Patent ID: 8727041
Filing Date: 2014-05-20
Classification: E21B

Abstract:
1. An expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a longitudinal bore and at least one opening in a wall of the tubular body; at least one member positioned within the at least one opening in the wall of the tubular body, the at least one member configured to move between a retracted position and an extended position; and a sleeve member disposed in the tubular body and having a longitudinal bore forming a fluid passageway through the sleeve member to allow fluid to flow therethrough, the sleeve member comprising a constricted portion of the longitudinal bore having a cross-sectional area less than a cross-sectional area of an adjacent portion of the longitudinal bore, the constricted portion constricting the fluid passageway through the sleeve member to enable displacement of the sleeve member in a downhole direction responsive to a selected flow rate to a displaced position, wherein: the sleeve member further comprises a guide portion configured to travel along a shoulder formed within the longitudinal bore of the tubular body when the sleeve member is moved between the initial position and the displaced portion.