Results 151 to 157 of about 213 (157)

Determination of functional relations for calculating the drilling speed with rotary percussive drilling (in German)

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980
openaire   +1 more source

ROTARY PERCUSSIVE DRILLING WITH SUBMERSIBLE DRILLING HAMMERS AND OTHER METHODS OF DRILLING WORK IN QUARRY OPERATIONS

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2017
openaire   +1 more source

Bit life and power requirements in rotary-percussive shothole drilling

Soviet Mining Science, 1967
openaire   +1 more source

Research on rock breaking mechanism of rotary-percussion drilling in marine hard rock strata and the influence of engineering and tool parameters on ROP

Geoenergy Science and Engineering
Yan Xi, Gonghui Liu
exaly  

Development and Field Use of a High-Frequency Gas-Operated Rotary-Percussion Drilling Tool

JPT, Journal of Petroleum Technology, 1960
exaly  

Numerical investigation of rock-breaking mechanisms and influencing factors of different PDC cutters during rotary percussion drilling

Geoenergy Science and Engineering
Yumei Li, Yan Xi, Jiajia Feng
exaly  

Study on Steel Ball Impactor for Rotary Percussion Drilling

2009
exaly