Full Wave Sonic Tool (FWS)
High-Resolution Sonic Signal Analysis
The Full Wave Sonic Tool (FWS) is specifically designed to provide detailed, high-resolution recordings of sonic signals using fixed-spaced transmitters and receivers. By digitising the received signals at a fast sampling rate, the tool delivers precise data that can be processed for P-wave velocity (or transit time) and amplitude. Under suitable conditions, estimates of S-wave velocity can also be derived, offering further insights into subsurface properties.
The P-wave velocity log is particularly useful for identifying variations in formation hardness and porosity, making the tool invaluable for geological, hydrogeological, and geotechnical investigations. Please note that this tool is only compatible with fluid-filled, unlined boreholes.
Key Features
Specifications
- Dimensions: 1.9m (length) x 60mm (diameter)
- Weight: 22kg
- Sampling Rate: Variable (500 samples at 4ms or slower)
- Resolution: 16-bit; minimum record length 2ms
- Frequency: 23kHz
- Gain Settings: 16 levels
- Maximum Temperature: 80°C
Logging Conditions
- Logging Speed: 2–9 m/min
Borehole Compatibility
- Diameter Range: 75–300mm
- Environment: Fluid-filled boreholes only
- Lining: Suitable for unlined boreholes
The Full Wave Sonic Tool (FWS) provides unparalleled detail and precision in sonic signal analysis, enabling the identification of subsurface properties such as porosity and hardness. Its high-resolution capabilities make it an essential instrument for advanced subsurface investigations.
