公开(公告)号：US20170168173A1

公开(公告)日：2017-06-15

申请号：US15115369

申请日：2015-02-04

Applicant: CGG SERVICES SA

Inventor： Julien COTTON ,  Cécile BERRON

IPC: G01V1/00

CPC classification number: G01V1/005

Abstract: A system and method for generating simultaneous plural frequencies in seismic exploration is disclosed. The method includes configuring a seismic source to emit a seismic signal that includes multiple frequencies emitted substantially simultaneously. The method additionally includes identifying a plurality of frequencies to include in the seismic signal and determining an amplitude of the seismic signal. The method further includes obtaining a seismic dataset corresponding to the seismic signal emitted by the seismic source and creating a seismic image of a subsurface of a seismic survey area.

公开(公告)号：US20170068010A1

公开(公告)日：2017-03-09

申请号：US15120366

申请日：2015-02-24

Applicant: CGG SERVICES SA

Inventor： Eric FORGUES ,  Michael BEILLES ,  Cécile BERRON

IPC: G01V1/36 ,  G01V1/00 ,  G01V1/30

CPC classification number: G01V1/364 ,  G01V1/003 ,  G01V1/306 ,  G01V2210/21 ,  G01V2210/322 ,  G01V2210/324

Abstract: The disclosed method includes receiving resulting signals emanating from a subterranean formation, wherein the resulting signals are caused by signals emitted from seismic sources. The method further includes dividing the resulting signals into a plurality of sub-samples. The method includes determining a frequency content of one or more of the sub-samples and assigning a weight to or more components of the frequency content of the sub-sample to produce a weighted frequency content of the sub-sample, wherein the assigned weight is based, at least in part, on an estimate of the amount of noise present in the frequency content of the sub-sample. The method further includes combining the weighted frequency contents of the sub-samples to produce a weighted sample. The method further includes determining one or more properties of the subsurface formation based, at least in part, on the weighted sample.

Abstract translation: 所公开的方法包括接收从地下地层发出的结果信号，其中所得到的信号是由地震源发射的信号引起的。 该方法还包括将得到的信号划分成多个子样本。 该方法包括确定一个或多个子样本的频率内容，并为子样本的频率内容分配权重或者更多的分量，以产生子样本的加权频率内容，其中分配的权重是 至少部分地基于对子样本的频率内容中存在的噪声量的估计。 该方法还包括组合子样本的加权频率内容以产生加权样本。 该方法还包括至少部分地基于加权样本来确定地下地层的一个或多个属性。