SE0004670L - Method and system for rock drilling as well as tools and rock drilling for rock drilling - Google Patents

Method and system for rock drilling as well as tools and rock drilling for rock drilling

Info

Publication number
SE0004670L
SE0004670L SE0004670A SE0004670A SE0004670L SE 0004670 L SE0004670 L SE 0004670L SE 0004670 A SE0004670 A SE 0004670A SE 0004670 A SE0004670 A SE 0004670A SE 0004670 L SE0004670 L SE 0004670L
Authority
SE
Sweden
Prior art keywords
drill bit
pulse
percussion
drill
rock drilling
Prior art date
Application number
SE0004670A
Other languages
Swedish (sv)
Other versions
SE0004670D0 (en
SE524701C2 (en
Inventor
Markku Keskiniva
Jorma Maeki
Pasi Latva-Pukkila
Pekka Salminen
Original Assignee
Sandvik Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20282265&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE0004670(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sandvik Ab filed Critical Sandvik Ab
Priority to SE0004670A priority Critical patent/SE524701C2/en
Publication of SE0004670D0 publication Critical patent/SE0004670D0/en
Publication of SE0004670L publication Critical patent/SE0004670L/en
Publication of SE524701C2 publication Critical patent/SE524701C2/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

A percussion-type torque pulse is created in the drill tool (4) and transmitted to the drill bit (5). The effect of this pulse on the drill bit is coordinated so that this effect occurs after a pre-determined time delay following the length strike on the drill bit when at least one of the drill bit working parts is in the rock as a result of pressure pulses. This causes the drill bit to rotate in a percussion-type manner, so that rock is removed by shear forces. Independent claims are also included for (a) the rock drilling system used in this method, including a means for dividing the prim. pressure pulse in the drill tool into two components, a means for directing a percussion-type torque pulse to the drill bit, and a means for directing the percussion-type torque pulse to the drill bit after a pre-determined time delay following the pressure pulse, (b) the drill tool for this system, which has an anisotropic section (7) for dividing the prim. pressure pulse into two componets, namely a sec. pressure pulse and a torque pulse, this section being located a pre-determined distance (LGEN) from the drill bit face, and where the torque force reaches this face after the sec. percussion pulse with a delay which is proportional to this distance, and (c) the rock drill (1) for this system.
SE0004670A 2000-12-15 2000-12-15 Percussion type rock drilling method, uses percussion torque pulse created in drill tool to cause drill bit to shear against rock SE524701C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0004670A SE524701C2 (en) 2000-12-15 2000-12-15 Percussion type rock drilling method, uses percussion torque pulse created in drill tool to cause drill bit to shear against rock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0004670A SE524701C2 (en) 2000-12-15 2000-12-15 Percussion type rock drilling method, uses percussion torque pulse created in drill tool to cause drill bit to shear against rock

Publications (3)

Publication Number Publication Date
SE0004670D0 SE0004670D0 (en) 2000-12-15
SE0004670L true SE0004670L (en) 2002-06-16
SE524701C2 SE524701C2 (en) 2004-09-21

Family

ID=20282265

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0004670A SE524701C2 (en) 2000-12-15 2000-12-15 Percussion type rock drilling method, uses percussion torque pulse created in drill tool to cause drill bit to shear against rock

Country Status (1)

Country Link
SE (1) SE524701C2 (en)

Also Published As

Publication number Publication date
SE0004670D0 (en) 2000-12-15
SE524701C2 (en) 2004-09-21

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Legal Events

Date Code Title Description
NUG Patent has lapsed