水力内割刀与可退式捞矛在打捞深孔事故钻杆中的应用

Application of Hydraulic Internal Cutter and Retrievable Spear for Drill Rod Fishing in Deep Hole

摘要:

采用水力式割刀分段割断事故钻杆，可退式捞矛捞取事故钻杆的处理方法，快捷、安全、经济地处理了招远栾家河金矿区47ZK3孔深孔跑钻事故。结合该工程实例，介绍了水压式割刀和可退式捞矛的使用方法，并与传统的反丝钻杆和丝锥锥捞处理方法进行了比较。

Abstract:

The drill sliding accident was handled by drill rod section-cutting with hydraulic cutters and fishing with retrievable spear in 47ZK3 of Luanjiahe gold mine in Zhaoyuan of Shandong. With the engineering case, the paper introduces the usage of hydraulic-pressure cutters and retrievable fishing spear, and presents the comparison between this and conventional fishing by reverse-thread drill rod and screwing fishing.