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System and method for seismic wavefield separation

  • US 6,836,448 B2
  • Filed: 07/09/2002
  • Issued: 12/28/2004
  • Est. Priority Date: 01/21/2000
  • Status: Expired due to Term
First Claim
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1. A method of creating a filter for use with locally dense seismic data comprising the steps of:

  • obtaining survey geometry characteristics from a locally dense seismic survey designed to record characteristics of an elastic or acoustic wavefield, the survey comprising a plurality of groups of receivers, and each group comprising at least three receivers densely spaced from each other;

    designing a filter which uses spatial derivatives of the wavefield of order between or including one and the maximum order of spatial derivatives of the wavefield that can be estimated within a group, such that the filter when combining data from within a single group, separates components of some or all of the wavefield arriving at the single group.

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