SCOTON's Array Noise Tool (ANT)  uses an array of highly sensitive wide-band acoustic sensors to detect sound produced downhole by fluid movement.

DESCRIPTION of Array Noise Tool (Advanced Leak Detection)

The tool employs a set of innovative differential measurements to enable excellent rejection of unwanted noise such as "road noise" produced while the tool is moving in the wellbore. The sensor  array  also  allows  propagation-direction processing to further extract weak fluid movement sounds from behind multiple pipes.

Features of Array Noise Tool (Advanced Leak Detection)

  • Total of 38 Hydrophones
  • Sensor Configuration: 3 monopole + 6 differential
  • X & Y Differential + Wave Propagation
  • Provides accurate results while logging continuously
  • Spectral Analysis
  • Excellent (> 30dB) Road Noise Rejection
  • Azimuthal Sensitivity
  • Combinable including simultaneous RCBL logging


By coupling both differential sensors with array processing this tool can acquire accurate measurements while logging up or down. This saves time and improves effectiveness in any leak detection applications.

Application of Array Noise Tool (Advanced Leak Detection)

  • Leak Detection (tubing/casing/packer leaks)
  • Diagnosis of Sustained Casing Pressure
  • Location of open perforations
  • Identification of flow zones behind pipe
  • Identification of channeling behind pipe

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