公开(公告)号：US20190331814A1

公开(公告)日：2019-10-31

申请号：US16509009

申请日：2019-07-11

Applicant: PGS Geophysical AS

Inventor： Grunde Rønholt ,  Nizar Chemingui ,  Alejandro Antonio Valenciano Mavilio ,  Shaoping Lu

IPC: G01V1/30 ,  G01V1/28 ,  G01V1/36

Abstract: Amplitude-versus-angle analysis for quantitative interpretation can include creation of a plurality of angle gathers from imaging a subsurface location with multiples in a near-offset range and imaging primaries outside the near-offset range and application of an amplitude-versus-angle analysis to the plurality of angle gathers to produce a quantitative interpretation pertaining to the subsurface location.

公开(公告)号：US20170059730A1

公开(公告)日：2017-03-02

申请号：US15238460

申请日：2016-08-16

Applicant: PGS Geophysical AS

Inventor： Shaoping Lu ,  Norman Daniel Whitmore, JR. ,  Alejandro Antonio Valenciano Mavilio ,  Nizar Chemingui

IPC: G01V1/36 ,  G01V1/32 ,  G01V1/38

CPC classification number: G01V1/36 ,  G01V1/32 ,  G01V1/364 ,  G01V1/38 ,  G01V2210/1423 ,  G01V2210/144 ,  G01V2210/24 ,  G01V2210/44 ,  G01V2210/45 ,  G01V2210/56 ,  G01V2210/57

Abstract: Methods and systems of generating seismic images from primaries and multiples are described. Methods separate pressure data into up-going pressure data and down-going pressure data from pressure data and vertical velocity data. Irregularly spaced receiver coordinates of the down-going and up-going pressure data are regularized to grid points of a migration grid and interpolation is used to fill in down-going and up-going pressure data at grid points of the migration grid. A seismic image is calculated at grid points of the migration grid based on the interpolated and regularized down-going pressure data and the interpolated and regularized up-going pressure data. The seismic images are high-resolution, have lower signal-to-noise ratio than seismic images generated by other methods, and have reduced acquisition artifacts and crosstalk effects.

Abstract translation: 描述了从原始和倍数生成地震图像的方法和系统。 可以将压力数据从压力数据和垂直速度数据中分离为上次压力数据和下行压力数据。 下行和上行压力数据的不规则间隔的接收器坐标正规化到移动网格的网格点，并且内插用于填充移动网格的网格点处的下行和上行的压力数据。 基于内插和正则化的下行压力数据和内插和正则化的上行压力数据，在移动网格的网格点处计算地震图像。 地震图像是高分辨率的，具有比其他方法产生的地震图像更低的信噪比，并且减少了采集伪影和串扰效应。

公开(公告)号：US20160238726A1

公开(公告)日：2016-08-18

申请号：US14991416

申请日：2016-01-08

Applicant: PGS Geophysical AS

Inventor： Shaoping Lu ,  Norman Daniel Whitmore, JR. ,  Alejandro Antonio Valenciano Mavilio

IPC: G01V1/36 ,  G01V1/32 ,  G01V1/34

CPC classification number: G01V1/36 ,  G01V1/32 ,  G01V1/345 ,  G01V1/38 ,  G01V2210/51 ,  G01V2210/56

Abstract: Crosstalk attenuation for seismic imaging can include creation of a seismic image based on seismic data including multiples. The seismic image can include causal crosstalk and anti-causal crosstalk. Causal crosstalk and anti-causal crosstalk can be predicted based on the seismic data. The predicted causal crosstalk and the predicted anti-causal crosstalk can be attenuated from the seismic image.

Abstract translation: 地震成像的串扰衰减可以包括基于包括多次的地震数据创建地震图像。 地震图像可以包括因果串扰和反因果串扰。 可以基于地震数据预测因果串扰和反因果串扰。 预测的因果串扰和预测的反因果串扰可以从地震图像中衰减。