无人生产平台管式分离系统撬装框架动力特性

针对某边际油田无人生产平台管式分离系统的运行压力和布置方式的特殊要求，提出一种支撑框架设计方案，并通过有限元法开展静力分析、模态分析和瞬态动力分析，以探究管式分离系统-支撑框架的静力和动力特性。结果表明：该支撑框架设计方案满足静刚度和强度要求；结构整体的特征频率不低于6.9 Hz,远高于管道内部段塞流动的冲击频率；尽管存在动力放大效应，但在段塞激励冲击下，结构的变形和应力符合动刚度和强度要求。

Dynamic Property of Skid-Mounted Frame of Unmanned Production Platform Tubular Separation System

In view of the special requirements of the operating pressure and layout of the tubular separation system of an unmanned production platform in a marginal oilfield, a support frame design scheme is presented, and the static analysis, modal analysis and transient analysis are carried out by finite element method to explore the static and dynamic mechanical properties of the tubular separation system-supported frame. The results show that: the design scheme of the support frame meets the requirements of static stiffness and strength; the characteristic frequency of the whole structure is not lower than 6.9 Hz, which is much higher than the intrinsic frequency of the slug flow inside the pipeline; although there is a dynamic amplification effect, the deformation and stress of the structure meet the requirements of dynamic stiffness and strength under the slug flow impact.