Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan

Takahiro Funatsu, Y. Kano, X. Lei, S. Nakao

Research output: Contribution to conferencePaper

Abstract

In the CO2 geo-sequestration, CO2 gas is injected into deep aquifer by high injection pressure. As the results, the pore pressure will be increase from the initial state. This is corresponding to decreasing "effective stress", which is acting on the reservoir and cap rock system. The change in effective stress causes the geomechanical response of deep strata, e.g. deformation of rock, induced seismicity. We evaluated the geomechanical stability of reservoir and caprock at Tomakomai candidate site in order to evaluate the effect of planned CO2 injection on geomechanical stability of the reservoir based on "slip tendency". The slip tendency around injection point where maximum pore pressure built-up was estimated about 0.495, which means geomechanical instability will unlikely occur by planned CO2 injection.

Original languageEnglish
Publication statusPublished - Jan 1 2013
EventInternational Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage - Lausanne, Switzerland
Duration: Nov 26 2013Nov 28 2013

Other

OtherInternational Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage
CountrySwitzerland
CityLausanne
Period11/26/1311/28/13

Fingerprint

reservoir rock
effective stress
stability analysis
pore pressure
Japan
rocks
injection
induced seismicity
cap rock
carbon sequestration
tendencies
slip
aquifer
porosity
aquifers
strata
gas
caps
rock
causes

All Science Journal Classification (ASJC) codes

  • Geophysics

Cite this

Funatsu, T., Kano, Y., Lei, X., & Nakao, S. (2013). Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan. Paper presented at International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage, Lausanne, Switzerland.

Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan. / Funatsu, Takahiro; Kano, Y.; Lei, X.; Nakao, S.

2013. Paper presented at International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage, Lausanne, Switzerland.

Research output: Contribution to conferencePaper

Funatsu, T, Kano, Y, Lei, X & Nakao, S 2013, 'Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan', Paper presented at International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage, Lausanne, Switzerland, 11/26/13 - 11/28/13.
Funatsu T, Kano Y, Lei X, Nakao S. Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan. 2013. Paper presented at International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage, Lausanne, Switzerland.
Funatsu, Takahiro ; Kano, Y. ; Lei, X. ; Nakao, S. / Geomechanical stability analysis of reservoir rock related to CO2 injection in Japan. Paper presented at International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage, Lausanne, Switzerland.
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