公开(公告)号：US20170184747A1

公开(公告)日：2017-06-29

申请号：US15125257

申请日：2015-03-24

Applicant: CGG SERVICES SA

Inventor： Chang-Chun LEE ,  Yunfeng LI ,  Suryadeep RAY ,  Gordon POOLE

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/36 ,  G01V1/38 ,  G01V2210/1423 ,  G01V2210/1427 ,  G01V2210/20 ,  G01V2210/50 ,  G01V2210/59

Abstract: Methods and apparatuses for directional designature in shot domain are provided. Azimuth and take-off angles are calculated for each record in the seismic data. Directional designature is then applied to the seismic data using a source signature dependent on the azimuth and take-off angles.

公开(公告)号：US20160223698A1

公开(公告)日：2016-08-04

申请号：US14908301

申请日：2015-03-24

Applicant: CGG SERVICES SA

Inventor： Ping WANG ,  Suryadeep RAY ,  Zhigang ZHANG

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V2210/244 ,  G01V2210/324 ,  G01V2210/47

Abstract: An input seismic data set is obtained, and a first inversion is conducted on a first frequency filtered input seismic data set across all slowness values in the plurality of slowness values using an inversion matrix with dipole modulation containing a plurality of Tau-p operators and a plurality of dipole terms to transform the first frequency filtered input seismic data set from a time domain to a Tau-p domain having a plurality of first inversion Tau-p coefficients. Each Tau-p coefficient associated with one of the plurality of slowness values. The first inversion Tau-p coefficients are used to identify a subset of slowness values from the plurality of slowness values, and iterative sparse Tau-p inversion using the identified subset of slowness values is performed. The input seismic data set is modified to generate a noise attenuated seismic data set based on the iterative sparse Tau-p inversion.

Abstract translation: 获得输入地震数据集，并且使用具有包含多个Tau-p算子的偶极调制的反演矩阵，在多个慢度值中的所有慢度值上对第一频率滤波的输入地震数据集进行第一反演，以及 多个偶极项，以将来自时域的第一频率滤波的输入地震数据集转换为具有多个第一反演Tau-p系数的Tau-p域。 与多个慢度值之一相关联的每个Tau-p系数。 第一反演Tau-p系数用于识别来自多个慢度值的慢度值的子集，并且使用识别的慢度值子集执行迭代稀疏Tau-p反演。 基于迭代稀疏Tau-p反演，对输入的地震数据组进行修改，生成噪声衰减的地震数据集。

公开(公告)号：US20160327670A1

公开(公告)日：2016-11-10

申请号：US15109840

申请日：2015-01-08

Applicant: CGG SERVICES SA

Inventor： Ping WANG ,  Suryadeep RAY ,  Kawin NIMSAILA ,  Hongzheng JIN ,  Can PENG

IPC: G01V1/36 ,  G01V1/32 ,  G01V1/38

CPC classification number: G01V1/364 ,  G01V1/325 ,  G01V1/362 ,  G01V1/3808 ,  G01V2210/47 ,  G01V2210/56

Abstract: Computing device, computer instructions and method for improving accuracy of an image of a surveyed subsurface. The method includes a step of receiving seismic data (D) recorded with seismic sensors; a step of deghosting the seismic data (D) using a sparseT-pinversion algorithm together with a low-rank optimization scheme and a high-cut filter to calculate ghost-free wave-fields (U0(t,x,y)) in the time-space domain; and a step of processing the ghost-free wave-fields (U0(t,x,y)) to generate the image of the surveyed subsurface.

Abstract translation: 计算装置，计算机指令和提高受测地下图像精度的方法。 该方法包括接收用地震传感器记录的地震数据（D）的步骤; 使用稀疏T反转算法以及低阶优化方案和高截止滤波器对地震数据（D）进行消影反射的步骤，以计算无重影波场（U0（t，x，y）） 时空域; 以及处理无重影波场（U0（t，x，y））的步骤，以产生被测地下的图像。

公开(公告)号：US20160291185A1

公开(公告)日：2016-10-06

申请号：US14967558

申请日：2015-12-14

Applicant: CGG SERVICES SA

Inventor： Ping WANG ,  Suryadeep RAY

IPC: G01V1/36 ,  G01V1/28 ,  G01V1/32

CPC classification number: G01V1/364 ,  G01V1/282 ,  G01V1/32 ,  G01V1/38 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/47 ,  G01V2210/48 ,  G01V2210/56

Abstract: Computing device, computer instructions and method for jointly deghosting first and second 3-dimensional (3D) seismic vintages of a same subsurface. The method includes receiving the first 3D vintage; receiving the second 3D vintage, wherein the second 3D vintage is taken later in time than the first 3D vintage, over the same subsurface; jointly deghosting the first and second 3D vintages based on a common ghost-free model U0, a first vintage ghost-free model Ub, and a second vintage ghost-free model Um; and generating an image of the subsurface indicative of changes between the first and second 3D vintages based on the common ghost-free model U0.

Abstract translation: 计算设备，计算机指令和方法，用于联合消除同一地下第一和第三立体（3D）地震年份。 该方法包括接收第一个3D复古; 接收第二3D复古，其中第二3D复古在时间上比第一3D复古在同一地下采用; 基于常见的无鬼模型U0，第一复古无鬼模型Ub和第二复古无重影模型Um，共同消除第一和第二3D年份的衰减。 以及基于所述公共无重影模型U0生成指示所述第一和第二3D年份之间的变化的地下图像。

公开(公告)号：US20150355357A1

公开(公告)日：2015-12-10

申请号：US14759960

申请日：2014-01-13

Applicant: CGG SERVICES SA

Inventor： Ping WANG ,  Suryadeep RAY ,  Can PENG ,  Yunfeng LI

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/52 ,  G01V2210/56 ,  G01V2210/671

Abstract: Methods and systems for optimized receiver-based ghost filter generation are described. The optimized ghost filter self-determines its parameters based on an iterative calculation of recorded data transformed from a time-space domain to a Tau-P domain. An initial ghost filter prediction is made based on generating mirror data from the recorded data and using a least squares technique during a premigration stage.

Abstract translation: 描述了用于优化基于接收机的重影滤波器生成的方法和系统。 基于从时空域到Tau-P域的记录数据的迭代计算，优化的重影滤波器自我确定其参数。 基于从记录数据生成镜像数据并在预迁移阶段使用最小二乘法进行初始重滤波器预测。