公开(公告)号：US11280174B2

公开(公告)日：2022-03-22

申请号：US16611352

申请日：2018-05-08

Applicant: SAIPEM S.P.A.

Inventor： Paolo Mario Alessandro Allara ,  Davide Maria Gaviraghi ,  Giuseppe Battista Abbate

IPC: E21B47/001 ,  E21B47/13 ,  E21B47/07 ,  E21B17/01 ,  E21B47/06 ,  E21B47/007

Abstract: A method for determining the shape and position of an underwater riser extending from a floating platform includes calculating a deformed shape of the riser by means of a numerical model of the deformed shape of the riser as a function of a plurality of acceleration values and of a plurality of position values in predetermined points of the riser, detecting acceleration values of the riser in a plurality of detection points along a longitudinal extension of the riser, detecting the water pressure values in at least some of the detection points, and calculating the position values as a function of the measured water pressure values.