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Packer

  • US 6,564,876 B2
  • Filed: 02/09/2001
  • Issued: 05/20/2003
  • Est. Priority Date: 04/21/1999
  • Status: Expired due to Term
First Claim
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1. A packer for use inside a well, comprising:

  • a resilient element adapted to shift from a first position in response to a hydraulic pressure communicated from a surface of the well, wherein the resilient element has an outer diameter that is smaller than the diameter of the well, to a second position, wherein the resilient element seals the annulus in the well, and back to the first position;

    a tubing that moves relative to the resilient element when the resilient element is in the second position; and

    the resilient element circumscribing the tubing.

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