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Abstract

Summary

In order to understand many of the phenomena observed in exploration seismic data, such as dispersion, absorption, or resonance effects, one needs to be able to faithfully model wave propagation in complex geological sequences of poroelastic rocks. In developing such a capability, we are interested in modelling wave transmission through individual poroelastic media, and especially interested in modelling the nature of the reflection events, those that are recorded in exploration data. Thus we are developing modelling tools for wave propagation in fluid-saturated poroelastic media using both semi-analytical and numerical approaches. We discuss the equations governing wave propagation in poroelastic media, as well as details of the semi-analytical and the numerical (finite-difference) approaches to solution of such problems. We then present examples for a few geological models using both methods. The geological models are made up of a water layer overlying a number of rock layers, in general, poroelastic media, some with open porosity, some with closed porosity. We observe significant differences for different geological models which may prove useful in detecting various lithological and fluid properties.

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/content/papers/10.3997/2214-4609.201601521
2016-05-30
2024-04-26

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201601521
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Comparison of Elastic vs Poroelastic and Semi-analytical vs Finite-difference Seismic Modelling
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201601521
/content/papers/10.3997/2214-4609.201601521
/content/papers/10.3997/2214-4609.201601521
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