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3D pre-stack full waveform inversion

  • US 7,373,252 B2
  • Filed: 11/02/2006
  • Issued: 05/13/2008
  • Est. Priority Date: 11/04/2005
  • Status: Expired due to Fees
First Claim
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1. A method, comprising:

  • generating a macro P-wave velocity model, including resolution of residual moveout errors, using reflection tomography from a seismic data set;

    generating a diffraction response from the macro P-wave velocity model for a given common image gather location therein assuming a locally laterally invariant model;

    converting the generated diffraction response for the given common image gather location to a migrated reflection response to yield a modeled data set;

    comparing the modeled data set to the given common image point from the seismic data set;

    updating the macro P-wave velocity model based on the result of the comparison; and

    iterating the diffraction response generation, the diffraction response conversion, comparison, and update until the modeled data set converges to the common image gathers.

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