Acoustic wavefield separation using horizontal receiver arrays deployed at multiple depths on land

Journal article (2013)
Department
Geoscience & Engineering (CEG) (TU Delft)
Copyright: © 2013 SEG
DOI: https://doi.org/doi:10.1190/segam2013-0410.1
Seismic Separation Decomposition Land Downhole receivers
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Published Date

01-10-2013

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Source:

SEG Technical Program Expanded Abstracts 2013

ISSN:

1052-3812

Faculty

Civil Engineering and Geosciences

Department

Geoscience & Engineering

Abstract

We present a novel inversion scheme for decomposing upgoing and downgoing wavefields from vertical particle velocity recordings in downhole arrays at multiple depth levels. Our method requires no knowledge of the subsurface medium parameters as the required operators are obtained directly from the data by direct-wave interferometry. As we demonstrate, the method can be applied with as few as two receiver arrays, as long as their vertical spacing is sufficiently small. Additional depth levels can be used to improve the stability of the inversion.