Comparative study on hydraulic fracturing using different discrete fracture network modeling: insight from homogeneous to heterogeneity reservoirs

M Wu, C Jiang, R Song, J Liu, M Li, B Liu, D Shi… - Engineering Fracture …, 2023 - Elsevier
Conventional discrete fracture network (DFN) modeling is used to simulate hydraulic fracture
propagation in fractured low permeability reservoirs. However, natural fractures have a …

[HTML][HTML] Modelling fluid injection-induced fracture activation, damage growth, seismicity occurrence and connectivity change in naturally fractured rocks

Q Lei, NG Doonechaly, CF Tsang - … Journal of Rock Mechanics and Mining …, 2021 - Elsevier
We develop a fully-coupled hydro-mechanical model to simulate fluid injection-induced
activation of pre-existing fractures, propagation of new damages, development of seismic …

Numerical back analysis method of three-dimensional in situ stress fields considering complex surface topography and variable collinearity

H Xu, S Li, D Xu, X Huang, M Zheng, J He… - International Journal of …, 2023 - Elsevier
Numerical back analysis based on incomplete in situ stress measurements is widely used to
estimate the three-dimensional (3D) in situ stress fields of large deep underground caverns …

[HTML][HTML] Influence of rock heterogeneity on hydraulic fracturing: A parametric study using the combined finite-discrete element method

M Wu, K Gao, J Liu, Z Song, X Huang - International Journal of Solids and …, 2022 - Elsevier
Hydraulic fracturing has proven to be an efficient technique to enhance production in
unconventional reservoirs. Since heterogeneity is commonplace in reservoir rocks, it is vital …

Implementation of extrinsic cohesive zone model (ECZM) in 2D finite-discrete element method (FDEM) using node binding scheme

W Cai, K Gao, S Ai, M Wang, YT Feng - Computers and Geotechnics, 2023 - Elsevier
The combined finite-discrete element method (FDEM) has been widely used for rock
fracturing simulations. Conventionally, FDEM is realized using the intrinsic cohesive zone …

Joint influence of in-situ stress and fracture network geometry on heat transfer in fractured geothermal reservoirs

Z Sun, C Jiang, X Wang, Q Lei, H Jourde - International Journal of Heat and …, 2020 - Elsevier
We quantitatively investigate the superimposed influence of geometrical properties and
geomechanical deformations of two-dimensional fracture networks on heat transfer in …

Scale‐bridging in three‐dimensional fracture networks: Characterizing the effects of variable fracture apertures on network‐scale flow channelization

JD Hyman, MR Sweeney, LP Frash… - Geophysical …, 2021 - Wiley Online Library
We incorporate observations of real fracture aperture variability observed in laboratory
experiments into an ensemble of three‐dimensional discrete fracture network (DFN) …

Effect of discrete fractures with or without roughness on seepage characteristics of fractured rocks

D Shi, L Li, J Liu, M Wu, Y Pan, J Tang - Physics of Fluids, 2022 - pubs.aip.org
This study proposes a new fractal permeability model for fractured rocks that
comprehensively accounts for the geometric fracture characteristics and the fluid transport …

A numerical study of stress variability in heterogeneous fractured rocks

Q Lei, K Gao - International Journal of Rock Mechanics and Mining …, 2019 - Elsevier
We conduct numerical simulations to investigate the variability of local stresses in
heterogeneous fractured rocks subjected to different far-field stress conditions. A realistic …

Stress‐induced anomalous transport in natural fracture networks

PK Kang, Q Lei, M Dentz… - Water Resources Research, 2019 - Wiley Online Library
We investigate the effects of geological stress on fluid flow and tracer transport in natural
fracture networks. We show the emergence of non‐Fickian (anomalous) transport from the …