| Thousand Oaks RE O-3-24236 | Ogden Resources Corporation only | Giddings (Austin Chalk-3) | Brazos | 1 | 35.3K | 290K | Aug 2002 – Oct 2008 |
| Arnold Unit G-3-159645 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 35.2K | 2.12M | Jun 1996 – Apr 2026 |
| Kathleen OL G-3-156347 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 35.1K | 3.09M | Jul 1995 – Apr 2026 |
| Thomas Unit O-3-22235 | Wildfire Energy Operating LLC only | Kurten (Buda) | Brazos | 1 | 35.1K | 11.1K | Nov 1993 – Mar 2026 |
| Anderson O-3-16454 | Ramrod Oil and Gas (U.S.A.) Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.9K | 98.2K | Jun 1994 – Feb 1998 |
| Casey Unit O-3-26651 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 34.9K | 24.1K | Mar 2014 – Oct 2019 |
| Dominik-Holligan Unit O-3-21543 | Enervest Operating, L.L.C. only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.9K | 55.4K | Jan 1993 – Sep 2006 |
| McGee-Thompson Unit O-3-21552 | Evolution Operating Co., Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.8K | 186K | Jan 1993 – Sep 1997 |
| Wickson Unit G-3-164799 | Patterson Petroleum, Inc. only | Iola (Georgetown) | Brazos | 1 | 34.8K | 258K | Aug 1997 – Feb 1998 |
| Scott-Ruesink Unit O-3-23368 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.4K | 26.4K | Oct 1997 – Dec 2001 |
| Bryan Utilities Lake Unit O-3-21228 | Wildfire Energy Operating LLC only | Kurten (Buda) | Brazos | 1 | 34.3K | 87.6K | Jan 1993 – Oct 2024 |
| Stasny #1 Unit O-3-27455 | Ogden Resources Corporation only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.1K | 132K | May 2018 – Apr 2026 |
| Deerfield -a- Unit G-3-161757 | Magnolia Oil & Gas Operating LLC only | Kurten (Georgetown) | Brazos | 1 | 34K | 892K | Nov 1996 – Apr 2026 |
| Allen-Dansby Unit G-3-224957 | Magnolia Oil & Gas Operating LLC only | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 33.9K | 1.93M | Nov 2006 – Apr 2026 |
| Terrell Unit G-3-146589 | Seneca Resources Corporation only | Clay, NE (Austin Chalk 11350) | Brazos | 1 | 33.9K | 816K | Jul 1993 – Aug 1999 |
| Fun O-3-25269 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 33.9K | 340K | Oct 2008 – Jan 2018 |
| MW-Brazos Unit O-3-22693 | Apache Corporation only | Giddings (Buda) | Brazos | 1 | 33.7K | 94.1K | Apr 1995 – Jan 2008 |
| Big River O-3-20563 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 1 | 33.6K | 36.6K | Jan 1993 – Jun 2001 |
| Bush-Stasny Unit O-3-21345 | Rme Petroleum Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 33.5K | 267K | Jan 1993 – Jul 2000 |
| Vince Court Unit O-3-18972 | Apache Corporation only | Kurten (Austin Chalk) | Brazos | 1 | 33.5K | 22.5K | Jan 1993 – Jun 2007 |
| Lenz Unit O-3-21475 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 33.1K | 270K | Jan 1993 – Aug 1999 |
| Ann Adams Melvin "a" Unit O-3-27431 | Vess Oil Corporation only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 33.1K | 0 | Jan 2019 – Apr 2026 |
| Dansby "C" O-3-20331 | 7711 Corporation, The only | Kurten (Buda) | Brazos | 1 | 33K | 47 | Jan 1993 – Nov 2002 |
| Tobola Oil Unit O-3-18488 | Ginger Petroleum Company, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 33K | 101K | Jan 1993 – Mar 2005 |
| Lott-Lee B WB O-3-28261 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 32.9K | 13.5K | Jan 2026 – Mar 2026 |
| Augusta O-3-25456 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 32.8K | 566K | Aug 2009 – Aug 2014 |
| Newberry HU O-3-22727 | Pioneer Natural Res. USA, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 32.7K | 48.2K | Oct 1994 – Jan 1999 |
| Wade-Havens Unit G-3-145128 | Southwest Resources, Inc. only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 32.7K | 753K | Feb 1993 – Nov 1997 |
| Bonano Unit II O-3-17870 | Wildfire Energy Operating LLC only | Kurten (Buda) | Brazos | 2 | 32.7K | 23.8K | Jan 1993 – Nov 2001 |
| Barrera O-3-23952 | Sandel Operating Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 32.7K | 419K | Mar 2001 – Jan 2019 |
| McCullough-Wineman AC O-3-27335 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 32K | 116K | Jan 2015 – Mar 2026 |
| Vista Ridge F O-3-25777 | Northfield Enterprises, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 31.4K | 7.9K | Jul 2010 – Apr 2019 |
| Fickey-Lard Unit O-3-21893 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 31.4K | 255K | Jan 1993 – Nov 1998 |
| Woolum O-3-25377 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 31.4K | 604K | May 2009 – Mar 2026 |
| Wilson, James D. O-3-19266 | Wildfire Energy Operating LLC only | Kurten (Woodbine) | Brazos | 1 | 31.3K | 24.3K | Jan 1993 – Jul 2015 |
| Richardson Unit O-3-15199 | Finley Resources, Inc. only | Kurten (Woodbine) | Brazos | 1 | 31.2K | 45 | Feb 1993 – Apr 2020 |
| Brazos Coal Limited O-3-21431 | Ogden Resources Corporation only | Giddings (Austin Chalk-3) | Brazos | 1 | 31.2K | 431K | Jan 1993 – Jun 2002 |
| Gifford-Hill "A" O-3-25006 | Wildfire Energy Operating LLC only | Cooks Point (Woodbine) | Brazos | 1 | 31K | 4.28K | Jul 2007 – Feb 2025 |
| Mahaffey O-3-22906 | Endeavor Energy Resources L.P. only | Giddings (Austin Chalk-3) | Brazos | 2 | 31K | 347K | Jan 1995 – Sep 2015 |
| Dr. Hank O-3-24852 | Bexco Operating, Inc. only | Kurten (Buda) | Brazos | 1 | 30.9K | 16.8K | Sep 2005 – Jul 2010 |
| Vista Ridge C O-3-19855 | Northfield Enterprises, Inc. only | Kurten (Buda) | Brazos | 2 | 30.4K | 18.1K | Jan 1993 – Apr 2018 |
| Foster, Mimi & Papa O-3-19426 | Magnolia Oil & Gas Operating LLC only | Kurten (Austin Chalk) | Brazos | 1 | 30K | 19 | Jan 1993 – Mar 2026 |
| McCullough No. 1 O-3-15188 | Reserve Production, Inc. only | Giddings (Austin Chalk-3) | Brazos | 2 | 29.9K | 238K | Jan 1993 – May 1996 |
| Birdwell Unit I O-3-17036 | Chaparral Energy, L.L.C. only | Iola, South (Sub-Clarksville) | Brazos | 2 | 29.5K | 64.6K | Jan 1993 – Nov 2006 |
| Mahaffey G-3-148164 | Snyder Oil Corporation only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 29.4K | 208K | Jan 1994 – Dec 1994 |
| Tauber Ranch Unit O-3-25203 | Unit Petroleum Company only | Kurten (Buda) | Brazos | 1 | 29.3K | 31.6K | Aug 2007 – Feb 2010 |
| Chester O-3-26318 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 29.2K | 7.78K | Aug 2013 – Mar 2026 |
| Walton OL G-3-155050 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 29K | 7.27M | Apr 1995 – Apr 2026 |
| Morello, Sam O-3-20550 | Wildhorse Resources Mngt Co, LLC only | Caldwell (Austin Chalk) | Brazos | 1 | 29K | 43.1K | Jan 1993 – Jul 2007 |
| Lloyd O-3-28238 | CML Exploration, LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 29K | 26.2K | Jul 2025 – Apr 2026 |