Équipement et logiciel pour des études géophysiques: conception, fabrication, soutien, fourniture

Borehole source of SV-waves GEOSv

Caractéristiques principales:
  • Light, powerful and easy-to-use
  • Upward downward vertical shear waves
  • No need to orientate
  • Pneumatic locking system
Prix : sur demande
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GEOSv is the unique borehole source specifically designed for crosshole seismic testing (CST). Provided with a fast-locking pneumatic system, it allows to generate polarized vertical shear waves. This device is fully in accordance with international standard ASTM D7400-08. The operation of the GEOSv source is provided by the Jack energy sources.

Parallel crosshole seismic testing field data obtained with borehole source GEOSv
Parallel crosshole seismic testing field data obtained with borehole source GEOSv (distance between wells — 4 m).
From left to right: CST on S-wave data (Z-component); CST on P-wave data (H-component); The vertical velocity distribution of the S- and P- waves in the interwell space, respectively.
System
Diameter 65 mm
Lenght 654 mm
Waterproof 200 m
Max air pressure 25 bar
Air pipe connection 6 mm
Max piston range 21.5 mm
Connector high voltage 7 pins
Mechanical features
Case aluminium
Clamping pistoms 2
Eleactronic features
Power supply max 3000V 300J
Frequency bandwidth 100-600 Hz