Creating a local residual curvature during S-lay pipeline installation by lowering the stinger

Marine pipelines are often operated at high internal pressure and temperature. This loading condition results in the development of axial compressive forces that can cause the pipeline to buckle globally. Global buckling occurs when significant lateral motion is present in the pipeline and excessive feed-in occurs at that specific location,...

Vessel motion based criteria for pipeline Abandonment and Recovery operations

Offshore pipeline installation is limited by pipeline integrity during the laying process. Pipeline integrity is evaluated with the help of buckling checks, which help determining the feasibility of pipeline installation for a given sea condition. The operational limit of pipeline installation is determined during project preparation, by...

Pipeline Rotation Analysis & Modeling During S-Lay Installation

The safety of offshore pipelines during installation has drawn a great deal of attention due to the combined actions of high external pressure, axial tension and bending moment. Subsea pipelines have the tendency to rotate during installation. This rotation can have multiple causes which are interfering with each other. During S-lay installation...