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Perforating string with longitudinal shock de-coupler

  • US 8,397,800 B2
  • Filed: 12/14/2011
  • Issued: 03/19/2013
  • Est. Priority Date: 12/17/2010
  • Status: Active Grant
First Claim
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1. A shock de-coupler for use with a perforating string, the de-coupler comprising:

  • first and second perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the first and second connectors; and

    at least first and second biasing devices which resist displacement of the first connector relative to the second connector in both of first and second opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector, wherein the first biasing device is compressed in response to displacement of the first connector in the first direction relative to the second connector, and the second biasing device is compressed in response to displacement of the first connector in the second direction relative to the second connector.

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