挪威北海环境下自升式钻井平台悬臂梁负荷试验方法研究

摘要

The cantilever is an important part of the jack-up drilling rig,capable of finishing drilling works by drill floor port/stbd and cantilever forward/aft moving.In this paper,a new type of safe and reliable load test scheme is designed and studied for POD-5 project.The platform in the north sea area of Norway drilling operation conditions are simulated by putting some steel blocks on the drill floor and suspending barge loaded with water on the top drive large hook.Through the analysis on the results of numerical simulation and test,it is checked whether the strength of the cantilever beam and the main structure of the platform can meet the design requirements.%悬臂梁是自升式钻井平台的重要组成部分,通过其艏艉滑动和钻台的左右滑移来完成钻井作业.本文以在挪威北海环境下作业的勘探5号平台为例,通过设计一种新型安全可靠的负荷试验方案,即通过在钻台摆放一定数量的压铁,在顶驱大钩悬挂驳船加压载水的形式来模拟平台在挪威北海海域钻井作业工况.并通过与数值模拟结果进行对分分析,试验数据表明先采用数值分析手段来模拟试验过程,然后运用试验数据修正理论计算结果,能得到比较贴近作业环境的应力和变形结果,并校核悬臂梁及平台主体结构的强度是否满足设计要求.