1887

Abstract

The repeatability of time-lapse seismic data depends upon the repeatability of the acquisition geometry. Despite the availability of high precision navigation systems and steerable streamers, matching seismic survey geometries can require spatial over-sampling and/or wavefield interpolation. Horizontal gradients of the pressure wavefield could greatly alleviate the cross-line sampling issue by doubling the cross-line wavenumber. This paper explores the benefit of using gradients in the reconstruction of pressure wavefields and finds that the reconstruction errors up to twice the pressure-only Nyquist frequency are well within acceptable time-lapse bounds. The use of a multi-channel interpolation by matching pursuit algorithm, in particular, offers good promise for higher order de-aliasing beyond twice-Nyquist.

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/content/papers/10.3997/2214-4609.20149256
2011-05-23
2024-03-28
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20149256
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