Case study: trapping mechanisms at the pilot-scale CO2 injection site, Nagaoka, Japan

Ziqiu Xue, Saeko Mito, Keigo Kitamura, Toshifumi Matsuoka

研究成果: ジャーナルへの寄稿会議記事査読

21 被引用数 (Scopus)


In this paper, we present the results of geophysical and geochemical observations at the Nagaoka site, where the first Japanese project on CO2 geological storage is currently underway. We collected formation water and rock samples from the reservoir, and conducted laboratory experiments to investigate the seismic wave response and geochemical reactions due to the CO2 injection under simulated in situ conditions. The results of time-lapse crosswell seismic tomography indicate an area of P-wave velocity decrease due to CO2 saturation, and the CO2-bearing zone near the injection well expanded clearly along the formation up dip direction during CO2 injection. The presence of CO2 was also identified by induction, sonic and neutron logging at the observation wells. The results of geochemical reactions demonstrated the potential of reservoir sandstones at the Nagaoka site for the effective solubility, ionic, and mineral trapping of CO2.

ジャーナルEnergy Procedia
出版ステータス出版済み - 2月 2009
イベント9th International Conference on Greenhouse Gas Control Technologies, GHGT-9 - Washington DC, 米国
継続期間: 11月 16 200811月 20 2008

!!!All Science Journal Classification (ASJC) codes

  • エネルギー(全般)


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