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Swivel assembly

  • US 7,193,527 B2
  • Filed: 08/05/2004
  • Issued: 03/20/2007
  • Est. Priority Date: 12/10/2002
  • Status: Expired due to Term
First Claim
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1. A swivel assembly for a downhole tool string, comprising:

  • first and second coaxial housings cooperatively arranged;

    the first housing comprising a first transmission element in communication with surface equipment;

    the second housing comprising a second transmission element in communication with the first transmission element and a third transmission element adapted for communication with a network integrated into the downhole tool string;

    an electronic circuitry in electrical communications with one of the transmission elements;

    a shield is externally mounted to the first or second housing and is adapted to protect a connection between the first and second housings from debris; and

    the shield comprises a means for lubricating the connection between the first and second housing.

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