超高强钢对导管架平台替换设计研究

Substitution Design of a Jacket Platform with Ultra-High Strength Steel

随着南海陆坡区域的更多油气发现,200〜350 m深水导管架在南海应用将更加广泛,最小屈服强度为355〜460 MPa级别钢材在深水导管架平台上的应用势在必行。本文以我国南海某已建导管架平台为实例,采用420 MPa的超高强钢对导管架和上部组块钢材开展替换设计,与原设计方案关键技术指标进行比对,提出了一套可行的超高强钢导管架平台结构设计方案,并针对后续超高强钢在导管架平台上的应用给出了建议。

With more oil and gas discovery in the continental area of the South China Sea,the application of the deepwater jacket at a water depth of 200-350 m will become more extensive.It is imperative to apply steel with a minimum yield strength of 355-460 MPa in the structure of deepwater jacket platforms.Therefore,this paper,taking an existing jacket platform in the South China Sea as an example,proposes a feasible jacket platform scheme to substitute the jacket platform structure with the 420 MPa ultra-high strength steel.It compares the key technical indexes of the proposed scheme with the original design scheme and proposes suggestions for the subsequent application of ultra-high strength steel on jacket platforms.