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1. (WO2018060117) SYSTEM, METHOD, AND SLEEVE, FOR CLADDING AN UNDERGROUND WELLBORE PASSAGE

Pub. No.:    WO/2018/060117    International Application No.:    PCT/EP2017/074182
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Tue Sep 26 01:59:59 CEST 2017
IPC: E21B 29/10
E21B 33/12
E21B 33/128
E21B 33/13
Applicants: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
SHELL OIL COMPANY
Inventors: RUCKERT, Frank
Title: SYSTEM, METHOD, AND SLEEVE, FOR CLADDING AN UNDERGROUND WELLBORE PASSAGE
Abstract:
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.