| 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 |
| Mango G-3-236764 | Proline Energy Resources Inc only | Coconut (Anomalina 4) | Matagorda | 1 | 14.3K | 810K | May 2008 – Feb 2018 |
| Lewis, J. C. O-3-6350 | Expro Engineering, Inc. only | Duncan Slough (Frio-5) | Matagorda | 2 | 14.3K | 57.3K | by Jan 1993 – Nov 1997 |
| Crenshaw O-3-6596 | Boester, H. F. only | Caney (Lewis Sand) | Matagorda | 1 | 14.1K | 3.18K | by Jan 1993 – Jun 1999 |
| Lewis, J. C. G-3-153266 | Expro Engineering, Inc. only | Duncan Slough (Frio-8) | Matagorda | 1 | 13.7K | 689K | Feb 1995 – Jul 2000 |
| Heffelfinger "A" G-3-282603 | Kebo Oil & Gas, Inc. only | Tidehaven (10,300) | Matagorda | 1 | 13.7K | 1.2M | Jun 2017 – Aug 2026 |
| Ohio-Sun Unit G-3-167197 | Remora Management, LLC only | Markham N.-Bay CITY,N(MARK.7900) | Matagorda | 1 | 13.6K | 263K | Feb 1998 – Apr 2002 |
| Papaya G-3-249831 | Proline Energy Resources Inc only | Coconut (Anomalina 4) | Matagorda | 1 | 13.6K | 439K | May 2009 – Feb 2023 |
| Sliva Gas Unit G-3-188106 | Unit Petroleum Company only | Nance (Tex-Miss # 5) | Matagorda | 1 | 13.6K | 2.47M | Mar 2002 – Apr 2008 |
| Cobb, F. G. B O-3-23919 | Urban Oil & Gas Group, LLC only | Bay City (7430 Frio) | Matagorda | 1 | 13.6K | 151K | Feb 2000 – Nov 2019 |
| PHS Gas Unit G-3-247837 | Bushmaster Production Comp, LLC only | Tidehaven (10,300) | Matagorda | 1 | 13.5K | 843K | Feb 2009 – Jun 2026 |
| Robertson, W. T. O-3-23305 | Chaparral Energy, L.L.C. only | Sugar Valley (8100) | Matagorda | 1 | 13.4K | 20.6K | Aug 1997 – Jan 2006 |
| Hickle, Louis, et Al G-3-7736 | Trinidad Energy, LLC only | Palacios (Frio "E" FB 1) | Matagorda | 1 | 13.4K | 1.56M | by Jan 1993 – Jul 2026 |
| Braman "C" O-3-20036 | Chaparral Energy, L.L.C. only | Sugar Valley, N. (Talcott -C-) | Matagorda | 2 | 13.1K | 16K | Feb 1993 – Jan 1998 |
| Harrison, G. G-3-275571 | Proline Energy Resources Inc only | Pheasant, SW. (Frio I) | Matagorda | 1 | 13.1K | 220K | Jun 2014 – Feb 2016 |
| Robertson, W.T. O-3-10526 | Houston Hydrocarbons, Inc. (A) only | Sugar Valley (Grant) | Matagorda | 1 | 13K | 27.5K | by Jan 1993 – Feb 1995 |
| Hodge G-3-279736 | Ballard Exploration Company,inc. only | Little Lake (Yegua) | Matagorda | 1 | 13K | 422K | Jun 2014 – Apr 2016 |
| Doss, W. G-3-121422 | Shidler, Mark L., Inc. only | Wadsworth, South (Doss) | Matagorda | 1 | 13K | 1.44M | by Jan 1993 – Feb 2020 |
| Ohio-Sun Unit G-3-147825 | Goldking Minerals Mgmt, L.L.C. only | Markham N.-Bay City, N (Braman) | Matagorda | 1 | 12.9K | 865K | Dec 1993 – Feb 2018 |
| NE Lario G-3-212364 | Sue-Ann Operating, L.C. only | Lario (10400) | Matagorda | 1 | 12.9K | 1.5M | Jun 2005 – Aug 2010 |
| Cobb, F. G. "B" O-3-22962 | Apache Corporation only | Bay City (8000 Frio) | Matagorda | 1 | 12.8K | 31K | May 1996 – May 1999 |
| Barkley G-3-89887 | CLR Secondary Recovery, LLC only | Mellon (10500) | Matagorda | 1 | 12.8K | 1.26M | by Jan 1993 – Apr 2019 |
| Runnells G-3-177604 | Lodestone Operating, Inc. only | Ashwood (Frio 9020) | Matagorda | 1 | 12.8K | 322K | Dec 1999 – Jan 2016 |
| Batchelder et Al G-3-138062 | Aviara Energy Corporation only | Turtle Creek (10150 Sd.) | Matagorda | 1 | 12.8K | 314K | by Jan 1993 – Aug 1996 |
| Wolf G-3-251640 | Kirkpatrick, John Oil LLC only | Lucky, West ( Hardy Horn, Lower) | Matagorda | 1 | 12.7K | 393K | Oct 2009 – Feb 2020 |
| Steele, L. M. Trust G-3-130044 | Amrwr, LLC only | Duncan Slough, SW (Frio 7) | Matagorda | 1 | 12.7K | 3.08M | by Jan 1993 – May 2011 |
| 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 |
| Union Central Life Ins Co. GU G-3-233773 | EOG Resources, Inc. only | Bucks Bayou (Frio Tex 2) | Matagorda | 1 | 12.6K | 2.42M | Jan 2008 – Jun 2015 |
| Simon G-3-176895 | EOG Resources, Inc. only | Lucky, South (Frio TM-8) | Matagorda | 1 | 12.5K | 904K | Mar 2000 – Jul 2003 |
| Simon O-3-24393 | EOG Resources, Inc. only | Lucky, South (9300-B) | Matagorda | 1 | 12.5K | 23.8K | Jul 2003 – Aug 2009 |
| Runnells Gas Unit G-3-193932 | Santos USA Corp. only | Grand Slam (Claughton) | Matagorda | 1 | 12.5K | 222K | Jan 2003 – Nov 2003 |
| Anderson G-3-290845 | Magnum Producing, LP only | Lucky (10,000) | Matagorda | 1 | 12.4K | 547K | Apr 2021 – Jul 2026 |
| Nelson East Blessing Unit G-3-233390 | Clearly Petroleum, LLC only | Pheasant, SW. (Frio 11000) | Matagorda | 1 | 12.3K | 160K | Dec 2007 – Jan 2017 |
| Terry-Poessel Gas Unit G-3-195488 | Santos USA Corp. only | Tidehaven (10,300) | Matagorda | 1 | 12.2K | 496K | Oct 2002 – Aug 2004 |
| Cobb, F. G. O-3-24808 | Apache Corporation only | Bay City (7600 Frio) | Matagorda | 1 | 12.2K | 890 | Jan 2006 – Dec 2007 |
| Talafuse G-3-224009 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 12.1K | 515K | Sep 2006 – Jan 2012 |
| Old Ocean Unit G-3-92685 | Hilcorp Energy Company only | Old Ocean (F- 8) | Matagorda | 1 | 12.1K | 756K | by Jan 1993 – Aug 2026 |
| Savage, Stewart O-3-15521 | Alltex Exploration, Inc. only | Wadsworth (a-2,SO. Seq) | Matagorda | 1 | 12K | 60 | Mar 1993 – Jul 2026 |
| Dawdy O-3-26894 | Kebo Oil & Gas, Inc. only | Buckeye, West (8700) | Matagorda | 1 | 11.7K | 0 | May 2015 – May 2020 |
| Graff G-3-193043 | Remora Operating, LLC only | Potthast (Frio "L" Sand) | Matagorda | 1 | 11.7K | 131K | Jan 2003 – Oct 2003 |
| 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 |
| Thomasson, Sadie E. G-3-197764 | Oak Energy, LLC only | Sugar Valley (Frio 8,500) | Matagorda | 1 | 11.7K | 13.2K | Dec 2003 – Dec 2018 |
| Ohio-Sun Unit G-3-173821 | Comstock Oil & Gas, Inc. only | Markham,n.-Bay CITY,N.(7500) | Matagorda | 1 | 11.7K | 390K | Jul 1999 – Dec 2001 |
| Jenkins G-3-180381 | Tri-C Resources, Inc. only | Palacios (Frio -E-6 Seg E) | Matagorda | 1 | 11.6K | 250K | Nov 2000 – Jan 2002 |
| 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 |
| Thomasson, Sadie E. O-3-27480 | Oak Energy, LLC only | Sugar Valley (Frio 8,500) | Matagorda | 1 | 11.5K | 12.5K | Jan 2019 – Feb 2023 |
| Sittel GU O-3-25538 | EOG Resources, Inc. only | Nance (Frio 9600) | Matagorda | 1 | 11.3K | 921K | Apr 2010 – Jul 2011 |
| Baer Ranch G-3-191094 | Whitmar Exploration Company only | Baer Ranch (Tex-Miss #3) | Matagorda | 1 | 11.3K | 738K | Feb 2002 – Jul 2003 |
| Ferguson Ranch O-3-27464 | Veracity Energy LLC only | Caney (Lewis Sand) | Matagorda | 1 | 11.3K | 10.2K | Sep 2018 – Oct 2018 |