螺旋列板式涡激振动抑制装置的隔热作用对浮式平台工艺的影响分析

Impact Analysis for Thermal Insulation of Helical StrakeVIV suppression Device on Floating Platform Process

深水浮式平台立管受涡激振动影响通常在外侧覆盖有涡激振动(VIV)抑制装置,受装置安装方式以及材质性能影响,螺旋列板式VIV抑制装置将对立管内的混输流体产生一定的隔热作用,从而影响立管内混输流体的温降变化。以南海某深水半潜式生产平台为例,深入阐述立管终端由于隔热导致的温度变化对浮式平台的工艺流程以及工艺设施的影响,同时鉴于我国目前深水浮式平台设计经验有限,若前期设计忽视此因素影响,将在投产后对平台设施造成巨大安全隐患。

Under the influence of vortex induced vibration,the riser of deep-water floating platform is usually covered with VIV suppression device,also under the influence of the installation method and material performance of the device,the helical strake VIV suppression device has a certain heat insulation effect on the multi-phase flow in the riser,thus affecting the temperature drop.In this article,the thermodynamic influence of helical strake VIV suppression device will be detailed analyzed,and taking a deep-water semi-submersible production platform in the South China Sea as an example,the technological influence of temperature change at the end of the riser on the floating platform will be discussed in depth,At the same time,in view of the limited design experience of deepwater floating platform in China,if this factor is ignored in the preliminary design,it will cause huge security risks to the platform facilities after commissioning.