| Caldwell O-3-24825 | CML Exploration, LLC only | Kurten (Buda) | Brazos | 1 | 143K | 92.2K | May 2005 – Aug 2026 |
| Arhopulos-Caldwell O-5-4224 | Trestle Creek Properties, LLC only | Aguila Vado (Eagleford) | Brazos | 1 | 115K | 714K | Jan 2016 – Aug 2026 |
| Newberry O-3-20631 | Wildfire Energy Operating LLC only | Caldwell (Austin Chalk) | Brazos | 4 | 88.8K | 99.4K | by Jan 1993 – Dec 2002 |
| Reed-Newberry O-3-19180 | Endeavor Energy Resources L.P. only | Caldwell, NE (Georgetown) | Brazos | 1 | 78.1K | 78.7K | by Jan 1993 – Jul 2007 |
| Luther "A" O-3-22114 | Wildfire Energy Operating LLC only | Caldwell (Austin Chalk) | Brazos | 1 | 72.7K | 33.4K | Jul 1993 – Nov 2015 |
| Reed-Newberry "A" O-3-19831 | Endeavor Energy Resources L.P. only | Caldwell, NE (Georgetown) | Brazos | 1 | 70K | 63.4K | by Jan 1993 – Jul 2007 |
| Byington Holler O-3-18793 | Nbi Services, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 62.6K | 140K | by Jan 1993 – Jul 2007 |
| Dix, Ransom O-3-20885 | Apache Corporation only | Caldwell (Austin Chalk) | Brazos | 1 | 61.4K | 107K | by Jan 1993 – Jul 2012 |
| Ruffino, Preston Jr. "a" Unit O-3-22847 | Anadarko E&P Company LP only | Caldwell, NE (Georgetown) | Brazos | 1 | 55.3K | 61.9K | Jun 1995 – Nov 2003 |
| Big River O-3-19497 | Endeavor Energy Resources L.P. only | Caldwell, NE (Georgetown) | Brazos | 1 | 55.2K | 39.2K | by Jan 1993 – Jul 2007 |
| Mathis O-3-19376 | Wildfire Energy Operating LLC only | Caldwell (Austin Chalk) | Brazos | 1 | 54.9K | 309K | by Jan 1993 – Jul 2026 |
| Christopher #3 O-3-22153 | Northfield Enterprises, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 45.2K | 51.4K | May 1993 – Nov 2000 |
| Charli O-3-24949 | 7711 Corporation, The only | Caldwell, NE (Georgetown) | Brazos | 1 | 43.8K | 92.9K | Nov 2006 – Jul 2007 |
| David O-3-24950 | 7711 Corporation, The only | Caldwell, NE (Georgetown) | Brazos | 1 | 35.5K | 157K | Nov 2006 – Jul 2007 |
| Big River O-3-20563 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 1 | 33.6K | 36.6K | by Jan 1993 – Jun 2001 |
| Tobola Oil Unit O-3-18488 | Ginger Petroleum Company, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 33K | 101K | by Jan 1993 – Mar 2005 |
| Morello, Sam O-3-20550 | Wildhorse Resources Mngt Co, LLC only | Caldwell (Austin Chalk) | Brazos | 1 | 29K | 43.1K | by Jan 1993 – Jul 2007 |
| Smith, J. W. O-3-18846 | Geosouthern Energy Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 26.7K | 20 | by Jan 1993 – Jul 2007 |
| Lazarone, M. O-3-20548 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 1 | 19.5K | 17.3K | by Jan 1993 – Nov 2001 |
| Luther Unit O-3-22330 | Lonestar Pluggers, Inc. only | Caldwell (Austin Chalk) | Brazos | 1 | 19.5K | 19.8K | Mar 1994 – Sep 1999 |
| Varisco Estate O-3-21547 | Anadarko E&P Company LP only | Caldwell (Austin Chalk) | Brazos | 2 | 18.3K | 16.4K | by Jan 1993 – Aug 1995 |
| Hill, Gifford "A" O-3-18529 | Apache Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 16.6K | 39.6K | by Jan 1993 – May 1997 |
| Sims O-3-21458 | Chesapeake Operating, L.L.C. only | Caldwell (Austin Chalk) | Brazos | 1 | 16.4K | 15.9K | by Jan 1993 – Feb 2002 |
| Morello, Buddy O-3-21982 | Howell Petroleum Corporation only | Caldwell (Austin Chalk) | Brazos | 1 | 16.2K | 13.7K | by Jan 1993 – Sep 1999 |
| Court, Vince O-3-19017 | 7711 Corporation, The only | Caldwell, NE (Georgetown) | Brazos | 1 | 15.5K | 8.62K | by Jan 1993 – Dec 2001 |
| Kay, R. O-3-20549 | Howell Petroleum Corporation only | Caldwell (Austin Chalk) | Brazos | 1 | 15.4K | 6.55K | by Jan 1993 – Nov 2000 |
| Thumper O-3-24954 | 7711 Corporation, The only | Caldwell, NE (Georgetown) | Brazos | 1 | 12.8K | 8.03K | Oct 2006 – Jul 2007 |
| Varisco Estate O-3-23706 | Anadarko E&P Company LP only | Caldwell, NE (Georgetown) | Brazos | 1 | 11.8K | 6.83K | Jul 1999 – Apr 2002 |
| Salvato O-3-19323 | Apache Corporation only | Caldwell, NE (Georgetown) | Brazos | 2 | 11.7K | 14.1K | by Jan 1993 – Aug 2000 |
| Court, Vince O-3-19704 | Endeavor Energy Resources L.P. only | Caldwell, NE (Georgetown) | Brazos | 1 | 11.2K | 9 | Apr 1993 – Aug 2001 |
| Hill, Gifford O-3-17811 | Apache Corporation only | Caldwell, NE (Georgetown) | Brazos | 2 | 10.3K | 5.86K | Apr 1993 – Apr 1997 |
| Newberry O-3-23662 | Anadarko E&P Company LP only | Caldwell, NE (Georgetown) | Brazos | 1 | 10.1K | 14.7K | Apr 1999 – Mar 2002 |
| Bayne O-3-20646 | Fricke Production Company only | Caldwell (Austin Chalk) | Brazos | 1 | 6.11K | 67 | Feb 1993 – Aug 2002 |
| Caldwell, C.W. O-3-15722 | La Campana, Inc. only | Kurten (Woodbine) | Brazos | 1 | 4.04K | 19 | by Jan 1993 – May 2008 |
| Luther Unit O-3-18231 | Michael Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 2.95K | 2.88K | by Jan 1993 – Mar 1994 |
| Smith, J. W. O-3-18965 | Delaware Ecco Petroleum Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 2.32K | 1.06K | by Jan 1993 – Jun 1995 |
| Luther "A" O-3-18607 | Michael Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 1.09K | 1.65K | by Jan 1993 – Jun 1993 |
| MW-Brazos Unit O-3-22763 | MW Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 128 | 4.4K | Jul 1995 – Oct 1995 |
| Fazzino, L. O-3-17693 | Dynamic Production, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 977 | Feb 1993 – Feb 1993 |
| Little River O-3-19614 | Omni Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Angonia, D. O-3-19043 | Landmark Exploration Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Kay, R. O-3-18845 | Howell Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Morello, Buddy O-3-17972 | Howell Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Lazarone, M. O-3-17920 | Howell Petroleum Corporation only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Morello, Sam O-3-17845 | Anadarko E&P Company LP only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Osr-Torres SWD O-3-27141 | Texron Operating, LLC only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |
| Zemanek O-3-20041 | Dynamic Production, Inc. only | Caldwell, NE (Georgetown) | Brazos | 1 | 0 | 0 | — |