套管内壁磨损对其抗挤毁性能影响的有限元分析  

Finite element analysis of casing collapse strength caused by inside worn

作　　者：高连新[1] 杨勇[1] 张风锐[2] 

机构地区：[1]中国石油天然气集团公司石油管材研究所,陕西西安710065 [2]吉林石油集团公司钻采工艺研究院,吉林松原138000

出　　处：《石油矿场机械》2000年第3期39-41,共3页Oil Field Equipment

摘　　要：运用有限元法 ,建立起计算模型 ,对内壁磨损套管的抗挤毁强度进行了定量计算 ,并与全尺寸实物试验结果进行了对比。指出套管的抗挤毁强度与内壁磨损程度基本成线性关系。同时指出 ,在计算套管的抗挤毁强度时 ,用均匀磨损模型代替非均匀磨损模型 ,计算结果有较大误差。Study on the decrease of the collapse strength caused by casing inside worn was done with finite element analysis(FEA).The calculation result was compared with that of a full scale physical test.It is found that the two results were quite close,and the collapse strength was linear to the amount of wear.It is also found that the collapse strength of the even wear model was different from that of the uneven wear one.A quite great error would happen if a wrong model has been used.

关 键 词：有限元法 石油套管 内壁磨损 抗挤毁性能 

分 类 号：TE931.207[石油与天然气工程—石油机械设备]