复杂载荷下油井管接头数值仿真平台的研发与应用

发布时间：2018-09-06 12:32

【摘要】：日益复杂的油气井钻采条件使得油井管柱面临越来越苛刻的载荷工况,油井管接头作为整个管柱的薄弱环节,其失效问题非常突出。实物实验费用昂贵、实验周期长,且复杂载荷工况难以施加,无法满足实际要求。该文基于油井管接头三维全尺寸弹塑性有限元分析,构建了复杂载荷下油井管接头数值仿真平台,是实物实验的一个有力补充。该仿真平台所得极限工作扭矩与API标准提供数据基本吻合(零轴向力条件下),同时具有分析复杂工况条件下油井管接头三维力学特性的能力。通过该仿真平台,能很好地描述复杂载荷作用下油井管接头的受力特征,快速、全面地评估复杂载荷作用下油井管接头的连接强度和密封性能,明确油井管接头的极限载荷工况。
[Abstract]:The increasingly complex drilling and production conditions of oil and gas wells make the tubing string face more and more harsh load conditions. As the weak link of the whole string, the failure problem of the tubing joint is very prominent. The experiment cost is expensive, the experiment period is long, and the complex load condition is difficult to be applied, so it can not meet the practical requirements. Based on the three dimensional elastoplastic finite element analysis of oil well pipe joint, a numerical simulation platform of oil well pipe joint under complex load is constructed, which is a powerful supplement to the physical experiment. The ultimate working torque obtained from the simulation platform is basically consistent with the data provided by the API standard (under the condition of zero axial force) and has the ability to analyze the three-dimensional mechanical properties of oil well pipe joints under complex working conditions. The simulation platform can describe the stress characteristics of oil well pipe joints under complex loads, and evaluate the connection strength and sealing performance of oil well tubing joints under complex loads quickly and comprehensively. Define the limit load condition of the tubing joint.
【作者单位】：上海大学上海市应用数学和力学研究所;上海大学机电工程与自动化学院;
【基金】：国家自然科学基金项目(U1663205,51174130) 上海市重点学科建设项目(S30106) 上海市优秀学术带头人项目(12XD1402500) 上海市部分地方院校能力建设项目(12160500200) 上海市力学在能源工程中的应用重点实验室开放基金项目(ORF-201602) 上海市教育委员会(高峰学科建设项目) 上海市青年科技英才扬帆计划项目(17YF1428000)
【分类号】：TE931.2

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