喇嘛甸油田含腐蚀缺陷套管剩余强度模拟预测模型研究  

Corrosion Defect Included Casing Residual Strength Simulation and Prediction of Lamadian Oilfield

作　　者：刘向斌 任相羿 蔡萌 李俊亮 张楠 王鹏[1] LIU Xiangbin;REN Xiangyi;CAI Meng;LI Junliang;ZHANG Nan;WANG Peng(Daqing Oil Field Production Technology Institute,Daqing,Heilongjiang 163453,China;State Key Laboratory of Oil and Gas Equipment,CNPC Tubular Goods Research Institute,Xi′an,Shaanxi 710077,China)

机构地区：[1]中国石油大庆油田有限责任公司采油工艺研究院,黑龙江大庆163453 [2]中国石油集团工程材料研究院有限公司,油气钻采输送装备全国重点实验室,陕西西安710077

出　　处：《石油管材与仪器》2024年第3期39-45,I0004,共8页Petroleum Tubular Goods & Instruments

基　　金：黑龙江省省级项目“古龙页岩油增产改造关键技术研究”(编号:2021ZZ10-04)。

摘　　要：喇嘛甸油田老井套管不特定点蚀现象频发,导致基于均匀腐蚀和圆形点蚀的安全评价方法准确度不足。为提高老井安全评价准确性,通过带有不同尺寸模拟腐蚀缺陷试样的特殊拉伸试验,结合有限元数值模拟仿真分析手段以及SY/T 5724给出的套管强度计算公式,建立了含腐蚀缺陷套管剩余强度预测模型。该模型可针对任意尺寸的腐蚀缺陷开展套管剩余强度预测计算,为后期老井剩余寿命评价构建数据基础,指导现场老井套管剩余强度预测。The unspecified pitting corrosion phenomenon of old well casing in Lamadian oilfield resulted in lack of accuracy of current safety evaluation method based on uniform corrosion and circular pit corrosion.To improving the safety evaluation accuracy of old well,this research establishes the residual strength prediction model of casing with corrosion defects through tensile test of specimens with simulated corrosion defects,finite element analysis and casing strength calculating formula from SY/T 5724.This model can realize the residual strength calculation of casing with corrosion defects of any shape and size,which provides the data for old well residual life evaluation and guides the residual strength prediction of old wells in oilfield.

关 键 词：套管 腐蚀缺陷 数值模拟 剩余强度 预测模型 

分 类 号：TE973[石油与天然气工程—石油机械设备]