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| | Abstract | | We presented a theoretical relationship between seismic attenuation and CO2 saturation for the well logs of Nagaoka site at the former SEGJ conference. The result suggests that the large seismic attenuation would be observed at the small CO2 saturation for partially saturated rocks. Thus, the attenuation will be very useful to monitor the CO2 leakage from the storage layers, because it enables us to detect small amount of CO2 in the earlier stage of leakage. In this paper, we provide the result of the application to laboratory dataset for limestone samples. We computed the Q value from the laboratory data using the theoretical model, and compared them to the measured Q values. The result shows the good agreement between the computed values and measurements, and our model is validated consequently. |
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