Seismic modeling of the AVO/AVA response to CO2 injection at the Ketzin site, Germany
2013 (English)Conference paper (Refereed)
Over 64 kilotons of CO2 have been injected (May, 2013) into a heterogeneous sandstone reservoir (saline aquifer) at 630-650 m depth. 4D seismics have been applied to monitor CO2 at the Ketzin site. However, the obtained time-lapse seismic signals have been so far interpreted as being caused by fluid saturation changes only. Modeling of the AVO/AVA response allows us to study two kinds of effects: CO2-saturation- and pore-pressure-related effects. Our results indicate that it is rather infeasible to discriminate between both these effects at the Ketzin site dealing with the real seismic data with limited signal/noise ratios.
Place, publisher, year, edition, pages
2013. Vol. 40, 490-498 p.
, Energy Procedia, ISSN 1876-6102 ; 40
CO2 storage, seismic monitoring, AVA/AVO, petrophysics, pore pressure, fluid saturation
IdentifiersURN: urn:nbn:se:uu:diva-210139DOI: 10.1016/j.egypro.2013.08.056ISI: 000345364200056OAI: oai:DiVA.org:uu-210139DiVA: diva2:661290
General Assembly of the Division-on-Energy-Resources-and-the-Environment of European-Geosciences-Union