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    • 2. 发明申请
    • METHOD AND APPARATUS FOR LOWERING A SUBSEA STRUCTURE BETWEEN THE SURFACE AND THE SEABED
    • 降低表面与海绵之间的结构的方法和装置
    • WO2009063159A1
    • 2009-05-22
    • PCT/GB2008/003470
    • 2008-10-13
    • TECHNIP FRANCE SAWESTLAKE, PaulPRESLEY, Barry
    • WESTLAKE, PaulPRESLEY, Barry
    • E21B17/01B63B21/50B63B22/02F16L1/16F16L1/20
    • E21B17/012B63B27/02B63B27/10B63C11/00
    • A method of lowering a subsea structure to the seabed comprising the steps of:- providing at least one buoyancy element on or connected to the subsea structure, said at least one buoyancy element comprising one or more chambers containing a buoyancy fluid comprising a substantially incompressible fluid having a density less than that of sea water; providing a reservoir for said buoyancy fluid at a location remote from said subsea structure; providing fluid communication between said reservoir and said one or more chambers of said at least one buoyancy element; transferring said buoyancy fluid between said reservoir and said one or more chambers of said at least one buoyancy element to vary the volume of buoyancy fluid within the at least one buoyancy element and thus vary the overall buoyancy of the subsea structure to thereby initiate and subsequently control the rate of descent of the subsea structure.
    • 一种将海底结构降低到海底的方法,包括以下步骤: - 在海底结构上或连接到海底结构上提供至少一个浮力元件,所述至少一个浮力元件包括一个或多个包含浮力流体的室,该浮力流体包括基本上不可压缩的流体 密度小于海水密度; 在远离所述海底结构的位置处为所述浮力流体提供储存器; 在所述储存器和所述至少一个浮力元件的所述一个或多个室之间提供流体连通; 将所述浮力流体在所述储存器和所述至少一个浮力元件的所述一个或多个室之间传递,以改变所述至少一个浮力元件内的浮力流体的体积,并因此改变所述海底结构的整体浮力从而启动和随后控制 海底结构的下降率。