BIS-SH-DS S-Wave Source

The borehole source BIS-SH-DS generates horizontally polarized shear waves (SH) and compressional waves (P). The seismic signals are highly repeatable. The source works in dry or water-filled boreholes and can be used in vertical or horizontal boreholes. The energy released by the IPG800 discharges through a system of coupled coils. They generate a mechanical impact on the borehole wall that releases seismic waves.
The borehole source is coupled to the borehole wall by a pneumatic clamping system (inflatable bladder). The orientation of the source is controlled from the surface by a torsionally stiff hose.