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

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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
  • Published:
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