Indexed by:期刊论文

Date of Publication:2010-09-08

Journal:Applied Mechanics and Materials

Included Journals:EI、CPCI-S、SCIE、Scopus

Volume:29-32

Page Number:1762-1767

ISSN No.:9780878492459

Key Words:methane hydrate; porous media; permeability reduction; absolute permeability; relative permeability; hydrate dissociation; simulation

Abstract:To make the recovery of methane from hydrates commercially viable, many uncertainties in hydrate dissociation process in porous media must be solved. In this study, the permeability variation with the pore-scale hydrate distributions was experimentally determined, and through the comparison of the experimental results with permeability correlations, the hydrate forming in the center of pore space was confirmed. To evaluate the effect of permeability reduction, absolute permeability and relative permeability on MH dissociation and gas production behavior, the Masuda permeability model was incorporated with a depressurization mathematical model, and some simulation runs was carried out. Based on the results of the numerical simulation, the effect of permeability variation on gas production from hydrate was analyzed.