TY - GEN
T1 - Numerical simulation of hydraulic fracturing process in mixed ground
AU - Wang, J.
AU - Deng, Y.
AU - Liu, X.
AU - Peng, H.
AU - Yin, Y.
AU - Wu, L.
AU - Wu, Z.
N1 - Publisher Copyright:
© 2017 International Society for Rock Mechanics. All Rights Reserved.
PY - 2017
Y1 - 2017
N2 - The crack initiation and propagation process of hydraulic fracturing were reproduced using a coupled particle flow code (PFC) computational fluid dynamics (CFD) method in mixed ground. The breakdown pressure of mixed ground was investigated based on orthogonal test principles and five influencing factors were analysed. The crack propagation process in mixed ground was investigated under different normal bond strength ratios between hard and soft grounds and stress ratio. The minimum principal stress has the most influence on breakdown pressure, followed by stress ratio. Stress ratio was the determining factor for crack initiation direction. The result can be used in the engineering design of hydraulic fracturing projects.
AB - The crack initiation and propagation process of hydraulic fracturing were reproduced using a coupled particle flow code (PFC) computational fluid dynamics (CFD) method in mixed ground. The breakdown pressure of mixed ground was investigated based on orthogonal test principles and five influencing factors were analysed. The crack propagation process in mixed ground was investigated under different normal bond strength ratios between hard and soft grounds and stress ratio. The minimum principal stress has the most influence on breakdown pressure, followed by stress ratio. Stress ratio was the determining factor for crack initiation direction. The result can be used in the engineering design of hydraulic fracturing projects.
UR - http://www.scopus.com/inward/record.url?scp=85048570550&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85048570550
T3 - ISRM AfriRock - Rock Mechanics for Africa
SP - 837
EP - 846
BT - ISRM AfriRock - Rock Mechanics for Africa
PB - International Society for Rock Mechanics
T2 - ISRM AfriRock 2017 - Rock Mechanics for Africa
Y2 - 3 October 2017 through 5 October 2017
ER -