AN ARRANGEMENT AND A METHOD FOR THE INSTALLATION OF DATA AND ELECTRICAL TRANSMISSION LINES ON A STEEL LAZY WAVE RISER (SLWR)

    公开(公告)号:WO2022269372A1

    公开(公告)日:2022-12-29

    申请号:PCT/IB2022/053269

    申请日:2022-04-07

    Applicant: SAIPEM S.P.A.

    Abstract: An arrangement (1) of an umbilical (19) of data communication lines and/or electrical energy transmission lines mounted on a lazy wave catenary riser (2) wherein the umbilical (19) has a first umbilical section (20) extending from an upper hang off location (4) of the riser (2) continuously downward to a first installation point (21) at the riser (2) and a second umbilical section (22) extending from a second installation point (23) at the riser (2) continuously downward to the sea bed (17) at a touch down location (16) of the riser (2), wherein the first installation point (21) is positioned in an installation region (24) of the riser (2) between a lowest sag bend point (7) and a highest hog bend point (12) of the lazy wave catenary riser (2) extension, and the first umbilical section (20) is tensioned to a flatter catenary shape than a catenary shape of the riser (2) between the upper hang off location (4) and the first installation point (21), so that between the upper hang off location (4) and the first installation point (21 ) the first umbilical section (20) extends at a distance and detached from the riser (2).

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