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Split-coil, redundant annular coupler for wired downhole telemetry

  • US 8,109,329 B2
  • Filed: 01/15/2009
  • Issued: 02/07/2012
  • Est. Priority Date: 01/15/2009
  • Status: Active Grant
First Claim
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1. A set of annular couplers for transmitting data across a tool joint formed by the box end of one downhole tool and the pin end of a second downhole tool, the set of annular couplers comprising:

  • a first annular coupler having a circumference and being disposed in an annular recess in a shoulder of the box end;

    wherein the first annular coupler includes;

    a first coupler segment spanning a first portion of the circumference of the first annular coupler; and

    a second coupler segment electrically insulated from the first coupler segment of the first annular coupler and spanning a second portion of the circumference of the first annular coupler;

    a second annular coupler having a circumference and being disposed in an annular recess in a shoulder of the pin end;

    wherein the second annular coupler includes;

    a first coupler segment spanning a first portion of the circumference of the second annular coupler; and

    a second coupler segment electrically insulated from the second coupler segment of the second annular coupler and spanning a second portion of the circumference of the second annular coupler;

    wherein the first annular coupler is biased into engagement with the second annular coupler.

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