公开(公告)号：US20170075009A1

公开(公告)日：2017-03-16

申请号：US15311654

申请日：2015-06-01

Applicant: CGG SERVICES SAS

Inventor： Adel KHALIL ,  Henning HOEBER ,  Bernard DESCHIZEAUX

IPC: G01V1/36

Abstract: A method for spectral analysis of seismic data obtains imaged seismic data and generates orthogonally shifted imaged seismic data gathers. The orthogonally shifted imaged seismic data gathers are processed to generate a spectrally processed imaged seismic data. Alternatively, the imaged seismic data are obtained using a spectral processing filter that is a function of a magnitude of a total wavenumber of the imaged seismic data in three dimensions and a spatially variable velocity function.

Abstract translation: 地震数据的频谱分析方法可获得成像的地震资料，并生成正交移位的成像地震数据采集。 对正交移位的成像地震数据采集进行处理，以产生经过频谱处理的成像地震数据。 或者，使用作为三维成像地震数据的总波数的大小的函数的频谱处理滤波器和空间可变速度函数来获得成像的地震数据。

公开(公告)号：US20210080604A1

公开(公告)日：2021-03-18

申请号：US16633787

申请日：2018-08-29

Applicant: CGG SERVICES SAS

Inventor： Bernard DESCHIZEAUX ,  Vetle VINJE ,  Carl-Inge NILSEN

IPC: G01V1/28

Abstract: A method for correcting physical positions of seismic sensors and/or seismic sources for a seismic data acquisition system. The method includes estimating a respective energy generated by each source element, which belongs to a source array; calculating a respective energy recorded by each individual seismic sensor, which belongs to a composite receiver; summing, for each individual seismic sensor, all the generated energies from the all the source elements; estimating a model of direct arrival waves that propagate from the source elements to the individual seismic sensors; calculating positions of the individual seismic sensors based on the model of direct arrival waves; comparing calculated positions of the individual seismic sensors with observed positions of the individual seismic sensors; selecting a best calculated position for each of the individual seismic sensors based on an objective function; and correcting the observed positions of the individual seismic sensors with corresponding best calculated positions.