Azimuthal Anisotropy Characterization Using 3D Multi-azimuth Towed Streamer Dataset

Understanding the spatial orientation of fractured reservoirs and the stress field around them is essential for the development of an oil reservoir. Fractures and stress create anisotropy effects that can be observed in seismic data. The preferred method for analysing anisotropy from data is the amplitude variation with offset and azimuth (AVOA). Because of the ambiguity in the directions obtained using this method, attenuation is increasingly being used to fully characterise these environments with confidence. This abstract demonstrates through a case study the potential of using attenuation variations with offset and azimuth (QVOA) from a multi-azimuth towed streamer dataset. The results show a dominant direction of maximum attenuation that could be related to the presence of the local stress field.