TY - GEN
T1 - CO2 Monitoring by Using VSP-FWI-Synthetic Study on CO2-saturation and pressure-buildup differentiation
AU - Tsuchiya, T.
AU - Yamada, N.
AU - Iskandar, U. P.
AU - Kurihara, M.
AU - Barnes, C.
AU - Charara, M.
PY - 2017
Y1 - 2017
N2 - Synthetic study on CO2-saturation and pressure-buildup differentiation by using VSP-FWI is conducted in a virtual CCS site. Geophysical and Reservoir simulation works are first implemented to create geophysical models before and after CO2 injection. Virtual VSP-FWI monitoring experiment is then implemented on the models. In parallel with this, simple linear equations to estimate CO2-saturation and pressure-buildup are derived. Inverted P-and S-wave velocities through the VSP-FWI are found to be highly accurate, and used in the derived equation. As a result the saturation change and reduction of differential pressure are estimated consistently with the values after reservoir simulation. This result indicates that CO2-saturation and pressurebuildup can be differentiated around the well, if both P-and S-wave velocities are accurately inferred by applying VSP-FWI and relevant rock-physics model is known.
AB - Synthetic study on CO2-saturation and pressure-buildup differentiation by using VSP-FWI is conducted in a virtual CCS site. Geophysical and Reservoir simulation works are first implemented to create geophysical models before and after CO2 injection. Virtual VSP-FWI monitoring experiment is then implemented on the models. In parallel with this, simple linear equations to estimate CO2-saturation and pressure-buildup are derived. Inverted P-and S-wave velocities through the VSP-FWI are found to be highly accurate, and used in the derived equation. As a result the saturation change and reduction of differential pressure are estimated consistently with the values after reservoir simulation. This result indicates that CO2-saturation and pressurebuildup can be differentiated around the well, if both P-and S-wave velocities are accurately inferred by applying VSP-FWI and relevant rock-physics model is known.
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U2 - 10.3997/2214-4609.201701953
DO - 10.3997/2214-4609.201701953
M3 - Conference contribution
AN - SCOPUS:85039855994
T3 - EAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR
SP - 117
EP - 121
BT - EAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections
PB - European Association of Geoscientists and Engineers, EAGE
T2 - EAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR
Y2 - 28 August 2017 through 31 August 2017
ER -