Large scale geological and geotechnical characterisation for a gas refinery

Pilot studies for heavy and sensible infrastructures often require a large number of geotechnical investigations with boreholes. A combined refraction seismic / MASW survey was performed in Qatar in a petroleum context, which required special security measures.

Located in the middle of a semi-desert environment, this campaign involved a crew  of geophysicists, topographers and local workers for two months.

The resulting seismic velocities allowed the calculation of sections and slices of different mechanical parameters. Therefore, positioning of geotechnical tests was optimized.

The use of parallel profiles and an appropriate processing allows the generation of VS sections at a specified depth.