套管柱 meaning in English

casing string
string of casing

Design method of casing string strength
套管柱强度设计方法
It can lead to not only quick wear and early failure of drill pipe but also the decrease of collapse resistance and burst resistance of casing string , which could cause casing collapse , casing deformation and casing leak , even well bore abandonment
其直接后果是：钻柱快速磨损，导致过早失效；套管磨损会降低套管柱的抗挤强度和抗内压强度，造成套管柱挤毁、变形及泄漏，严重时造成全井报废。
By using finite element method , full - scale tests and the strain survey method , as for the crescent - shaped wear casing , this paper has discussed on mechanism of casing collapse and its influence on casing collapse . furthermore , computing method for both uniform wear and crescent - shaped wear situation was introduced , which can be used directly for casing string design
采用有限元分析、实物试验及实验应变测量方法，研究了套管产生不均匀磨损时的挤毁失效机理及其对套管挤毁性能的影响，确定了均匀磨损和不均匀磨损对套管挤毁性能的计算方法，研究结果可直接用于套管柱强度设计和校核中。