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    FILTERING ACOUSTIC WAVEFORMS IN DOWNHOLE ENVIRONMENTS
    1.
    发明申请
    FILTERING ACOUSTIC WAVEFORMS IN DOWNHOLE ENVIRONMENTS 有权
    在井下环境中滤波声波

    公开(公告)号：US20120147702A1

    公开(公告)日：2012-06-14

    申请号：US13310780

    申请日：2011-12-04

    申请人： Henri-Pierre Valero ,  Shinichi Sunaga ,  Takeshi Endo

    发明人： Henri-Pierre Valero ,  Shinichi Sunaga ,  Takeshi Endo

    IPC分类号： G01V1/40

    CPC分类号： G01V1/48 ,  G01V1/44 ,  G01V2210/23

    摘要： Methods and apparatus to filter acoustic waveforms in downhole environments are described. An example method involves receiving acoustic waveform data representing acoustic signals traversing at least a portion of a borehole adjacent a subterranean formation and performing a direct transform operation on the acoustic waveform data to generate wavelet map data. The wavelet map data comprises a time-frequency representation of the acoustic waveform data. The example method also involves identifying a waveform of interest via the wavelet map data, extracting data associated with the waveform of interest from the wavelet map data, generating filtered wavelet map data based on the extracted data, and performing an inverse transform operation on the filtered wavelet map data to generate filtered acoustic waveform data

    摘要翻译： 描述了在井下环境中滤波声波的方法和装置。 示例性方法包括接收表示穿过邻近地层的钻孔的至少一部分的声信号的声波形数据，并且对声波形数据执行直接变换操作以产生小波图数据。 小波图数据包括声波形数据的时间 - 频率表示。 该示例方法还涉及通过小波变换图数据识别感兴趣的波形，从小波变换数据中提取与感兴趣波形相关联的数据，基于所提取的数据产生滤波后的小波变换数据，并对经滤波的 小波图数据生成滤波后的声波形数据

    Seismic Spectral Balancing
    2.
    发明申请
    Seismic Spectral Balancing 审中-公开

    公开(公告)号：US20180024263A1

    公开(公告)日：2018-01-25

    申请号：US15632376

    申请日：2017-06-25

    申请人： Schlumberger Technology Corporation

    发明人： Victor Aarre ,  Sergio Courtade

    IPC分类号： G01V1/36

    CPC分类号： G01V1/364 ,  G01V1/362 ,  G01V2210/21 ,  G01V2210/23 ,  G01V2210/52 ,  G01V2210/584

    摘要： A method can include receiving seismic data that has an associated bandwidth; for a number of frequency bands, for a number of frequency bands, iteratively filtering and adjusting the seismic data by applying band-pass filters to extract information associated with each of the frequency bands where the adjusting the seismic data includes, after each iteration, subtracting extracted information from the seismic data prior to a subsequent iteration; balancing the extracted information to generate spectrally balanced seismic data; and outputting the spectrally balanced seismic data.

    ESTIMATION OF Q-FACTOR IN TIME DOMAIN
    4.
    发明申请
    ESTIMATION OF Q-FACTOR IN TIME DOMAIN 审中-公开
    时域中Q因子的估计

    公开(公告)号：US20140336940A1

    公开(公告)日：2014-11-13

    申请号：US14272362

    申请日：2014-05-07

    申请人： SCHLUMBERGER TECHNOLOGY CORPORATION

    发明人： PIERRE BETTINELLI ,  JEAN-CLAUDE PUECH

    IPC分类号： G01V1/28

    CPC分类号： G01V1/282 ,  G01V1/306 ,  G01V2210/22 ,  G01V2210/23 ,  G01V2210/584

    摘要： A method can include receiving seismic traces associated with a geologic environment; determining time domain stretch values for individual wavelets in at least a portion of the seismic traces with respect to a spatial dimension of the geologic environment; and estimating at least one Q-factor value for at least a portion of the geologic environment via a comparison of the time domain stretch values to a Q-factor model.

    摘要翻译： 一种方法可以包括接收与地质环境相关联的地震迹线; 确定相对于地质环境的空间维度的地震迹线的至少一部分中的各个小波的时域拉伸值; 以及通过将所述时域拉伸值与Q因子模型的比较来估计所述地质环境的至少一部分的至少一个Q因子值。

    SYSTEM AND METHOD FOR ATTENUATING NOISE IN SEISMIC DATA
    5.
    发明申请
    SYSTEM AND METHOD FOR ATTENUATING NOISE IN SEISMIC DATA 审中-公开
    地震数据中噪声的系统和方法

    公开(公告)号：US20140278118A1

    公开(公告)日：2014-09-18

    申请号：US13803944

    申请日：2013-03-14

    申请人： Sandra Tegtmeier-Last ,  Bogdan Lukasz Kustowski ,  Douglas William Clark ,  Gilles Hennenfent ,  Harry Martin

    发明人： Sandra Tegtmeier-Last ,  Bogdan Lukasz Kustowski ,  Douglas William Clark ,  Gilles Hennenfent ,  Harry Martin

    IPC分类号： G01V1/36

    CPC分类号： G01V1/364 ,  G01V2210/23 ,  G01V2210/24 ,  G01V2210/3246 ,  G01V2210/40 ,  G01V2210/42

    摘要： A system and method for attenuating noise in seismic data representative of a subsurface region of interest including receiving a seismic dataset representative of seismic signal or seismic noise and a seismic dataset representative of seismic signal and noise, transforming them into a domain were they have sparse or compressible representation, comparing the sets of coefficients to identify desirable coefficients in the set of coefficients representing the signal and noise dataset, selecting the desirable coefficients to produce an improved set of coefficients, and inverse transforming the improved set of coefficients to produce a modified seismic dataset. The modified seismic dataset may be noise-attenuated seismic data or may be a noise model that is subtracted from the original data to produce noise-attenuated data.

    摘要翻译： 用于衰减地震数据中表示地下感兴趣区域的噪声的系统和方法，包括接收代表地震信号或地震噪声的地震数据集，以及代表地震信号和噪声的地震数据集，将其变换为域，它们具有稀疏或 可压缩表示，比较系数集合以识别表示信号和噪声数据集的系数集合中的期望系数，选择期望的系数以产生改进的系数集合，以及逆变换改进的系数集合以产生经修改的地震数据集 。 改进的地震数据集可以是噪声衰减的地震数据，或者可以是从原始数据中减去的噪声模型，以产生噪声衰减的数据。

    Phase control of seismic data
    6.
    发明授权
    Phase control of seismic data 有权
    地震资料的相位控制

    公开(公告)号：US07627433B2

    公开(公告)日：2009-12-01

    申请号：US10560975

    申请日：2004-05-20

    申请人： Richard E. Duren ,  Andrew P. Shatilo ,  Mohamed T. Hadidi

    发明人： Richard E. Duren ,  Andrew P. Shatilo ,  Mohamed T. Hadidi

    IPC分类号： G01V1/00 ,  G06F17/40

    CPC分类号： G01V1/364 ,  G01V2210/23

    摘要： Method for controlling the phase spectrum of seismic data to match assumptions inherent in subsequent processing steps. The source signature, after processing with the same initial processing steps used on the data, is used to design a phase control filter that shapes the seismic data to have a minimum phase spectrum or whatever other phase spectrum the subsequent processing algorithms may assume. The processed data is then filtered with a second phase-control filter, also designed using the parallel-processed signature, to shape the data to zero phase or whatever other phase may be desired for interpretation of the data.

    摘要翻译： 用于控制地震数据的相位谱以匹配后续处理步骤中固有的假设的方法。 在使用与数据相同的初始处理步骤进行处理之后，源签名用于设计相位控制滤波器，其将地震数据整形为具有最小相位谱或随后的处理算法可以采用的任何其它相位谱。 然后用第二相位控制滤波器对处理后的数据进行滤波，第二相位控制滤波器也使用并行处理的特征进行设计，以将数据整形为零相位，或者为了解释数据可能需要任何其他相位。

    Filtering acoustic waveforms in downhole environments
    9.
    发明授权
    Filtering acoustic waveforms in downhole environments 有权
    在井下环境中滤波声波

    公开(公告)号：US08848484B2

    公开(公告)日：2014-09-30

    申请号：US13310780

    申请日：2011-12-04

    申请人： Henri-Pierre Valero ,  Shinichi Sunaga ,  Takeshi Endo

    发明人： Henri-Pierre Valero ,  Shinichi Sunaga ,  Takeshi Endo

    IPC分类号： G01V1/48 ,  G01V1/44

    CPC分类号： G01V1/48 ,  G01V1/44 ,  G01V2210/23

    摘要： Methods and apparatus to filter acoustic waveforms in downhole environments are described. An example method involves receiving acoustic waveform data representing acoustic signals traversing at least a portion of a borehole adjacent a subterranean formation and performing a direct transform operation on the acoustic waveform data to generate wavelet map data. The wavelet map data comprises a time-frequency representation of the acoustic waveform data. The example method also involves identifying a waveform of interest via the wavelet map data, extracting data associated with the waveform of interest from the wavelet map data, generating filtered wavelet map data based on the extracted data, and performing an inverse transform operation on the filtered wavelet map data to generate filtered acoustic waveform data

    摘要翻译： 描述了在井下环境中滤波声波的方法和装置。 示例性方法包括接收表示穿过邻近地层的钻孔的至少一部分的声信号的声波形数据，并且对声波形数据执行直接变换操作以产生小波图数据。 小波图数据包括声波形数据的时间 - 频率表示。 该示例方法还涉及通过小波变换图数据识别感兴趣的波形，从小波变换数据中提取与感兴趣波形相关联的数据，基于所提取的数据产生滤波后的小波变换数据，并对经滤波的 小波图数据生成滤波后的声波形数据

    Method for eliminating spectral constraints of acquisition system and earth filtering effects
    10.
    发明申请
    Method for eliminating spectral constraints of acquisition system and earth filtering effects 有权
    消除采集系统频谱约束和地球滤波效应的方法

    公开(公告)号：US20120259553A1

    公开(公告)日：2012-10-11

    申请号：US13066036

    申请日：2011-04-05

    申请人： Gregory Ernest Parkes ,  Stian Hegna ,  Anthony James Day

    发明人： Gregory Ernest Parkes ,  Stian Hegna ,  Anthony James Day

    IPC分类号： G01V1/36 ,  G06F19/00 ,  G01V1/38

    CPC分类号： G01V1/364 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/22 ,  G01V2210/23 ,  G01V2210/56

    摘要： Recorded seismic data are represented as a convolution of operators representing a reflectivity series of the earth and a seismic wavelet. The recorded seismic wavelet is represented as a convolution of operators representing a receiver ghost, a source ghost, a ghost-free source system response, an earth filter response, and a receiver system response. The operator representing the receiver ghost is removed from the convolution representing the seismic wavelet. The operator representing the source ghost is removed from the convolution representing the seismic wavelet. The operator representing the ghost-free source response is removed from the convolution representing the seismic wavelet. The operator representing the earth filter response is removed from the convolution representing the seismic wavelet. The operator representing the seismic wavelet is removed from the convolution representing the recorded seismic data.

    摘要翻译： 记录的地震数据被表示为表示地球和地震小波的反射系列的运算符的卷积。 记录的地震小波被表示为代表接收机重影，源幽灵，无重影源系统响应，地球滤波器响应和接收机系统响应的运算符的卷积。 代表接收机重影的算子从表示地震小波的卷积中去除。 代表源幽灵的算子从表示地震小波的卷积中去除。 表示无重影源响应的运算符从代表地震小波的卷积中去除。 表示地球滤波器响应的算子从表示地震小波的卷积中去除。 代表地震小波的算子从表示记录的地震数据的卷积中去除。