中国石油大学学报（自然科学版）2018，Vol.42Issue(2)：71-78,8.DOI:10.3969/j.issn.1673-5005.2018.02.008
深水钻井送入管柱的载荷计算与强度分析
Loads calculation and strength analysis of landing string during deepwater drilling
摘要
Abstract
In conductor and casing running operations during deepwater drilling,the exposed landing string in seawater can object very complicated loads with a risk of failure. A quasi-static mechanical model of the landing string in deepwater drill-ing without risers was established based on the Euler-Bernoulli theory. It was solved by a weighted residual method to analyze the effects of marine environmental loads,drilling vessel offset movement and the weight of casing strings on the deformation and strength safety of the landing string. The research results demonstrate that ocean currents and waves have a great effect on the lateral deformation and top bending moment of the landing string. The weight of the casing strings is a key factor on the strength design of the landing string. In different operations,the drilling vessel offset towards the negative direction of the ocean current is beneficial to the vertical jetting operation of the conductor,and the vessel offset towards the positive direction of the ocean current can decrease the top bending moment of the landing string efficiently. The Mises stresses at the top and bottom of the landing string can increase suddenly due to the effect of bending normal stress. A strength design method of the landing string based on the axial composite stress is proposed.关键词
深水钻井/送入管柱/准静态分析/载荷计算/强度分析Key words
deepwater drilling/landing string/quasi-static analysis/loads calculation/strength analysis分类
能源科技引用本文复制引用
管志川,李敬皎,韩超,张波,赵效锋,腾学清,孙宝江..深水钻井送入管柱的载荷计算与强度分析[J].中国石油大学学报（自然科学版）,2018,42(2):71-78,8.基金项目
国家自然科学基金项目(51574275) （51574275）
教育创新团队发展计划项目(IRT 14R58) （IRT 14R58）
