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Indexed by:期刊论文

Date of Publication:2010-05-01

Journal:JOURNAL OF NATURAL GAS CHEMISTRY

Included Journals:SCIE、EI、ISTIC、CSCD

Volume:19

Issue:3

Page Number:255-260

ISSN No.:1003-9953

Key Words:pore network model; hydrate saturation; permeability; porous media

Abstract:The permeability in the methane hydrate reservoir is one of the key parameters in estimating the gas production performance and the flow behavior of gas and water during dissociation. In this paper, a three-dimensional cubic pore-network model based on invasion percolation is developed to study the effect of hydrate particle formation and growth habit on the permeability. The variation of permeability in porous media with different hydrate saturation is studied by solving the network problem. The simulation results are well consistent with the experimental data. The proposed model predicts that the permeability will reduce exponentially with the increase of hydrate saturation, which is crucial in developing a deeper understanding of the mechanism of hydrate formation and dissociation in porous media.