Measurement of thermal conductivity of artificial hydrate sediment sample

Yoshitaka Yamamoto, Taro Kawamura, Michica Ohtake, Takeshi Komai, Fumio Nakagawa, Tomoya Tsuji, Yuichi Tsukada

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


The thermal conductivity of artificial methane hydrate sediment was measured at atmospheric and also at the higher-pressure conditions, which imitates the actual hydrate sediment area under seabed. The hydrate powder for this experiment was synthesized by solid-liquid interface method at the condition of 268.15K, 8.0MPa. Synthesized hydrate powder was mixed with "Toyoura Standard Sand " and compressed to make artificial hydrate sediment pellet. Thermal conductivities of hydrate pellets were measured by hot disc transient method. Relationship between thermal conductivity of hydrate sample and sample properties (gas content, mixing ratio with sand) was investigated with some mixing models such as series model, parallel model and distribution model. Distribution model showed the best agreement with our measured values. However, it seems depend on the structure of hydrate sediment. To evaluate applicability of mixing models to real field, it is important to get the detailed information of structure on the naturally occurring real hydrate sediment.

Original languageEnglish
Pages (from-to)36-40
Number of pages5
JournalProceedings of the International Offshore and Polar Engineering Conference
Publication statusPublished - 2004
Externally publishedYes
EventThe Fourteenth International Offshore and Polar Engineering Conference - ISOPE 2004 - Toulon, France
Duration: 2004 May 232004 May 28


  • Artificial hydrate sediment
  • Energy resource
  • Gas hydrate
  • Hot disc transient method
  • Offshore
  • Thermal conductivity
  • Toyoura standard sand

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering


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