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Down hole

In the down hole seismic method we record the P and S waves arrivals. The signal is generated on the surface using a sledge hammer and  received in the borehole using sensors (multi-directionnal geophones)

The results are used to calculate P and S waves velocities as well as the dynamic parameters:

  • Poisson's coefficient
  • Compressionnal modulus (Young)
  • Shearing modulus 
  • Incompressibility modulus