公开(公告)号：US09663193B2

公开(公告)日：2017-05-30

申请号：US14249732

申请日：2014-04-10

Applicant: Chevron U.S.A. Inc.

Inventor： Antonio Carlos Falcao Critsinelis ,  Hugh Miller Thompson ,  Sid Ahmed Mebarkia ,  Edward Shintaro Nakajima ,  Estela Gonzalez

IPC: F16L1/24 ,  B63B22/00 ,  F16L57/02 ,  F17D5/00 ,  F16L1/12

CPC classification number: B63B22/00 ,  F16L1/123 ,  F16L1/24 ,  F16L57/02 ,  F17D5/00

Abstract: Disclosed are systems and methods for protecting subsea pipeline from damage caused by excessive stress or fatigue loading caused by geo-hazards, and environmental and operating loads. The systems and methods utilize lifting buoyancy modules capable of being attached to a section of subsea pipeline to lift the subsea pipeline off the seabed to a predetermined height over a predetermined length upon being activated by a planned or unplanned triggering event.