Enhancing The Acquisition And Processing Of Low Frequencies For Sub-Salt Imaging
    1.
    发明申请
    Enhancing The Acquisition And Processing Of Low Frequencies For Sub-Salt Imaging 有权
    加强子盐成像低频采集与处理

    公开(公告)号:US20080011540A1

    公开(公告)日:2008-01-17

    申请号:US11568531

    申请日:2004-06-16

    IPC分类号: G01V1/00

    CPC分类号: G01V1/3861 G01V1/38

    摘要: A method and apparatus for acquiring seismic signals from beneath a salt region in the earth. In one embodiment, the method includes tuning an air gun array to a first bubble oscillation; towing the air gun array in the water at a depth of at least 10 meters, in which the air gun array has a total volume in a range of about 6780 cubic inches to about 10,170 cubic inches; directing acoustic signals with the air gun array down through the water into the earth beneath the salt region; towing one or more seismic streamers in the water at one or more depths, in which at least one of the depths is at least 10 meters, in which each streamer comprises a plurality of hydrophones disposed therealong; and recording with the hydrophones seismic signals reflected from strata in the earth beneath the salt region.

    摘要翻译: 一种用于从地球上的盐区域下方获取地震信号的方法和装置。 在一个实施例中,该方法包括将气枪阵列调谐到第一气泡振荡; 在至少10米的深度的水中牵引气枪阵列,其中气枪阵列的总体积在约6780立方英寸至约10,170立方英寸的范围内; 将气枪阵列的声信号引导通过水进入盐区域下方的地球; 在水中的一个或多个深度牵引一个或多个地震拖缆,其中至少一个深度至少为10米,其中每个拖缆包括沿其设置的多个水听器; 并用盐水区域下方的地球上的地层反射的水听器记录地震信号。

    Source signature deconvolution method
    2.
    发明授权
    Source signature deconvolution method 有权
    源签名去卷积方法

    公开(公告)号:US07551515B2

    公开(公告)日:2009-06-23

    申请号:US11415033

    申请日:2006-05-01

    IPC分类号: G01V1/36 G01V1/38 G01V1/28

    摘要: A method of filtering seismic signals is described using the steps of obtaining the seismic signals generated by activating a seismic source and recording signals emanating from the source at one or more receivers; defining a source signature deconvolution filter to filter the seismic signal, wherein the filter is scaled by a frequency-dependent term based on an estimate of the signal-to-noise (S/N) based on the spectral power of a signal common to a suite of angle-dependent far-field signatures normalized by the total spectral power of the signatures within the angular suite and performing a source signature deconvolution using the source signature deconvolution filter.

    摘要翻译: 使用以下步骤来描述过滤地震信号的方法:获得通过激活地震源产生的地震信号并记录在一个或多个接收机处从源发出的信号; 定义源签名反卷积滤波器以对所述地震信号进行滤波,其中所述滤波器基于频率相关项,基于所述信噪比(S / N)的估计,基于所述信号共同的信号的频谱功率 由角度套件内的签名的总光谱功率归一化的角度依赖的远场签名套件,并使用源签名反卷积滤波器执行源签名反卷积。

    Source signature deconvolution method
    4.
    发明授权
    Source signature deconvolution method 有权
    源签名去卷积方法

    公开(公告)号:US07782708B2

    公开(公告)日:2010-08-24

    申请号:US12436557

    申请日:2009-05-06

    IPC分类号: G01V1/38

    摘要: A method of filtering seismic signals is described using the steps of obtaining the seismic signals generated by activating a seismic source and recording signals emanating from the source at one or more receivers; defining a source signature deconvolution filter to filter the seismic signal, wherein the filter is scaled by a frequency-dependent term based on an estimate of the signal-to-noise (S/N) based on the spectral power of a signal common to a suite of angle-dependent far-field signatures normalized by the total spectral power of the signatures within the angular suite and performing a source signature deconvolution using the source signature deconvolution filter.

    摘要翻译: 使用以下步骤来描述过滤地震信号的方法:获得通过激活地震源产生的地震信号并记录在一个或多个接收机处从源发出的信号; 定义源签名反卷积滤波器以对所述地震信号进行滤波,其中所述滤波器基于频率相关项,基于所述信噪比(S / N)的估计,基于所述信号共同的信号的频谱功率 由角度套件内的签名的总光谱功率归一化的角度依赖的远场签名套件,并使用源签名反卷积滤波器执行源签名反卷积。

    Marine seismic surveying
    6.
    发明授权
    Marine seismic surveying 失效
    海洋地震勘测

    公开(公告)号:US06846133B2

    公开(公告)日:2005-01-25

    申请号:US10275034

    申请日:2001-05-02

    IPC分类号: G01V1/38 H02G1/10

    摘要: A method of performing a seismic survey of earth formations beneath a body of water is disclosed. The method includes: (a) deploying a seismic cable having a plurality of seismic sensors distributed therealong in close proxmity to elongate locating means provided at the bottom of the body of water; (b) operating an acoustic source in the body of water to produce seismic signals which enter the formations; (c) detecting seismic signals which return from the formations with said sensors; and (d) removing the seismic cable from the bottom of the body of water.

    摘要翻译: 公开了一种对水体下方的地层进行地震勘测的方法。 该方法包括:(a)将具有多个地震传感器的地震缆索部署在靠近水面的细长定位装置上; (b)在水体中操作声源以产生进入地层的地震信号; (c)检测从地层与所述传感器返回的地震信号; 和(d)从水​​体底部移除地震电缆。

    Interpolation and/or extrapolation of seismic data
    7.
    发明授权
    Interpolation and/or extrapolation of seismic data 有权
    地震数据的插值和/或外推

    公开(公告)号:US08576662B2

    公开(公告)日:2013-11-05

    申请号:US12823335

    申请日:2010-06-25

    申请人: Philip Christie

    发明人: Philip Christie

    IPC分类号: G01V1/00

    摘要: A method of processing seismic data is provided in the seismic data is acquired at a plurality of locations and the method comprises interpolating and/or extrapolating the seismic data, thereby to estimate seismic data at a target location different from the plurality of locations. The interpolating and/or extrapolating the seismic data is performed in a polar co-ordinate system. The method may provide for, among other things, accuracy of estimation; particularly at short offsets from the seismic source. The polar co-ordinate system used may be chosen to approximate the seismic wavefront in an earth model, for example in an earth model in which properties vary only with depth.

    摘要翻译: 在多个位置处获取地震数据处理方法,该方法包括内插和/或外推地震数据,从而估计与多个位置不同的目标位置的地震数据。 在极坐标系中进行内插和/或外推地震数据。 该方法尤其可以提供估计的准确性; 特别是与地震源的短距离偏移。 可以选择使用的极坐标系来近似地球模型中的地震波前,例如在地球模型中,其中性质仅随着深度而变化。

    SOURCE SIGNATURE DECONVOLUTION METHOD
    8.
    发明申请
    SOURCE SIGNATURE DECONVOLUTION METHOD 有权
    源签名去卷积方法

    公开(公告)号:US20090213691A1

    公开(公告)日:2009-08-27

    申请号:US12436557

    申请日:2009-05-06

    IPC分类号: G01V1/36

    摘要: A method of filtering seismic signals is described using the steps of obtaining the seismic signals generated by activating a seismic source and recording signals emanating from the source at one or more receivers; defining a source signature deconvolution filter to filter the seismic signal, wherein the filter is scaled by a frequency-dependent term based on an estimate of the signal-to-noise (S/N) based on the spectral power of a signal common to a suite of angle-dependent far-field signatures normalized by the total spectral power of the signatures within the angular suite and performing a source signature deconvolution using the source signature deconvolution filter.

    摘要翻译: 使用以下步骤来描述过滤地震信号的方法:获得通过激活地震源产生的地震信号并记录在一个或多个接收机处从源发出的信号; 定义源签名反卷积滤波器以对所述地震信号进行滤波,其中所述滤波器基于频率相关项,基于所述信噪比(S / N)的估计,基于所述信号共同的信号的频谱功率 由角度套件内的签名的总光谱功率归一化的角度依赖的远场签名套件,并使用源签名反卷积滤波器执行源签名反卷积。

    Method of processing data
    9.
    发明授权
    Method of processing data 失效
    处理数据的方法

    公开(公告)号:US07003402B2

    公开(公告)日:2006-02-21

    申请号:US10479098

    申请日:2002-06-17

    IPC分类号: G01V1/28

    CPC分类号: G01V1/28 G01V2200/14

    摘要: A method of processing data sequences obtained at substantially the same time at locations spatially separated from one another is disclosed. A sequence indicative of a measure of spread of the data sequences or of selected data sequences is determined. A common signal data sequence may also be determined from the (selected) data sequences. The measure of spread of the data sequences is preferably normalized, for example relative to the absolute value of the common signal data sequence. The measure of spread is a measure of the noise to signal ratio in the initially-obtained data sequences. It may be used to control the parameters of other processing steps performed on the data sequences. Alternatively or additionally, the measure of spread may be output, for example for monitoring by an observer. The method can be applied to the processing of seismic data obtained using a single sensor seismic data acquisition system.

    摘要翻译: 公开了一种处理在彼此空间分离的位置处基本上同时获得的数据序列的方法。 确定指示数据序列或选定数据序列的扩展度量的序列。 也可以从(选择的)数据序列确定公共信号数据序列。 数据序列的扩展的度量优选地被标准化,例如相对于公共信号数据序列的绝对值。 扩展的度量是初始获得的数据序列中的噪声信号比的量度。 它可以用于控制对数据序列执行的其他处理步骤的参数。 或者或另外,可以输出扩散的度量,例如用于观察者的监视。 该方法可以应用于使用单个传感器地震数据采集系统获得的地震数据的处理。

    INTERPOLATION AND/OR EXTRAPOLATION OF SEISMIC DATA
    10.
    发明申请
    INTERPOLATION AND/OR EXTRAPOLATION OF SEISMIC DATA 有权
    地震数据的插值和/或提取

    公开(公告)号:US20100329078A1

    公开(公告)日:2010-12-30

    申请号:US12823335

    申请日:2010-06-25

    申请人: Philip Christie

    发明人: Philip Christie

    IPC分类号: G01V1/00

    摘要: A method of processing seismic data is provided in the seismic data is acquired at a plurality of locations and the method comprises interpolating and/or extrapolating the seismic data, thereby to estimate seismic data at a target location different from the plurality of locations. The interpolating and/or extrapolating the seismic data is performed in a polar co-ordinate system. The method may provide for, among other things, accuracy of estimation; particularly at short offsets from the seismic source. The polar co-ordinate system used may be chosen to approximate the seismic wavefront in an earth model, for example in an earth model in which properties vary only with depth.

    摘要翻译: 在多个位置处获取地震数据处理方法,该方法包括内插和/或外推地震数据,从而估计与多个位置不同的目标位置的地震数据。 在极坐标系中进行内插和/或外推地震数据。 该方法尤其可以提供估计的准确性; 特别是与地震源的短距离偏移。 可以选择使用的极坐标系来近似地球模型中的地震波前,例如在地球模型中,其中性质仅随着深度而变化。