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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Autors principals:	Qiangui Zhang, Xiangyu Fan, Yongchang Liang, Minghui Li, Guangzhi Li, Tianshou Ma, Wen Nie
Format:	Artigo
Idioma:	Inglês
Publicat:	MDPI AG 2017-03-01
Col·lecció:	Energies
Matèries:	coal coalbed methane permeability underbalanced drilling unloading confining pressure
Accés en línia:	http://www.mdpi.com/1996-1073/10/3/292
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