JIA Aoyin,QIAN Liqin,WANG Jie,et al.Prediction and evaluation of residual life of casing with corrosion defects[J].Journal of Mechanical Strength,DOI:10.16579/j.issn.1001.9669.XXXX.XX.001.
JIA Aoyin,QIAN Liqin,WANG Jie,et al.Prediction and evaluation of residual life of casing with corrosion defects[J].Journal of Mechanical Strength,DOI:10.16579/j.issn.1001.9669.XXXX.XX.001.DOI:
Prediction and evaluation of residual life of casing with corrosion defects
基于von Mises等效应力屈服准则,建立含腐蚀缺陷套管的三维有限元计算模型,分析腐蚀坑深度和角度对套管应力影响规律。运用离子群优化-高斯过程回归(Particle Swarm Optimization-Gaussian Process Regression, PSO-GPR)算法,建立套管腐蚀速率预测模型。
结果
2
结合两种模型完成了含腐蚀缺陷套管剩余寿命评价,对油田现场含腐蚀缺陷套管预防和治理具有理论指导意义。
Abstract
Objective
2
As oil field development progresses into the middle and later stages
casing damage becomes increasingly severe
particularly incidents such as leakage
reduction in diameter
bending
and fractures caused by corrosion defects
leading to unsafe operations. Therefore
there is an urgent need to conduct residual life and safety evaluations of old oil field casings.
Methods
2
Based on the von Mises equivalent stress yield criterion
a three-dimensional finite element calculation model of casings containing corrosion defects was established to analyze the influence law of corrosion pit depth and angle on casing stress distribution. The particle swarm optimization-gaussian process regression (PSO-GPR) algorithm was employed to construct a predictive model for casing corrosion rates.
Results
2
Integration of the two models
the evaluation of the residual life of casings with corrosion defects was completed
it has theoretical guidance significance for the prevention and management of corroded casings in oil field operations.
关键词
套管腐蚀缺陷有限元分析PSO-GPR腐蚀速率剩余寿命
Keywords
Casing corrosion defectFinite element analysisPSO-GPRCorrosion rateResidual life
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