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Book Chapter

On the fundamentals of the virtual source method

By
Valeri Korneev
Valeri Korneev
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720. E-mail: vakorneev@lbl.gov.
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Andrey Bakulin
Andrey Bakulin
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720. E-mail: vakorneev@lbl.gov.
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Published:
January 01, 2008

Abstract

The virtual source method (VSM) has been proposed as a practical approach to reduce distortions of seismic images caused by shallow, heterogeneous overburden. VSM is demanding at the acquisition stage because it requires placing downhole geophones below the most complex part of the heterogeneous overburden. Where such acquisition is possible, however, it pays off later at the processing stage because it does not require knowledge of the velocity model above the downhole receivers. This paper demonstrates that VSM can be viewed as an application of the Kirchhoff-Helmholtz integral (KHI) with an experimentally measured Green’s function. Direct measurement of the Green’s function ensures the effectiveness of the method in highly heterogeneous subsurface conditions.

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Contents

Society of Exploration Geophysicists Geophysics Reprint Series

Seismic Interferometry: History and Present Status

Kees Wapenaar
Kees Wapenaar
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Deyan Draganov
Deyan Draganov
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Johan O.A. Robertsson
Johan O.A. Robertsson
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Society of Exploration Geophysicists
Volume
26
ISBN electronic:
9781560801924
Publication date:
January 01, 2008

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