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Kees Wapenaar1, Myrna Staring1

  • 1Department of Geoscience and Engineering Delft University of Technology Delft Netherlands.

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Summary
This summary is machine-generated.

This study presents an efficient seismic monitoring method. It quickly updates reflection responses for changing subsurface target zones, saving significant computational resources.

Keywords:
multiplesrepresentationsseismictime‐lapse

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Area of Science:

  • Geophysics
  • Seismic Imaging
  • Earth Sciences

Background:

  • Seismic monitoring typically involves analyzing a dynamic target zone within a stable, complex geological medium.
  • Predicting surface reflection responses for various target zone configurations is crucial for effective subsurface analysis.

Purpose of the Study:

  • To develop an efficient method for predicting seismic reflection responses for evolving target zones.
  • To reduce computational costs associated with repeated seismic modeling in monitoring scenarios.

Main Methods:

  • The Marchenko method is employed to isolate the original target zone's contribution from the overall reflection response.
  • A novel approach models and inserts the response of a new target zone, accounting for multiple scattering and wave conversion.

Main Results:

  • The method successfully predicts reflection responses for different target zone scenarios using a single initial response.
  • Efficiency is significantly enhanced as only the target zone modeling needs repetition, not the entire seismic response.

Conclusions:

  • This technique offers a computationally efficient solution for seismic monitoring of changing subsurface targets.
  • The approach is valuable for time-lapse seismic studies and reservoir monitoring where target zones evolve.