Exploration and determination of the principles of rotary-percussive underground slimhole drilling

Abstract

A possibility of the efficient use of rotary percussive drilling to provide drilling smaller diameter holes (40-70 mm) both in mining and prospecting is disclosed herein. A new construction designed for the nipple thread connection is described. The relative amplitude variation, change of power pulse time and energy in their propagation throughout the drilling tool are determined. A possibility of the efficient power pulse transfer along the drill string to the rock destruction tools with new nipple connections which allow automating the make-up and breakout system of drill pipe was supported by experiments.

Original language	English
Pages (from-to)	245-249
Number of pages	5
Journal	International Journal of Mining Science and Technology
Volume	24
Issue number	2
DOIs	https://doi.org/10.1016/j.ijmst.2014.01.017
Publication status	Published - 1 Jan 2014

Keywords

Drill string
Nipple thread connection
Percussive energy
Power pulse
Rotary-percussive drilling
Smaller diameter holes

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Energy Engineering and Power Technology
Geochemistry and Petrology

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10.1016/j.ijmst.2014.01.017

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title = "Exploration and determination of the principles of rotary-percussive underground slimhole drilling",

abstract = "A possibility of the efficient use of rotary percussive drilling to provide drilling smaller diameter holes (40-70 mm) both in mining and prospecting is disclosed herein. A new construction designed for the nipple thread connection is described. The relative amplitude variation, change of power pulse time and energy in their propagation throughout the drilling tool are determined. A possibility of the efficient power pulse transfer along the drill string to the rock destruction tools with new nipple connections which allow automating the make-up and breakout system of drill pipe was supported by experiments.",

keywords = "Drill string, Nipple thread connection, Percussive energy, Power pulse, Rotary-percussive drilling, Smaller diameter holes",

author = "Anastasija Victorovna Shadrina and Lev Saruev",

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KW - Smaller diameter holes

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