| Mayer Ranch 36 #642-435-39388 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Mar 7, 2012 | — | — |
| Moore 29 #142-413-32827 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveOil | 8,200 | Feb 24, 2012 | — | — |
| University Unit #203HHZ42-105-41428 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 5,722 | Feb 23, 2012 | — | — |
| Pate Unit #1 HHZ42-367-35255 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,630 | Feb 23, 2012 | — | — |
| Marigliano #160642-413-32702 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,350 | Feb 17, 2012 | — | — |
| Hill-Mayer Edwin S. Jr. MM #242-413-32821 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,413 | Feb 15, 2012 | — | — |
| University Unit #303HZ42-105-41410 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | PluggedOil | 11,756 | Feb 13, 2012 | — | — |
| Mayer Ranch PP #540242-413-32820 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,300 | Feb 13, 2012 | — | — |
| Mayer Edwin S. Jr. E #3542-413-32817 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,183 | Feb 9, 2012 | — | — |
| Powell 14 #642-413-32814 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | Temporarily abandonedGas | 8,403 | Jan 31, 2012 | — | — |
| Powell 4 #642-413-32815 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,300 | Jan 31, 2012 | — | — |
| Powell 7 #542-413-32816 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 31, 2012 | — | — |
| Powell 7 #242-413-32813 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 30, 2012 | — | — |
| Hollenbeck a #560142-413-32808 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,100 | Jan 18, 2012 | — | — |
| Marigliano #150342-413-32806 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,270 | Jan 13, 2012 | — | — |
| Mayer Ranch 40 #242-435-39380 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,500 | Jan 5, 2012 | — | — |
| O Dowd Unit #3 HHZ42-251-34464 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,716 | Dec 27, 2011 | — | — |
| O Dowd Unit #4 HHZ42-251-34465 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,631 | Dec 23, 2011 | — | — |
| University Unit #305HHZ42-105-41370 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 5,740 | Dec 20, 2011 | — | — |
| Brice Unit #5 HHZ42-251-34463 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,403 | Dec 20, 2011 | — | — |
| University Unit #302HHZ42-105-41368 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 3,862 | Dec 16, 2011 | — | — |
| King #14 HHZ42-251-34459 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,496 | Dec 14, 2011 | — | — |
| Marigliano #1401HZ42-413-32797 | Upp Operating LLC | Schleicher, TXFawcett (Wolfcamp) | ActiveOil | 7,250 | Dec 6, 2011 | — | — |
| University Unit #110242-105-41358 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 7,800 | Dec 1, 2011 | — | — |
| Powell 15 #142-413-32794 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,343 | Dec 1, 2011 | — | — |
| Glasscock H.E. et al #285HHZ42-435-39372 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,415 | Nov 17, 2011 | — | — |
| Mertz #100142-413-32786 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveOil | 7,790 | Nov 3, 2011 | — | — |
| Richardson 139 #1042-435-36674 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,350 | Oct 4, 2011 | — | — |
| University Unit #903HHZ42-105-41341 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 5,687 | Oct 3, 2011 | — | — |
| University Unit #080242-105-41338 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 7,907 | Sep 30, 2011 | — | — |
| University Unit #110142-105-41332 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 7,932 | Sep 29, 2011 | — | — |
| University Unit #230142-105-41334 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 7,847 | Sep 29, 2011 | — | — |
| University Unit #240142-105-41337 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 7,800 | Sep 29, 2011 | — | — |
| Reynolds 25 #242-413-32779 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,000 | Sep 28, 2011 | — | — |
| University 55 10 #142-413-32654 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | Shut inOil | 8,180 | Sep 26, 2011 | — | — |
| Fisher 132 #342-435-39371 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,858 | Sep 22, 2011 | — | — |
| University 55 10 #5HHZ42-413-32771 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveOil | 5,141 | Sep 8, 2011 | — | — |
| Simmons Ranch #7442-435-36762 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,950 | Sep 7, 2011 | — | — |
| Rimel #542-435-38294 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,170 | Aug 19, 2011 | — | — |
| R. Scott #2HHZ42-497-37333 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 6,999 | Jul 25, 2011 | — | — |
| Marigliano #250542-413-32768 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,404 | Jul 21, 2011 | — | — |
| Mayer Ranch 40 #1342-435-39357 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,599 | Jul 21, 2011 | — | — |
| University Unit #120242-105-41300 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 8,153 | Jul 19, 2011 | — | — |
| University 57 2 #242-413-32767 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveOil | 7,814 | Jul 18, 2011 | — | — |
| University Unit #080142-105-41301 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveOil | 8,153 | Jul 15, 2011 | — | — |
| University 54 23 #242-413-32765 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 7,809 | Jul 15, 2011 | — | — |
| University 57 3 #442-413-32760 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 7,682 | Jun 22, 2011 | — | — |
| Reinhardt 6 #1142-435-36733 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,285 | Jun 20, 2011 | — | — |
| Wilson Duke #171342-435-36589 | Upp Operating LLC | Sutton, TXFawcett (Wolfcamp) | ActiveGas | 8,650 | May 31, 2011 | — | — |
| Fisher 131 #142-435-39352 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,300 | May 12, 2011 | — | — |