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Title: Method and apparatus for water jet drilling of rock

Abstract

Rock drilling method and apparatus utilizing high pressure water jets for drilling holes of relatively small diameter at speeds significantly greater than that attainable with existing drilling tools. Greatly increased drilling rates are attained due to jet nozzle geometry and speed of rotation. The jet nozzle design has two orifices, one pointing axially ahead in the direction of travel and the second inclined at an angle of approximately 30.degree. from the axis. The two orifices have diameters in the ratio of approximately 1:2. Liquid jet velocities in excess of 1,000 ft/sec are used, and the nozzle is rotated at speeds up to 1,000 rpm and higher.

Inventors:
 [1];  [2];  [3];  [1]
  1. Rolla, MO
  2. Wroclaw, PL
  3. Corvallis, OR
Issue Date:
OSTI Identifier:
863206
Patent Number(s):
4119160
Assignee:
Curators of University of Missouri (Columbia, MO)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
E(11-1)-2677
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; water; jet; drilling; rock; utilizing; pressure; jets; holes; relatively; diameter; speeds; significantly; attainable; existing; tools; greatly; increased; rates; attained; due; nozzle; geometry; speed; rotation; design; orifices; axially; ahead; direction; travel; inclined; angle; approximately; 30; degree; axis; diameters; ratio; liquid; velocities; excess; 000; rotated; rpm; pressure water; apparatus utilizing; water jet; greatly increased; jet nozzle; rock drilling; drilling holes; greatly increase; rock drill; drilling rates; /175/239/

Citation Formats

Summers, David A, Mazurkiewicz, Marian, Bushnell, Dwight J, and Blaine, James. Method and apparatus for water jet drilling of rock. United States: N. p., 1978. Web.
Summers, David A, Mazurkiewicz, Marian, Bushnell, Dwight J, & Blaine, James. Method and apparatus for water jet drilling of rock. United States.
Summers, David A, Mazurkiewicz, Marian, Bushnell, Dwight J, and Blaine, James. Sun . "Method and apparatus for water jet drilling of rock". United States. https://www.osti.gov/servlets/purl/863206.
@article{osti_863206,
title = {Method and apparatus for water jet drilling of rock},
author = {Summers, David A and Mazurkiewicz, Marian and Bushnell, Dwight J and Blaine, James},
abstractNote = {Rock drilling method and apparatus utilizing high pressure water jets for drilling holes of relatively small diameter at speeds significantly greater than that attainable with existing drilling tools. Greatly increased drilling rates are attained due to jet nozzle geometry and speed of rotation. The jet nozzle design has two orifices, one pointing axially ahead in the direction of travel and the second inclined at an angle of approximately 30.degree. from the axis. The two orifices have diameters in the ratio of approximately 1:2. Liquid jet velocities in excess of 1,000 ft/sec are used, and the nozzle is rotated at speeds up to 1,000 rpm and higher.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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