Simulation of gas production from hydrate reservoirs (AT1) of Eastern Nankai Trough Japan

Yongchang Feng, Lin Chen, Sukru Merey, Koorthedath Pullayikodi Lijith, Devendra N. Singh, Atsuki Komiya, Shigenao Maruyama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Gas hydrates are regarded as one of the most promising alternative sources of energy, which have the potential to address the energy demand of the contemporary society. Based on the field explorations in the Eastern Nankai Trough (Japan), a multilayered hydrate reservoir model has been conceptualised and its behaviours during depressurisation production are simulated. This model incorporates the effects of the initial reservoir temperature and permeability on the mechanism of hydrate dissociation, which in turn affects the gas production. It is shown that the dissociation process is largely affected by the initial temperature distribution within the reservoir layers, and the 'warmer' reservoirs show (consistently) higher production potential. Furthermore, the gas production could be improved, significantly, by increasing the permeability of the wellbore region, which can be achieved through the fracturing process. The close match between the simulation results and the field tests is noteworthy. The proposed multilayered model would be quite useful for analysing the efficacy of the 'production strategy', in most real-life situations.

Original languageEnglish
JournalEnvironmental Geotechnics
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • energy
  • marine geotechnics
  • numerical methods

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal
  • Geochemistry and Petrology
  • Nature and Landscape Conservation
  • Management, Monitoring, Policy and Law

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