Study on role of simulation of possible leakage from geological CO 2 storage in sub-seabed for environmental impact assessment

Ryosuke Aoyagi, Osamu Kitamura, Kenshi Itaoka, Shuzo Igawa, Satoshi Suzuki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This paper summarizes the selection of short-term leakage scenarios and the results of numerical simulations based on the scenarios in order to assess the impact of CO2 on the ocean environment. Two leakage scenarios are considered: either CO2 migrates from an aquifer to the seafloor through two discontinuous faults, or it migrates through an abandoned well. The distribution and leakage amount of CO2 are estimated for each scenario by using the multi-phase flow simulator TOUGH2. Then, sensitivity analyses for parameters corresponding to the permeability of the leakage path are conducted. The results suggest that differences of permeability significantly affect the total amount and time at which CO2 leakage starts.

Original languageEnglish
Pages (from-to)3881-3888
Number of pages8
JournalEnergy Procedia
Volume4
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Energy(all)

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