| Akin-Foxfire Unit O-3-22405 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 526K | 3.6M | Apr 1994 – Apr 2015 |
| Adkins Unit O-3-22627 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 266K | 1.72M | Dec 1994 – Oct 2012 |
| Henry L. Allen Unit O-3-22231 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 248K | 1.11M | Oct 1993 – Aug 2009 |
| Millican-Glenn Unit O-3-22283 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 164K | 940K | Dec 1993 – Jun 2009 |
| Jones-Cashion Unit O-3-22632 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 157K | 799K | Dec 1994 – Aug 2013 |
| Bryan-College Station Unit O-3-22015 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 141K | 895K | Mar 1993 – Aug 2010 |
| Boriskie-Diversified Unit O-3-22193 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 127K | 723K | Aug 1993 – Sep 2011 |
| Ritchey O-3-22232 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 117K | 1.11M | Nov 1993 – Oct 2014 |
| Reser-Sanders Unit O-3-22271 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 109K | 524K | Jan 1994 – Nov 2007 |
| Treatment Plant O-3-22551 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 105K | 559K | Sep 1994 – Jul 2009 |
| Olden-Olden Unit O-3-21711 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 84K | 1.31M | Jan 1993 – Jul 2015 |
| Brazos Coal Ltd.-Raceway Ut. O-3-21668 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 81.2K | 679K | Jan 1993 – Jul 2013 |
| Jones-Foster Unit O-3-22302 | Enervest Operating, L.L.C. | Kurten (Buda) | Brazos | 1 | 66K | 173K | Dec 1993 – Apr 2016 |
| Reveille Unit O-3-22979 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 61.5K | 451K | Jan 1996 – Feb 2016 |
| Freeman-Creagor Unit O-3-22324 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 58.3K | 944K | Feb 1994 – Apr 2018 |
| Wheeler "B" O-3-21587 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 52.4K | 476K | Jan 1993 – Mar 2011 |
| Weedon-Weedon Unit O-3-21123 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 2 | 51.4K | 457K | Jan 1993 – Dec 2010 |
| Golden Triangle Unit O-3-21666 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 44.8K | 160K | Jan 1993 – Oct 2009 |
| Raceway O-3-23445 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 37.1K | 280K | Oct 1997 – Jun 2015 |
| Dominik-Holligan Unit O-3-21543 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 34.9K | 55.4K | Jan 1993 – Aug 2008 |
| H. L. Terry Unit O-3-23766 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 25.4K | 387K | Sep 1999 – Apr 2018 |
| Wheeler-Wheeler "a" Unit O-3-21724 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 21.4K | 104K | Jan 1993 – Apr 2017 |
| Wheeler-Wheeler 'B' Unit O-3-21678 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 19.1K | 124K | Jan 1993 – Nov 2013 |
| Jones, A.A. O-3-21133 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 6.68K | 214K | Jan 1993 – May 2012 |
| Terry-Terry Unit O-3-25216 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 5.81K | 33.1K | Jun 2008 – Jun 2012 |
| Akin, J.M. O-3-15257 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 699 | 9.66K | Jan 1993 – Feb 2015 |
| Treatment Plant G-3-245442 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 8.23K | Dec 2008 – Nov 2009 |
| Keyser, W. B. G-3-217803 | Enervest Operating, L.L.C. | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 0 | 582K | Feb 2006 – Oct 2009 |
| Rotello G-3-194609 | Enervest Operating, L.L.C. | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 0 | 1.74M | Apr 2003 – Feb 2011 |
| Wade, L. S. G-3-189074 | Enervest Operating, L.L.C. | Navasota River (Cretaceous Lwr.) | Brazos | 1 | 0 | 958K | Dec 2001 – Dec 2012 |
| A. M. Holligan Unit G-3-160219 | Enervest Operating, L.L.C. | Iola (Georgetown) | Brazos | 1 | 0 | 430K | Aug 1996 – Jul 2008 |
| Waltman G-3-154083 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 2.34M | Feb 1995 – Nov 2017 |
| Marrs-Quinn Unit G-3-151151 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 6.04M | Aug 1994 – Jun 2009 |
| Dunlap-Keyser Unit G-3-148011 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 1.77M | Nov 1993 – Feb 2011 |
| Lake-Smith Unit G-3-147607 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 1.42M | Oct 1993 – Oct 2017 |
| Tison-Geudry Unit G-3-146847 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 899K | Aug 1993 – Sep 2010 |
| Olden-Paull Unit G-3-145451 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 1.72M | Mar 1993 – Oct 2008 |
| Terry-Terry Unit G-3-143967 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 1.76M | Jan 1993 – Apr 2008 |
| McCullough-McCullough Unit G-3-143450 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 0 | 1.53M | Jan 1993 – May 2010 |