公开(公告)号：US20170031041A1

公开(公告)日：2017-02-02

申请号：US15303617

申请日：2015-10-22

Applicant: CGG SERVICES SA

Inventor： Andrew RATCLIFFE ,  Graham CONROY

IPC: G01V1/28 ,  G01V99/00 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/303 ,  G01V1/307 ,  G01V99/005 ,  G01V2210/614 ,  G01V2210/6222

Abstract: Recorded seismic data are obtained at a plurality of receivers from a plurality of sources, and a set of sources from the plurality of sources is selected using spatial criteria based on a location of each source such that any two sources in the set of sources are separated by a predefined minimum distance of separation sufficient to reduce cross talk between sources. The set of sources is combined in a non-encoded manner into a composite source, and forward modeling for the composite source is performed to generate a synthetic seismic data set. A composite recorded seismic data set for the set of sources is determined, and the synthetic seismic data set and composite recorded seismic data set are used to determine a residual seismic data set. Backward modeling generates a gradient update used to generate an updated earth model.

Abstract translation: 从多个源在多个接收机处获得记录的地震数据，并且使用基于每个源的位置的空间标准来选择来自多个源的源的集合，使得该组源中的任何两个源被分离 通过预定的最小分离距离足以减少源之间的串扰。 源集合以非编码方式组合成复合源，并执行复合源的正向建模以生成合成地震数据集。 确定用于该组源的复合记录地震数据集，并且使用合成地震数据集和复合记录地震数据集来确定残余地震数据集。 向后建模生成用于生成更新的地球模型的梯度更新。

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：US20160187506A1

公开(公告)日：2016-06-30

申请号：US14908759

申请日：2015-04-13

Applicant: CGG SERVICES SA

Inventor： Andrew RATCLIFFE ,  Graham CONROY

IPC: G01V1/28

CPC classification number: G01V1/282 ,  G01V1/303 ,  G01V2210/614 ,  G01V2210/67 ,  G01V2210/679

Abstract: Iterative inversion of composite source data obtains recorded seismic data at a plurality of receivers from a plurality of sources. A selected orthogonal function is applied to a set of sources selected from the plurality of sources to identify candidate sources in the set of sources to receive a time shift. A time shift is applied only to the candidate sources, and all sources in the set of sources are combined into a composite source. A current earth model performs forward modeling for the composite source to generate a synthetic seismic data set. A composite recorded seismic data set associated with the set of sources at the receivers is determined and is used with the synthetic seismic data set to determine a residual seismic data set. The current earth model performs a gradient update that is used to update the current earth model and generate an updated earth model.

Abstract translation: 复合源数据的迭代反演从多个源获得多个接收机的记录地震数据。 选择的正交函数被应用于从多个源中选择的一组源，以识别该组源中的候选源以接收时移。 时移只适用于候选源，源集合中的所有源组合成一个复合源。 当前的地球模型对复合源进行正向建模，以生成合成地震数据集。 确定与接收器处的源组相关联的复合记录地震数据集，并与合成地震数据组一起使用以确定残余地震数据集。 当前的地球模型执行梯度更新，用于更新当前的地球模型并生成更新的地球模型。

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。