The shoe has padding around the collar, heel and tongue for added comfort. 鞋子的鞋帮、鞋跟和鞋舌部位都有衬垫,以增加舒适度。
It lands in a lower section of casing consisting of a casing shoe, torque lock profile and axial no-go and lock profile located in a specially machined collar section ( Fig.2). 它处在套管的较低部位,位于经特殊加工的接箍内、由套管鞋、扭矩锁紧装置、心轴止偏和锁紧部分组成(图2)。