Deep Tomography (up to a depth of 1000 m)

SBS1000

The borehole source SBS1000 Magnum is designed for P-wave tomography between boreholes up to 1000 m depth. The SBS1000 Magnum consists of three parts housing the complete high-voltage power supply for charging up to about 3 KV. The source can be connected to a GO-4 cable head and a standard logging unit (4-conductor cable). The unit is powered from surface by means of a 230 VAC power supply.

Generated wave type: P
Signal frequencies: Up to 5 kHz (depending on geology and borehole distance)
Operational depth: Up to 1000 m
Power supply at surface: 230 VAC
Source diameter: 70 mm
Borehole diameter: Min. 80 mm
Signal transition: 4-conductor logging cable
Cable head: GO-4

 

BHC1000

The digital hydrophone string BHC1000 is a fully digitized borehole receiver unit running on 4-conductor logging cable.The BHC1000 consists of max. 24 hydrophones moulded to a multicore cable. A digitization unit is placed on top of the string and can be connected to the standard 4-conductor logging cable. At surface a control unit is connected to the logging winch and directly to laptop.

sledgehammer

SBS 1000 probe  
Hydrophone sensor: SQ54
Pre-Amplification: Fixed 4 x gain
Operational depth: up to 1000m
Number of hydrophones: 24
Max.pressure: 100 bar
Temperature range: 0-70 °C
Digitizer length: 70 cm
Digitizer diameter: 57 mm
Borehole diameter: Min. 70 mm
Depth indicator: Automatic depth counter
Signal transmission: 4-conductor cable
Cable head: GO-4
A/D conversion: 24 bit
Sampling frequencies: 250-48000 Hz
Trace length: 65000 samples
   
SBS 1000 control unit  
Power: Car battery (9-18 V DC)
Weight: 3 kg
Communication: 2 wire RS-485
Downhole electronics: DSP = Blackfin 548,64 MB SDRAM
Trigger: Piezo, switch, TTL
Auxiliary channel: 4

 

BGK1000

The BGK1000 is a digital borehole geophone used to receive P- and S-waves in dry and water filled boreholes. The borehole geophone can be used for seismic downhole applications.

Natural sensor frequency: 15 Hz (others on request)
Sensor arrangement: Tri-axial
Power supply: 12 V input 72 V output
Operational depth: Up to 2000 m
Max. pressure: 200 bar
Temperature range: 0-70 °C
Receiver length: 800 mm
Receiver diameter: /td> 60 mm
Receiver weight: 8 kg
Borehole diameter: 75-200 mm
Clamping system: Motor-driven clamping arm
Orientation: Magnetic compass (+/- 2.5°)
Communication: 2 wire RS-485
Downhole electronics: DSP = Blackfin 548,64 MB SDRAM
Cable head: GO-4
   
Digitisation  
Design: Hinz Messtechnik GmbH
A/D conversion: 24 bit
Sampling frequencies: 250-48000 Hz
Trace length: Max. 21 s
Trigger: TTL, geophone, contact
Software: SmartRec (Geotomographie)