公开(公告)号：US10386518B2

公开(公告)日：2019-08-20

申请号：US14682361

申请日：2015-04-09

Applicant: CGG SERVICES SA

Inventor： Chao Peng ,  Bin Liu ,  Adel Khalil ,  Gordon Poole

IPC: G01V1/36

Abstract: A device, medium and method for deblending seismic data associated with a subsurface of the earth. The method includes a step of receiving seismic data S recorded with one or more seismic receivers, wherein the seismic data S includes shot recordings generated by first and second source arrays that are simultaneously actuated; a step of detecting incoherent energy of the seismic data S using a median filter; a step of replacing incoherent parts of the seismic data with a projection filter to obtain deblended data for one of the two or more source arrays; and a step of generating in a computing device an image of the subsurface based on the deblended data.

公开(公告)号：US09207345B2

公开(公告)日：2015-12-08

申请号：US14736675

申请日：2015-06-11

Applicant: CGG SERVICES SA

Inventor： Adel Khalil ,  Gordon Poole ,  Margherita Maraschini

IPC: G01V1/36 ,  G01V1/34

CPC classification number: G01V1/364 ,  G01V1/34 ,  G01V1/36 ,  G01V2210/20 ,  G01V2210/32

Abstract: Methods and devices for seismic data processing deblend seismic data gathered using simultaneous source acquisition by applying two different deblending techniques. The second deblending technique is applied to residual data obtained after applying the first deblending technique. At least one of these first and second deblending techniques uses a signal-to-noise map.

Abstract translation: 地震数据处理的方法和装置通过应用两种不同的去掉技术，利用同时源采集来收集地震数据。 第二次去除技术被应用于在应用第一次去除技术之后获得的剩余数据。 这些第一和第二去除技术中的至少一个使用信噪比映射。

公开(公告)号：US10324207B2

公开(公告)日：2019-06-18

申请号：US15337561

申请日：2016-10-28

Applicant: CGG SERVICES SA

Inventor： Adel Khalil ,  Henning Hoeber ,  Jeshurun Hembd ,  Adriano Gomes ,  Gordon Poole ,  Francesco Perrone ,  Lorenzo Casasanta ,  Graham Roberts ,  Andrew Ratcliffe

IPC: G01V1/34 ,  G01V1/28 ,  G01V1/36 ,  G01V1/32 ,  G01V1/30

Abstract: Computing device, computer instructions and method for calculating an image of a subsurface based on least square migration and image de-convolution using a matching operator F. The method includes receiving seismic data d; computing a first image m of the subsurface based on the seismic data d; computing a second image h of the subsurface based on the first image m; applying a transform operation to the first and second images m and h to obtain a first transform of the first image and a second transform of the second image; calculating the matching operator F by matching the first transform of the first image to the second transform of the second image; and generating an updated image mupdated of the subsurface based on the matching operator F and the first transform of the first image.

公开(公告)号：US09575194B2

公开(公告)日：2017-02-21

申请号：US14278039

申请日：2014-05-15

Applicant: CGG Services SA

Inventor： Adel Khalil ,  James Sun ,  Yu Zhang ,  Gordon Poole

IPC: G01V1/28

CPC classification number: G01V1/282 ,  G01V2210/51 ,  G01V2210/679

Abstract: A method for processing seismic data includes receiving seismic data and a velocity model (c(x)) for a plurality of locations (x), scaling a dimension of the seismic data according to the velocity model (c(x)) to provide a velocity normalized seismic data, and generating a final image (S(x)) of the subsurface using the velocity normalized seismic data. The velocity normalized seismic data may be a reverse-time migration image (I(x,ξ)) corresponding to the plurality of locations (x) and a plurality of propagation distance offsets (ξ). The method may also include transforming the reverse-time migration image (I(x,ξ)) for the plurality of selected positions (x) to a wavenumber domain to provide velocity normalized wavenumber data (I(k,ψ)) and suppressing data components corresponding to non-physical or undefined reflection angles to provide enhanced wavenumber data (I′(k,ψ)) and using the enhanced wavenumber data (I′(k,ψ)) to generate the final image (S(x)). A corresponding apparatus is also disclosed herein.

Abstract translation: 一种用于处理地震数据的方法包括：对于多个位置（x）接收地震数据和速度模型（c（x）），根据速度模型（c（x））缩放地震数据的尺寸，以提供 速度归一化地震数据，并使用速度归一化地震数据生成地下的最终图像（S（x））。 速度归一化地震数据可以是对应于多个位置（x）的反向时间偏移图像（I（x，ξ））和多个传播距离偏移（ξ）。 该方法还可以包括将多个选定位置（x）的反向时间偏移图像（I（x，ξ））变换为波数域，以提供速度归一化波数数据（I（k，ψ））并抑制数据 对应于非物理或未定义的反射角的分量，以提供增强的波数数据（I'（k，ψ）），并使用增强波数数据（I'（k，ψ））来生成最终图像（S（x）） 。 本文还公开了相应的装置。

公开(公告)号：US20140328140A1

公开(公告)日：2014-11-06

申请号：US14278039

申请日：2014-05-15

Applicant: CGG Services SA

Inventor： Adel Khalil ,  James Sun ,  Zhang Yu ,  Gordon Poole

IPC: G01V1/28

CPC classification number: G01V1/282 ,  G01V2210/51 ,  G01V2210/679

Abstract: A method for processing seismic data includes receiving seismic data and a velocity model (c(x)) for a plurality of locations (x), scaling a dimension of the seismic data according to the velocity model (c(x)) to provide a velocity normalized seismic data, and generating a final image (S(x)) of the subsurface using the velocity normalized seismic data. The velocity normalized seismic data may be a reverse-time migration image (I(x,ξ)) corresponding to the plurality of locations (x) and a plurality of propagation distance offsets (ξ). The method may also include transforming the reverse-time migration image (I(x,ξ)) for the plurality of selected positions (x) to a wavenumber domain to provide velocity normalized wavenumber data (I(k,ψ)) and suppressing data components corresponding to non-physical or undefined reflection angles to provide enhanced wavenumber data (I′(k,ψ)) and using the enhanced wavenumber data (I′(k,ψ)) to generate the final image (S(x)). A corresponding apparatus is also disclosed herein.

Abstract translation: 一种用于处理地震数据的方法包括：对于多个位置（x）接收地震数据和速度模型（c（x）），根据速度模型（c（x））缩放地震数据的尺寸，以提供 速度归一化地震数据，并使用速度归一化地震数据生成地下的最终图像（S（x））。 速度归一化地震数据可以是对应于多个位置（x）的反向时间偏移图像（I（x，＆xgr;））和多个传播距离偏移（＆xgr））。 该方法还可以包括将多个选定位置（x）的反向时间偏移图像（I（x，＆xgr;））变换为波数域，以提供速度归一化波数数据（I（k，ψ））并抑制 对应于非物理或未定义的反射角的数据分量以提供增强的波数数据（I'（k，ψ）），并使用增强的波数数据（I'（k，ψ））来生成最终图像（S（x） ）。 本文还公开了相应的装置。

公开(公告)号：US11112518B2

公开(公告)日：2021-09-07

申请号：US14967679

申请日：2015-12-14

Applicant: CGG SERVICES SA

Inventor： Gordon Poole ,  Henning Hoeber ,  Adel Khalil

IPC: G01V1/36 ,  G01V1/32 ,  G01V1/28

Abstract: A non-blended dataset related to a same surveyed area as a blended dataset is used to deblend the blended dataset. The non-blended dataset may be used to calculate a model dataset emulating the blended dataset, or may be transformed in a model domain and used to derive sparseness weights, model domain masking, scaling or shaping functions used to deblend the blended dataset.

公开(公告)号：US10330809B2

公开(公告)日：2019-06-25

申请号：US14888168

申请日：2014-04-30

Applicant: CGG Services SA

Inventor： Henning Hoeber ,  Adel Khalil ,  Erik Hicks

IPC: G01V1/38 ,  G01V1/36 ,  G01V1/28 ,  G01J1/36 ,  G01V1/30

Abstract: A method and apparatus for noise attenuation. The method includes receiving seismic data associated with at least two vintages (di, dj) collected for a same subsurface, wherein the first and second vintages (di, dj) are taken at different times; calculating a set of filters (fi, fj) that minimizes an energy function (E), wherein the energy function (E) includes a term representing a 4D difference between the first and second vintages (di, dj); calculating primaries (pi, pj) corresponding to the first and second vintages (di, dj) based on the set of (fi, fj); and calculating a 4D difference (Δij) based on the primaries (pi, pj). The 4D difference (Δij) is minimized.