Fracture evaluation based on the geometrical attributes of 3D seismic data in the Yamagawa geothermal field

Abstract

Geometrical attribute analysis was applied to the 3D seismic data acquired in the Yamagawa geothermal field, Japan. In particular, coherence attributes have been often used to illuminate discontinuous portions of reflection surfaces in the processed seismic image. The coherence attribute showed consistency with the other geometrical attributes of dip/dip azimuth and curvatures. Lineaments extracted from the coherence attribute were consistent with the natural fractures detected on the borehole image logs in the reservoir section of these production wells.