基于船体RAO和波浪耦合下的钻杆安装力学分析  

Mechanical Analysis of Drill Pipe Installation Based on Vessel RAO and Wave Coupling

作　　者：徐孝轩[1] 刘亚男[2] 罗晓兰[2] 王伟超 程友祥 钟自成 王懿[2] Xu Xiaoxuan;Liu Yanan;Luo Xiaolan;Wang Weichao;Cheng Youxiang;Zhong Zicheng;Wang Yi(Institute of Surface Engineering,Sinopec Petroleum Exploration and Production Research Institute;China University of Petroleum（Beijing)

机构地区：[1]中国石化石油勘探开发研究院地面工程研究所 [2]中国石油大学(北京)

出　　处：《石油机械》2018年第12期34-39,共6页China Petroleum Machinery

基　　金：国家科技重大专项"海工模式优选决策系统"(2016ZX05033-004-004)

摘　　要：为了研究船体纵荡、升沉及纵摇运动对钻杆力学性能及下放结构物横向偏移的影响,建立了简单的钻杆力学模型,基于API实例中的钻井船RAO,将波浪引起的船体运动简化为3个自由度的简谐运动,利用有限元软件分析了钻杆所受应力及下端偏移量受钻杆上端船体运动与波浪参数的影响。分析结果表明:船体的纵荡运动主要影响下放结构物的横向偏移量,纵摇运动主要影响钻杆所受最大应力,升沉运动对二者的影响甚微;钻杆所受最大应力及下端结构物横向偏移量随浪高的增加一致增大,在实际工程中应重点考虑恶劣天气下的波浪高度,避免不必要的损失和事故。所得结论可为借助钻杆安装水下结构物的工程应用提供参考。To study the effects of vessel surging, heave and pitch motion on the mechanical properties of the drill pipe and the lateral displacement of the descending structure, a simple drill pipe mechanical model is established. Based on the drilling ship RAO in the API example , the vessel motion is simplified to a simple harmonic motion with three degrees of freedom. The finite element software is used to analyze the effect of vessel motion and wave parameters on the drill pipe stress and the lower end displacement. The analysis results show that the vessel surging mainly affects the lateral displacement of the descending structure. The pitching motion mainly affects the maximum stress of the drill pipe. The heave motion has little influence. The maximum stress on the drill pipe and the lateral displacement of the lower structure increases with the increase of wave height. During operation, wave height under bad weather should be noted to avoid unnecessary losses and accidents. The study can be used as a reference for subsea structures installation by drill pipe.

关 键 词：船体运动 RAO 波浪参数 横向偏移 波浪耦合 钻杆 应力 

分 类 号：TE951[石油与天然气工程—石油机械设备]