| Runnells Gas Unit G-3-186020 | Wynn-Crosby Operating, Ltd. only | Grand Slam (Claughton) | Matagorda | 1 | 374K | 10.8M | Aug 2001 – Aug 2008 |
| Runnells Gas Unit G-3-181480 | IV Standard, LLC only | Grand Slam (Claughton) | Matagorda | 1 | 261K | 8.32M | Nov 2000 – Oct 2024 |
| Sutherland-Ottis Gas Unit G-3-174519 | EOG Resources, Inc. only | Abbey's Point (1ST Discorbis) | Matagorda | 1 | 243K | 15M | Sep 1999 – Mar 2012 |
| Gresham Gas Unit G-3-265865 | Charolais Energy, LLC only | Trull (8900) | Matagorda | 1 | 236K | 1.33M | Aug 2011 – Jul 2026 |
| Petersen, Saha Gas Unit G-3-230859 | Square Mile Energy, L.L.C. only | Coconut (Anomalina 4) | Matagorda | 1 | 174K | 14.7M | Mar 2007 – Dec 2020 |
| Sutherland-Ottis Gas Unit G-3-175133 | EOG Resources, Inc. only | Abbey's Point (1ST Discorbis) | Matagorda | 1 | 163K | 10.4M | Oct 1999 – Mar 2005 |
| Saha-Petersen Gas Unit G-3-246621 | Square Mile Energy, L.L.C. only | Coconut (Anomalina 4) | Matagorda | 1 | 130K | 12.2M | Jan 2009 – Aug 2026 |
| Saha-Petersen Gas Unit G-3-233756 | Square Mile Energy, L.L.C. only | Coconut (Anomalina 3) | Matagorda | 1 | 104K | 5.98M | Sep 2007 – Jul 2015 |
| West Blessing Gas Unit B G-3-245923 | Dallas Petroleum Group, LLC only | Pheasant, SW. (Frio 10500) | Matagorda | 1 | 75.2K | 866K | Dec 2008 – Aug 2026 |
| Milberger Gas Unit G-3-210822 | Rap Operating, L.L.C. only | Hamman, East (10,870) | Matagorda | 1 | 66.2K | 1.92M | Jun 2005 – Jan 2023 |
| Milberger Gas Unit G-3-211023 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 62.5K | 1.32M | Aug 2005 – May 2013 |
| Hawkins Ranch Gas Unit G-3-210174 | Samson Exploration, LLC only | Wadsworth, South (Tex-Miss) | Matagorda | 1 | 60.5K | 2.9M | May 2005 – Dec 2011 |
| St. George Gas Unit G-3-168733 | Ventex Operating Corp. only | Rusty (13000) | Matagorda | 1 | 49.3K | 3.16M | Jan 1998 – Nov 2004 |
| Runnells Gas Unit G-3-189268 | IV Standard, LLC only | Grand Slam (Claughton) | Matagorda | 1 | 44K | 1.43M | Dec 2001 – Dec 2022 |
| Terry-Poessel Gas Unit G-3-208843 | Arcadia Operating, LLC only | Tidehaven ( 9,500 Frio) | Matagorda | 1 | 42.5K | 2.32M | Feb 2005 – Jul 2018 |
| West Blessing Gas Unit G-3-242403 | Dallas Petroleum Group, LLC only | Pheasant, SW. (Frio 10500) | Matagorda | 1 | 38.9K | 807K | Aug 2008 – Dec 2020 |
| Insall Gas Unit O-3-24826 | Deguello Operating LLC only | Lucky | Matagorda | 1 | 37.7K | 15.2K | Feb 2006 – Apr 2019 |
| Miller, L. H. Gas Unit G-3-151805 | Hamman Oil & Refining Company only | Jennings Lake (Frio 9500) | Matagorda | 1 | 37.3K | 825K | Dec 1994 – Nov 1997 |
| Trull Gas Unit G-3-272228 | Sanchez Oil & Gas Corporation only | Trull (8900) | Matagorda | 1 | 37K | 353K | Dec 2013 – Jul 2016 |
| Goodall-Doss Gas Unit No. 1 G-3-279975 | Hilcorp Energy Company only | Wadsworth, S. (Tex-Miss A) | Matagorda | 1 | 35.3K | 1.04M | Apr 2015 – Aug 2026 |
| Talafuse Gas Unit G-3-254779 | Amrwr, LLC only | Hamman, East (11,200 Frio FB B) | Matagorda | 1 | 34.2K | 755K | Jun 2008 – Jan 2023 |
| Dawdy Gas Unit G-3-179451 | Wynn-Crosby Operating, Ltd. only | Tidehaven, Deep (Frio 11,700) | Matagorda | 1 | 31.9K | 2.08M | Aug 2000 – Oct 2008 |
| Runnells Gas Unit G-3-201102 | IV Standard, LLC only | Duncan Slough (Frio Cons.) | Matagorda | 1 | 30.3K | 4.74M | Nov 2003 – Aug 2026 |
| Runnells Gas Unit 1 G-3-261682 | IV Standard, LLC only | Grand Slam (Claughton) | Matagorda | 1 | 29.7K | 457K | Jan 2011 – Jun 2012 |
| Milberger Gas Unit G-3-246582 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 27.1K | 303K | Feb 2008 – Jul 2010 |
| Sutherland Ottis Gas Unit G-3-216464 | Samson Exploration, LLC only | Wadsworth, S.E. (Goodall Sd.) | Matagorda | 1 | 26K | 2.61M | Apr 2006 – Nov 2013 |
| Alta-Ottis Gas Unit G-3-209804 | Samson Exploration, LLC only | Wadsworth, South (Tex-Miss) | Matagorda | 1 | 19.8K | 1.27M | Mar 2005 – Aug 2013 |
| Burkhart Gas Unit G-3-219022 | Atlas Operating LLC only | Silverspoon (Tex SA1 Sand) | Matagorda | 1 | 19.6K | 3.27M | Dec 2005 – Dec 2014 |
| Goodall-Doss Gas Unit G-3-174072 | EOG Resources, Inc. only | Wadsworth, South (Doss) | Matagorda | 1 | 18.8K | 1.11M | Aug 1999 – Aug 2002 |
| Burkhart Gas Unit G-3-230811 | Devon Energy Production Co, L.P. only | Silverspoon (Tex SA1 Sand) | Matagorda | 1 | 18.5K | 2.52M | Aug 2007 – Dec 2008 |
| Zapalac Gas Unit G-3-233372 | Gulf Coast Acquisitions Co. L.C. only | Lario (10400) | Matagorda | 1 | 15.4K | 486K | Jan 2008 – Mar 2010 |
| Horak Gas Unit G-3-225126 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 15K | 342K | Jan 2007 – Jul 2010 |
| Metzger Gas Unit G-3-137674 | Atlas Operating LLC only | Bay City, East (8150 FB-A) | Matagorda | 1 | 14.7K | 346K | by Jan 1993 – Oct 2020 |
| J. O. Olson, et al Gas Unit O-3-26194 | Hilcorp Energy Company only | Rugeley, SW. (Helmouth 12660) | Matagorda | 1 | 14.4K | 77.1K | Dec 2012 – Dec 2013 |
| Butter Gas Unit No. 1 G-3-135610 | Remora Operating, LLC only | Petrucha (10,900) | Matagorda | 1 | 14.4K | 549K | by Jan 1993 – Apr 2018 |
| Sliva Gas Unit G-3-188106 | Unit Petroleum Company only | Nance (Tex-Miss # 5) | Matagorda | 1 | 13.6K | 2.47M | Mar 2002 – Apr 2008 |
| PHS Gas Unit G-3-247837 | Bushmaster Production Comp, LLC only | Tidehaven (10,300) | Matagorda | 1 | 13.5K | 843K | Feb 2009 – Jun 2026 |
| Miller, L. H. Gas Unit G-3-118943 | Hamman Oil & Refining Company only | Jennings Lake (Frio 9500) | Matagorda | 1 | 12.6K | 276K | by Jan 1993 – Jan 1996 |
| Runnells Gas Unit G-3-193932 | Santos USA Corp. only | Grand Slam (Claughton) | Matagorda | 1 | 12.5K | 222K | Jan 2003 – Nov 2003 |
| Terry-Poessel Gas Unit G-3-195488 | Santos USA Corp. only | Tidehaven (10,300) | Matagorda | 1 | 12.2K | 496K | Oct 2002 – Aug 2004 |
| Talafuse Gas Unit G-3-257003 | Rap Operating, L.L.C. only | Hamman, East ( FB A) | Matagorda | 1 | 11.7K | 488K | Sep 2008 – May 2012 |
| Murphy et al Gas Unit G-3-269773 | Sandalwood Exploration, L.P. only | Ashby, E. (9652) | Matagorda | 1 | 11.6K | 730K | Feb 2013 – Sep 2023 |
| Sutherland-Ottis Gas Unit G-3-211973 | Samson Lone Star, LLC only | Abbey's Point (1ST Discorbis) | Matagorda | 1 | 10.3K | 1.22M | Sep 2005 – Aug 2007 |
| Milberger Gas Unit G-3-276868 | Rap Operating, L.L.C. only | Hamman, East (10,700 Frio) | Matagorda | 1 | 9.57K | 451K | May 2013 – Jan 2023 |
| Middlebrook Gas Unit G-3-223720 | Samson Exploration, LLC only | Green Bay (Frio 10830) | Matagorda | 1 | 8.79K | 890K | Oct 2006 – Sep 2011 |
| Hardy Gas Unit G-3-212831 | Devon Energy Production Co, L.P. only | Wadsworth, S. (Discorbis 14390) | Matagorda | 1 | 7.78K | 4.81M | May 2005 – Mar 2012 |
| Pounds Gas Unit G-3-224424 | Samson Lone Star, LLC only | Green Bay (Frio 10830) | Matagorda | 1 | 7.34K | 291K | Nov 2006 – Jan 2008 |
| Silva Gas Unit G-3-180728 | Unit Petroleum Company only | Nance (Tex-Miss #10) | Matagorda | 1 | 6.84K | 579K | Oct 2000 – Nov 2001 |
| PHS Gas Unit G-3-170775 | Wynn-Crosby Operating, Ltd. only | Tidehaven (2ND Anomalina) | Matagorda | 1 | 6.71K | 1.22M | May 1998 – Jan 2009 |
| Clardy, B. B. Gas Unit G-3-159717 | Unit Petroleum Company only | Palacios (Frio -F-) | Matagorda | 1 | 6.19K | 489K | Jun 1996 – Jun 1999 |