Methane Hydrate Dissociation by Depressurization in Sediments with Different Hydrate Saturations in Cubic Hydrate Simulator

The methane dissociation phenomena from hydrate-bearing sediment with different hydrate saturations by depressurization are experimentally investigated in the cubic hydrate simulator (CHS). The experiments have been carried out over the hydrate saturation range of 16.0%-40.7%. The hydrate dissociati...

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Published inEnergy procedia Vol. 61; pp. 990 - 994
Main Authors Zhang, Yu, Li, Xiao-Sen, Chen, Zhao-Yang, Ruan, Xu-Ke, Huang, Ning-Sheng
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2014
Subjects
Depressurization
Hydrate dissociation
Hydrate saturation
Sediment
Three-dimensional
Hydrate dissociation
Sediment
Three-dimensional
Depressurization
Hydrate saturation
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Summary:The methane dissociation phenomena from hydrate-bearing sediment with different hydrate saturations by depressurization are experimentally investigated in the cubic hydrate simulator (CHS). The experiments have been carried out over the hydrate saturation range of 16.0%-40.7%. The hydrate dissociation process consists of two periods: depressurizing and steady pressure. In different experiments, the cumulative gas productions are similar in the depressurizing period and increase with the hydrate saturation in the steady pressure period. The average gas production rate increases with the increase of the hydrate saturation while decreases at the hydrate saturation of 40.7% in the steady pressure period. The temperature in different regions in the reactor changes by similar degrees in the depressurizing period and has the similar lowest values for different experiments.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2014.11.1010