The float shoe also guides the casing toward the center of the hole to minimize hitting rock ledges or washouts as the casing is run into the wellbore.
当下套管时，浮鞋同样能够引导套管到井眼中心，减少套管对岩石突起或者井眼冲刷段的撞击。
3
A slang term for an internal drift diameter gauge typically used to check casing or tubing joints before they are picked up and run into the wellbore.