Full text loading...
-
Deblending of Large 3D Surveys Acquired with Triple Sources in NW Europe
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
By increasing the number of sources, the crossline spacing is decreased for a given cable spacing, making it possible to efficiently acquire high resolution seismic data. To maintain CMP fold the shot spacing is reduced, leading to overlapping of the seismic sources within the desired record length. Separation of overlapping sources is therefore required prior to further processing. During 2017 TGS acquired ∼50,000 km2 of blended seismic data offshore NW Europe. Careful testing was carried out to design the deblending methodology, with the location of the data being a significant factor in the selection of the final workflow for each survey. The final results show good separation of sources and a close correlation to underlying nonblended surveys.