Method for simulating local prestack depth migrated seismic images
First Claim
Patent Images
1. Method simulating local prestack depth migrated images on basis of a model of a selected GF-node, comprising:
- defining station points from acquisition surfaces;
calcaulating the GF;
extracting at the GF-node scattering wavenumbers K;
creating at the GF-node K-filters in a scattering wavenumber domain;
applying the K-filters to a target model in the scattering wavenumber domain; and
obtaining a simulated local image by transformation from the K-domain to a space domain, wherein said method is conducted without the use of real or synthetic recorded data.
1 Assignment
0 Petitions
Accused Products
Abstract
A method, article of manufacture, and data set for simulating seismic prestack depth migrated images on the basis of a model of a selected GF-node, without the use of real or synthetic recorded data, provides a very efficient and flexible way to calculate a simulated depth migrated image as a function of parameters such as survey, overburden model, pulse, elastic wavefield, and local reflectivity structure. Important information needed for the method is the scattering wavenumber, calculated for example, by ray methods and other equivalent methods. Complex model geometry can be done in 2-D and 3-D.
-
Citations
25 Claims
-
1. Method simulating local prestack depth migrated images on basis of a model of a selected GF-node, comprising:
-
defining station points from acquisition surfaces; calcaulating the GF; extracting at the GF-node scattering wavenumbers K; creating at the GF-node K-filters in a scattering wavenumber domain; applying the K-filters to a target model in the scattering wavenumber domain; and
obtaining a simulated local image by transformation from the K-domain to a space domain, wherein said method is conducted without the use of real or synthetic recorded data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of producing a data set representing the simulated prestack local images comprising:
-
(a) extracting at the GF-node scattering wavenumbers K; (b) creating at the GF-node K-filters in a scattering wavenumber domain; (c) applying the K-filters to a target model in the scattering wavenumber domain; and (d) obtaining a simulated local image by transformation from the K-domain to a space domain;
wherein the method is conducted without the use of real or synthetic recorded data.
-
-
17. Method simulating seismic traces on basis of a model of a selected Gf-node, comprising
extracting at the GF-node scattering wavenumbers K and traveltime; -
creating at the GF-node and along a given K, 1D K-filters, also called 1D K-signals, in a frequency domain; applying the 1D K-signals to a target model along a given K and in the frequency domain; and
obtaining a simulated seismic trace by transformation from the frequency domain to a time domain, wherein the method is conducted without the use of real or synthetic recorded data. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
-
25. A method of producing a data set representing simulated seismic traces, comprising:
-
(a) extracting at the GF-node scattering wavenumbers K and traveltime; (b) creating at the GF-node and along a given K, 1D K-filters, also called 1D K-signals, in a frequency domain; (c) applying the 1D K-signals to a target model along a given K in the frequency domain; and (d) obtaining a simulated seismic trace by transformation from the frequency domain to a time domain, wherein the method is conducted without the use of real or synthetic recorded data.
-
Specification