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Telemetry System for Wireless Electro-Acoustical Transmission of Data Along a Wellbore

  • US 20150275657A1
  • Filed: 12/18/2013
  • Published: 10/01/2015
  • Est. Priority Date: 12/19/2012
  • Status: Active Grant
First Claim
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1. An electro-acoustic system for wireless telemetry along a tubular body, comprising:

  • a tubular body fabricated from steel;

    at least one sensor disposed along the tubular body;

    a sensor communications node placed along the tubular body and connected to a wall of the tubular body, the sensor communications node being in electrical communication with the at least one sensor and configured to receive signals from the at least one sensor, the signals representing a parameter associated with a subsurface location along the tubular body;

    a topside communications node placed proximate a surface;

    a plurality of intermediate communications nodes spaced along the tubular body and attached to an outer wall of the tubular body, the intermediate communications nodes configured to transmit acoustic waves from the sensor communications node to the topside communications node in node-to-node arrangement; and

    a receiver at the surface configured to receive signals from the topside communications node;

    wherein each of the intermediate communications nodes comprises;

    a sealed housing;

    an independent power source residing within the housing;

    an electro-acoustic transducer and associated transceiver also residing within the housing designed to receive and re-transmit the acoustic waves, thereby providing communications telemetry; and

    wherein each of the acoustic waves represents a packet of information comprising a plurality of separate tones.

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