ESTIMATION OF COMPOSITE THERMAL CONDUCTIVITY OF A HETROGENEOUS METHANE HYDRATE SAMPLE USING iTOUGH2

ABSTRACT We determined the composite thermal conductivity (k θ ) of a porous methane hydrate sample (composed of hydrate, water, and methane gas) as a function of density using iTOUGH2. X-ray computed tomography (CT) was used to visualize and quantify the density changes that occurred during hydrate...

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Bibliographic Details
Main Authors: Arvind Gupta, Timothy J Kneafsey, George J Moridis, Yongkoo Seol, Michael B Kowalsky, E D Sloan Jr
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2006
Subjects:
Methane hydrate
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.9664
Description
Summary:ABSTRACT We determined the composite thermal conductivity (k θ ) of a porous methane hydrate sample (composed of hydrate, water, and methane gas) as a function of density using iTOUGH2. X-ray computed tomography (CT) was used to visualize and quantify the density changes that occurred during hydrate formation from granular ice. The composite thermal conductivity was estimated and validated by minimizing the differences between the observed and the predicted thermal response using history matching. The estimated density-dependent composite thermal conductivity ranged between 0.25 and 0.58 W/m/K.

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