| Blessing Pierce (-S- Unit) O-3-23535 | Sue-Ann Operating, L.C. only | Blessing (F-10) | Matagorda | 1 | 1.8K | 14.6K | Jul 1998 – Apr 1999 |
| Consolidated Citrus Grove Unit G-3-5767 | Apache Corporation only | Collegeport (8) | Matagorda | 1 | 1.79K | 718K | by Jan 1993 – Nov 1995 |
| Sliva Gas Unit G-3-185963 | Unit Petroleum Company only | Nance (Tex-Miss # 8) | Matagorda | 1 | 1.79K | 261K | Nov 2001 – Oct 2002 |
| East Matagorda Bay Unit G-3-161211 | Texas Meridian Res. Expl., Inc. only | Maverick Bayou (L. Frio 15,500) | Matagorda | 1 | 1.76K | 504K | Oct 1995 – Apr 1997 |
| Cobb, F. G. "B" G-3-151008 | Apache Corporation only | Bay City (8400) | Matagorda | 1 | 1.75K | 139K | Sep 1994 – Aug 1995 |
| Kopecky O-3-20522 | Minyak Producing Company, Inc. only | El Maton, SW (Frio 10320) | Matagorda | 1 | 1.75K | 24 | by Jan 1993 – Aug 1995 |
| Rugeley, E. F. G-3-136610 | Rse, Inc. only | Lucky, NE. (Bay City Sd.) | Matagorda | 1 | 1.74K | 221K | by Jan 1993 – May 1996 |
| Burke, Frances P. et al Unit G-3-92458 | Sandel Operating Company only | Mellon (10500) | Matagorda | 1 | 1.69K | 155K | by Jan 1993 – Dec 2008 |
| Sittel GU G-3-207857 | EOG Resources, Inc. only | Nance (Mid AB-1) | Matagorda | 1 | 1.65K | 473K | Jan 2005 – Jan 2007 |
| Dawdy Gas Unit G-3-252252 | Wynn-Crosby Operating, Ltd. only | Tidehaven (10,300) | Matagorda | 1 | 1.64K | 78.7K | Nov 2008 – Aug 2010 |
| East Blessing Unit G-3-279747 | GTG Operating, LLC only | Potthast (Middle Tex Miss) | Matagorda | 1 | 1.63K | 44.7K | Apr 2014 – Aug 2023 |
| Blessing Unit No. 3 G-3-225942 | Baseline Oil & Gas Corp. only | Pheasant, SW. (Frio 10500) | Matagorda | 1 | 1.62K | 24.4K | Dec 2006 – Mar 2009 |
| Hospital Gas Unit G-3-179867 | Esenjay Exploration, Inc only | El Maton (Frio 9,800) | Matagorda | 1 | 1.61K | 179K | Sep 2000 – Feb 2001 |
| Lake Austin State G-3-201098 | Bexco Operating, Inc. only | Lake Austin State (Mio. 15 SD) | Matagorda | 1 | 1.61K | 2.95M | Feb 2004 – Jun 2013 |
| Sutherland Ottis Gas Unit G-3-214239 | Samson Lone Star LP only | Wadsworth, S. (Tex-Miss A) | Matagorda | 1 | 1.6K | 31.7K | Dec 2005 – Feb 2006 |
| Metzger Gas Unit G-3-153828 | Expro Engineering, Inc. only | Bay City, East (10,200 B) | Matagorda | 1 | 1.6K | 451K | Apr 1995 – Dec 2008 |
| Rugeley, Henry O-3-24508 | Texian Operating Company, LLC only | Bay City (8200 Frio) | Matagorda | 1 | 1.59K | 13K | Sep 2003 – Jun 2006 |
| Cobb, F. G. G-3-189089 | Apache Corporation only | Bay City (8000 Frio) | Matagorda | 1 | 1.58K | 77.1K | Mar 2002 – Oct 2005 |
| Hurlock, H. E. O-3-9890 | Sure Flow Oil & Gas, Inc. only | Sugar Valley (Ammo 8590) | Matagorda | 1 | 1.56K | 14 | by Jan 1993 – Feb 1994 |
| McCallum, Bruce Gas Unit G-3-136484 | | Midfields, SW. (8550) | Matagorda | 1 | 1.56K | 37.1K | Aug 1995 – Jul 2003 |
| Foisey, E. B. G-3-147917 | Shana Petroleum Company only | Palacios (Frio -A-) | Matagorda | 1 | 1.56K | 3.45K | Dec 1993 – Oct 1995 |
| Moore Estate O-3-12319 | Apache Corporation only | Bay City (8700 Frio) | Matagorda | 1 | 1.56K | 3.19K | by Jan 1993 – Jan 1994 |
| Cornelius, L. G-3-288352 | Rumble Energy LLC only | Wadsworth ( CH-1) | Matagorda | 1 | 1.55K | 21.6K | Dec 2019 – Aug 2023 |
| Reeves, Marguerite O-3-18573 | Rusk Energy Operating LLC only | Hamman (11,500 Frio) | Matagorda | 1 | 1.54K | 37 | by Jan 1993 – Aug 2026 |
| Ohio Sun Unit G-3-132362 | Goldking Minerals Mgmt, L.L.C. only | Markham,n.-Bay City,n. (Yeager) | Matagorda | 1 | 1.53K | 321K | by Jan 1993 – Oct 1995 |
| Heffelfinger 'C' G-3-271194 | Langston Oil, LLC only | Tidehaven ( Heffelfinger) | Matagorda | 1 | 1.53K | 1.37K | Feb 2013 – Dec 2013 |
| Emil J. Ottis Heirs Gas Unit G-3-242064 | Devon Energy Production Co, L.P. only | Wadsworth, S. (Discorbis 14390) | Matagorda | 1 | 1.53K | 118K | Apr 2008 – Sep 2008 |
| Pierce G-3-187338 | Dallas Production, Inc. only | Pheasant (Simpson) | Matagorda | 1 | 1.49K | 164K | Aug 2001 – May 2003 |
| Gracey Unit G-3-132375 | Amoco Production Company only | Old Ocean (Armstrong) | Matagorda | 1 | 1.47K | 778K | by Jan 1993 – Aug 1995 |
| Ohio Sun Unit O-3-26069 | Premier Natural Resources, LLC only | Markham N.-Bay City, N (W. 2 UP) | Matagorda | 1 | 1.47K | 10.4K | Jul 2010 – Jan 2012 |
| Stoddard-Lewis Unit G-3-147005 | Atlas Operating LLC only | Duncan Slough (Frio Cons.) | Matagorda | 1 | 1.46K | 66.1K | May 1993 – Nov 1996 |
| Reinke Heirs G-3-223311 | Helis Oil & Gas Company, L.L.C. only | Hamman, East (10,100 Frio) | Matagorda | 1 | 1.46K | 49.3K | Nov 2007 – Oct 2008 |
| Doss, William G-3-204433 | Bexco Operating, Inc. only | Lake Austin State (Mio. 15 SD) | Matagorda | 1 | 1.46K | 1.88M | Oct 2004 – Jun 2011 |
| Anderson G-3-275419 | Magnum Producing, LP only | Lucky (Thompson 10100) | Matagorda | 1 | 1.42K | 1.02M | Jun 2014 – Aug 2017 |
| Wallace G-3-243575 | Square Mile Energy, L.L.C. only | Tidehaven, W (Anom 1) | Matagorda | 1 | 1.4K | 269K | Aug 2008 – Jan 2012 |
| Old Ocean Unit G-3-208139 | Hilcorp Energy Company only | Old Ocean (F-10) | Matagorda | 1 | 1.37K | 134K | Oct 2004 – Apr 2006 |
| Naomi Jensen Unit G-3-301157 | Bruington Operating II, LLC only | Palacios (Melbourn E-3 Seg C) | Matagorda | 1 | 1.35K | 190K | Apr 2026 – Aug 2026 |
| Wadsworth, A. H. G-3-214584 | Zone Ridge Operating, LLC only | Midfields, S W (9150) | Matagorda | 1 | 1.3K | 33.3K | Mar 2006 – Dec 2007 |
| Nelson, H.J. O-3-14386 | Unit Petroleum Company only | Collegeport, North (C-2 Sand) | Matagorda | 2 | 1.29K | 28K | by Jan 1993 – Apr 1996 |
| J. L. Evans Ranch G-3-264337 | Ponderosa Oil & Gas, LLC only | Sugar Valley, S. (Frio 11050) | Matagorda | 1 | 1.27K | 230K | Jan 2012 – Sep 2014 |
| Ohio-Sun Unit G-3-172794 | Remora Management, LLC only | Markham N.-Bay CITY,N(MARK.7900) | Matagorda | 1 | 1.26K | 59.3K | Mar 1999 – Feb 2000 |
| Blessing Pierce (-S- Unit) G-3-146626 | Sue-Ann Operating, L.C. only | Blessing (F-11) | Matagorda | 1 | 1.24K | 396K | Sep 1993 – Dec 1998 |
| Hardy Horn G-3-216462 | Sue-Ann Operating, L.C. only | Lario (10400) | Matagorda | 1 | 1.24K | 124K | Apr 2006 – Jan 2007 |
| Blessing Unit No. 3 G-3-250509 | GTG Operating, LLC only | Pheasant (F-21) | Matagorda | 1 | 1.23K | 130K | Apr 2009 – Jun 2020 |
| Northern Ranch G-3-241769 | Apache Corporation only | Northern Ranch, S. (Greta Seg B) | Matagorda | 1 | 1.22K | 14K | Mar 2006 – Sep 2009 |
| Weinheimer, E. A. G-3-165500 | Costilla Energy, Inc. only | El Maton (Basal Frio) | Matagorda | 1 | 1.22K | 10.2K | Sep 1997 – Oct 1998 |
| Grant, John F. O-3-22770 | Oak Energy, LLC only | Sugar Valley (Frio 8,500) | Matagorda | 1 | 1.22K | 343 | May 1995 – Nov 1995 |
| Dawdy G-3-152761 | Sue-Ann Production Company only | Lucky, West (Frio 10360) | Matagorda | 1 | 1.22K | 229K | Jan 1995 – Nov 1995 |
| Runnells Gas Unit 1 G-3-238229 | Wynn-Crosby Operating, Ltd. only | Grand Slam (Claughton) | Matagorda | 1 | 1.21K | 23.4K | Sep 2008 – Aug 2009 |
| Burkhart G-3-246879 | Brigham Oil & Gas, L.P. only | Wadsworth (10,400 Frio) | Matagorda | 1 | 1.21K | 126K | Jul 2008 – Mar 2012 |