SYSTEM AND METHOD FOR VELOCITY ANALYSIS IN THE PRESENCE OF CRITICAL REFLECTIONS
    71.
    发明申请
    SYSTEM AND METHOD FOR VELOCITY ANALYSIS IN THE PRESENCE OF CRITICAL REFLECTIONS 有权
    关键反映存在的速度分析系统与方法

    公开(公告)号:US20160109592A1

    公开(公告)日:2016-04-21

    申请号:US14516975

    申请日:2014-10-17

    IPC分类号: G01V1/30 G01V1/36

    CPC分类号: G01V1/303 G01V1/282 G01V1/368

    摘要: A method is described for processing residual moveout in seismic image data gathers representing critical reflections. The method includes receiving seismic image data arranged as a function of an angle or offset parameter including a high-velocity-contrast event with post-critical. The method also includes applying a wavelet de-stretch filter to the seismic data to correct wavelet stretching. The method also includes applying a fan-filter to remove coherent noise in the one or more post-critical traces; picking residual moveout of the high-velocity-contrast event; adjacent-trace differencing to detect the impact of phase change at critical reflections in residual moveouts, and applying a median-filter to the residual moveout to reduce the impact of phase change of the high-velocity-contrast event in the one or more post-critical traces. The median-filtered and reconstructed residual moveout is used for improving a velocity model used for generating the seismic image gathers.

    摘要翻译: 描述了一种处理代表临界反射的地震图像数据采集中的残余移动的方法。 该方法包括接收地震图像数据,该地震图像数据被布置为包括具有后临界的高速对比度事件的角度或偏移参数的函数。 该方法还包括将小波去拉伸滤波器应用于地震数据以校正小波拉伸。 该方法还包括应用风扇滤波器以消除所述一个或多个后关键轨迹中的相干噪声; 选择高速对比度事件的剩余移动; 相邻轨迹差异来检测临界反射在残余偏移中的相位变化的影响,以及将中值滤波器应用于残余偏移,以减少高速对比度事件在一个或多个后处理中的相位变化的影响。 关键痕迹 中值滤波和重构的残余移动用于改进用于生成地震图像聚集的速度模型。

    SYSTEM AND METHOD FOR SEISMIC IMAGING OF A COMPLEX SUBSURFACE
    72.
    发明申请
    SYSTEM AND METHOD FOR SEISMIC IMAGING OF A COMPLEX SUBSURFACE 审中-公开
    复杂地表的地震成像系统与方法

    公开(公告)号:US20150378039A1

    公开(公告)日:2015-12-31

    申请号:US14317331

    申请日:2014-06-27

    IPC分类号: G01V1/28 G01V1/30

    摘要: Seismic data may be processed to improve a geologic model of a subsurface volume of interest by receiving an initial geologic model, generating a γ-parameter family of models by perturbing parameters of an initial geologic model, migrating the seismic data using each of the models in the γ-parameter family of models to generate a set of migration images, constructing a γ-volume by scanning the set of migration images wherein each location in the γ-volume is assigned a value representing a preference of one of the migration images; and inverting the γ-volume.

    摘要翻译: 可以处理地震数据以通过接收初始地质模型来改善地下地下体积的地质模型,通过扰动初始地质模型的参数产生γ参数族模型,使用每个模型的地震数据迁移 用于生成一组迁移图像的γ参数族,通过扫描所述一组迁移图像来构造γ体积,其中γ体积中的每个位置被分配有代表偏移图像之一的偏好的值; 并反转γ体积。

    Interference avoidance
    74.
    发明授权
    Interference avoidance 失效
    干扰避免

    公开(公告)号:US08761679B2

    公开(公告)日:2014-06-24

    申请号:US12235006

    申请日:2008-09-22

    申请人: Yue Wang Justin Coon

    发明人: Yue Wang Justin Coon

    摘要: A method of shaping signals intended for transmission via at least one antenna, each signal having a respective frequency spectrum and being for transmission via a respective antenna, comprises selecting at least one interference-reducing signal, each interference-reducing signal being such as to modify the signal frequency spectrum for the antenna or a respective one of the antennas to include a respective frequency notch at an interference band, and modifying the frequency spectra with the selected interference-reducing signal or signals, wherein the selection is subject to a constraint on at least one characteristic of the spectra as modified

    摘要翻译: 一种整形用于经由至少一个天线传输的信号的方法,每个信号具有相应的频谱并经由相应的天线进行传输,包括选择至少一个减少干扰的信号,每个干扰减小信号要进行修改 天线的信号频谱或相应的一个天线包括在干扰频带处的相应频率陷波,以及利用所选择的干扰减少信号或信号修改频谱,其中选择受到对 光谱的至少一个特征被修改

    System and method for seismic data modeling and migration
    75.
    发明授权
    System and method for seismic data modeling and migration 有权
    地震数据建模与迁移的系统与方法

    公开(公告)号:US08614930B2

    公开(公告)日:2013-12-24

    申请号:US13069951

    申请日:2011-03-23

    IPC分类号: G01V1/36 G01V1/28

    摘要: A system and computer-implemented method for accounting for temporal dispersion in low-order finite difference seismic wave propagation is disclosed. An embodiment of the method includes transforming a seismic dataset from time domain to frequency domain to obtain a frequency-domain seismic dataset, applying a frequency-domain time varying filter to the frequency-domain seismic dataset to obtain a filtered frequency-domain seismic dataset, and transforming the filtered frequency-domain seismic dataset from the frequency domain to the time domain to obtain a time-domain filtered seismic dataset. The frequency-domain time varying filter is based on the effective phase velocity inherent in a finite-difference solution to the wave equation. The frequency-domain time varying filter may be applied to a synthetic seismic dataset that was generated by low-order finite difference modeling. A different frequency-domain time varying filter may be applied to recorded seismic data prior to reverse time migration.

    摘要翻译: 公开了一种用于计算低阶有限差分地震波传播中的时间色散的系统和计算机实现的方法。 该方法的实施例包括将地震数据集从时域变换到频域以获得频域地震数据集,将频域时变滤波器应用于频域地震数据集以获得滤波后的频域地震数据集, 并将滤波后的频域地震数据集从频域转换为时域,以获得时域滤波的地震数据集。 频域时变滤波器基于有限差分解与波动方程有关的有效相位速度。 频域时变滤波器可以应用于由低阶有限差分建模产生的合成地震数据集。 在反向时间迁移之前,可以将不同的频域时变滤波器应用于记录的地震数据。

    Wireless communications apparatus
    76.
    发明授权
    Wireless communications apparatus 有权
    无线通信装置

    公开(公告)号:US08442590B2

    公开(公告)日:2013-05-14

    申请号:US12352798

    申请日:2009-01-13

    IPC分类号: H04W16/28

    CPC分类号: H04B7/0617

    摘要: Determining a beamforming vector for a multi-antenna transmitter commences by determining an eigen-beamformer vector from the channel matrix and, for a number of iterations commencing with the eigen-beamformer vector, rotating the vector into a reference direction in vector space such that application of the rotated vector would result in peak radiation being directed in said reference direction, sampling a radiation pattern associated with the rotated eigen-beamformer vector with respect to transmission direction, compressing resultant samples to reduce spatial directivity induced by the vector, developing a rotated candidate beamformer on the basis of said compressed samples and returning said rotated candidate beamformer to the orientation of said vector before said rotating and storing said resultant vector as a candidate vector. Then, the candidate vectors are compared for the iterations and one is selected for use which best meets one or more selection criteria.

    摘要翻译: 通过从信道矩阵确定特征波束形成器向量,确定多天线发射机的波束形成向量,并且对于从本征波束形成器向量开始的多个迭代,将向量旋转到向量空间中的参考方向,使得应用 将导致峰值辐射在所述参考方向上被引导,对相对于传播方向采样与旋转的特征波束形成器矢量相关联的辐射图案,压缩所得样本以减小由矢量引起的空间方向性,开发旋转的候选者 基于所述压缩样本的波束形成器,并且在所述旋转之前将所述旋转的候选波束形成器返回到所述矢量的方向,并将所述合成矢量存储为候选矢量。 然后,比较候选向量进行迭代,并选择一个候选向量,使其最符合一个或多个选择标准。

    Method of operating a block transmission based communication apparatus
    77.
    发明授权
    Method of operating a block transmission based communication apparatus 有权
    操作基于块传输的通信设备的方法

    公开(公告)号:US08416874B2

    公开(公告)日:2013-04-09

    申请号:US12559084

    申请日:2009-09-14

    申请人: Yue Wang Justin Coon

    发明人: Yue Wang Justin Coon

    IPC分类号: H04B7/02 H04K1/02

    摘要: A block of information is processed before transmission thereof in a block transmission based communication. This comprises inserting a cyclic prefix and a cyclic suffix into the block of information before applying a time reversal based prefilter prior to transmission to the data after cyclic prefix and cyclic suffix insertion, the prefilter being configured on the basis of knowledge of the condition of the channel over which communication is to be effected. Then, at the receiver, a removal operation is operable to remove the effect of cyclic prefix and suffix insertion, leaving a circulant shifted version of the original block. This can be decoded using a diagonal matrix containing frequency domain channel coefficients on its diagonal entries after FFT. For systems with more than two transmit antennas, this facilities the use of full rate OSTBC, regardless of whether real or complex signaling is transmitted.

    摘要翻译: 在基于块传输的通信中,在其发送之前处理信息块。 这包括在循环前缀和循环后缀插入之前传送到数据之前,在应用基于时间反向的前置滤波器之前将循环前缀和循环后缀插入到信息块中,该预滤波器是基于对 要进行通信的通道。 然后,在接收机处,去除操作可以消除循环前缀和后缀插入的影响,留下原始块的循环移位版本。 这可以使用在FFT之后的对角条目上包含频域信道系数的对角矩阵进行解码。 对于具有两个以上发射天线的系统,无论实际或复合信号是否传输,都可以使用全速率OSTBC。

    Method for target-oriented reverse time migration for prestack depth imaging
    78.
    发明授权
    Method for target-oriented reverse time migration for prestack depth imaging 有权
    用于叠前深度成像的面向目标反向时间偏移的方法

    公开(公告)号:US08275550B2

    公开(公告)日:2012-09-25

    申请号:US12418343

    申请日:2009-04-03

    申请人: Wei Liu Yue Wang

    发明人: Wei Liu Yue Wang

    IPC分类号: G01V1/40 G01V1/00 G06G7/48

    摘要: A method and system for target-oriented reverse time migration for prestack depth imaging. One embodiment of the present invention includes determining an acquisition area within an earth model and also determining a reference surface near a target in the subsurface region of interest. The embodiment includes exciting wavefields from the reference surface and propagating the excited wavefields through the earth model. The embodiment additionally includes recording the wavefields at receiver locations in the acquisition area and at the target and synthesizing wavefields along the reference surface to reconstruct Green's functions which relate the receiver locations in the acquisition area to the target. The embodiment includes utilizing the Green's functions and prestack seismic data to determine subsurface characteristics of the subsurface region.

    摘要翻译: 用于叠前深度成像的面向目标反向时间偏移的方法和系统。 本发明的一个实施例包括确定地球模型内的获取区域,并且还确定感兴趣的地下区域中的目标附近的参考表面。 该实施例包括来自参考表面的激发波场并且通过地球模型传播激发的波场。 该实施例另外包括将波场记录在采集区域和目标处的接收器位置处,并且沿着参考表面合成波场,以重建将捕获区域中的接收器位置与目标相关联的格林函数。 该实施例包括利用Green的功能和叠前地震数据来确定地下区域的地下特性。

    SYSTEM AND METHOD FOR ATTENUATING ALIASING IN SEISMIC DATA CAUSED BY ACQUISITION GEOMETRY
    80.
    发明申请
    SYSTEM AND METHOD FOR ATTENUATING ALIASING IN SEISMIC DATA CAUSED BY ACQUISITION GEOMETRY 有权
    通过收购几何导致地震数据衰减的系统和方法

    公开(公告)号:US20110205846A1

    公开(公告)日:2011-08-25

    申请号:US12712450

    申请日:2010-02-25

    申请人: Yue Wang

    发明人: Yue Wang

    IPC分类号: G01V1/00

    摘要: Seismic data representing the propagation of seismic energy through a geologic volume of interest is processed. The seismic energy propagates through the geologic volume of interest from one or more source locations at or near the geologic volume of interest to one or more detector locations at or near the geologic volume of interest. In processing the seismic data, the seismic energy is modeled as beams (e.g., Gaussian beams). The processing includes determining a filter for the seismic data that attenuates aliasing which may be present in the seismic data due to spacing between detector locations.

    摘要翻译: 处理表示地震能量通过感兴趣的地质体积传播的地震数据。 地震能量通过感兴趣的地质体积从感兴趣的地质体积处或附近的一个或多个源位置传播到感兴趣的地质体积处或附近的一个或多个检测器位置。 在处理地震数据时,将地震能量建模为波束(如高斯波束)。 该处理包括确定用于衰减由于检测器位置之间的间隔而可能存在于地震数据中的混叠的地震数据的滤波器。