Method and apparatus for implementing a high-resolution seismic pseudo-reflectivity image
AssigneeBP Corporation North America Inc.
InventorLi Jiang
Life of this patent
Estimating the term…
Abstract
A method for generating a high-resolution pseudo-reflectivity image of a subsurface region includes receiving seismic data associated with a subsurface region and captured by one or more seismic receivers, constructing a velocity model of the subsurface region based on the received seismic data, performing a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data, computing polarized normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data, and generating a pseudo-reflectivity image of the subsurface region based on both the computed polarized normal vectors.
Claims21
A method for generating a high-resolution pseudo-reflectivity image of a subsurface region, the method comprising:
- (a) receiving seismic data associated with a subsurface region and captured by one or more seismic receivers;
- (b) constructing a velocity model of the subsurface region based on the received seismic data;
- (c) performing a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data;
- (d) computing normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data;
- (e) computing a velocity gradient associated with the subsurface region based on the constructed velocity model;
- and
- (f) generating a pseudo-reflectivity image of the subsurface region based on both the computed normal vectors and the computed velocity gradient.
A method for generating a high-resolution pseudo-reflectivity image of a subsurface region, the method comprising:
- (a) receiving seismic data associated with a subsurface region and captured by one or more seismic receivers;
- (b) constructing a velocity model of the subsurface region based on the received seismic data;
- (c) performing a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data;
- (d) computing polarized normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data;
- and
- (e) generating a pseudo-reflectivity image of the subsurface region based on both the computed polarized normal vectors.
A system for generating a high-resolution pseudo-reflectivity image of a subsurface region, the system comprising:
- a processor;
- a non-transitory memory;
- and
- an application stored in the non-transitory memory that, when executed by the processor:
- receives seismic data associated with a subsurface region and captured by one or more seismic receivers;
- constructs a velocity model of the subsurface region based on the received seismic data;
- performs a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data;
- computes polarized normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data;
- computes a velocity gradient associated with the subsurface region based on the constructed velocity model;
- and
- generates a pseudo-reflectivity image of the subsurface region based on both the computed polarized normal vectors and the computed velocity gradient.
Dependencies are inferred from the claim text.