| Stanton Unit G-3-206281 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 4.48K | 5.38M | Sep 2004 – Apr 2026 |
| Smith, J.W. O-3-25021 | Geosouthern Energy Corporation only | Giddings (Buda) | Brazos | 1 | 4.46K | 0 | Aug 2007 – May 2019 |
| Humphries Unit 1 O-3-15756 | Patterson Petroleum LP only | Kurten (Buda) | Brazos | 1 | 4.36K | 2.69K | Jan 1993 – Apr 2002 |
| McKinney Unit I O-3-21420 | McDaniel Company, Inc., The only | Kurten (Austin Chalk) | Brazos | 1 | 4.34K | 5.4K | Jan 1993 – Jun 1995 |
| Carroll Unit G-3-154432 | Texas Refining, Inc. only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 4.33K | 106K | Dec 1993 – Jan 1996 |
| Beryl O-3-25838 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 4.31K | 3.09K | Aug 2011 – Nov 2019 |
| Hamilton O-3-17897 | Omimex Petroleum, Inc. only | Giddings (Buda) | Brazos | 1 | 4.3K | 10.8K | Jan 1993 – Nov 1996 |
| Gamble, P.K. Etal O-3-18313 | Dpmp Energy LLC only | Aggieland (Woodbine) | Brazos | 1 | 4.28K | 50.1K | Jan 1993 – Apr 2020 |
| Payne Unit 1 O-3-24914 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 4.24K | 0 | Aug 2007 – Aug 2020 |
| Raborn-Allgreen Unit O-3-21856 | Douglas Petroleum Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 4.21K | 12.3K | Jan 1993 – Jun 1994 |
| Williams Unit G-3-236004 | Evolution Operating Co., Inc. only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 4.2K | 294K | Mar 2008 – Dec 2012 |
| Holubec Unit II O-3-13944 | Ows Energy, Inc. only | Kurten (Woodbine) | Brazos | 1 | 4.16K | 8.03K | Jan 1993 – Aug 1996 |
| Cody, Joe O-3-17214 | CDC Operating Company only | Kurten (Buda) | Brazos | 1 | 4.12K | 7.29K | Jan 1993 – May 1999 |
| Arhopulos-Brazos Unit G-3-144780 | Williams, Clayton Energy, Inc. only | Clay, N E. (Deep) | Brazos | 1 | 4.1K | 407K | Mar 1993 – Aug 1996 |
| Dansby Unit 1 O-3-18117 | Vess Oil Corporation only | Kurten (Buda) | Brazos | 1 | 4.1K | 9.64K | Jan 1993 – Mar 1997 |
| Caldwell, C.W. O-3-15722 | La Campana, Inc. only | Kurten (Woodbine) | Brazos | 1 | 4.04K | 19 | Jan 1993 – May 2008 |
| Wineman-X O-3-25773 | Halcon Operating Co., Inc. only | Giddings (Buda) | Brazos | 1 | 4.04K | 75.7K | Dec 2009 – Jun 2014 |
| Odom, W.F. Unit III O-3-18371 | Vess Oil Corporation only | Kurten (Buda) | Brazos | 1 | 4.03K | 3.21K | Jan 1993 – Oct 1997 |
| Revised O-3-27371 | Proven Natural Resources LLC only | Kurten (Woodbine) | Brazos | 1 | 4.02K | 132 | May 2018 – Apr 2026 |
| Cervelo O-3-26763 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 4.01K | 473K | Mar 2015 – Mar 2026 |
| Reser-Sanders Unit G-3-230609 | Magnolia Oil & Gas Operating LLC only | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 4.01K | 146K | May 2007 – Apr 2014 |
| Wade, L. S. G-3-189074 | Enervest Operating, L.L.C. only | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 4K | 958K | Dec 2001 – Jun 2012 |
| Ruffino, P. Jr. "C" O-3-17182 | Union Pacific Resources Company only | Kurten (Buda) | Brazos | 1 | 3.96K | 4.17K | Jan 1993 – Aug 1995 |
| Burkhart, A.S. Ranch #2 O-3-19505 | Cameron, Paul E., Jr., Inc. only | Kurten (Buda) | Brazos | 1 | 3.93K | 3.57K | Jan 1993 – Jul 1995 |
| Windy Hill Ranch B O-3-15891 | Northfield Enterprises, Inc. only | Kurten (Buda) | Brazos | 1 | 3.91K | 21 | Jan 1993 – Jun 2002 |
| Urso O-3-28285 | CML Exploration, LLC only | Kurten (Buda) | Brazos | 1 | 3.87K | 236 | May 2025 – Apr 2026 |
| Rotello Unit "A" G-3-204567 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.85K | 2.12M | Mar 2004 – Apr 2026 |
| Burkhart "A" O-3-19992 | Cago, Inc. only | Kurten (Buda) | Brazos | 1 | 3.66K | 4.28K | Jan 1993 – Feb 2000 |
| Grant-McDougal Unit O-3-21774 | Williams, Clayton W., Jr., Inc. only | Kurten (Buda) | Brazos | 2 | 3.61K | 1.5K | Jan 1993 – Feb 1993 |
| Mother Plumlee O-3-16977 | J & M Well Salvage Company only | Kurten (Buda) | Brazos | 1 | 3.57K | 31 | Jan 1993 – Dec 1995 |
| Cheyenne G-3-161253 | Buffco Production Inc. only | Bryan (Georgetown) | Brazos | 1 | 3.57K | 199K | Jun 1996 – Jul 2008 |
| Peters Unit G-3-219039 | Lonestar Operating, LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 3.52K | 28.5K | Aug 2006 – Feb 2016 |
| Bonano Unit One O-3-17916 | Anadarko E&P Company LP only | Kurten (Buda) | Brazos | 1 | 3.5K | 1.44K | Jan 1993 – Mar 1996 |
| Ruffino, P. III "D" O-3-17513 | Union Pacific Resources Company only | Kurten (Buda) | Brazos | 1 | 3.49K | 987 | Jan 1993 – Jul 1995 |
| Mitchell O-3-25774 | Centex Energy, LLC only | Kurten (Woodbine) | Brazos | 1 | 3.46K | 2K | Apr 2010 – Feb 2015 |
| Vance, Vonnie O-3-21953 | Geosouthern Energy Corporation only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.4K | 55.9K | Jan 1993 – Apr 1996 |
| Bonano Unit O-3-17543 | Anadarko E&P Company LP only | Kurten (Buda) | Brazos | 1 | 3.4K | 2.31K | Jan 1993 – Dec 1999 |
| Brazos-Lightsey Unit O-3-21356 | Patterson Petroleum, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.39K | 20.3K | Jan 1993 – Jan 1995 |
| Dinkins OL G-3-152168 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.37K | 3.85M | Nov 1994 – Apr 2026 |
| Gentry, H.J. O-3-17251 | B.W.O.C., Inc. only | Bryan, N. (Georgetown) | Brazos | 1 | 3.37K | 11K | Jan 1993 – Apr 2000 |
| Presnal, W. O-3-16487 | Omimex Petroleum, Inc. only | Kurten (Buda) | Brazos | 2 | 3.36K | 4.84K | Jan 1993 – May 1996 |
| Metzer Unit II O-3-11817 | Great Western Onshore Inc. only | Kurten (Woodbine) | Brazos | 1 | 3.29K | 32 | Jan 1993 – Aug 1996 |
| Gig'em O-3-21407 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.26K | 27.7K | Jan 1993 – Oct 1993 |
| Smith O-3-17334 | Omimex Petroleum, Inc. only | Kurten (Buda) | Brazos | 1 | 3.25K | 3.57K | Jan 1993 – Jan 1997 |
| Moore Unit O-3-16128 | Andrus Resources Corporation only | Kurten (Buda) | Brazos | 1 | 3.22K | 10 | Jan 1993 – Jul 1997 |
| Reed-Newberry "A" O-3-25020 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 3.14K | 5.06K | Aug 2007 – Jul 2016 |
| Patricia O-3-17861 | Aj's Pump Truck Service, Inc. only | Kurten (Buda) | Brazos | 1 | 3.12K | 339 | Jan 1993 – Mar 2013 |
| Dorotea Varisco Estate "a" Unit O-3-17381 | MW Petroleum Corporation only | Stone City (Austin Chalk) | Brazos | 1 | 3.11K | 2.79K | Jan 1993 – Apr 1995 |
| Lampo, Johnny O-3-21325 | Douglas Petroleum Inc. only | Kurten (Austin Chalk) | Brazos | 1 | 3.02K | 35 | Jan 1993 – May 1997 |
| Startown 'A'unit O-3-21582 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 3.01K | 21K | Jan 1993 – Aug 1993 |