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Industrial, Mechanical and Manufacturing Science
book

Industrial, Mechanical and Manufacturing Science

by Dawei Zheng
February 2015
Intermediate to advanced content levelIntermediate to advanced
316 pages
14h 54m
English
CRC Press
Content preview from Industrial, Mechanical and Manufacturing Science
Industrial, Mechanical and Manufacturing Science Zheng (Ed.)
© 2015 Taylor & Francis Group, London, ISBN: 978-1-138-02656-8
Research on the erosion of valve of positive pulse measurement
while drilling and structural improvement
Changqing Zhao, Kai Liu & Xing Chai
Faculty of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an, Shaanxi, China
ABSTRACT: Valve assembly of rotary valve type Positive Pulse Mmeasurement While Drilling (PPMWD)
is often used to generate pressure wave signal in logging while drilling. The sudden change of fluid direction
and pressure at the valve assembly always causes erosion-corrosion, resulting in punching and breaking. To
improve anti-erosion capacity and reduce the failure probability ...
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Publisher Resources

ISBN: 9781138026568