公开(公告)号：US08750072B2

公开(公告)日：2014-06-10

申请号：US13258170

申请日：2009-04-16

申请人： Mingqiu Luo ,  Shengwen Jin

发明人： Mingqiu Luo ,  Shengwen Jin

IPC分类号： G01V1/30 ,  G01V1/28

CPC分类号： G01V1/301 ,  G01V1/28 ,  G01V2210/63 ,  G01V2210/675

摘要： In various disclosed seismic imaging systems and methods, a fast target-oriented illumination calculation technique is employed to obtain a data volume or “matrix” of approximate illumination values. These illumination values enable an image matrix of “true reflectivity” values to be found. The illumination values are derived from Green's functions which, rather than being calculated and re-calculated on a shot-by-shot basis, are calculated in multi-shot groups and combined with a rolling-sum to greatly reduce the computational overhead. As a consequence, the disclosed systems and methods can provide target region illuminations more quickly and/or with higher quality than those systems relying on conventional 3D wave-equation illumination.

摘要翻译： 在各种公开的地震成像系统和方法中，采用快速目标定向照明计算技术来获得近似照明值的数据量或“矩阵”。 这些照明值使得能够找到“真实反射率”值的图像矩阵。 照明值来源于格林函数，而不是按照逐帧计算和重新计算，而是以多组为单位计算，并与滚动和相结合，大大减少了计算开销。 因此，所公开的系统和方法可以比依赖于常规3D波动方程照明的系统更快速和/或更高质量地提供目标区域照明。

公开(公告)号：US08116168B1

公开(公告)日：2012-02-14

申请号：US12214342

申请日：2008-06-18

申请人： Mingqiu Luo ,  Shengwen Jin

发明人： Mingqiu Luo ,  Shengwen Jin

IPC分类号： G01V1/00

CPC分类号： G01V1/282 ,  G01V2210/512 ,  G01V2210/67

摘要： A migration method using hybrid one-way and full-way (HOF) wave equation propagation. The HOF method extrapolates seismic wavefields in less complex media with a one-way wave equation propagator and extrapolates seismic wavefields in extremely complex media with a full-way wave equation propagator. For prestack depth migration, the HOF extrapolates source-side and receiver-side wavefields independently. Frequency-space domain and time-space domain imaging conditions are applied to the one-way and the full-way extrapolated wavefields, respectively. A suitable amplitude matching factor is introduced to combine the one-way and full-way images. The HOF method is a cost-effective migration that produces superior image quality with less noises and less computational resources.

摘要翻译： 使用混合单向和全向（HOF）波方程传播的迁移方法。 HOF方法用单向波方程传播器外推较小复杂介质中的地震波场，并用全方位波方程传播器在非常复杂的介质中外推地震波场。 对于叠前深度偏移，HOF独立地外推了源侧和接收器侧波场。 频域和时空域成像条件分别应用于单向和全向外推波场。 引入合适的幅度匹配因子来组合单向和全向图像。 HOF方法是一种经济有效的迁移，可以产生出色的图像质量，噪音更小，计算资源更少。

公开(公告)号：US20120020186A1

公开(公告)日：2012-01-26

申请号：US13258170

申请日：2009-04-16

申请人： Mingqiu Luo ,  Shengwen Jin

发明人： Mingqiu Luo ,  Shengwen Jin

IPC分类号： G01V1/38

CPC分类号： G01V1/301 ,  G01V1/28 ,  G01V2210/63 ,  G01V2210/675

摘要： In various disclosed seismic imaging systems and methods, a fast target-oriented illumination calculation technique is employed to obtain a data volume or “matrix” of approximate illumination values. These illumination values enable an image matrix of “true reflectivity” values to be found. The illumination values are derived from Green's functions which, rather than being calculated and re-calculated on a shot-by-shot basis, are calculated in multi-shot groups and combined with a rolling-sum to greatly reduce the computational overhead. As a consequence, the disclosed systems and methods can provide target region illuminations more quickly and/or with higher quality than those systems relying on conventional 3D wave-equation illumination.

摘要翻译： 在各种公开的地震成像系统和方法中，采用快速目标定向照明计算技术来获得近似照明值的数据量或“矩阵”。 这些照明值使得能够找到“真实反射率”值的图像矩阵。 照明值来源于格林函数，而不是按照逐帧计算和重新计算，而是以多组为单位计算，并与滚动和相结合，大大减少了计算开销。 因此，所公开的系统和方法可以比依赖于常规3D波动方程照明的系统更快速和/或更高质量地提供目标区域照明。

公开(公告)号：US20120203523A1

公开(公告)日：2012-08-09

申请号：US13367189

申请日：2012-02-06

申请人： Lijian Tan ,  Mingqiu Luo

发明人： Lijian Tan ,  Mingqiu Luo

IPC分类号： G06F17/10 ,  G06F7/60 ,  G06G7/48

CPC分类号： G01V1/28 ,  G06F9/5044 ,  G06T1/20 ,  G06T15/005 ,  G09G5/363

摘要： A method for seismic modeling on a GPU includes creating a discretized model containing a volume enclosed by boundaries with arbitrary boundary conditions, dividing the discretized model into subsets, transferring a data to the GPU, initializing the data stored in a selected number of the subsets on the GPU, performing computation related with a number of time steps for the selected number of the subsets on the GPU, and substantially simultaneously computing, off-loading a finished subsets data from the GPU, and up-loading a new subsets data to the GPU. The provided method and corresponding system can reduce the amount of data stored in GPU memory by an order of magnitude, minimize the GPU device-to-host transfer bandwidth requirements, and reduce the GPU setup time.

摘要翻译： 一种用于在GPU上进行地震建模的方法包括：创建一个离散模型，该模型包含由具有任意边界条件的边界包围的体积，将离散化模型划分为子集，将数据传输到GPU，将存储在选定数量子集中的数据初始化 GPU执行与GPU上所选数量的子集的多个时间步长相关的计算，并且基本上同时计算从GPU卸载完成的子集数据，并将新的子集数据上载到GPU 。 提供的方法和相应的系统可以将存储在GPU存储器中的数据量减少一个数量级，从而最大限度地减少GPU设备到主机的传输带宽需求，并减少GPU设置时间。

公开(公告)号：US08972234B2

公开(公告)日：2015-03-03

申请号：US13367189

申请日：2012-02-06

申请人： Lijian Tan ,  Mingqiu Luo

发明人： Lijian Tan ,  Mingqiu Luo

IPC分类号： G06G7/48 ,  G01V1/28 ,  G06F9/50 ,  G06T1/20 ,  G09G5/36 ,  G06T15/00

CPC分类号： G01V1/28 ,  G06F9/5044 ,  G06T1/20 ,  G06T15/005 ,  G09G5/363

摘要： A method for seismic modeling on a GPU includes creating a discretized model containing a volume enclosed by boundaries with arbitrary boundary conditions, dividing the discretized model into subsets, transferring a data to the GPU, initializing the data stored in a selected number of the subsets on the GPU, performing computation related with a number of time steps for the selected number of the subsets on the GPU, and substantially simultaneously computing, off-loading a finished subsets data from the GPU, and up-loading a new subsets data to the GPU. The provided method and corresponding system can reduce the amount of data stored in GPU memory by an order of magnitude, minimize the GPU device-to-host transfer bandwidth requirements, and reduce the GPU setup time.

摘要翻译： 一种用于在GPU上进行地震建模的方法包括：创建一个离散模型，该模型包含由具有任意边界条件的边界包围的体积，将离散化模型划分为子集，将数据传输到GPU，将存储在选定数量子集中的数据初始化 GPU执行与GPU上所选数量的子集的多个时间步长相关的计算，并且基本上同时计算从GPU卸载完成的子集数据，并将新的子集数据上载到GPU 。 提供的方法和相应的系统可以将存储在GPU存储器中的数据量减少一个数量级，从而最大限度地减少GPU设备到主机的传输带宽需求，并减少GPU设置时间。