FULLWAVE SONIC

METHOD

FWS Full Waveform Sonic tool is used extensively in the groundwater, mining, and geotechnical industries. Sonic logs are widely employed, often in combination with other logs, to provide porosity, permeability, and geo-mechanical properties. This probe is ideal for cased-hole and open hole applications, such as fracture identification and concrete thickness evaluation.

PROCEDURE

The FWS implements a high energy source wave generated by a ceramic-piezoelectric transducer to excite the adjacent geological formation. Waves of different frequencies are developed and propagated within the formation, allowing the real time analysis of the full waveform by WellCAD software. Under suitable borehole conditions, Compressional (P), Shear (S), Stoneley, and Tube wave arrivals can be detected. The FWS sonic probe must be used in a fluid filled hole. The tool is constituted with one transmitter and 3 or 4 receivers.

APPLICATIONS

Common applications include:

  • Bridge/dam foundation analysis
  • Insitu materials testing
  • Soil and rock mechanics
  • Earthquake engineering
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