| Creek #970342-435-39400 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Leonard) | PluggedOil | 4,200 | Jul 24, 2012 | 1 | — |
| Hollenbeck #158542-413-32830 | Highmount Expl & Prod Texas LLC | SchleicherSawyer (Canyon) | PluggedGas | 8,500 | Mar 22, 2012 | 1 | Nov 2012 |
| University 54-23 #442-413-32746 | Highmount Expl & Prod Texas LLC | SchleicherOzona NE. (Canyon 7520) | PluggedGas | 8,700 | Mar 24, 2011 | 3 | — |
| University 57 2 #342-413-32743 | Highmount Expl & Prod Texas LLC | SchleicherSawyer (Canyon) | PluggedGas | 8,750 | Mar 18, 2011 | 3 | May 2011 |
| Marigliano #160842-413-32719 | Highmount Expl & Prod Texas LLC | SchleicherWildcat | PluggedGas | 8,400 | Dec 17, 2010 | 1 | — |
| Hollenbeck #158442-413-32699 | Highmount Expl & Prod Texas LLC | SchleicherSawyer (Canyon) | PluggedGas | 7,950 | Oct 22, 2010 | 1 | — |
| Mayer Edwin S. Jr. #142-435-30305 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 8,300 | Mar 25, 2010 | 1 | Nov 2005 |
| Epps 48 #542-435-39180 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 7,650 | Jun 26, 2009 | 1 | Jun 2010 |
| Epps H. C. #103842-435-30359 | Highmount Expl & Prod Texas LLC | SuttonHolman Ranch N (Penn) | PluggedGas | 8,000 | Apr 17, 2009 | 1 | Jan 2011 |
| Savell 119 #142-105-40901 | Highmount Expl & Prod Texas LLC | CrockettSawyer (Canyon) | PluggedGas | 11,500 | Oct 22, 2008 | 2 | — |
| Stewart #20742-435-39052 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 5,750 | Jul 30, 2008 | 1 | Oct 2010 |
| Stewart #20642-435-39046 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 5,750 | Jul 18, 2008 | 1 | Jul 2010 |
| Stewart #10442-435-38960 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,500 | Apr 18, 2008 | 2 | Oct 2010 |
| Evans 120 #342-413-32498 | Highmount Expl & Prod Texas LLC | SchleicherSonora (Canyon Upper) | PluggedGas | 7,400 | Dec 20, 2007 | 1 | Mar 2012 |
| Stewart 36 #442-435-38770 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 5,550 | Nov 16, 2007 | 1 | — |
| Renfro 45 #142-435-38731 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 8,975 | Oct 17, 2007 | 1 | — |
| University 54-25 #142-413-32410 | Highmount Expl & Prod Texas LLC | SchleicherOzona NE. (Canyon 7520) | PluggedGas | 8,250 | Oct 12, 2006 | 1 | Mar 2009 |
| Stanford 6 #142-413-32400 | Highmount Expl & Prod Texas LLC | SchleicherSawyer (Canyon) | PluggedGas | 8,200 | Sep 22, 2006 | 1 | — |
| Cauthorn Ranch 28 #142-435-37491 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 9,000 | Jun 29, 2005 | 1 | — |
| Fawcett Randee Trust B #1842-435-37443 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 9,000 | May 23, 2005 | 1 | Nov 2006 |
| Thomson #1342-435-37399 | Highmount Expl & Prod Texas LLC | SuttonSonora (Canyon Upper) | PluggedGas | 6,400 | Apr 22, 2005 | 1 | Sep 2009 |
| University 5416 #242-413-32248 | Highmount Expl & Prod Texas LLC | SchleicherOzona NE. (Canyon 7520) | PluggedGas | 7,900 | Dec 29, 2004 | 2 | May 2009 |
| University 5717 #242-413-32249 | Highmount Expl & Prod Texas LLC | SchleicherKama (Canyon) | PluggedGas | 7,900 | Dec 29, 2004 | 2 | Jun 2009 |
| Peterson 55 #1 X42-137-31770 | Highmount Expl & Prod Texas LLC | EdwardsSawyer (Canyon) | PluggedGas | 9,700 | Oct 19, 2004 | 2 | Mar 2009 |
| Creek #970142-435-36994 | Highmount Expl & Prod Texas LLC | SuttonSonora (Canyon Upper) | PluggedGas | 6,600 | Jul 23, 2004 | 2 | Mar 2009 |
| Askew 42 #642-435-36616 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,250 | Dec 22, 2003 | 1 | Dec 2012 |
| Martin #2442-435-36303 | Highmount Expl & Prod Texas LLC | SuttonSonora (Canyon Upper) | PluggedGas | 6,500 | Apr 17, 2003 | 1 | Feb 2008 |
| Mitchell Tom 1 #542-435-36291 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 8,700 | Apr 11, 2003 | 1 | Mar 2009 |
| Shurley #9442-435-36244 | Highmount Expl & Prod Texas LLC | SuttonFawcett (Wolfcamp) | PluggedGas | 6,100 | Mar 7, 2003 | 1 | Jan 2006 |
| Cauthorn Mack 129 #942-435-36212 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 7,000 | Feb 13, 2003 | 1 | Jul 2013 |
| Stewart 4 #342-435-36186 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 4,700 | Jan 31, 2003 | 1 | Jul 2008 |
| Shoubrouek Van #140142-105-38935 | Highmount Expl & Prod Texas LLC | CrockettSawyer (Canyon) | PluggedGas | 9,200 | Nov 12, 2002 | 1 | Jun 2009 |
| Mitchell Tom 1 #242-435-36030 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 7,600 | Sep 23, 2002 | 1 | Mar 2009 |
| Wallace 113 #142-435-36028 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,000 | Sep 20, 2002 | 1 | Mar 2009 |
| Fields 16 #1542-435-35579 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,200 | Jul 25, 2001 | 1 | Dec 2011 |
| Fields 57 #442-435-35199 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,100 | Aug 1, 2000 | 1 | Mar 2009 |
| Fields 51 #442-435-32042 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,000 | May 9, 2000 | 2 | Jan 2009 |
| Fields 57 #242-435-35119 | Highmount Expl & Prod Texas LLC | SuttonFawcett (Wolfcamp) | PluggedGas | 5,800 | Apr 11, 2000 | 1 | Mar 2009 |
| Vanderstucken 82 #142-435-35037 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 5,500 | Dec 29, 1999 | 1 | Dec 2002 |
| Aldwell-McPherson #242-435-34973 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 9,000 | Aug 23, 1999 | 1 | Dec 2011 |
| Dunbar Ned #3842-435-34883 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 7,000 | Jul 14, 1998 | 1 | Feb 2012 |
| Aldwell-McPherson #142-435-34871 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 8,800 | Jul 8, 1998 | 1 | Dec 2011 |
| Dunbar Ned #2842-435-34843 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,500 | May 13, 1998 | 1 | Jul 2006 |
| Foster Jr 81 #342-465-30581 | Highmount Expl & Prod Texas LLC | Val VerdeSimpson-Mann (Canyon) | PluggedGas | 5,950 | Apr 17, 1998 | 1 | Mar 2009 |
| Foster Jr 81 #142-465-30579 | Highmount Expl & Prod Texas LLC | Val VerdeSimpson-Mann (Canyon) | PluggedGas | 5,950 | Apr 3, 1998 | 1 | Mar 2009 |
| Foster J. R. 81 #242-465-30577 | Highmount Expl & Prod Texas LLC | Val VerdeSimpson-Mann (Canyon) | PluggedGas | 5,950 | Mar 16, 1998 | 1 | Mar 2009 |
| Jones 120 #1442-435-34734 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 6,350 | Jul 2, 1997 | 1 | Jul 2006 |
| Foster J.R. 82 #142-465-30553 | Highmount Expl & Prod Texas LLC | Val VerdeSimpson-Mann (Canyon) | PluggedGas | 6,200 | Jul 2, 1997 | 1 | Mar 2009 |
| Foster J.R. 82 #442-465-30554 | Highmount Expl & Prod Texas LLC | Val VerdeSimpson-Mann (Canyon) | PluggedGas | 6,200 | Jul 2, 1997 | 1 | May 2000 |
| Bloodworth 140 #642-435-34614 | Highmount Expl & Prod Texas LLC | SuttonSawyer (Canyon) | PluggedGas | 8,500 | Aug 8, 1996 | 1 | — |