Alkali Solution Erodes Shale: Influencing Factors and Structural Damage Characteristics
Joint Authors
She, Jiping
Zhang, Hao
Zhong, Ying
Yuan, Yang
You, Jiachun
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-08-16
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
High-pH drilling fluids are often used for drilling shale gas wells.
Alkali erosion of shale is one of the important factors of wellbore instability.
Alkali erosion experiments of different kinds of minerals and shale were conducted in this paper.
Experimental results show that the corrosion rate of kaolinite is the highest when the pH is 9, the corrosion rate of smectite is the highest when the pH is 10 or 11, and the corrosion rate of the quartz is the highest when the pH is 12.
Both shale particle size and concentration of hydroxide ion all affect the reaction rate, and the former has a negative correlation with the reaction rate, and the latter has a positive correlation with the reaction rate.
In addition, alkaline erosion can lead to the fracture propagation along the bedding planes of shale, which can easily result in wellbore instability.
This study may offer some theoretical basis for wellbore instability induced by high-pH drilling fluids.
American Psychological Association (APA)
She, Jiping& Zhang, Hao& Zhong, Ying& Yuan, Yang& You, Jiachun. 2018. Alkali Solution Erodes Shale: Influencing Factors and Structural Damage Characteristics. Journal of Chemistry،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1182285
Modern Language Association (MLA)
She, Jiping…[et al.]. Alkali Solution Erodes Shale: Influencing Factors and Structural Damage Characteristics. Journal of Chemistry No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1182285
American Medical Association (AMA)
She, Jiping& Zhang, Hao& Zhong, Ying& Yuan, Yang& You, Jiachun. Alkali Solution Erodes Shale: Influencing Factors and Structural Damage Characteristics. Journal of Chemistry. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1182285
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1182285