Sonic / CBL Sonde

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  • The CBL Sonde permits a fine analysis of the bond quality of a cemented steel casing.
  • Down-hole and up-hole logging is based on a soundwave emitted by a transmitter placed on the sonde.
  • The device records the amplitude and arrival time of the first arrival at the lower receiver and the wave-trains at both receivers.
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  • Specific constraints

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  • The hole must be filled with water or mud
  • Maximum depth : 400 meters
  • Steel casing in recommended
  • Correct centering is essential
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