Characterization of hydraulic permeability and pore-size distribution of methane hydrate-bearing sediment using proton nuclear magnetic resonance measurement

Hideki Minagawa, Kosuke Egawa, Yasuhide Sakamoto, Takeshi Komai, Norio Tenma, Hideo Narita

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A proton nuclear magnetic resonance (NMR) system combined with a permeability measurement system has been used to clarify the relation between permeability and a methane-hydrate saturation in methane-hydrate-bearing sediment with regard to effective pore-size distribution. Pore-size distributions of sediments have been calculated using the relaxation time distribution of NMR-T2. Two different laboratory methods for growing gas hydrate in sediment cores have been used to determine the relationship between hydrate saturation and permeability: a conventional approach called the connate water method, and a dissolved-gas method. The 2 methods produced different permeability and pore-size distribution of sediment.

Original languageEnglish
Pages (from-to)306-313
Number of pages8
JournalInternational Journal of Offshore and Polar Engineering
Volume22
Issue number4
Publication statusPublished - 2012 Dec 4
Externally publishedYes

Keywords

  • Methane-hydrate-bearing sediment
  • NMR
  • Permeability
  • Pore-size distribution

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Mechanical Engineering

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