Description
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 (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.
Specification
| 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 |
| Eleactronic features | |
| Power supply | Max 3000V 300J |
| Frequency bandwidth | 100-600 Hz |
Additional Equipment
Energy sources Jack
Are designed to provide functioning of sparkers of different types
Geophone array GStreamer
Hydrophone array WellStreamer
Seismograph TELSS-VSP for borehole surveying
Processing Software
RadExPro
ZondST2d — 2D seismotomography interpretation (refracted waves)
ZondST3d — 3D seismotomography interpretation (refracted waves)
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