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Well monitoring by means of distributed sensing means

  • US 9,689,254 B2
  • Filed: 08/03/2015
  • Issued: 06/27/2017
  • Est. Priority Date: 05/27/2009
  • Status: Active Grant
First Claim
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1. A method for downhole monitoring comprising:

  • interrogating an unmodified optic fibre arranged along the path of a well bore to provide distributed acoustic sensing;

    simultaneously sampling data gathered from a plurality of contiguous portions of said fibre; and

    processing said data to determine one or more well bore parameters;

    wherein processing said data includes detecting the response to an acoustic stimulus, andwherein said parameter is a well condition profile.

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