Full text loading...
-
Near-offset Trace Reconstruction from Sparse Ocean Bottom Seismometer Data Using Seismic Interferometry
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
Ocean bottom seismometer data are often acquired using large receiver intervals; for example large cable spacing in cross-line ocean bottom cable data acquisition. In this case, the missing of near-offset traces may result in poor illumination of the shallow subsurface by the primary reflections. However, the surface-related multiple reflections have a better illumination of this region even if the receiver array is sparse. Using a combination of the seismic interferometry and the data-driven FX-interpolation methods, we extrapolated the surface-related multiple wavefield of a dense array of shots and a sparse array of receivers towards a primary wavefield corresponding to dense arrays of both, shots and receivers. We applied our method to a synthetic dataset to reconstruct the near-offset traces and showed that our method provided similar seismic image of shallow structures compared with densely acquired seismic data.