Chevron U.s.a. Inc.

Hugh Miller Thompson

Edward Shintaro Nakajima

Sid A Mebarkia

Antonio Carlos Falcao Critsinelis

Estela Gonzalez

Noah Teichmiller

Jack Darryl Payne

Jonathan Bowman

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.

Systems and methods for protecting subsea pipeline from excessive stress or fatigue loading

A subsea removable flex joint laydown tool is described herein. The tool can include a body having a first portion and a second portion hingedly coupled to the first portion. The tool can also include a flex joint coupling feature disposed on an inner surface of the first portion and the second portion toward a proximal end of the body, where the flex joint coupling feature is configured to couple with a first laydown tool coupling feature of a flex joint. The tool can further include a riser coupling feature disposed on the inner surface of the first portion and the second portion toward a distal end of the body, where the riser coupling feature is configured to couple with a second laydown tool coupling feature of a riser. The tool can also include at least one laydown tool coupling feature movably coupled to the first portion.

Subsea removable flex joint laydown tool

Growing community of inventors

Houston, TX, United States of America

Hugh Miller Thompson