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Large-scale physical modelling of carbon dioxide injection and gas flow in coal matrix
- Yang, Hongwei, Xu, Jiang, Peng, Shoujian, Nie, Wen, Geng, Jiabo, Zhang, Chaolin
- Powder technology 2016 v.294 pp. 449-453
- carbon dioxide, coal, porous media, powders, thermal analysis
- 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.