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Abstract

Summary

One of the major objectives for 4D seismic studies is to quantify pressure and saturation changes in the reservoir. A key ingredient of this interpretation is the petroelastic model (PEM), which links fluid saturations and pore pressure changes to the elastic property changes required for seismic modelling, time-lapse feasibility studies, 4D inversion and also seismic history matching. In this work we study the use of four different deterministic PEMs for simulator to seismic modelling. The models are calibrated to field data from a UKCS and Norwegian Sea with distinctly different geological settings. We find that there is no best choice of PEM, any may suffice, and that the number of input parameters for each is unnecessarily high. An alternate model for simulator to seismic modelling is suggested which uses only two parameters without loss of accuracy when predicting the mapped seismic response.

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/content/papers/10.3997/2214-4609.201601319
2016-05-30
2024-03-29
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References

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