公开(公告)号：US20170108600A1

公开(公告)日：2017-04-20

申请号：US15312344

申请日：2015-05-19

Applicant: CGG SERVICES SAS

Inventor： François-Xavier GRESILLON ,  Eric FORGUES

IPC: G01V1/155 ,  G01V1/02

CPC classification number: G01V1/155 ,  G01V1/159 ,  G01V1/38

Abstract: Systems and methods for a sea-floor seismic source are provided. The seismic source system includes a housing (102) having an internal cavity (104). The housing is configured to be coupled to a surface by gravity. The system further includes a coupling plate (106) fixed to a base (108) of the internal cavity. The coupling plate is configured to transmit energy through the base of the internal cavity and into the surface. The system also includes an excitation source (110) located in the internal cavity. The excitation source is configured to receive an input signal from a computing system communicatively coupled to the excitation source, and transmit energy to a reactive mass (112) located in the internal cavity and transmit energy to the coupling plate.

公开(公告)号：US20170242141A1

公开(公告)日：2017-08-24

申请号：US15503773

申请日：2015-09-08

Applicant: CGG SERVICES SAS

Inventor： Julien COTTON ,  Eric FORGUES

IPC: G01V1/30 ,  G01V1/28 ,  G01V1/36

CPC classification number: G01V1/30 ,  G01V1/282 ,  G01V1/36 ,  G01V2210/51

Abstract: Systems and methods for performing seismic migration using an indexed matrix are disclosed. The method includes receiving a seismic trace from a receiver, determining a discretized position of the receiver, and determining a discretized position of a seismic source. The method also includes determining a set of migration indexes based on a matrix, the discretized position of the receiver, and the discretized position of the seismic source, and determining a set of amplitude weights based on the matrix, the discretized position of the receiver, and the discretized position of the seismic source. The method further includes migrating the seismic trace based on the set of migration indexes and the set of amplitude weights.

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：US20180038972A1

公开(公告)日：2018-02-08

申请号：US15552962

申请日：2015-12-15

Applicant: CGG SERVICES SAS

Inventor： François-Xavier GRESILLON ,  Eric FORGUES

IPC: G01V1/145 ,  G01V1/02 ,  G01V1/52 ,  E21B49/00

CPC classification number: G01V1/145 ,  E21B49/00 ,  G01V1/143 ,  G01V1/159 ,  G01V1/52

Abstract: A reaction mass seismic survey source that is located in an underground casing. The seismic source includes a non-planar base plate; a reaction mass located on the non-planar base plate; and a flextensional element housed in a recess of the reaction mass and configured to vibrate the non-planar base plate when actuated, to generate seismic waves underground.

公开(公告)号：US20170371052A1

公开(公告)日：2017-12-28

申请号：US15528259

申请日：2015-12-11

Applicant: CGG SERVICES SAS

Inventor： Julien COTTON ,  Herve CHAURIS ,  Eric FORGUES

IPC: G01V1/30 ,  G01V99/00

CPC classification number: G01V1/308 ,  G01V99/005 ,  G01V2210/612

Abstract: A modified velocity model different from an initial velocity model is determined for migrating a vintage of 4D seismic data. The modified velocity model minimizes differences between a reference vintage migrated using the initial velocity model and the vintage migrated using the modified velocity model.