Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16129
Title: Modelling and analysis of riser-seabed interaction
Authors: CHIEW GEOK HAR
Keywords: riser,suction,touchdown zone,seabed interaction, modelling
Issue Date: 29-May-2007
Source: CHIEW GEOK HAR (2007-05-29). Modelling and analysis of riser-seabed interaction. ScholarBank@NUS Repository.
Abstract: With the wide popularity of the steel catenary riser (SCR), the feasibility of SCR in offshore projects is of great concern to the oil industry. Much research has gone into numerical modelling of the riser to analyse the riser behaviour and predict its fatigue life. Recent studies revealed that the riser fatigue hot spot occurs in the touchdown region and ROV surveys found deep trenches within a few months of riser installation. These findings underline the importance of riser-seabed. Current practice of using an elastic seabed may be too simplified to capture the complexity of the interaction. A material model has been developed to account for suction effect for the riser-seabed interaction. This model is incorporated in a finite element analysis software (Abaqus) to investigate the influence of suction and seabed geometry on riser response.
URI: http://scholarbank.nus.edu.sg/handle/10635/16129
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