River crossing, marine seismic refraction and UMASW in dynamic mode

GEOTEC
River crossing, marine seismic refraction and UMASW in dynamic mode

In order to secure the crossing of a pipeline across the river and carried out by means of horizontal directed drilling, an aquatic refraction and surface wave seismic campaign was carried out. Parallel profiles with a high acquisition density made it possible to create a 3-dimensional database and thus extract information along the route of the horizontal directional drilling.
Depth investigation between 10 and 20 meters
About 8 km of measurements in dynamic mode has been acquired

Offshore seismic refraction (MSR)
Offshore seismic surface wave (UMASW).
Dynamic approach (equipment dragged on the seabed)
Pipeline route
Horizontal Directional Drilling (HDD)