Injection‐induced shear slip and permeability enhancement in granite fractures

Z Ye, A Ghassemi - Journal of Geophysical Research: Solid …, 2018 - Wiley Online Library
Shear stimulation, so‐called hydroshearing, is believed to reactivate critical or near‐critical
preexisting fractures by pressurized fluid injection, causing them to slip and dilate for …

The influence of preslip sealing on the permeability evolution of fractures and faults

K Im, D Elsworth, Y Fang - Geophysical Research Letters, 2018 - Wiley Online Library
The evolution of permeability on fractures and faults during the full earthquake cycle is
shown to be sensitive to sealing during the repose phase. We explore the combined effect of …

[HTML][HTML] Permeability evolution of fluid-injection-reactivated granite fractures of contrasting roughnesses

F Zhang, G He, M An, R Huang, D Elsworth - Underground Space, 2025 - Elsevier
Fracture/fault instability induced by fluid injection in deep geothermal reservoirs could not
only vary the reservoir permeability but also trigger hazardous seismicity. To address this …

Seismicity-permeability coupling in the behavior of gas shales, CO2 storage and deep geothermal energy

Y Fang, C Wang, D Elsworth, T Ishibashi - Geomechanics and Geophysics …, 2017 - Springer
Contemporary methods of energy conversions that reduce carbon intensity include
sequestering CO 2, fuel switching to lower-carbon sources, such as from gas shales, and …

[PDF][PDF] Deformation, failure and permeability evolution of sealed fractures in EGS Collab Poorman schist

Z Ye, A Ghassemi, T Kneafsey - 45th Workshop on …, 2020 - pangea.stanford.edu
It is widely recognized that reactivation of pre-existing fractures by injection can play a
crucial role in permeability creation during EGS stimulation. A numbers of previous studies …

Co-evolution of fracture permeability and friction in rocks from the EGS Collab Experiment 1 site

EC Yildirim, K Im, D Elsworth - ARMA US Rock Mechanics …, 2018 - onepetro.org
Fracture permeability is a dynamic property under conditions of varying stress and responds
to fluid overpressures applied during hydraulic stimulation. We use samples from the SIGMA …

Friction-permeability relationships for reservoir caprocks

Y Fang, C Wang, D Elsworth, T Ishibashi - ARMA US Rock Mechanics …, 2016 - onepetro.org
There is wide concern that pressurized CO2 fluid has a potential to induce seismicity in the
impermeable caprocks that overlie CO2 injection formations. However, the possible impact …

Numerical investigation of the effect of frictionally weak minerals on shear strength of faults

C Wang, D Elsworth - ARMA US Rock Mechanics/Geomechanics …, 2016 - onepetro.org
Recent observations suggest that the presence of frictionally weak minerals in a majority
frictionally strong matrix may explain the reduced strength and instability in faults …

Deformation, failure and permeability evolution of sealed fractures/foliations in EGS collab poorman schist

Z Ye, A Ghassemi, T Kneafsey - ARMA US Rock Mechanics …, 2020 - onepetro.org
It is widely recognized that reactivation of pre-existing fractures by injection can play a
crucial role in permeability creation during EGS stimulation. A numbers of previous studies …

Induced Seismicity and Permeability Evolution in Gas Shales, CO2 Storage and Deep Geothermal Energy

D Elsworth, K Im, Y Fang, T Ishibashi… - … of GeoShanghai 2018 …, 2018 - Springer
Contemporary methods of energy conversions that reduce carbon intensity include
sequestering CO 2, fuel switching to lower-carbon sources, such as from gas shales, and …