| Akin-Foxfire Unit O-3-22405 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 526K | 3.6M | Apr 1994 – Jun 2013 |
| Cochise Unit O-3-23340 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 306K | 1.56M | Aug 1997 – Apr 2017 |
| Donna W. O-3-22863 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 1 | 292K | 1.35M | Oct 1995 – Sep 2012 |
| Adkins Unit O-3-22627 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 266K | 1.72M | Dec 1994 – Aug 2012 |
| Terry-Terry Unit G-3-143967 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 263K | 1.76M | by Jan 1993 – Feb 2008 |
| Henry L. Allen Unit O-3-22231 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 248K | 1.11M | Oct 1993 – May 2008 |
| Lovings-Kruse Unit O-3-21757 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 247K | 1.68M | by Jan 1993 – Jan 2012 |
| Cedar Creek "B" Amarado Unit G-3-146831 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Fayette | 1 | 243K | 2.33M | Jul 1993 – Aug 2009 |
| Walther OL Unit O-3-21905 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 239K | 811K | by Jan 1993 – Sep 2011 |
| Waltman G-3-154083 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 239K | 2.34M | Mar 1995 – Feb 2017 |
| Patricia-O.L. Unit G-3-147069 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Fayette | 1 | 229K | 2.86M | Oct 1993 – Sep 2010 |
| Hanacek O-3-21826 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 208K | 916K | by Jan 1993 – Aug 2012 |
| Cedar Creek "a" Amarado Unit O-3-21894 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 183K | 1.63M | by Jan 1993 – Jun 2016 |
| Edgmon-Cameron Unit O-3-22383 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 1 | 182K | 1.56M | Mar 1994 – Oct 2007 |
| McCullough-McCullough Unit G-3-143450 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 181K | 1.53M | by Jan 1993 – Apr 2010 |
| Arco Fee Unit A-917 O-6-13343 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 175K | 570K | Aug 1994 – Nov 2005 |
| Ansell-Stuermer O-3-22103 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 172K | 710K | May 1993 – May 2011 |
| Millican-Glenn Unit O-3-22283 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 164K | 940K | Dec 1993 – Nov 2008 |
| Arco Fee Unit A-228 G-6-153489 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Newton | 1 | 163K | 2.16M | May 1994 – Nov 2001 |
| Jones-Cashion Unit O-3-22632 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 157K | 799K | Dec 1994 – Nov 2012 |
| Arco Fee Unit A-1001 O-6-13517 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 149K | 607K | Mar 1995 – Nov 2005 |
| Pawelek, Theresa O-2-10600 | Enervest Operating, L.L.C. | Labus (Austin) | Karnes | 1 | 142K | 640K | May 2013 – Nov 2017 |
| Bryan-College Station Unit O-3-22015 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 141K | 895K | Mar 1993 – Oct 2009 |
| Moonstone-O.L. Unit G-3-149109 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Fayette | 1 | 140K | 4.1M | Feb 1994 – Dec 2006 |
| Arco-Fee A-259 G-6-153653 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 139K | 2.34M | Nov 1994 – Oct 2006 |
| Fischer Family Unit O-3-22788 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 137K | 1.17M | May 1995 – Jul 2005 |
| Vasek-Vasek Unit O-3-21387 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 136K | 569K | by Jan 1993 – Apr 2011 |
| Lake-Smith Unit G-3-147607 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 132K | 1.42M | Nov 1993 – Nov 2012 |
| Gaubatz-Yegua Unit G-3-145218 | Enervest Operating, L.L.C. | Clay, NE (Austin Chalk 11350) | Burleson | 1 | 132K | 3.13M | Mar 1993 – Sep 2008 |
| Pawelek, M. O-2-10281 | Enervest Operating, L.L.C. | Labus (Austin) | Karnes | 1 | 131K | 635K | May 2012 – Nov 2017 |
| Bohot-Divin Unit O-3-21731 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 129K | 1.36M | by 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 – Jan 2011 |
| Nan "C" O-3-22078 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 125K | 1.02M | Jun 1993 – Dec 2010 |
| Keeland Oil Unit O-3-21825 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 124K | 288K | by Jan 1993 – Dec 2008 |
| Frances S. Unit O-3-16652 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 121K | 724K | by Jan 1993 – Feb 2016 |
| Ritchey O-3-22232 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 117K | 1.11M | Nov 1993 – Jun 2013 |
| Janda-Amarado O-3-21903 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 116K | 483K | by Jan 1993 – Feb 2009 |
| N. Hilton Unit A-350 G-6-181723 | Enervest Operating, L.L.C. | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 115K | 2.49M | Jan 2001 – Feb 2008 |
| Garth Bates Oil Unit O-3-21347 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 113K | 327K | by Jan 1993 – Feb 2015 |
| Olden-Paull Unit G-3-145451 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 112K | 1.72M | Mar 1993 – Sep 2008 |
| Marrs-Quinn Unit G-3-151151 | Enervest Operating, L.L.C. | Giddings (Austin Chalk, Gas) | Brazos | 1 | 111K | 6.04M | Aug 1994 – Feb 2009 |
| Neinast-McMahan Unit O-3-21616 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Washington | 1 | 110K | 633K | by Jan 1993 – May 2006 |
| Putt-Putt Unit O-3-22299 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 109K | 538K | Jan 1994 – Sep 2000 |
| Reser-Sanders Unit O-3-22271 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 109K | 524K | Jan 1994 – Jan 2007 |
| Pyburn-Pyburn Unit O-3-21329 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 109K | 233K | by Jan 1993 – Aug 2000 |
| Treatment Plant O-3-22551 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Brazos | 1 | 105K | 559K | Sep 1994 – Nov 2008 |
| See-Huggins Unit G-3-145491 | Enervest Operating, L.L.C. | Clay, NE (Austin Chalk 11350) | Burleson | 1 | 104K | 2.18M | Feb 1993 – Jun 2012 |
| See-Yegua Unit G-3-142842 | Enervest Operating, L.L.C. | Clay, NE (Austin Chalk 11350) | Burleson | 1 | 101K | 2.22M | by Jan 1993 – Sep 2007 |
| McCoy O-3-12627 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Lee | 2 | 99.7K | 930K | by Jan 1993 – Jul 2007 |
| Brown Oil Unit #2 O-3-21746 | Enervest Operating, L.L.C. | Giddings (Austin Chalk-3) | Fayette | 1 | 97.5K | 868K | by Jan 1993 – Mar 2008 |