According to the structural performance and economic benefits, steel lazy-wave risers (SLWRs) are developed to reduce deepwater riser’s top-end tension and decouple vessel motion from the touchdown zone (TDZ). In riser design, its fatigue life estimation is very essential. In this paper, a simplified solution is put forward to conduct an effective estimation on the static stress range of deepwater steel lazy-wave riser with vessel slow drift motion and ocean current. Considering the boundary-layer effect, SLWR configuration is artificially divided into three segments to investigate. Vessel slow draft motion is imposed on the riser hang-off point to gain its axial stress range on the condition that the riser overall length remains constant. An illustrative example analysis of a SLWR in a water depth of 1248 m is conducted to verify the accuracy and feasibility of the proposed approach by performing a comparison with the results calculated by the commercial package OrcaFlex.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effective static stress range estimation for deepwater steel lazy-wave riser with vessel slow drift motion


    Contributors:

    Published in:

    Publication date :

    2019-11-17


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Numerical analysis of configuration for steel lazy-wave riser in deepwater

    Chen, Leilei / Gu, Jijun / Jia, Jichuan et al. | Taylor & Francis Verlag | 2023


    DEEPWATER DISCONNECTABLE TURRET SYSTEM WITH LAZY WAVE RIGID RISER CONFIGURATION

    TSAO PEJMIN / LAVANYA FILIPP | European Patent Office | 2018

    Free access

    Deepwater disconnectable turret system with lazy wave rigid riser configuration

    CAO PEIMIN / LAVAGNA PHILIPPE | European Patent Office | 2018

    Free access

    DEEPWATER DISCONNECTABLE TURRET SYSTEM WITH LAZY WAVE RIGID RISER CONFIGURATION

    CAO PEIMIN / LAVAGNA PHILIPPE | European Patent Office | 2021

    Free access