Stephan Matthai

Investigating the proppant damage mechanisms expected in a propped coal fracture and its effect on fracture flow

MAA Ahamed, MSA Perera, JR Black, SK Matthai, PG Ranjith, L Dong-yin, KHSM Sampath

Journal article  |  2021  |  Journal of Petroleum Science and Engineering

Predicting plume spreading during CO2 geo-sequestration: benchmarking a new hybrid finite element-finite volume compositional simulator with asynchronous time marching

Qi Shao, Stephan Matthai, Thomas Driesner, Lutz Gross

Journal article  |  2020  |  Computational Geosciences

Toward the Understanding of Stress-Induced Mineral Dissolution via Molecular Scale Simulations

Yubing Ouyang, Shujian Chen, Weiqiang Chen, Lihai Zhang, Stephan Matthai, Wenhui Duan

Journal article  |  2020  |  The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter

Stress-induced mineral dissolution at contacts is a critical geophysical process in a broad spectrum of phenomena such as earthqua..

Simulation of two-phase flow in porous media with sharp material discontinuities

LK Tran, JC Kim, SK Matthäi

Journal article  |  2020  |  Advances in Water Resources

Geologic boundaries juxtaposing fine- against coarse-grained rock, have a profound impact on multiphase flow, giving rise to a spe..

Effect of supercritical-CO2 interaction time on the alterations in coal pore structure.

KHSM Sampath, I Sin, MSA Perera, SK Matthai, PG Ranjith, Li Dong-yin

Journal article  |  2020  |  Journal of Natural Gas Science and Engineering

The supercritical CO2 (S-CO2) interaction time is a vital parameter in CO2 geo-sequestration in coal seams, which is under-evaluat..

Modelling of fully-coupled CO2 diffusion and adsorption-induced coal matrix swelling

KHSM Sampath, MSA Perera, SK Matthai, PG Ranjith, Li Dong-yin

Journal article  |  2020  |  Fuel

Multiple CO2 diffusion mechanisms coexist in the coal matrix in certain pore pressure ranges and the subsequent CO2 adsorption ind..

Tensor Analysis of the Relative Permeability in Naturally Fractured Reservoirs

MH Sedaghat, S Azizmohammadi, SK Matthäi

Journal article  |  2020  |  SPE Journal

Fluid evidence shows that prediction of water breakthrough and oil recovery from fractured reservoirs cannot be performed accurate..

Does the symmetry of absolute permeability influence relative permeability tensors in naturally fractured rocks?

M Sedaghat, S Azizmohammadi, SK Matthäi

Journal article  |  2020  |  Journal of Petroleum Exploration and Production Technology

Relative permeability is a tensorial property directly dependent on absolute permeability tensor which has been taking both symmet..

Transitions between nanomechanical and continuum mechanical contacts: new insights from liquid structure.

Shu Jian Chen, Wei Qiang Chen, Yubing Ouyang, Stephan Matthai, Lihai Zhang

Journal article  |  2019  |  Nanoscale

The use of continuum mechanics to describe contacts involving nanoscale and atomic interactions has been one of the key controvers..

Evaluation of the mechanical behaviour of brine CO2 saturated brown coal under mono-cyclic uni-axial compression

KHSM Sampath, MSA Perera, DY Li, PG Ranjith, SK Matthai

Journal article  |  2019  |  Engineering Geology

CO2-sequestration and ECBM techniques necessitate injection of CO2 into coal reservoirs that are saturated under various pore flui..