公开(公告)号：WO2015097557A2

公开(公告)日：2015-07-02

申请号：PCT/IB2014/003133

申请日：2014-12-19

Applicant: CGG SERVICES SA

Inventor： CASTOR, Kaelig ,  WINTER, Olivier ,  BIANCHI, Thomas

IPC: G01V1/02

CPC classification number: G01V1/04

Abstract: A system and method for reducing noise in a seismic vibratory source is disclosed. The method includes generating an initial pilot signal for the seismic vibratory source, receiving a source signature based on the initial pilot signal, estimating a noise component of the source signature based on the source signature and the initial pilot signal, generating an anti-noise correction for the initial pilot signal based on the noise component of the source signature, and computing a modified pilot signal based on the initial pilot signal and the anti-noise correction.

Abstract translation: 公开了一种降低地震振动源噪声的系统和方法。 该方法包括产生用于地震振动源的初始导频信号，基于初始导频信号接收源签名，基于源签名和初始导频信号估计源签名的噪声分量，产生抗噪声校正 基于源签名的噪声分量对初始导频信号进行初始导频信号的计算，并且基于初始导频信号和抗噪声校正来计算修正导频信号。

公开(公告)号：WO2014207148A1

公开(公告)日：2014-12-31

申请号：PCT/EP2014/063600

申请日：2014-06-26

Applicant: CGG SERVICES SA

Inventor： GUILLOUET, Matthieu ,  WINTER, Olivier ,  BIANCHI, Thomas

IPC: G01V1/00 ,  G01V1/37

CPC classification number: G01V1/375 ,  G01V1/005 ,  G01V2210/50

Abstract: Methods and systems for separating seismic data acquired using a plurality of substantially simultaneously fired sources are described. The sources use sweep sequences having low cross correlation levels to generate seismic waves, and their source signatures are determined. Using the source signatures, the wave fields associated with each of the sources are extracted from the seismic data by, for example, performing a time domain deconvolution.

Abstract translation: 描述用于分离使用多个基本上同时燃烧的源获取的地震数据的方法和系统。 源使用具有低互相关水平的扫描序列来产生地震波，并且确定其源特征。 使用源签名，通过例如执行时域反卷积从地震数据中提取与每个源相关联的波场。

公开(公告)号：WO2015125010A2

公开(公告)日：2015-08-27

申请号：PCT/IB2015/000263

申请日：2015-02-04

Applicant: CGG SERVICES SA

Inventor： WINTER, Olivier

CPC classification number: G01V1/364 ,  G01V1/005 ,  G01V1/368 ,  G01V1/37 ,  G01V2210/1214 ,  G01V2210/32 ,  G01V2210/34

Abstract: A method for attenuating noise in seismic data signals is described wherein seismic signals are transmitted using a pseudo-random frequency sweep signal. Noise is then attenuated from the resulting, acquired seismic data on pre-phase subtraction basis, e.g., before correlating or de-convolving the acquired seismic data. In this way, repetitions associated with, for example, diversity stacking techniques can be avoided.

Abstract translation: 描述了一种用于衰减地震数据信号中的噪声的方法，其中使用伪随机频率扫描信号发射地震信号。 然后，在相位减法的基础上，例如在对所获取的地震数据进行相关或解卷积之前，从所得到的获取的地震数据中衰减噪声。 以这种方式，可以避免与例如分集堆叠技术相关联的重复。

公开(公告)号：WO2014177614A2

公开(公告)日：2014-11-06

申请号：PCT/EP2014/058825

申请日：2014-04-30

Applicant: CGG SERVICES SA

Inventor： BIANCHI, Thomas ,  MEUNIER, Julien ,  WINTER, Olivier

IPC: G01V1/04

CPC classification number: G01V1/005 ,  G01V1/09 ,  G01V2210/127

Abstract: Methods for seismic exploration of a subsurface formation increase productivity by simultaneously actuating closely located vibratory sources. Individual vibrations generated by different sources actuated simultaneously are encoded to enable separation of seismic data corresponding to each of the individual vibrations.

Abstract translation: 地下地层地震勘探方法通过同时启动紧密定位的振动源来提高生产率。 对由不同来源同时激活的各个振动进行编码，以便分离与各个振动对应的地震数据。