Apparatus and method for sealing portions of a wellbore

摘要

An apparatus for controlling fluid flow in a borehole in an earth formation includes: a carrier configured to be deployed in the borehole; and a shape memory device disposed at the carrier, the shape memory device including a shape memory material having a glass transition temperature, the shape memory material configured to modify the glass transition temperature to a temperature lower than a borehole temperature in response to a trigger, and change from a glass state to a rubber state in response to the borehole temperature to prevent fluid flowing through the shape memory device.