Estimation of changes in the reservoir reflection coefficient due to CO2 injection at Ketzin Site, Germany

Yang, C.; Juhlin, Christopher; Fan, W.; Ivanova, A.

Access Status

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Authors

Yang, C.

Juhlin, Christopher

Fan, W.

Ivanova, A.

Date

2011

Type

Conference Paper

Metadata

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Citation

Yang, C. and Juhlin, C. and Fan, W. and Ivanova, A. 2011. Estimation of changes in the reservoir reflection coefficient due to CO2 injection at Ketzin Site, Germany, in Proceedings of the 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011, May 23-26 2011, pp. 5492-5494. Vienna: European Association of Geoscientists & Engineers.

Source Title

73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011

Additional URLs

http://www.earthdoc.org/publication/publicationdetails/?publication=50931

ISBN

9781617829666

School

Department of Exploration Geophysics

URI

http://hdl.handle.net/20.500.11937/42228

Collection

Curtin Research Publications

Abstract

Seismic amplitude information and data from an injection well (IW) and an observation well (OW2) are used to estimate reflection coefficients. Seismic volumes are extracted near the two boreholes from a baseline and a monitor survey. An anhydrite layer above the reservoir generates a high amplitude reflection and this is used for calibration. The amplitude equation of Ghaderi and Landro (2009) is used to estimate R0 for the reservoir. In the IW it is between 0.1-0.12 and in OW2 it is between 0.1-0.14 for the baseline survey. These values correspond well to logging data, providing confidence in our approach. We use the same method on the monitor survey and find R0 in the IW is now in the range 0.26-0.31 and R0 in OW2 is now 0.13-0.16, indicating lower CO2 saturation in OW2.