Mechanical Behavior and Permeability Evolution of Reconstituted Coal Samples under Various Unloading Confining Pressures—Implications for Wellbore Stability Analysis

Mechanical Behavior and Permeability Evolution of Reconstituted Coal Samples under Various Unloading Confining Pressures—Implications for Wellbore Stability Analysis

Low pressure, low permeability, and low saturation of Chinese coal-bed methane (CBM) reservoirs make underbalanced drilling (UBD) widely used for mining CBM in China. In this study, mechanical behavior and permeability of coal rock were investigated under different degrees of unloading confining pre...

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Bibliographic Details
Main Authors: Qiangui Zhang, Xiangyu Fan, Yongchang Liang, Minghui Li, Guangzhi Li, Tianshou Ma, Wen Nie
Format: Article
Language:English
Published: MDPI AG 2017-03-01
Series:Energies
Subjects:
coal
coalbed methane
permeability
underbalanced drilling
unloading confining pressure
Online Access:http://www.mdpi.com/1996-1073/10/3/292

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http://www.mdpi.com/1996-1073/10/3/292

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