应用数学和力学2023，Vol.44Issue(12)：1522-1534,13.DOI:10.21656/1000-0887.440172
高温高压模拟井筒应力分析与评价
Stress Analysis and Evaluation of the High-Temperature High-Pressure Wellbore Hole Simulator
摘要
Abstract
The wellbore hole simulator as a high-temperature high-pressure thick-walled container,is an exper-imental device used to simulate the high-temperature high-pressure downhole environment of oilfield.Based on thermodynamics and the large eddy simulation(LES)theory,a physical equation was established.The projec-tion method was applied to solve the temperature field governing equation,and the trapezoidal-rule numerical integration was used to solve the thermal stress governing equation.The discrete scheme for the governing e-quation was given.The fluid-structure-interaction heat transfer was solved with the virtual density method,and the thermal stress,the pressure stress and their coupling effect of the wellbore hole simulator were numerically analyzed under the principle of stress superimposition.The research results indicate that,the wellbore hole sim-ulator with a minimum wall thickness of 0.18 m could meet the strength requirements for high-temperature high-pressure experiments with 400℃and 220 MPa working parameters.The experiments prove the correctness of the established mathematical model and the numerical solution methods,providing a theoretical basis for the design of thick-walled cylinder containers under high-temperature high-pressure conditions.关键词
热应力/大涡模拟/投影法/应力耦合/强度分析Key words
thermal stress/large eddy simulation/projection method/stress coupling/strength analysis分类
机械制造引用本文复制引用
侯永强,纪斌,贾光政,高涵..高温高压模拟井筒应力分析与评价[J].应用数学和力学,2023,44(12):1522-1534,13.基金项目
2022年度黑龙江省博士后项目(LBH-Z22254) （LBH-Z22254）
黑龙江省自然科学基金项目(LH2023A002) （LH2023A002）
中国石油天然气股份有限公司重大科技专项(2017E-16-05) （2017E-16-05）
