SYSTEM AND METHOD FOR RADIALLY EXPANDING A TUBULAR ELEMENT
摘要
The invention discloses a system (fig.1) and a method for lining a wellbore. The system comprises a drill string (20) for drilling the wellbore; an expandable tubular element (84) enclosing the drill string (20), wherein a lower end portion of a wall of the expandable tubular element (14) is bent radially outward and in axially reverse direction to define an expanded tubular section (10) extending around an unexpanded tubular section (8); a pushing device (42) for pushing the unexpanded tubular section (8) into the expanded tubular section (10); and a releasable drilling annulus sealing device (70) for closing an annular opening between an upper end of the expandable tubular element and the drill string.
申请公布号
WO2012059574(A1)
申请公布日期
2012.05.10
申请号
WO2011EP69404
申请日期
2011.11.04
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;KRIESELS, PETRUS, CORNELIS;DALLA LONGA, FRANCESCO