公开(公告)号：US20180267189A1

公开(公告)日：2018-09-20

申请号：US15542718

申请日：2015-12-18

Applicant: CGG SERVICES SA

Inventor： Ross HAACKE ,  Robert ZIETAL

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/362 ,  G01V1/38 ,  G01V2210/47 ,  G01V2210/532 ,  G01V2210/58

Abstract: Effects of time variability of water velocities in seismic surveys are addressed. Traveltime discontinuities in the input seismic data which are associated with the time-variable water velocities are determined. The input seismic data is transformed from a data space that contains the traveltime discontinuities into a model space which does not contain the traveltime discontinuities. Then the transformed seismic data is reverse transformed from the model space back into the data space.