公开(公告)号：US20170371053A1

公开(公告)日：2017-12-28

申请号：US15630019

申请日：2017-06-22

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE ,  Benoit TEYSSANDIER

IPC: G01V1/36 ,  G01V1/38 ,  G01V1/32

CPC classification number: G01V1/36 ,  G01V1/005 ,  G01V1/32 ,  G01V1/375 ,  G01V1/38 ,  G01V2210/26

Abstract: There is a method for correcting seismic wave propagation paths through the earth. The method includes determining a first fixed shooting sequence for a first bandlimited seismic source; determining a second shooting sequence for a second bandlimited seismic source, wherein the second shooting sequence includes second shooting positions that correspond to second energy emissions, and the second energy emissions differ from the first energy emissions in at least one of an emission time, phase and amplitude; receiving raw seismic data recorded with seismic receivers and generated as a result of the first and second energy emissions, wherein the raw seismic data is indicative of seismic wave paths from the first and second bandlimited seismic sources to the seismic receivers; separating the raw seismic data into a first bandlimited set corresponding to the first bandlimited seismic source and a second bandlimited set corresponding to the second bandlimited seismic source; and correcting the seismic wave paths, from the first and second bandlimited seismic sources to the seismic receivers, based on at least one of the first and second bandlimited sets.

公开(公告)号：US20170102469A1

公开(公告)日：2017-04-13

申请号：US15388081

申请日：2016-12-22

Applicant: CGG SERVICES SAS

Inventor： Laurent RUET ,  Robert DOWLE ,  Benoit TEYSSANDIER

IPC: G01V1/135

CPC classification number: G01V1/135 ,  G01V1/005 ,  G01V1/133 ,  G01V1/143 ,  G01V1/38 ,  G01V13/00 ,  G10K11/18 ,  Y10T29/49005 ,  Y10T29/49826

Abstract: A method for generating acoustic waves under water includes actuating first and second pistons with an actuator system provided inside an enclosure of a source element, to generate a wave having a first frequency, and actuating the first and second pistons with a pressure mechanism attached to the enclosure, to control a pressure of a fluid inside the enclosure such that a pressure of the fluid is substantially equal to an ambient pressure of the enclosure. The enclosure has first and second openings and the first and second pistons are configured to close the first and second openings.

公开(公告)号：US20170371070A1

公开(公告)日：2017-12-28

申请号：US15589235

申请日：2017-05-08

Applicant: CGG SERVICES SAS

Inventor： Benoit TEYSSANDIER ,  John James SALLAS

IPC: G01V13/00 ,  G01V1/38

Abstract: Computing device, software and method for calibrating pilot and drive signals of a marine seismic source array using measured data. The method includes receiving a source array geometry and a model of the source array; estimating an initial overall response of the source array based on numerical simulations, the model of the source array, and the source array geometry; generating the pilot and drive signals for the source array based on the initial overall response; determining individual responses of the source elements, which form the source array, based on the source array geometry, the model of the source array, and first measured data; calculating an actual overall response of the source array based on the pilot and drive signals, the model of the source array and second measured data; and adjusting the pilot and drive signals based on the actual overall response of the source array.