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High fidelity vibratory source seismic method for use in vertical seismic profile data gathering with a plurality of vibratory seismic energy sources

  • US 5,790,473 A
  • Filed: 11/13/1995
  • Issued: 08/04/1998
  • Est. Priority Date: 11/13/1995
  • Status: Expired due to Term
First Claim
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1. A method for processing high resolution vibratory source vertical seismic profile data comprising:

  • positioning a receiver at one location in a wellbore;

    receiving electrical signals representing seismic information generated by multiple vibrators;

    receiving measured signals representing transmitted seismic waves from each of said multiple vibrators;

    separating said electrical signals corresponding to each of said multiple vibrators;

    dividing said separated electrical signals with said measured signals to obtain earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function to obtain a minimum phase data set;

    filtering said minimum phase data set with a minimum phase band pass filter; and

    performing minimum phase deconvolution on said minimum phase data set to obtain earth reflectivity.

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