| University -DJ- R/a -A- O-10-33522 | Enervest Operating, L.L.C. | University Block 9 (Wolfcamp) | Andrews | 5 | 557K | 360K | Jan 1993 – Mar 2016 |
| Akin-Foxfire Unit O-3-22405 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 526K | 3.6M | Apr 1994 – Apr 2015 |
| Puryear 28 O-14-8564 | Enervest Operating, L.L.C. | Mills Ranch (Granite Wash Cons.) | Wheeler | 3 | 479K | 2.99M | Apr 2012 – Feb 2017 |
| Cochise Unit O-3-23340 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 306K | 1.56M | Aug 1997 – Apr 2018 |
| Donna W. O-3-22863 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 1 | 292K | 1.35M | Oct 1995 – Nov 2013 |
| 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 |
| Lovings-Kruse Unit O-3-21757 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 247K | 1.68M | Jan 1993 – Jul 2012 |
| Walther OL Unit O-3-21905 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 239K | 811K | Jan 1993 – Feb 2012 |
| Hanacek O-3-21826 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 208K | 916K | Jan 1993 – Feb 2013 |
| Cedar Creek "a" Amarado Unit O-3-21894 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 183K | 1.63M | Jan 1993 – Jul 2017 |
| Edgmon-Cameron Unit O-3-22383 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 1 | 182K | 1.56M | Mar 1994 – Jan 2011 |
| Arco Fee Unit A-917 O-6-13343 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 175K | 570K | Aug 1994 – Nov 2011 |
| Ansell-Stuermer O-3-22103 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 172K | 710K | May 1993 – Nov 2013 |
| 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 |
| Arco Fee Unit A-1001 O-6-13517 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 149K | 607K | Mar 1995 – Aug 2011 |
| Pawelek, Theresa O-2-10600 | Enervest Operating, L.L.C. | Labus (Austin) | Karnes | 1 | 142K | 640K | May 2013 – Jun 2018 |
| Bryan-College Station Unit O-3-22015 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 141K | 895K | Mar 1993 – Aug 2010 |
| Fischer Family Unit O-3-22788 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 137K | 1.17M | Apr 1995 – May 2013 |
| Vasek-Vasek Unit O-3-21387 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 136K | 569K | Jan 1993 – May 2012 |
| Pawelek, M. O-2-10281 | Enervest Operating, L.L.C. | Labus (Austin) | Karnes | 1 | 131K | 635K | May 2012 – Jul 2018 |
| Bohot-Divin Unit O-3-21731 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 129K | 1.36M | Jan 1993 – Jun 2016 |
| Boriskie-Diversified Unit O-3-22193 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 127K | 723K | Aug 1993 – Sep 2011 |
| Nan "C" O-3-22078 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 125K | 1.02M | Jun 1993 – Dec 2011 |
| Keeland Oil Unit O-3-21825 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 124K | 288K | Jan 1993 – May 2012 |
| Frances S. Unit O-3-16652 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 121K | 724K | Jan 1993 – Mar 2018 |
| Ritchey O-3-22232 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 117K | 1.11M | Nov 1993 – Oct 2014 |
| Janda-Amarado O-3-21903 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 116K | 483K | Jan 1993 – Jul 2009 |
| Garth Bates Oil Unit O-3-21347 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 113K | 327K | Jan 1993 – Apr 2017 |
| Huff 32 O-14-8539 | Enervest Operating, L.L.C. | Frye Ranch (Consolidated) | Wheeler | 2 | 113K | 1.37M | May 2011 – Feb 2018 |
| Neinast-McMahan Unit O-3-21616 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 110K | 633K | Jan 1993 – Aug 2017 |
| Putt-Putt Unit O-3-22299 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 109K | 538K | Jan 1994 – Nov 2007 |
| Reser-Sanders Unit O-3-22271 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 109K | 524K | Jan 1994 – Nov 2007 |
| Pyburn-Pyburn Unit O-3-21329 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 109K | 233K | Jan 1993 – Dec 2007 |
| Treatment Plant O-3-22551 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 105K | 559K | Sep 1994 – Jul 2009 |
| McCoy O-3-12627 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 2 | 99.7K | 930K | Jan 1993 – Aug 2010 |
| Brown Oil Unit #2 O-3-21746 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 97.5K | 868K | Jan 1993 – Oct 2009 |
| Sprankle O-3-22164 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 96.6K | 1.39M | Aug 1993 – Nov 2011 |
| Pecan Creek-Guenther O-3-22714 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 90.4K | 964K | Feb 1995 – Nov 2012 |
| Bing Unit O-3-17369 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 2 | 85.9K | 180K | Jan 1993 – Feb 2015 |
| Bscu USA 27328 O-6-13586 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Sabine | 1 | 85.6K | 365K | Apr 1996 – Apr 2011 |
| 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 |
| Goldapp-Withers O-3-22465 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 79.1K | 246K | Jun 1994 – Jan 2011 |
| Keng Unit O-3-22370 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 1 | 76.3K | 84.3K | Apr 1994 – Jun 2010 |
| Koenning-Caldwell Unit O-3-21902 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 74.1K | 222K | Jan 1993 – Mar 2015 |
| Hoefer-Smith Uint O-3-21512 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 73.5K | 282K | Jan 1993 – Feb 2018 |
| Washington Unit O-3-22508 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 72.2K | 564K | Jul 1994 – Oct 2010 |
| Jones-Foster Unit O-3-22302 | Enervest Operating, L.L.C. | Kurten (Buda) | Brazos | 1 | 66K | 173K | Dec 1993 – Apr 2016 |