Patent ID: 8267184
Filing Date: 2012-09-18
Classification: E21B

Abstract:
1. A method of radially expanding a tubular element extending into a wellbore formed in an earth formation, the method comprising inducing the wall of the tubular element to bend radially outward and in an axially reverse direction so as to form an expanded tubular section extending around a remaining tubular section of the tubular element, wherein said bending occurs in a bending zone of the tubular element; and inducing the bending zone to move in an axial direction relative to the remaining tubular section so as to increase the length of the expanded tubular section; wherein an annular space is formed between the expanded tubular section and the remaining tubular section, and wherein the method further comprises arranging a seal element in the annular space to define an upper portion and a lower portion of the annular space, said upper and lower portions being sealed from each other by the seal element.