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    HIGH FIDELITY VIBRATORY SOURCE SEISMIC METHOD
    1.
    发明公开
    HIGH FIDELITY VIBRATORY SOURCE SEISMIC METHOD 失效
    与信号有益震震源地震PROCEDURE

    公开(公告)号：EP0824709A4

    公开(公告)日：2000-10-18

    申请号：EP96920141

    申请日：1996-05-03

    申请人： MOBIL OIL CORP

    发明人： ALLEN KENNETH PAUL

    IPC分类号： G01V1/36 ,  G01V1/37 ,  G01V1/24

    CPC分类号： G01V1/375 ,  G01V1/366 ,  G01V2210/324 ,  G01V2210/53

    摘要： A method for recording and pre-processing high fidelity vibratory seismic data includes measuring the motion of the vibrator (36) which is related to the vibrator applied force times a transfer function of minimum phase, causal, linar system relating the actual vibrator output with the measured vibrator motion, determining a ratio (52) by dividing the vibratory seismic data by the measured motion of the vibrator to remove the unknown applied force leaving the earcj reflectivity times a time derivative divided by a minimum phase function, minimum phase band pass filtering the resulting ratio and performing mimimum phase deconvolution to remove the time derivative divided by the transfer function of mimimum phase. The method may also include the steps of receiver ensemble deconvolution (56), statics correction (58), F-K filtering for noise (60), zero phase spiking deconvolution (64) and model dephasing (66). The actual signal that the vibrator (36) is sending into the ground is used in pre-processing.

    Coding seismic sources
    2.
    发明公开
    Coding seismic sources 失效
    Kodierung seisischer Quellen。

    公开(公告)号：EP0419245A2

    公开(公告)日：1991-03-27

    申请号：EP90310274.7

    申请日：1990-09-19

    申请人： TEXACO DEVELOPMENT CORPORATION

    发明人： Currie, William Stanley

    IPC分类号： G01V1/04 ,  G01V1/37

    CPC分类号： G01V1/375 ,  G01V1/005

    摘要： One or more seismic sources impart seismic pulses into the earth in a coded sequence. The coded sequence is composed of a minimum of three cycles of a Galois sequence of order N, where N is a positive integer. The response of subsurface formations to the coded sequence is obtained and correlated with one cycle of the outgoing Galois sequence of the same order. Correlation properties of the Galois sequences provide a way to sum a large number of seismograms that are superimposed in time, improving the signal to noise ratio while keeping the field time in which the seismograms are obtained to a minimum. Using this encoding technique, responses of subsurface formations to concurrent activation of each of several sources can be obtained and separated from each other.

    摘要翻译： 一个或多个地震源以编码顺序将地震脉冲传给地球。 编码序列由N阶Galois序列的最小三个周期组成，其中N是正整数。 获得地下构造对编码序列的响应，并与相同阶数的输出伽罗瓦序列的一个周期相关。 Galois序列的相关性提供了一种总结大量叠加在时间上的地震图的方法，从而提高信噪比，同时将获取地震图的场时间保持最小。 使用这种编码技术，可以获得并分离地下地层对几个源中的每一个的同时激活的响应。

    METHODS AND DATA PROCESSING APPARATUS FOR SEISMIC SIGNAL SEPARATION
    4.
    发明公开
    METHODS AND DATA PROCESSING APPARATUS FOR SEISMIC SIGNAL SEPARATION 审中-公开
    用于地震信号分离的方法和数据处理设备

    公开(公告)号：EP3260887A1

    公开(公告)日：2017-12-27

    申请号：EP17305761.3

    申请日：2017-06-21

    申请人： CGG Services SAS

    发明人： POOLE, Gordon ,  TEYSSANDIER, Benoît

    IPC分类号： G01V1/00 ,  G01V1/37

    CPC分类号： G01V1/36 ,  G01V1/005 ,  G01V1/32 ,  G01V1/375 ,  G01V1/38 ,  G01V2210/26

    摘要： There is a method for correcting seismic wave propagation paths through the earth. The method includes determining (600) a first fixed shooting sequence for a first bandlimited seismic source (210); determining (602) a second shooting sequence for a second bandlimited seismic source (220), 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 (604) raw seismic data recorded with seismic receivers (252) 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 (606) 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 (608) 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.

    摘要翻译： 有一种方法可以校正通过地球的地震波传播路径。 该方法包括确定（600）第一限带地震源（210）的第一固定拍摄序列; 确定（602）用于第二限带地震源（220）的第二拍摄序列，其中所述第二拍摄序列包括对应于第二能量发射的第二拍摄位置，并且所述第二能量发射与所述第一能量发射不同 发射时间，相位和振幅; 接收（604）由地震接收器（252）记录并且作为第一和第二能量发射的结果而产生的原始地震数据，其中原始地震数据表示从第一和第二限带地震源到地震接收器的地震波路径 ; 将所述原始地震数据分离（606）为对应于所述第一限带震源的第一限带集合和对应于所述第二限带震源的第二带限集合; 以及基于第一和第二频带限制集合中的至少一个来校正（608）从第一和第二频带限制地震源到地震接收器的地震波路径。

    VIBRO SEISMIC SOURCE SEPARATION AND ACQUISITION
    5.
    发明公开
    VIBRO SEISMIC SOURCE SEPARATION AND ACQUISITION 有权
    分离和检测VIBROSEISMISCHER来源

    公开(公告)号：EP3014305A1

    公开(公告)日：2016-05-04

    申请号：EP14735521.8

    申请日：2014-06-26

    申请人： CGG Services SA

    发明人： GUILLOUET, Matthieu ,  WINTER, Olivier ,  BIANCHI, Thomas

    IPC分类号： G01V1/00 ,  G01V1/37

    CPC分类号： G01V1/375 ,  G01V1/005 ,  G01V2210/50

    摘要： 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.

    Device and method for computing depth velocity variations
    10.
    发明公开
    Device and method for computing depth velocity variations 审中-公开
    用于计算深度速度变化的设备和方法

    公开(公告)号：EP2594964A2

    公开(公告)日：2013-05-22

    申请号：EP12193654.6

    申请日：2012-11-21

    申请人： CGGVeritas Services S.A.

    发明人： De Cacqueray, Benoît ,  Bianchi, Thomas ,  Roux, Philippe ,  Campillo, Michel ,  Catheline, Stefan

    IPC分类号： G01V1/36

    CPC分类号： G01V1/36 ,  G01V1/00 ,  G01V1/28 ,  G01V1/305 ,  G01V1/308 ,  G01V1/34 ,  G01V1/366 ,  G01V1/375 ,  G01V1/38 ,  G01V2210/32 ,  G01V2210/53 ,  G01V2210/612 ,  G01V2210/6122

    摘要： Method, computer device and software for calculating a corrected temporal variation (dt 1 ) depth or a corrected relative temporal variation (dt 1 /t 1 ) depth of a first body wave (26) based on a second body wave (24). The method includes receiving raw seismic data recorded with a receiver; calculating arrival-time variations for the first and second body waves (24, 26); calculating first and second relative temporal variations for the first and second body waves (24, 26); and correcting the first relative temporal variation based on the second relative temporal variation to obtain the corrected relative temporal variation or correcting the first temporal variation based on the second temporal variation to obtain the corrected temporal variation. A body wave is a wave that experiences at least one reflection before being recorded by the receiver.

    摘要翻译： 用于基于第二体波（24）计算第一体波（26）的校正时间变化（dt1）深度或校正相对时间变化（dt1 / t1）深度的方法，计算机设备和软件。 该方法包括接收用接收器记录的原始地震数据; 计算第一和第二体波（24,26）的到达时间变化; 计算第一和第二体波（24,26）的第一和第二相对时间变化; 以及基于所述第二相对时间变化校正所述第一相对时间变化以获得所述校正的相对时间变化或基于所述第二时间变化校正所述第一时间变化以获得所述校正的时间变化。 体波是在被接收器记录之前经历至少一次反射的波。