公开(公告)号：US20170269247A1

公开(公告)日：2017-09-21

申请号：US15610980

申请日：2017-06-01

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE ,  Simon KING

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V1/38 ,  G01V2210/56

Abstract: Methods and systems for processing data acquired using a variable-depth streamer, obtain up-going and down-going wavefields at a predetermined datum, and use them to identify multiples included in the up-going wavefield. An image of a geological formation under the seabed is then generated using the data from which the multiples have been removed, and/or the multiples.

公开(公告)号：US20170248721A1

公开(公告)日：2017-08-31

申请号：US15507986

申请日：2015-09-09

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE ,  Simon KING

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/366 ,  G01V1/36 ,  G01V1/364 ,  G01V1/38 ,  G01V2210/56 ,  G01V2210/57

Abstract: Computing device, computer instructions and method for processing energy at a free-surface reflection relating to an air-water interface. The method includes receiving input seismic data recorded with seismic sensors; receiving wave-height data that describes an actual shape of a top surface of a body of water; processing up-going energy at a receiver and down-going energy following a reflection at the sea-surface, using the input seismic data and a linear operator modified to take into account the wave-height data; and generating an image of the subsurface based on the up-going energy or the down-going energy or a combination of the input seismic data and one of the up-going or down-going energy.