Abstract

A new seismic subsurface imaging technology is presented for generating high-resolution, amplitude preserved, angle dependent reflectivity gathers in the local angle domain. Such local angle domain common image gathers (CIG) can be obtained from a multi arrival, ray based Common Reflection Angle Migration (CRAM) creating an uniform illumination at the subsurface image points from all directions. The Common Reflection Angle gathers are ideal input for Amplitude versus Angle (AVA) and pre-stack inversion studies since they are amplitude and phase preserved. We take a look at the results of using such CIG data as input to reservoir characterization workflows on Mumbai High field. Comparisons are made with conventional Kirchhoff migration results.