RESEARCH PAPERS: Rock Mechanics/Drilling Mechanics

Vibrations Increase Available Power at the Bit

[+] Author and Article Information
D. W. Dareing

Norton Christensen Drilling Products, Houston, Tex. 77073

J. Energy Resour. Technol 107(1), 138-141 (Mar 01, 1985) (4 pages) doi:10.1115/1.3231153 History: Received August 12, 1983; Revised March 13, 1984; Online October 22, 2009


Drillstring vibrations are generally considered to be detrimental to downhole drilling equipment because they produce cyclic or fatigue loading. Tool joint failures, tubular washouts, and bit breakage are often fatigue related. On the positive side, dynamic forces applied to roller cone rock bits have the potential to increase penetration rate. This paper quantifies the available vibration energy at the bit and shows how to control the level of energy through bottom hole assembly design and rotary speed.

Copyright © 1985 by ASME
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