Experimental Study on the Stress Sensitivity and Influence Factors of Shale under Varying Stress
Joint Authors
Wu, Zhonghu
Wang, ShanYong
Sunwen, Jibin
Liu, Leilei
Zuo, Yu-Jun
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-11
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Shale reservoirs are characterized by extremely low permeability and high clay content.
To further study the stress sensitivity of a shale reservoir, the Lower Cambrian shale in north Guizhou was utilized.
Through laboratory testing, the relationships between the shale porosity and permeability and the effective stress were established, and the stress sensitivity of shale was analysed.
The mechanical properties and mineral composition of this shale were studied by rock mechanics testing and X-ray diffraction.
The main factors affecting the stress sensitivity were analysed.
The results show that the porosity and permeability of this shale decrease with increasing effective stress; the shale reservoir permeability damage rate is 61.44 ~ 73.93%, with an average of 69.92%; the permeability stress sensitivity coefficient is 0.04867 ~ 0.05485 MPa−1, with an average of 0.05312 MPa−1; and the shale reservoir stress sensitivity is strong.
Shale stress sensitivity is related to the rock mineral composition and rock mechanical properties.
The higher the clay content in the mineral composition, the lower the elastic modulus of shale, the higher the compressibility, and the greater the stress sensitivity coefficient.
American Psychological Association (APA)
Wu, Zhonghu& Zuo, Yu-Jun& Wang, ShanYong& Sunwen, Jibin& Liu, Leilei. 2018. Experimental Study on the Stress Sensitivity and Influence Factors of Shale under Varying Stress. Shock and Vibration،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1215193
Modern Language Association (MLA)
Wu, Zhonghu…[et al.]. Experimental Study on the Stress Sensitivity and Influence Factors of Shale under Varying Stress. Shock and Vibration No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1215193
American Medical Association (AMA)
Wu, Zhonghu& Zuo, Yu-Jun& Wang, ShanYong& Sunwen, Jibin& Liu, Leilei. Experimental Study on the Stress Sensitivity and Influence Factors of Shale under Varying Stress. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1215193
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215193