| Mar 24, 2020 | Martin "a" #135-139-01647 | Mountainside Energy Operating, LLC | Texas | Deepeninglatest filing: Amend | Guymon-Hugoton | 2,857 ft | SpuddedJan 1, 1945 |
| Dec 4, 2015 | J C Walter #1-1935-149-20066 | Mountainside Energy Operating, LLC | Washita | Recompletion | Atoka B | 15,800 ft | SpuddedJun 16, 1979 |
| Dec 15, 2010 | Grider #12 #135-139-23366 | Mountainside Energy Operating, LLC | Texas | Recompletion | Fort Riley Low, Fort Riley UP, Toronto | 7,200 ft | SpuddedAug 28, 2001 |
| Sep 9, 2008 | M.L. Guier #1R35-139-23309 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 2,804 ft | SpuddedMay 9, 2001 |
| Apr 16, 2008 | D.S. Lee (Nash a 1) #235-139-20363 | Mountainside Energy Operating, LLC | Texas | Re-entry | St Louis | 7,200 ft | SpuddedApr 27, 2008 |
| Apr 5, 2007 | E.J. Truesdell #135-139-00790 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,911 ft | Active |
| Sep 25, 2006 | Hitch Enterprises #7 #835-139-23586 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 6,000 ft | SpuddedFeb 17, 2003 |
| Sep 25, 2006 | Gladys #35 #135-139-23688 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 6,000 ft | SpuddedSep 13, 2003 |
| Apr 28, 2006 | Hudiburg Unit #135-139-00980 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,845 ft | SpuddedSep 2, 1945 |
| Apr 21, 2006 | Rudolph Johnson #135-139-00964 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,890 ft | SpuddedOct 8, 1945 |
| Apr 21, 2006 | Montgomery Unit (Montgomery a-1) #135-139-01807 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,875 ft | SpuddedFeb 16, 1945 |
| Apr 21, 2006 | Oklahoma "a" #135-139-01873 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,850 ft | SpuddedFeb 22, 1945 |
| Mar 9, 2006 | Enz, G.A. (G Enz) #135-139-01007 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,900 ft | SpuddedJun 13, 1946 |
| Feb 27, 2006 | W. H. Wacker (H W Wacker) #135-139-21870 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 5,950 ft | SpuddedMar 6, 1984 |
| Oct 27, 2005 | Davis-Hitch UT #135-139-00791 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,887 ft | Active |
| Oct 27, 2005 | Joyce Hitch #135-139-00800 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,887 ft | Active |
| Oct 27, 2005 | Raymond Smith UT #135-139-00966 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,847 ft | Active |
| Aug 17, 2005 | Roseberry Unit #135-139-00978 | Mountainside Energy Operating, LLC | Texas | Amend | Guymon-Hugoton | 2,850 ft | SpuddedSep 14, 1945 |
| Aug 1, 2005 | Tiger #1-535-139-22898 | Mountainside Energy Operating, LLC | Texas | Re-entry | Guymon-Hugoton | 3,500 ft | SpuddedDec 18, 1996 |
| Aug 1, 2005 | Wiggins B #2R35-139-24028 | Mountainside Energy Operating, LLC | Texas | New drill | Guymon-Hugoton | 2,960 ft | SpuddedFeb 5, 2006 |
| Aug 1, 2005 | Kate Jackson #2R35-139-24029 | Mountainside Energy Operating, LLC | Texas | New drill | Guymon-Hugoton | 2,960 ft | SpuddedJan 20, 2006 |
| Jun 24, 2005 | Patrick "B" #135-139-00818 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,900 ft | SpuddedSep 18, 1946 |
| Jun 9, 2005 | J E Wise #135-139-00770 | Mountainside Energy Operating, LLC | Texas | Re-entry | Guymon-Hugoton | 2,900 ft | SpuddedMay 25, 1945 |
| Jun 7, 2005 | B.H. Gleckler #135-139-00990 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,775 ft | SpuddedJul 1, 1946 |
| Jun 6, 2005 | J.E. Wise #235-139-35482 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 6,875 ft | SpuddedOct 31, 1963 |
| May 13, 2005 | Neville #6 #135-139-22700 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 7,101 ft | SpuddedDec 18, 1996 |
| Mar 23, 2005 | Brown-Safranko #135-139-00751 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,920 ft | SpuddedJan 19, 1950 |
| Feb 11, 2005 | Lee Willoughby Unit #135-139-00971 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,770 ft | SpuddedOct 22, 1945 |
| Feb 11, 2005 | R L Nesmith Unit #135-139-00972 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,778 ft | SpuddedOct 5, 1946 |
| Feb 11, 2005 | Minnie Matlick Unit #135-139-00979 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,860 ft | SpuddedNov 13, 1945 |
| Feb 11, 2005 | Rea Gill Unit #135-139-01665 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,757 ft | SpuddedJul 19, 1946 |
| Jan 12, 2005 | You-Gene #14 #135-139-23600 | Mountainside Energy Operating, LLC | Texas | Recompletion | Guymon-Hugoton | 7,100 ft | SpuddedMar 25, 2003 |
| Nov 18, 2004 | E.V. Phillips #135-139-00795 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,870 ft | SpuddedSep 11, 1947 |
| Nov 18, 2004 | John T Houser Unit #135-139-00973 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,850 ft | SpuddedNov 16, 1945 |
| Nov 15, 2004 | Olson A. Unit (Christian Olson) #135-139-00761 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,902 ft | SpuddedMay 6, 1946 |
| Nov 15, 2004 | Ray G. Keller UT #135-139-00763 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,866 ft | SpuddedAug 5, 1946 |
| Nov 15, 2004 | Wiggins "a" #135-139-00767 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,891 ft | Active |
| Nov 15, 2004 | Ralph E. Zarker Ut. #135-139-00798 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,886 ft | SpuddedJun 24, 1947 |
| Nov 15, 2004 | Hurliman "B" Unit #135-139-00970 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,712 ft | SpuddedOct 9, 1945 |
| Oct 27, 2004 | Leon Allen UT #135-139-00744 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,895 ft | SpuddedMay 15, 1946 |
| Jun 22, 2004 | Kate Jackson #135-139-00769 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,809 ft | SpuddedJun 3, 1945 |
| Jun 22, 2004 | Jack Curtis Unit #135-139-00983 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,797 ft | SpuddedSep 6, 1947 |
| Jun 22, 2004 | B.O. Perkins Unit #135-139-00984 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,795 ft | SpuddedAug 19, 2004 |
| Jun 22, 2004 | Porter Unit (Porter 1) #135-139-01672 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,795 ft | SpuddedOct 4, 1948 |
| Jun 14, 2004 | Patrick #1 A35-139-01808 | Mountainside Energy Operating, LLC | Texas | Deepeninglatest filing: Amend | Guymon-Hugoton | 2,865 ft | SpuddedMay 5, 1945 |
| Jun 14, 2004 | Enns Trust #24-135-139-22868 | Mountainside Energy Operating, LLC | Texas | Re-entry | Guymon-Hugoton | 3,393 ft | SpuddedJul 11, 2004 |
| May 7, 2004 | Charles Geery #135-139-00768 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,895 ft | SpuddedMar 18, 1945 |
| May 7, 2004 | A.J. Davidson #135-139-00981 | Mountainside Energy Operating, LLC | Texas | Deepeninglatest filing: Amend | Guymon-Hugoton | 2,809 ft | SpuddedJun 22, 1946 |
| May 7, 2004 | Martin "B" #135-139-01648 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,870 ft | SpuddedMar 10, 1945 |
| May 6, 2004 | Goss Unit #135-139-00764 | Mountainside Energy Operating, LLC | Texas | Deepening | Guymon-Hugoton | 2,865 ft | SpuddedMay 15, 1945 |