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Monitoring of conduits

  • US 9,453,821 B2
  • Filed: 06/20/2012
  • Issued: 09/27/2016
  • Est. Priority Date: 06/20/2011
  • Status: Active Grant
First Claim
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1. A method of conduit monitoring comprising:

  • taking data acquired from at least part of a conduit using a fibre optic distributed acoustic sensor as an object passed along the conduit, said data corresponding to acoustic signals detected at each of a plurality of sensing locations of the fibre optic distributed acoustic sensor; and

    analysing the acoustic signals detected at at least one sensing location as the object moves along the conduit to determine whether the presence of the object attenuates an acoustic signal so as to discriminate acoustic signals received at said sensing location from different locations.

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