公开(公告)号：US20150198730A1

公开(公告)日：2015-07-16

申请号：US14550112

申请日：2014-11-21

Applicant: CGG SERVICES SA

Inventor： Graham ROBERTS

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V1/38 ,  G01V2210/51 ,  G01V2210/56

Abstract: Methods and systems for ghost compensation of seismic data in conjunction with Kirchhoff migration are described. Input traces are deghosted by applying a deghost operator thereto across a range of ray parameters, which ray parameters are associated with the Kirchhoff migration. The deghosted traces are buffered and then selected for use in the mapping stage of Kirchhoff migration.

Abstract translation: 描述了与Kirchhoff迁移结合地震数据重影补偿的方法和系统。 通过在一定范围的射线参数上施加一个deghost算子来使输入轨迹消失，该射线参数与Kirchhoff迁移相关联。 消除重影的迹线被缓冲，然后选择用于Kirchhoff迁移的映射阶段。

公开(公告)号：US20170123090A1

公开(公告)日：2017-05-04

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 ,  G01V1/36 ,  G01V1/32

CPC classification number: G01V1/345 ,  G01V1/282 ,  G01V1/301 ,  G01V1/325 ,  G01V1/362 ,  G01V1/364 ,  G01V2210/51 ,  G01V2210/512

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：US20160146961A1

公开(公告)日：2016-05-26

申请号：US14947111

申请日：2015-11-20

Applicant: CGG SERVICES SA

Inventor： Andrew RATCLIFFE ,  Graham ROBERTS ,  Lian DUAN

IPC: G01V1/34 ,  G06F17/50 ,  G01V1/36

CPC classification number: G06F17/5009 ,  G01V1/282 ,  G01V1/286 ,  G01V1/306 ,  G01V2210/512 ,  G01V2210/614 ,  G01V2210/6224 ,  G01V2210/6226 ,  G01V2210/675 ,  G01V2210/679

Abstract: An Earth model of a subsurface is created from acquired seismic data by migrating at least one of the incident wavefields and reflected wavefields to generate angle gathers for the seismic data and identifying for the subsurface an elastic Earth model equation for the incident wavefields and the reflected wavefields in the acquired seismic data. The elastic Earth model is a function of reflection angle between the incident wavefields and reflected wavefields and elastic parameters and is fit to the generated angle gathers through perturbation in the elastic parameters. The generated perturbations are used to create the Earth model of the subsurface.

Abstract translation: 通过迁移至少一个入射波场和反射波场，从获取的地震数据中产生地下地球模型，以产生地震数据的角度集合，并为地下识别入射波场和反射波场的弹性地球模型方程 在获取的地震资料中。 弹性地球模型是入射波场与反射波场之间的反射角和弹性参数的函数，并且通过扰动在弹性参数中适应于产生的角度集合。 所产生的扰动用于创建地下地球模型。