Publications by Jinwoo Kim | EPFL Graph Search

Impact of Water Saturation on the Anisotropic Elastic Moduli of a Gas Shale

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

How water saturation affects elastic properties is particularly important for analyses of gas shales in unconventional reservoirs, but experimental data in defined partially saturated conditions are rare. We show that the elastic moduli of a gas shale vary ...

SPRINGER WIEN2025

Water retention behavior of a gas shale: Wettability-controlled water saturation and anisotropic hydromechanical response

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

Gas shales are fine-grained, organic-rich sedimentary geomaterials with ultra-low permeability requiring hydraulic stimulation for gas extraction. Characterizing their water retention behavior is critical for predicting hydromechanical behavior and fluid f ...

2025

Salinity-dependent ultimate shear strength of compacted Wyoming-type bentonite investigated by triaxial tests

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

Ion composition in groundwater at the spent nuclear fuel repositories is a relevant uncertainty for predicting the shear behavior of the bentonite buffer. However, only a few studies investigated the range of shear strength variation with in-situ groundwat ...

Elsevier BV2024

Swelling and shrinkage of gas shales due to suction variations

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

2022

Swelling and shrinkage of partially saturated gas shales: from laboratory tests to an effective stress framework

Jinwoo Kim

Gas shale swelling during hydraulic stimulation is one of the major challenges in unconventional gas development. It is hypothesized that the large volumetric strain upon water imbibition is a consequence of dramatic changes in capillary pressure and disjo ...

EPFL2022

Seismic vulnerability assessment of free-standing massive masonry columns by the 3D Discrete Element Method

Jinwoo Kim

Free-standing masonry column is a recurrent typology of built cultural heritage. Usually raised without seismic design, columns are subject to intense rocking and overturning under strong ground motions. In this paper, a strategy to assess their seismic vu ...

ELSEVIER SCI LTD2021

Developing a high capacity axis translation apparatus for gas shale testing

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

Gas shales are usually partially saturated due to hydrocarbon generation and often have a low in-situ degree of saturation less than 40 %. During stimulation, substantial fluid imbibition into the formation occurs due to high suction. Recent research on th ...

EDP Sciences2020