Sand production model in gas hydrate-bearing sediments

Shun Uchida, Assaf Klar, Koji Yamamoto

Research output: Contribution to journalArticlepeer-review


This paper provides a comprehensive analytical formulation that entails the features of sand production in gas hydrate-bearing sediments, including grain detachment, migration, sediment deformation and hydrate dissociation. The formulation is thermo-hydro-mechanically coupled such that grain detachment causes stress reduction, sediment shear deformation induces grain detachment and grain flow alters multiphase fluid pressure and temperature profiles. Through a series of analyses, the sensitivity of sand production related parameters on resulting solid volume changes is evaluated. Furthermore, the effect of various operational methods on mitigating sand production in hydrate-bearing sediments during gas production is numerically investigated. It is found that, out of the different operational methods investigated, lowering depressurization rate was the most effective in reducing sand production for a given gas production.

Original languageEnglish
Pages (from-to)303-316
Number of pages14
JournalInternational Journal of Rock Mechanics and Mining Sciences
StatePublished - 1 Jul 2016


  • Gas hydrate
  • Gas production
  • Hydrate dissociation
  • Hydrate-bearing sediments
  • Numerical modeling
  • Sand production

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology


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