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