Results 171 to 180 of about 194,053 (216)

Percussion Drilling…Is It a Lost Technique? A Review.

Permian Basin Oil and Gas Recovery Conference, 1996
Abstract This paper presents a review of the benefits and performance of downhole percussion hammers. The advancement of drilling technology and the extensive use of coiled tubing coupled with different downhole motors prompted another look at the percussion type of drills.
openaire   +1 more source

Laboratory Investigations on Percussive Drilling

Journal of The Institution of Engineers (India): Series D, 2013
The laboratory investigation was carried out on ten rock samples using pneumatic drill with drill bits of different diameters. In general, the process of drilling always produces sound. Sound is generated from the bit-rock interface regardless of the material of the bit used in drilling.
S. B. Kivade, Ch. S. N. Murthy, Harsha Vardhan   +2 more
openaire   +1 more source

Automatic Control in Percussion Drilling

IFAC Proceedings Volumes, 1976
Abstract A committee within the Swedish Mining Research has evaluated automation of percussion drilling and given a priority list for the different operations, based upon the influence of automation on costs, capacity and ergonomics. The paper gives a survey of the present situation regarding mechanization and automation of feed control, stop and ...
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Rotary Percussion and Auger Drilling

2010
In rotary percussion drilling, a variety of blade or roller bits (Fig. 5.2) mounted on the end of a rotating string of rods cut and break the rock. A percussion or hammer action in conjunction with a chisel bit can be used to penetrate hard material.
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A study of penetration by percussive drills.

1971
This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
openaire   +1 more source

Molecular dynamics-guided quality improvement in the femtosecond laser percussion drilling of microholes using a two-stage pulse energy process

Optics and Laser Technology, 2021
Wei Xu, Chenchong Wang, Zenan Yang
exaly  

percussion drilling

2014
openaire   +2 more sources

Percussion Drilling Hole in Cu, Al, Ti and Ni Alloys Using Ultra-Short Pulsed Laser Ablation

Materials, 2020
Xuesong Mei, Wanqin Zhao
exaly  

Internal characterization and hole formation mechanism in the laser percussion drilling process

International Journal of Machine Tools and Manufacture, 2013
Eneko Ukar, Franck Andrés Girot Mata, I Tabernero   +2 more
exaly  

Performance evaluation of polycrystalline diamond compact percussion bits through laboratory drilling tests

International Journal of Rock Mechanics and Minings Sciences, 2016
Kuniyuki Miyazaki
exaly