Patent ID: 8457899
Filing Date: 2013-06-04
Classification: G01V

Abstract:
1. A method of calculating a seismic noise image from data obtained from seismic prospecting of an earth formation, comprising the steps of: a) obtaining data representing a multicomponent seismic signal from at least one multicomponent seismic receiver at a receiver location in an earth formation, in response to seismic waves transmitted into the earth formation; b) obtaining a velocity model of the earth formation; c) determining, using the multicomponent seismic signal and, optionally, the velocity model, a plurality of wave field components; d) obtaining a set of second components, wherein each second component is proportional to a component of an object selected from the group consisting of: a unit ray vector for a receiver and a subsurface point, a multicomponent source wavefield, and a product of a source wave field and a unit ray vector for a receiver and subsurface point; e) obtaining, for each subsurface point, at least two products, each product comprising the product of a selected wave field component and a different second component; and f) generating a noise image by calculating at least one difference between different products for at least one image point;