VSP Imaging

DAS modeling/migration

We modeled DAS data over a 2D model.
Well orientation is a worst-case scenario for DAS
DAS is geared to (acoustic) signal propagating along the well.
Here, shots are normal to the well

The modeled data were then imaged using Panorama's proprietary VSP algorithm. The response of the DAS sensors is also modeled internally, to preserve as much as possible the true amplitude.

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Migration of DAS VSP (well in red) treated as pressure

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Migration of DAS VSP (well in red) with proper modeling of DAS response

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Model; pure horizontal well (in red).

Synthetic receiver-gathers; Pressure (left) vs DAS, showing angle dependence