System, method, and sleeve, for cladding an underground wellbore passage

摘要

An inner surface of an underground wellbore or wellbore tubular is cladded by an elastic sleeve (1), which is placed by: - lowering the elastic sleeve (1) into the wellbore which sleeve is releasably connected to a stretching device (4) arranged within the sleeve (1) and stretched by the stretching device (4) in longitudinal direction thereby reducing its largest outer width such that it is less than the smallest width of the inner surface surrounding the elastic sleeve (1); - releasing the sleeve (1) from the stretching device (4) thereby enlarging the outer width of the sleeve (1) and cladding the sleeve (1) against the inner surface.