1887

Abstract

Summary

A seismic survey has up to five dimensions: the 3D cubes with inline, crossline and 2-way time (TWT) dimensions as well as offset and azimuth. With repeated measurements (4D seismic), there is an additional axis: the elapsed time. Time-lapse seismic data can then be seen as a six-dimensional volume or a 5D movie.

In traditional pre-stack studies, amplitude is analyzed as a function of incidence angle (AVA) and/or azimuthal direction (AVAz). In this paper, we propose a tool to extend the analysis of the Amplitude Versus Offset (AVO) behavior in conjunction with the elapsed time dimension. The changes in AVO with elapsed time provides a data reduction, that can lead to a clean 4D response of the changes observed through the monitoring period. Its applications to various processing and interpretation processes are discussed in the paper.

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/content/papers/10.3997/2214-4609.201901584
2019-06-03
2024-03-29
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References

  1. MichouL., ColeouT., LafetY.
    , (2013) 4D Seismic Inversion on Continuous Land Seismic Reservoir Monitoring of Thermal EOR, 75th EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  2. ColeouT., CoulonJ-P., CarottiD., DepreP., RobinsonG., HudgensE.
    , (2013) AVO QC during processing, 75th EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
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