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

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Application of Hydraulic Internal Cutter and Retrievable Spear for Drill Rod Fishing in Deep Hole
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Affiliation:No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development,The Institute of Exploration Techniques, CAGS,No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development,No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development
Clc Number:P635.4
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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.

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History

Received:August 27,2014
Revised:August 27,2014
Adopted:December 17,2014
Online: February 11,2015
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