Insight into Heterogeneity Effects in Methane Hydrate Dissociation via Pore-Scale Modeling

The production of natural gas from the gas hydrates has attracted significant attention over the last few decades. A continued challenge in gas hydrates is the estimation of the stored gas capacity. To alleviate this problem, this study uses the numerical modeling to provide insight into the distrib...

Full description

Saved in:
Bibliographic Details
Published inTransport in porous media Vol. 124; no. 1; pp. 183 - 201
Main Authors Abdoli, S. M., Shafiei, S., Raoof, A., Ebadi, A., Jafarzadeh, Y.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.08.2018
Springer Nature B.V
Subjects
Civil Engineering
Classical and Continuum Physics
Clustering
Dependence
Earth and Environmental Science
Earth Sciences
Gas hydrates
Gas recovery
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrology/Water Resources
Industrial Chemistry/Chemical Engineering
Mathematical models
Methane hydrates
Natural gas
Pore size distribution
Porosity
Porous media
Pressure drop
Saturation
Scale models
Stress concentration
Porous media
Pore network model
Hydrate
Dissociation
Depressurization
Online AccessGet full text

Cover

More Information
Summary:The production of natural gas from the gas hydrates has attracted significant attention over the last few decades. A continued challenge in gas hydrates is the estimation of the stored gas capacity. To alleviate this problem, this study uses the numerical modeling to provide insight into the distribution of hydrate in porous media and to obtain information about the application of high pressure for gas recovery. Hydrate dissociation process in porous media is modeled at the pore scale using pore network modeling by considering the uniform and non-uniform hydrate distribution. We explored the effect of gas clustering, saturation, and recovery, and their dependency on the underlying parameters including the pore size distribution, the applied pressure drops across the pore structures, and the initial hydrate saturation. We found that non-uniform hydrate distribution, larger pore sizes along with high-pressure drop, and higher initial hydrate saturations enhanced gas release. Additionally, our results confirmed the findings of the previous studies using 2D networks which studied pressure drop during hydrate dissociation in reservoirs.
ISSN:0169-3913
1573-1634
DOI:10.1007/s11242-018-1058-6