Equipment & Software for Geophysical Surveys: Design, Manufacture, Support, Supply

Borehole source of SV-waves GEOSv

Main features:
  • Light, powerful and easy-to-use
  • Upward downward vertical shear waves
  • No need to orientate
  • Pneumatic locking system
Price : on request
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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

Length

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 pistons

2

Electronic features

Power supply

max 3000V 300J

Frequency bandwidth

100-600 Hz