Large-scale physical modelling of carbon dioxide injection and gas flow in coal matrix

摘要

In this paper, CO2 injection and subsequent gas flow in a coal matrix are modelled by a large-scale physical experiment. CO2 transport in porous media after gas injection is investigated in terms of three aspects: (1) the spatio-temporal volumetric strain of the coal matrix caused by CO2 injection; (2) gas pressure changes or redistribution in the coal matrix resulting from the gas flow; and (3) thermal analysis of the coal matrix during the injection process. (C) 2016 Elsevier B.V. All rights reserved.