System and method for estimating seismic anisotropy with high resolution

摘要

A system and method for estimating seismic anisotropy of subsurface formations with high resolution. A method for determining anisotropy parameters of subsurface formations includes generating a synthetic reflectivity gather from a vertical well log. Times of a surface seismic gather are adjusted to those of the synthetic gather. Low-cut filtering is applied to the surface seismic gather. Anisotropy parameters are generated as a difference of the filtered seismic gather and the synthetic gather. An anisotropy value is assigned to each of plurality of layers of a formation based on the generated anisotropy parameters.

主权项

1. A method for determining anisotropy parameters of subsurface formations, comprising:
generating a synthetic reflectivity gather from a vertical well log; adjusting times of a surface seismic gather to those of the synthetic gather; low-cut filtering the surface seismic gather; generating anisotropy parameters as a difference of the filtered seismic gather and the synthetic gather; and assigning an anisotropy value to each of a plurality of layers of a formation based on the generated anisotropy parameters.