A device and a method for selective control of fluid flow between a flow pipe (14) of a well and surrounding rocks (12). The flow pipe (14) is provided with at least one flow-through particle filter (16) placed externally on the flow pipe (14) and between the flow pipe (14) and the rocks (12). The filter...http://www.google.de/patents/US20060266524?utm_source=gb-gplus-sharePatent US20060266524 - Device and a method for selective control of fluid flow between a well and surrounding rocks
