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...http://www.google.es/patents/US20070137856?utm_source=gb-gplus-sharePatente US20070137856 - Double barrier system for an in situ conversion process
Double barrier system for an in situ conversion process
Número de solicitud: 11/409,557 Número de publicación: US 2007/0137856 A1 Fecha de presentación: 21 Abr 2006 Patente emitida: US7527094 ( Fecha de emisión 5 May 2009)
