If the section is a circular arc in the spatial slanting plane, the circular arc is the extremely reasonable bore hole path curve for slide drilling in minimumcurvaturemethod.
在此方法中，假设井段是空间斜平面上的圆弧，对于滑动钻进方式，圆弧是非常合理的井眼轨迹曲线。
2
In the light of characteristics that horizontal hole possesses a certain rate of curvature, the method of estimating minimum axial force at any point along a rod string is established.
针对水平井井眼具有一定曲率的特点，建立了抽油杆柱下部任意一点最小轴向力的计算方法。
3
Based on the minimumcurvature radius definition and mid value theorem, the pape gives the method of determining the limit load of pile foundation through extreme value analysis.