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Determining perforation orientation

  • US 9,945,215 B2
  • Filed: 08/24/2012
  • Issued: 04/17/2018
  • Est. Priority Date: 08/26/2011
  • Status: Active Grant
First Claim
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1. A method of orienting an object in a wellbore comprising:

  • varying the orientation of the object in the wellbore;

    activating at least one directional acoustic source arranged in fixed relation to said object so as to generate sound in a plurality of different orientations of said object;

    interrogating an optical fibre deployed down the wellbore to provide distributed acoustic sensing in the vicinity of the object; and

    analyzing acoustic signals detected by the optical fibre so as to determine the orientation of the at least one directional acoustic source relative to the optical fibre wherein the acoustic signals are analyzed to determine the relative intensity of the detected acoustic signals and wherein the detected acoustic signals are analyzed to determine the orientation of the object which leads to the greatest detected acoustic intensity.

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