Blended acquisition with temporally signatured/modulated and spatially dispersed source array

Conference paper (2019)

Authors

Tomohide Ishiyama ADNOC Research and Innovation Center
Mohammed Ali Khalifa University of Science and Technology
G. Blacquière Applied Geophysics and Petrophysics - CEG
S. Nakayama Applied Geophysics and Petrophysics - CEG
Research Group
Applied Geophysics and Petrophysics (CEG) (TU Delft)
Copyright: © 2019 Tomohide Ishiyama, Mohammed Ali, G. Blacquière, S. Nakayama
DOI: https://doi.org/10.1190/segam2019-3214624.1
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Published Date

2019

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Applied Geophysics and Petrophysics

Abstract

We introduce a blended-acquisition method: temporally signatured and/or modulated and spatially dispersed source array, namely S-/M-DSA. The former S-DSA has much less constraints in the encoding with operational flexibility, allowing non-uniform sampling and non-patterned shooting both in the space and time dimension. The latter M-DSA allows indeed straightforward deblending by filtering and physically separating frequency channels in the frequency domain. We evaluated the deblending performance for several scenarios of blended acquisition. The results showed that: S-DSA attains the best acquisition productivity; M-DSA attains the best deblending performance, compared to other methods. Our S-/M-DSA method makes the blended-acquisition encoding and operations significantly simple and robust; the same is true for the deblending processing.