SYSTEM AND METHOD FOR HIGH RESOLUTION SEISMIC IMAGING

摘要

A method is described for high-resolution seismic imaging of complex subsurface volumes using a two-stage least-squares reverse time migration with two objective functions. A traveltime misfit objective function enables long-wavelength imaging and an amplitude misfit objective function enables short-wavelength imaging. The method may be executed by a computer system.

主权项

1. A computer-implemented method of seismic imaging, comprising:
a. receiving, at a computer processor, a seismic dataset representative of a subsurface volume of interest and a velocity model; b. transforming, via the computer processor, the seismic dataset into a high-resolution seismic image by a two-stage least-squares reverse time migration wherein a first stage derives a long-wavelength seismic image using a weighted normalized correlation-based traveltime misfit objective function and a second stage corrects short-wavelength details in the long-wavelength seismic image using an amplitude misfit objective function to generate the high-resolution seismic image; and c. identifying geologic features based on the high-resolution seismic image.