METHOD FOR DETERMINING THE PRINCIPAL AXES OF AZIMUTHAL ANISOTROPY FROM SEISMIC P-WAVE DATA

摘要

A method for measuring the principal axis offracture-induced formation anisotropy. Amplitude vectorsare measured from CMP gathers oriented along in-line andcross-line wavefield trajectories. The amplitude vectorsare resolved with the known orientations the seismiclines of survey to estimate the azimuth of theanisotropic axis.