The definition of casing bend force is not exact, and taking the bend force into account for casing design in the vertical interval is not correct.
套管弯曲力的定义不够严格，把弯曲力加到垂直井段是不正确的。
Well intervals where lift pumps can be located in highly deviated Wells include vertical interval, deflecting interval, Angle maintaining interval and branch rat hole.
大斜度井可供选择的下泵位置有在垂直段安装，在造斜段安装、在稳斜段安装、在分支鼠洞井眼安装。
Well intervals where lift pumps can be located in highly deviated Wells include vertical interval, deflecting interval, Angle maintaining interval and branch rat hole.
大斜度井可供选择的下泵位置有在垂直段安装，在造斜段安装、在稳斜段安装、在分支鼠洞井眼安装。
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