Stephan Matthai

Effective application of proppants during the hydraulic fracturing of coal seam gas reservoirs: Implications from laboratory testings of propped and unpropped coal fractures

MAA Ahamed, MSA Perera, D Elsworth, PG Ranjith, SKM Matthai, Dong-yin Li

Journal article  |  2021  |  FUEL

Commercial production of coal seam gas is a significant proportion of the total Worldwide natural gas supply due to its high gas s..

Impact of the vertical resolution of corner-point grids on CO2 plume migration predictions for layered aquifers

AbdAllah A Youssef, LK Tran, SK Matthai

Journal article  |  2021  |  INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL

Design of subsurface CO2 storage sites largely relies on numeric simulation-based predictions of plume extent and progressive immo..

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

MAA Ahamed, MSA Perera, Jay R Black, SK Matthai, PG Ranjith, Dong-yin Li, KHSM Sampath

Journal article  |  2021  |  JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING

Although mixing of proppants with the fracturing fluid can significantly improve the productivity of many unconventional gas reser..

Discrete fracture matrix modelling of fully-coupled CO2 flow - Deformation processes in fractured coal

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

Journal article  |  2021  |  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES

CO2 interaction causes complex mechanical deformations and flow modifications in coal, depending on the spatial disposition of the..

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

In this paper, we present the results of benchmark simulations for plume spreading during CO2 geo-sequestration conducted with the..

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  |  JOURNAL OF PHYSICAL CHEMISTRY C

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..