Feasibility of azimuthal anisotropy determination using P-wave reflection amplitude from a walkaround VSP

摘要

A walkaround vertical seismic profile (VSP) survey offers full-azimuth seismic measurements for fracture or stress-field characterization near a well. Since downhole geophones may be placed close to a target zone, high quality P-wave reflection data can be obtained to study seismic amplitude anisotropy or provide key parameters for possible calibration of surface seismic amplitude versus offset and azimuth (AVOAz).