公开(公告)号：US20180292556A1

公开(公告)日：2018-10-11

申请号：US15518260

申请日：2015-10-22

Applicant: CGG SERVICES SAS

Inventor： Julien COTTON ,  Cecile BERRON ,  Benoit DE CACQUERAY ,  Florian DURET ,  Eric FORGUES

IPC: G01V1/36

Abstract: Systems and methods for deghosting seismic data using migration of sparse arrays are disclosed. The methods may include obtaining input seismic data, the input seismic data including a first set of seismic data recorded by a first set of seismic receivers located at a first depth, and a second set of seismic data recorded by a second set of seismic receivers located at a second depth. The method may further include migrating the first set of seismic data to an image grid, and migrating the second set of seismic data to the image grid. Additionally, the method may further include calculating a ghost wave based on the first and second sets of migrated seismic data, and deghosting the first set of migrated seismic data by removing the ghost wave.

公开(公告)号：US20170343690A1

公开(公告)日：2017-11-30

申请号：US15581202

申请日：2017-04-28

Applicant: CGG SERVICES SAS

Inventor： Florian DURET

IPC: G01V1/30 ,  G01V1/36 ,  G06N5/04 ,  G06N99/00

CPC classification number: G01V1/303 ,  G01V1/28 ,  G01V1/36 ,  G01V2210/582 ,  G01V2210/6222 ,  G06N5/045 ,  G06N20/00

Abstract: Device and method for calculating a set of surface wave dispersion curves. The method includes receiving seismic data recorded with seismic sensors over an area to be surveyed; selecting region units that cover the area to be surveyed; gathering traces for the region units; processing in a computing device the traces to obtain a set of candidate measurements for each region unit; teaching a decision algorithm based on a first subset of the set of candidate measurements; and calculating the set of surface wave dispersion curves by running the decision algorithm on a second subset of the set of candidate measurements.