CO2 Monitoring by Using VSP-FWI-Synthetic Study on CO2-saturation and pressure-buildup differentiation

T. Tsuchiya, N. Yamada, U. P. Iskandar, M. Kurihara, C. Barnes, M. Charara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationEAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections
Subtitle of host publicationCCS and CO2-EOR
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages117-121
Number of pages5
ISBN (Electronic)9781510850781
DOIs
Publication statusPublished - 2017 Jan 1
EventEAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR - Trondheim, Norway
Duration: 2017 Aug 282017 Aug 31

Publication series

NameEAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR

Other

OtherEAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR
CountryNorway
CityTrondheim
Period17/8/2817/8/31

ASJC Scopus subject areas

  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Geology

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    Tsuchiya, T., Yamada, N., Iskandar, U. P., Kurihara, M., Barnes, C., & Charara, M. (2017). CO2 Monitoring by Using VSP-FWI-Synthetic Study on CO2-saturation and pressure-buildup differentiation. In EAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR (pp. 117-121). (EAGE/SEG Research Workshop 2017 on Geophysical Monitoring of CO2 Injections: CCS and CO2-EOR). European Association of Geoscientists and Engineers, EAGE. https://doi.org/10.3997/2214-4609.201701953