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Vol 148 Iss. 2
Pages:
167-169
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RUS
Article

Issues of fracture research in drilling explosive boreholes

Authors:
R. I. Sukhov1
Yu. M. Lebedkin2
A. V. Tymchur3
About authors
  • 1 — Mining Institute UrD RAS
  • 2 — Mining Institute UrD RAS
  • 3 — Mining Institute UrD RAS
Date submitted:
2000-07-09
Date accepted:
2000-08-28
Date published:
2001-02-01

Abstract

According to the principles of rock destruction, mechanical drilling of wells can be carried out in several ways, differing in their physical nature. For medium- and high-strength rock, roller cone bits with milled cutting structure or reinforced with high-strength tungsten carbide pins are used. The roller cone method of drilling implements the principle of bottom-hole destruction due to static impingement of the cutting structure, the rock is destroyed mainly by a piercing, partially blocked chipping. From the energy point of view, such impact on the bottom hole is not optimal.

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