METHOD OF INSTALLING A TUBULAR UNDERSEA PIPELINE

摘要

The invention relates to an undersea installation for transporting hydrocarbons between a seabed and a surface and to a method for installing same. The installation comprises a tubular undersea pipeline, a float (14) and a coupling device (10). Said undersea pipeline has a rising part (16), a connecting part (18) and an intermediate portion (20). Said coupling device (10) comprises a first longitudinal part (24) and a second part (25) connected in a coupling region (37) of said first part (24), said coupling region (37) of said first longitudinal part and said float (14) being adapted to be connected together. Said first part (24) is adapted to pivot about said coupling region (37) while bending said intermediate portion (20) when said rising part (16) is unwound and tilts towards said seabed.