Results 131 to 140 of about 252 (179)

Embedded Drilling System Using Rotary-Percussion Drilling

2018
The drilling technology is widely used in various fields. This technology has been developed explosively by large companies. However, most of the conventional drilling systems require large equipment such as rig and mud systems. This makes it difficult for drilling in polar or space environments where large equipment is hard to enter or carry. To solve
Jongheon Kim, Jinkwang Kim, Hyun Myung
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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.
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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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Efficiency evaluation of a percussive drill rig using rate-energy ratio based on rock drilling tests

Journal of Petroleum Science and Engineering, 2022
Yaoru Liu, Yujie Wang
exaly  

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.
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Percussive Drilling: Experimental and Numerical Investigations

Rock Mechanics and Rock Engineering, 2022
Laurent Gerbaud, Ahmed Rouabhi
exaly  

Numerical study on impact energy transfer and rock damage mechanism in percussive drilling based on high temperature hard rocks

Geothermics, 2021
Huai Zhong, Hengyu Song
exaly  

percussion drilling

2014
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Numerical simulation of the energy transfer efficiency and rock damage in axial-torsional coupled percussive drilling

Journal of Petroleum Science and Engineering, 2021
Huai Zhong, Hengyu Song
exaly