/2 NE/4 G-3-169432 | Dreyfus, Louis Natural Gas Corp only | Matagorda Island Blk. 485-L (E) | Matgrda IS-LB | 1 | 21.3K | 3.55M | Jun 1998 – Apr 2001 |
| State Tract 721-L (M102892) G-4-211144 | XTO Offshore Inc. only | Matagorda Isl. BLK 721-L (17-19) | Matgrda IS-LB | 1 | 16.3K | 1.4M | Jun 2005 – Feb 2009 |
| State Tract 629-L SE/4 O-2-8043 | Fairways Offshore Expl., Inc. only | Block 630-L (4950) | Matgrda IS-LB | 1 | 11.5K | 14.3K | Mar 1995 – Jul 1996 |
| State Tract 629-L, SE/4 O-2-6392 | Fairways Offshore Expl., Inc. only | Block 630-L (Catahoula Bar) | Matgrda IS-LB | 1 | 10.1K | 153K | Dec 1993 – Feb 1995 |
| State Tract 520-L NE/4 G-3-94584 | Atinum Energy, Inc. only | El Gordo (12070) | Matgrda IS-LB | 1 | 8.98K | 750K | Nov 1996 – Jun 2010 |
| Texas Gulf 57686 G-3-161307 | Black Elk Energy Offshore OP LLC only | Cove (MF Zone) | Matgrda IS-LB | 1 | 8.33K | 703K | Oct 1996 – Dec 2009 |
| State Tract 560-L NW/4 G-3-168468 | Dreyfus, Louis Natural Gas Corp only | Matagorda 560-L (SD-1) | Matgrda IS-LB | 1 | 7.12K | 3.13M | Apr 1998 – Feb 2000 |
| State Tract 520-L, NW/4 G-3-70869 | American Coastal Energy, Inc. only | El Gordo (Miocene) | Matgrda IS-LB | 1 | 6.97K | 723K | Jan 1993 – Apr 2003 |
| State Tract 721-L G-4-195600 | Hunt Petroleum (Aec), Inc. only | Alexandre (Cib Haz 3) | Matgrda IS-LB | 1 | 5.76K | 594K | Nov 2003 – Nov 2004 |
| State Tract 485-L, SW/4 G-3-69709 | Capco Offshore of Texas, Inc. only | El Gordo (Miocene) | Matgrda IS-LB | 1 | 5.54K | 841K | Jan 1993 – Jun 1995 |
| State Tract 520-L SE/4 G-3-150477 | Atinum Energy, Inc. only | El Gordo (13700) | Matgrda IS-LB | 1 | 4.77K | 668K | Mar 1994 – Jun 2010 |
| State Tract 631L O-2-9096 | Hunt Petroleum (Aec), Inc. only | MI 631L (Rob. L21) | Matgrda IS-LB | 1 | 4.37K | 85.7K | Jul 2006 – Sep 2006 |
| State Tract 520-L, NW/4 G-3-70867 | TR Offshore, LLC only | El Gordo (Miocene) | Matgrda IS-LB | 1 | 3.73K | 397K | Jan 1993 – Jun 2010 |
| St. Tr. 520-L, NW/4 G-3-75774 | TR Offshore, LLC only | El Gordo (12100) | Matgrda IS-LB | 1 | 3.41K | 501K | Jan 1993 – May 2010 |
| State Tract 582-S Gas Unit G-3-185381 | Vamos Oil & Gas, LLC only | Matagorda Island BLK 582-S (M) | Matgrda IS-LB | 1 | 3.02K | 1.67M | Nov 2001 – Nov 2004 |
| State Tract 485-L G-3-144789 | Torch Operating Company only | Matagorda Island Block 485-L (B) | Matgrda IS-LB | 1 | 2.74K | 491K | Jan 1993 – Dec 1994 |
| S. T. 560-L S/2 NW/4 G-2-225756 | Hall-Houston Expl. II, L.P. only | Matagorda 560-L (Miocene Cons.) | Matgrda IS-LB | 1 | 2.71K | 232K | Jun 2007 – Jan 2008 |
| Texas Gulf 57686 G-3-161302 | Black Elk Energy Offshore OP LLC only | Cove (ME Zone) | Matgrda IS-LB | 1 | 2.43K | 1.16M | Oct 1996 – Jul 2012 |
| State Tract 485-L G-3-153296 | Torch Operating Company only | Matagorda Island Blk. 485-L (Z) | Matgrda IS-LB | 1 | 1.84K | 362K | Jan 1995 – Mar 1996 |
| State Tract 632-L G-2-197468 | Hunt Petroleum (Aec), Inc. only | MI 632 (Miocene 2X) | Matgrda IS-LB | 1 | 1.62K | 1.55M | Oct 2003 – Aug 2006 |
| State Tract 659-L NW/4 O-2-6498 | White Marlin Operating Co, LLC only | Matagorda Block 629 (Playa C) | Matgrda IS-LB | 1 | 1.55K | 0 | Dec 2000 – Jun 2001 |
| Matagorda Island 519-L Gas Unit G-3-185582 | Fieldwood Energy LLC only | Matagorda Isl. BLK 519-L (15600) | Matgrda IS-LB | 1 | 1.55K | 683K | Sep 2001 – Jan 2003 |
| State Tract 631-L G-2-196820 | XTO Offshore Inc. only | MI 631L (Rob. L 20) | Matgrda IS-LB | 1 | 1.51K | 402K | Oct 2003 – Jun 2008 |
| State Tract 520L NW/4 O-3-24392 | Sterling Energy, Inc. only | El Gordo (Miocene) | Matgrda IS-LB | 1 | 1.08K | 20.9K | May 2003 – May 2004 |
| State Tract 485-L G-3-159763 | Capco Offshore of Texas, Inc. only | Matagorda Island Blk. 485-L (W) | Matgrda IS-LB | 1 | 1.04K | 647K | Jul 1996 – Apr 2002 |
| State Tract 582-S Gas Unit G-3-189663 | Vamos Oil & Gas, LLC only | Matagorda Island BLK.582-S (M-5) | Matgrda IS-LB | 1 | 906 | 630K | Apr 2002 – Nov 2003 |
| State Tract 631-L G-2-204066 | Hunt Petroleum (Aec), Inc. only | MI 631L (Siph. D Sand) | Matgrda IS-LB | 1 | 738 | 1.43M | Oct 2003 – Dec 2005 |