Full text loading...
-
A New Solution to Eliminate Free Surface Related Multiples in Multicomponent Streamer Recordings
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
We present a new method for the elimination of free surface related multiples in marine seismic data. The method can be applied to datasets that contain both pressure and vertical component of particle velocity recordings. It is based on using a time domain finite difference propagator to generate equivalent data that would be recorded if the free surface above the source and receiver level were replaced by a halfspace with the properties of the water layer, so that all upgoing events radiate outwards instead of being reflected by the sea surface. The interaction with the unknown subsurface geology is taken into account through the use of exact boundary conditions along the acquisition level where we use the recorded data as Green’s functions.