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Full Wave Sonic Tool (FWS)
This tool has been specially designed to provide a full wave-form recording of sonic signals and uses fixed spaced transmitter – receivers. The received signals are digitised at fast sampling rate resulting in high resolution data. The data may be processed for P wave velocity (or transit time) and amplitude. Estimates of S wave velocity maybe obtained under suitable formation and borehole conditions.
The P wave velocity log may be user for identifying variations in hardness and porosity.
The log can only be achieved in fluid filled unlined boreholes.

Specifications
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Size:1.9m x 60mm
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Weight:22kg
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Sampling rate:Variable (500 samples at 4ms or slower)
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Resolution:16 bit; Record length: min 2ms
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Frequency:16 levels
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Gain settings:23 kHz 16 levels
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Max. temperature:80°C
Logging Conditions
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2 – 9 m / min
Borehole Conditions
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Diameter 75 to 300mm
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Water filled
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Unlined