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Apparatus and methods for self-powered communication and sensor network

  • US 7,400,262 B2
  • Filed: 02/02/2005
  • Issued: 07/15/2008
  • Est. Priority Date: 06/13/2003
  • Status: Active Grant
First Claim
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1. A system for communicating data through a drill string, comprising:

  • a jointed tubular string having a first section and a second section connected at a connection joint, said tubular string having a fluid in an internal passage thereof;

    a first acoustic transducer mounted in the internal passage at an inner surface of the first section proximate the connection joint; and

    a second acoustic transducer mounted in the internal passage at an inner surface of the second section proximate the connection joint, wherein a signal transmitted from the first section to the second section is configured to be transmitted across the connection joint as an acoustic signal in the fluid from the first acoustic transducer to the second acoustic transducer.

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