Interaction between vessel, stinger, and pipeline during laying operations in high seas

Conference · Sun Dec 01 04:00:00 EST 1996

OSTI ID:400914

Clauss, G F; Saroukh, A ^[1]

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1. Berlin Univ. of Technology (Germany). Inst. of Naval Architecture and Ocean Engineering

During laying operations of offshore pipelines motions and dynamic loads in the seaway may become so severe that the laying process has to be interrupted. In the sag bend area pipe oscillations as well as the related tension variations and dynamic stresses are superimposed to the static bending/buckling conditions. In the overland area the flexible pipeline and its supporting long stinger are interacting due to the seaway, and related vessel motions, and impact loads are to be expected. This paper illustrates the necessity of defining boundary conditions based on dynamic analysis of pipeline, stinger and laying vessels. A method for predicting the dynamic response of an entire pipelaying system undergoing excitation from the sea is presented. The proposed method is based on model tests investigating the interaction between all components in a pipelaying system such as the layer barge (hydrodynamic compact structure), stinger and pipeline (hydrodynamic transparent structures) in high seas. As a result a validated numerical model is presented which combines vessel motions with pipeline dynamics by simulating a sophisticated multi-support stinger. The investigations may serve to define the limiting environmental conditions with reference to pipe design and operational conditions.

• OSTI ID: 400914
• Report Number(s): CONF-9606279--; ISBN 0-7918-1494-7
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
FLUID-STRUCTURE INTERACTIONS
IMPACT STRENGTH
INSTALLATION
MATHEMATICAL MODELS
NATURAL GAS
OFFSHORE SITES
PETROLEUM
PIPELINES
RESPONSE FUNCTIONS
SHIPS
STORMS
STRESS ANALYSIS
STRESSES
TRANSPORT