A subsea pipeline (10) of pipe-in-pipe configuration comprises an inner pipe (14), an outer pipe (16) spaced radially from the inner pipe and an annulus (20) defined by the radial spacing between the inner and outer pipes. A series of longitudinally-spaced outward projections (22) extend radially outwardly into the annulus from the inner pipe and are movable longitudinally relative to the outer pipe. A corresponding series of longitudinally-spaced inward projections (24) extend radially inwardly into the annulus from the outer pipe and are movable longitudinally relative to the inner pipe. When the inner pipe is subject to thermal elongation or contraction in use of the pipeline, the inner pipe is movable longitudinally relative to the outer pipe, hence moving the outward projections between and relative to the inward projections. The pipeline may be buried to restrain the outer pipe. The annulus may be flooded, in which case the inner pipe is covered with wet insulation.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Mitigation of buckling in subsea pipe-in-pipe systems


    Erscheinungsdatum :

    29.01.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Indentation and external pressure on subsea single wall pipe and pipe-in-pipe

    Zheng, Jiexin / Palmer, Andrew / Brunning, Paul et al. | Tema Archiv | 2014


    How to stabilize subsea pipe lines

    Corbishley, T. | Tema Archiv | 1982


    Lateral buckling of bundled pipe systems

    Vaz, M.A. / Patel, M.H. | British Library Online Contents | 1999


    Emergency pipe line repair connects subsea pipe lines. Part 1

    Lerique, M.P. / Thiberge, P. / Wright, N. | Tema Archiv | 1990


    Subsea pipeline maintenance pipe-lifting frame

    LIN SHOUQIANG / QU YOUJIE / LIU YU et al. | Europäisches Patentamt | 2020

    Freier Zugriff