| Wintershall-Peters Unit O-3-21494 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 22.2K | 218K | Jan 1993 – Feb 2006 |
| David O-3-25025 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 22.2K | 178K | Aug 2007 – May 2015 |
| J. E. Weedon Unit O-3-21257 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 22.1K | 88.8K | Jan 1993 – Apr 1998 |
| Westlands G-3-153402 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 22.1K | 2.4M | Jan 1995 – Apr 2026 |
| Leon Cash Unit O-3-17382 | Apache Corporation only | Stone City (Austin Chalk) | Brazos | 1 | 22.1K | 43.4K | Jan 1993 – Jan 2008 |
| Dansby O-3-21816 | Baker, Brent Oil & Gas, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 22K | 210K | Jan 1993 – Apr 2000 |
| Nantucket Unit 1 O-5-4167 | Proven Natural Resources LLC only | Aguila Vado (Eagleford) | Brazos | 1 | 21.9K | 162K | Feb 2015 – Apr 2026 |
| Millican-Havens Unit G-3-147034 | McDaniel Company, Inc., The only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 21.9K | 621K | Aug 1993 – Feb 2000 |
| Jones-Ayers Unit O-3-21580 | Douglas Petroleum Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 21.8K | 103K | Jan 1993 – Oct 1997 |
| Guest O-3-25375 | Centex Energy, LLC only | Kurten (Woodbine) | Brazos | 1 | 21.8K | 14.5K | Jun 2009 – Mar 2018 |
| Lee -C- O-3-19121 | Anadarko E&P Company LP only | Kurten (Buda) | Brazos | 1 | 21.5K | 18.9K | Jan 1993 – Dec 2003 |
| Sby Partnership O-3-17914 | Northfield Enterprises, Inc. only | Kurten (Buda) | Brazos | 1 | 21.4K | 16.9K | Jan 1993 – May 2007 |
| Wheeler-Wheeler "a" Unit O-3-21724 | Enervest Operating, L.L.C. only | Giddings (Austin Chalk-3) | Brazos | 1 | 21.4K | 104K | Jan 1993 – Dec 2004 |
| Kavanaugh, M.S. O-3-17944 | Ramtex Energy LLC only | Aggieland (Woodbine) | Brazos | 1 | 21.4K | 288K | Jan 1993 – May 2016 |
| Marine, J. Unit I O-3-15434 | Torch Energy Services, Inc. only | Kurten (Buda) | Brazos | 1 | 21.3K | 91.1K | Jan 1993 – Oct 1999 |
| Burkhart, A.S. Ranch #3 O-3-19618 | Cameron, Paul E., Jr., Inc. only | Kurten (Buda) | Brazos | 1 | 21.1K | 25.8K | Jan 1993 – Jun 1997 |
| Richard Smith Unit III O-3-21079 | McDaniel Company, Inc., The only | Kurten (Buda) | Brazos | 1 | 21.1K | 43.9K | Dec 1993 – May 1997 |
| Lawrence O-3-21489 | Ames Oil Corporation of Texas only | Giddings (Austin Chalk-3) | Brazos | 1 | 21K | 62.7K | Jan 1993 – Apr 2001 |
| Rust Unit G-3-294000 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 21K | 392K | Mar 2022 – Mar 2026 |
| Taplin O-3-22792 | Ogden Resources Corporation only | Kurten (Buda) | Brazos | 1 | 20.9K | 34.6K | Sep 1995 – Nov 1995 |
| Gibson O-3-25667 | Proven Natural Resources LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 20.9K | 9.46K | Nov 2009 – Apr 2026 |
| Vince Court Unit A O-3-25136 | Wildfire Energy Operating LLC only | Giddings (Eagleford) | Brazos | 1 | 20.7K | 14.6K | Mar 2008 – Mar 2026 |
| Bright Sky Ranch "A" O-3-16764 | Southwest Resources, Inc. only | Kurten (Buda) | Brazos | 1 | 20.7K | 8.53K | Jan 1993 – Jul 2004 |
| Jimmie O-3-25738 | Wildfire Energy Operating LLC only | Giddings (Buda) | Brazos | 1 | 20.4K | 687K | Feb 2011 – Mar 2026 |
| Stern O-3-24884 | 7711 Corporation, The only | Kurten (Buda) | Brazos | 1 | 20.4K | 38.6K | Jan 2006 – Oct 2008 |
| Fridel O-3-28263 | CML Exploration, LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 20.4K | 10.8K | Aug 2025 – Apr 2026 |
| Lou (South) O-3-24773 | 7711 Corporation, The only | Kurten (Buda) | Brazos | 1 | 20.4K | 20.8K | Feb 2005 – Jan 2007 |
| Dansby-Dansby Unit O-3-21478 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 20.4K | 127K | Jan 1993 – Dec 1994 |
| Odom, W.F. Unit V O-3-17428 | CML Exploration, LLC only | Kurten (Buda) | Brazos | 1 | 20.3K | 20.3K | Jan 1993 – Jun 2007 |
| Dorotea Varisco Estate Unit O-3-17380 | Apache Corporation only | Stone City (Austin Chalk) | Brazos | 1 | 20.3K | 16.9K | Jan 1993 – Mar 2004 |
| Bvi-Little Unit O-3-21866 | Union Pacific Resources Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 20.3K | 25.7K | Jan 1993 – Mar 1997 |
| Lindley G-3-150332 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 1 | 19.8K | 6.64M | Jun 1994 – Apr 2026 |
| Cheree O-3-16586 | Cumming Company, Inc. The only | Kurten (Buda) | Brazos | 1 | 19.7K | 15.3K | Jan 1993 – Apr 2015 |
| Orca a WB O-3-28265 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 19.6K | 5.8K | Feb 2026 – Mar 2026 |
| Cobb Unit 5 O-3-17232 | Chaparral Energy, L.L.C. only | Iola, South (Sub-Clarksville) | Brazos | 1 | 19.6K | 46.9K | Jan 1993 – Mar 2006 |
| Luther Unit O-3-22330 | Lonestar Pluggers, Inc. only | Caldwell (Austin Chalk) | Brazos | 1 | 19.5K | 19.8K | Mar 1994 – Sep 1999 |
| Lazarone, M. O-3-20548 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 1 | 19.5K | 17.3K | Jan 1993 – Nov 2001 |
| Vilas G-3-155274 | Verdun Oil & Gas LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 19.5K | 314K | May 1994 – Nov 2024 |
| Woolum-Holligan Unit O-3-21428 | 7711 Corporation, The only | Giddings (Austin Chalk-3) | Brazos | 1 | 19.4K | 111K | Jan 1993 – Mar 1997 |
| Wilson, James D. O-3-11759 | Wildfire Energy Operating LLC only | Kurten (Woodbine) | Brazos | 1 | 19.2K | 5.43K | Jan 1993 – Mar 2010 |
| Wheeler-Wheeler 'B' Unit O-3-21678 | Enervest Operating, L.L.C. only | Giddings (Austin Chalk-3) | Brazos | 1 | 19.1K | 124K | Jan 1993 – Feb 2013 |
| Orca B WB O-3-28269 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 19.1K | 9.99K | Feb 2026 – Mar 2026 |
| Goss Trust O-3-23342 | Westport Oil and Gas Company, LP only | Iola (Georgetown) | Brazos | 1 | 18.7K | 692K | Sep 1997 – Oct 2002 |
| Cutbirth "A" O-3-20141 | Cago, Inc. only | Kurten (Buda) | Brazos | 1 | 18.6K | 14.2K | Jan 1993 – Sep 2002 |
| Walter O-3-24514 | 7711 Corporation, The only | Kurten (Buda) | Brazos | 1 | 18.4K | 15.4K | Feb 2004 – Apr 2006 |
| Gifford Hill "A" O-3-23244 | Apache Corporation only | Giddings (Austin Chalk-3) | Brazos | 1 | 18.4K | 7.79K | Jun 1997 – Jun 2007 |
| Varisco Estate O-3-21547 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 2 | 18.3K | 16.4K | Jan 1993 – Aug 1995 |
| Laura-Nichole G-3-189733 | Big Run Production Company only | Kurten (Georgetown) | Brazos | 1 | 18.3K | 471K | May 2002 – Apr 2026 |
| Dansby "A" O-3-20160 | McDaniel Company, Inc., The only | Kurten (Buda) | Brazos | 1 | 18.2K | 49 | Jan 1993 – Sep 2001 |
| Claude Brocksmith Unit O-3-26172 | Redbud E & P, Inc. only | Kurten (Woodbine) | Brazos | 1 | 18.2K | 0 | Oct 2011 – Apr 2026 |