The thermal exchange coefficient between subsea soil and buried pipeline is a very important parameter for submarine pipeline design. It has a complex relationship with the heat conductivity coefficient of subsea soil and depth of pipeline buried below the seabed. To determine the thermal exchange coefficient, soil samples of different depth under seabed are sampled and tested. According to test results, 3.7W/(m2 K) of thermal exchange coefficient of subsea soil is recommended. To verify it, temperature drops of two submarine pipelines -SZ36-1 and BX submarine pipeline in Bohai Sea in China - are calculated and compared with practical temperature drop of two pipelines, respectively. The computational results are very close to practical results. It indicates that the recommended thermal exchange coefficient is suitable and reasonable for a submarine pipeline. It is very helpful for the designers and engineers to determine the crude oil temperature drop of submarine pipeline at the stage of pipeline design.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Determination of the Thermal Exchange Coefficient between Subsea Soil and Buried Submarine Pipeline


    Contributors:
    Zhang, Fan (author) / Ma, Yun (author) / Yin, Hongchao (author)

    Conference:

    International Conference on Pipelines and Trenchless Technology 2014 ; 2014 ; Xiamen, China


    Published in:

    ICPTT 2014 ; 276-282


    Publication date :

    2014-12-01




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Ship and method for measuring submarine buried pipeline

    LUO XIAOQIAO / YAO ZHIGUANG / CHUN MINGHAO et al. | European Patent Office | 2024

    Free access

    Challenges of Lowering a Live Subsea Buried Gas Pipeline by 6m

    Thusyanthan, N.I. / Willaims, K.A. / Selwood, T. et al. | British Library Conference Proceedings | 2014




    An Investigation into the Impact of Fishery on Buried Depth of Subsea Pipeline

    Cao, Song Rong ;Yu, Jian Xing ;Du, Zun Feng | Trans Tech Publications | 2011