SEGJ Technical Conference

Validation of seismic attenuation by dynamic strain anomaly detection in a digital core sample --- three dimensional analysis and visualization

Abstract To elucidate the relationship between seismic attenuation phenomena observed in various seismic methods at widely different frequencies and fractures developed in carbonate reservoirs and to elucidate the rock physics mechanism responsible for those phenomena associated with fractures, we propose a novel method to measure dynamic properties of weak zones caused by fractures in a broadband frequency by calculating strain anomaly from seismic waveforms. The characteristic of our proposed method is that we conduct 3D numerical simulation in a broadband frequency on a digital core produced by an X-ray computed tomography (CT). Our previous study described the concept and workflow of our proposed method and then apply the proposed method to core plugs acquired in an Abu Dhabi oil field. In this study, we expand on the study of our previous study to investigate the applicability of our proposed method on 3D analysis and visualization.