Japan Geoscience Union Meeting 2015

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Oral

Symbol H (Human Geosciences) » H-RE Resource and Engineering Geology

[H-RE28] CCUS (Carbon Dioxide Capture, Utilization, and Storage) for Climate Mitigation

Mon. May 25, 2015 4:15 PM - 5:00 PM 105 (1F)

Convener:*Tomochika Tokunaga(Department of Environment Systems, University of Tokyo), Ziqiu Xue(Research Institute of Innovative Tech for the Earth), Masao Sorai(Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology), Chair:Masaatsu Aichi(Graduate School of Frontier Sciences, University of Tokyo)

4:51 PM - 4:54 PM

[HRE28-P03] Prediction of changes in geophysical observables associated with CO2 migration through vertical faults

3-min talk in an oral session

*Tsuneo ISHIDO1, Mituhiko SUGIHARA1, Nobukazu SOMA1, Yuji NISHI1 (1.AIST)

Keywords:reservoir simulation, geophysical monitoring, potential risk, CO2 geological storage

To appraise the utility of geophysical measurements in detecting potential CO2 migration through vertical faults, we carried out numerical simulations based on a hypothetical aquifer model and calculate changes in geophysical observables caused by changing underground conditions as computed by the reservoir simulation.
Considering that frequent repetition of reflection surveys, especially 3D surveys, seems to be unrealistic due to its high cost, continuous gravity measurements using superconducting gravimeters are quite promising for lowering monitoring costs by complementing standard time-lapse reflection surveys.
Useful geophysical techniques depend on characteristics of each injection site. We need further studies of various techniques including surface deformation, self-potential and electromagnetic measurements suitable for injection sites under various geological conditions.

Acknowledgement: This research is funded and supported by Ministry of Economy, Trade and Industry (METI).