Bi-modal AcousTic (BAT™) Sensor

The BAT™ LWD sensor provides wireline-quality compressional and shear slowness (∆t) logs in both fast and slow formations. The dual-frequency transmitters and dual seven-receiver array configuration ensure a superior signal-to-noise ratio and measurement redundancy for service reliability.

Petrophysical Applications

• Porosity determination
• Formation mechanical properties
• Gas detection from Vp/Vs ratio
• Complex lithology and porosity determination (in combination with Sperry's LWD neutron porosity and spectral density measurements)

Drilling Applications

• Pore pressure determination
• Rock strength calculations provide:
  • Optimal mud weight window
  • Bit selection and bit wear predictions
• Borehole stability analysis

Geophysical Applications

• Time-to-depth seismic correlation while drilling
• Real-time synthetic seismograms
• AVO analysis