Patent ID: 6725918
Filing Date: 2004-04-27
Classification: E21B

Abstract:
A tool for radially deforming a tubular structure within a subterranean well, the tool comprising:a generally tubular mandrel coaxially disposable within the tubular structure and having an internal fluid passage; an annular member carried externally on the mandrel, the member extending radially outwardly toward the tublar structure when the member is axially compressed; and a piston responsive to fluid pressure in the fluid passage to axially compress the member in a manner causing the axially compressed member to forcibly engage and radially outwardly deform a longitudinal portion of the tubular structure, the piston being movable from a first position in a first axial direction in response to fluid pressure in the fluid passage to axially compress the member and, in response to a reduction in fluid pressure in the fluid passage, being permitted to return to the first position to remove its axial force on the member.