The borehole seismic array with three-component clamping geophone modules is designed for multiwave crosshole seismic testing. The number of modules on the cable can vary from 1 to 8. The interval between modules is determined by the Customer.
As sensor elements, three normally oriented geophones with a natural frequency of 12.5 Hz are used in each module. The module clamping is achieved by a passive flat spring. Lowering the cable into the borehole is conducted through the load fixed on the end of it.
The geophone array can be supplied on a reel with slip ring, which allows to leave the equipment plugged into it while winding and unwinding the cable.
|Number of modules in array||1 - 8 pc|
|Number of channels in module||3 pc|
|Compensation coupled geophones||yes|
|Natural frequency of geophones||12.5 Hz|
|Maximum operating pressure||15 atm.|
|Interval between modules in array||1 - 10 m|
|Maximum diameter of module||60 m|
|Borehole diameter range||70 - 150 mm|
|Clamping force range||1:7 - 1:11|
|Remote snapping of springs||yes|
|Operation without plummet in the well||yes|
|Compatible with linear seismic stations||yes|