IPG800 : Light Downhole S-Wave Sparker Source
IPG800 | Impulse Generator
The Impulse Generator IPG800 is the high voltage supply to the seismic borehole sources BIS-SH and SBS42. The energy is stored in capacitors which discharge through a mechanical switch. The lightweight IPG800 is incorporated in a robust PeliTM case.
The IPG800 is operated by a Remote Control Unit (RCU) which is used to start a pre-defined sequence of shots or to stop the operation. The RCU is connected to the seismograph to send an accurate trigger signal.
BIS-SH-DS | Light Downhole S-Wave sparker Source
The borehole source BIS-SH-DS generates horizontally polarized shear waves (SH) and compressional waves (P). The seismic signals are highly repeatable. The source works in dry or water filled boreholes and can be used in vertical or horizontal boreholes.
Energy released by the IPG5000 discharges through a system of electromagnetical coils adjacent to a copper plate. If the plate is rejected a mechanical impact to the borehole wall is generated. The borehole source is coupled to the borehole wall by a pneumatic clamping system (inflatable bladder). The orientation of the source is controlled from surface by a torsionally stiff hose.
Impulse voltage : 800 V.
Impulse energy : 1000 J.
Power supply : 2×12 V (car batteries).
Shot release : Single or continuous (5/10 shots).
Repetition rate : 10 s.
Dimensions : 53 x 43 x 23 cm.
Weight : 15kg.
Special features : Impulse counter, test trigger, emergency OFF button, intern/extern operation.
RCU : Single or continuous shot release, impulse counter, test trigger, trigger output, emergency OFF button.
Manufacturer: Geotomographie (Germany).
Frequency: up to 4 kHz.
Cable length: 60m.
Probe length: 880 mm.