LAYERED MEDIA

During the collaboration with the University of Stavenger for the Low Frequency Project, we perform different set of simulations in layered geometries composed by fluid, elastic, porous or visco-elastic media.

The aim is to provide highly  accurate simulations for academical configurations in order to improve the methods used in seismic hydrocarbon detection.

In the following example, the difficulty consist in the detection of the thick porous sanstone layer and its properties, using the informations recorded at the receivers located below in the water.

Half of the domain in taken into account in the simulations. Explosive source is located in the water. First two figures represent the waves at two differetn times. Third figure correspond to a simulation where the top interface of the thin layer is sinusoidal instead of planar. Recorded signal in the water at a recever situtated in the water reveals clearly the difference of the interface geometry. 

 

 

More complex geometries can be introduced easily in the computational domain. The buble inside the porous media is filled by a fluid.