METHOD OF EXPANDING A TUBULAR ELEMENT IN A WELLBORE

摘要

A method is provided of radially expanding a tubular element in a wellbore formed in an earth formation, the method comprising arranging the tubular element (4) in the wellbore whereby a lower end portion of the wall of the tubular element extends radially outward and in axially reverse direction so as to define an expanded tubular section (10) extending around a remaining tubular section of the tubular element (8), and axially extending the expanded tubular section by moving the remaining tubular section a selected distance downward relative to the expanded tubular section so that said lower end portion of the wall bends radially outward and in axially reverse direction. The remaining tubular section is axially extended at an upper end thereof with an extended tubular portion of a length at least equal to said distance of downward movement of the remaining tubular section.