Successful handling of this accident was achieved by repairing the top with milling method fishing with reversed male taper tap rotary jar and open downward impact tools .

利用裙边磨鞋修复鱼顶、公 锥倒 扣打捞、开式下击器活动 解 卡等措施，顺利地处理了井下事故。

The taper tap can effect different fishing operations when equipped with RH thread or LH thread drill pipes and other tools .

公 锥与正、反扣钻杆及其他工具配合使用，可实现不同的打捞 工艺。

The taper mill tap is a special tool for opening up a passage in casing .

锥形铣 锥是用来套管打通道的专用工具。

Combined taper pipe tap and core drill

扩孔钻和 锥管 丝锥复合 刀具

Special taper thread tap for gas cylinder

气瓶专用 锥形螺纹 丝锥