Details
| Original language | English |
|---|---|
| Article number | 022034 |
| Journal | IOP Conference Series: Earth and Environmental Science |
| Volume | 570 |
| Issue number | 2 |
| Publication status | Published - 11 Nov 2020 |
| Event | China Rock 2020 - Beijing, China Duration: 23 Oct 2020 → 26 Oct 2020 |
Abstract
Due to differences in mineral compositions, sedimentary conditions, stress history, and geological processes, the spatial variability of the mechanical properties of rock masses is usually considerable. Therefore, the influence of the spatial variability of rock mass parameters on the irregular propagation of hydraulic fractures should be studied. In this work, an efficient approach is proposed for studying the irregular propagation of hydraulic fractures considering the spatial variability of rock mass parameters; this approach is based on the phase field method and random field theory. Combined with random field theory, the phase field method is adopted to simulate the fracture propagation in a spatially variable rock mass. Random fields of the Young's modulus are generated using the Cholesky decomposition method and then embedded into the phase field model. The influences of different scales of fluctuation of the rock mass parameters' random fields on the fracture shape under fluid-driven conditions are investigated in this study. The results indicate that the spatial variability of the Young's modulus has a significant influence on the propagation of hydraulic fractures.
ASJC Scopus subject areas
- Environmental Science(all)
- General Environmental Science
- Earth and Planetary Sciences(all)
- General Earth and Planetary Sciences
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In: IOP Conference Series: Earth and Environmental Science, Vol. 570, No. 2, 022034, 11.11.2020.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Phase field modeling of hydraulic fracture propagation in spatially variable rock masses
AU - Chen, F. Y.
AU - Zhou, S. W.
AU - Zhuang, X. Y.
AU - Zhang, W. G.
N1 - Funding Information: This work was supported by the Natural Science Foundation of Chongqing, China (cstc2018jcyjAX0632), the program of China Scholarships Council (No. 201906050026), as well as the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJZD-K201900102).
PY - 2020/11/11
Y1 - 2020/11/11
N2 - Due to differences in mineral compositions, sedimentary conditions, stress history, and geological processes, the spatial variability of the mechanical properties of rock masses is usually considerable. Therefore, the influence of the spatial variability of rock mass parameters on the irregular propagation of hydraulic fractures should be studied. In this work, an efficient approach is proposed for studying the irregular propagation of hydraulic fractures considering the spatial variability of rock mass parameters; this approach is based on the phase field method and random field theory. Combined with random field theory, the phase field method is adopted to simulate the fracture propagation in a spatially variable rock mass. Random fields of the Young's modulus are generated using the Cholesky decomposition method and then embedded into the phase field model. The influences of different scales of fluctuation of the rock mass parameters' random fields on the fracture shape under fluid-driven conditions are investigated in this study. The results indicate that the spatial variability of the Young's modulus has a significant influence on the propagation of hydraulic fractures.
AB - Due to differences in mineral compositions, sedimentary conditions, stress history, and geological processes, the spatial variability of the mechanical properties of rock masses is usually considerable. Therefore, the influence of the spatial variability of rock mass parameters on the irregular propagation of hydraulic fractures should be studied. In this work, an efficient approach is proposed for studying the irregular propagation of hydraulic fractures considering the spatial variability of rock mass parameters; this approach is based on the phase field method and random field theory. Combined with random field theory, the phase field method is adopted to simulate the fracture propagation in a spatially variable rock mass. Random fields of the Young's modulus are generated using the Cholesky decomposition method and then embedded into the phase field model. The influences of different scales of fluctuation of the rock mass parameters' random fields on the fracture shape under fluid-driven conditions are investigated in this study. The results indicate that the spatial variability of the Young's modulus has a significant influence on the propagation of hydraulic fractures.
UR - http://www.scopus.com/inward/record.url?scp=85097336008&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/570/2/022034
DO - 10.1088/1755-1315/570/2/022034
M3 - Conference article
AN - SCOPUS:85097336008
VL - 570
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - 2
M1 - 022034
T2 - China Rock 2020
Y2 - 23 October 2020 through 26 October 2020
ER -