Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wolfgang Friedrich Johann Deeg0
Harold J. Vinegar0
Kenneth Michael Cowan0
Sau-Wai Wong0
Billy John McKinzie0
Date of Patent
May 5, 2009
0Patent Application Number
114095570
Date Filed
April 21, 2006
0Patent Primary Examiner
Patent abstract
A barrier system for a subsurface treatment area is described. The barrier system includes a first barrier formed around at least a portion of the subsurface treatment area. The first barrier is configured to inhibit fluid from exiting or entering the subsurface treatment area. A second barrier is formed around at least a portion of the first barrier. A separation space exists between the first barrier and the second barrier.
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