High definition tomography for developing velocity models for use in determining broadband reflectivity images

摘要

A system and method are provided for determining a broadband high definition reflectivity based image for a geographical area of interest (GAI). The system and method generate 302 a conventional reflectivity image based on acquired seismic data for the GAI, generate 304 a high frequency (HF) velocity model of the GAI based on the acquired seismic data, convert 306 the HF velocity model into a low frequency (LF) reflectivity image, and adaptively merge 308 the LF reflectivity image with the conventional reflectivity image to form the broadband HD reflectivity image of the GAI. The conventional reflectivity image is bandwidth limited. The LF reflectivity image is one of a prestack depth migration image or a prestack time migration image.