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Pressure activated down hole systems and methods

  • US 9,238,954 B2
  • Filed: 01/04/2013
  • Issued: 01/19/2016
  • Est. Priority Date: 08/15/2012
  • Status: Active Grant
First Claim
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1. A system for activating a down hole tool in a wellbore, the system comprising:

  • a base pipe defining an interior, an exterior, and one or more ports;

    an activation chamber defined by an external sleeve disposed about the base pipe, wherein the one or more ports facilitate fluid communication between the interior and the activation chamber;

    a piston located on the exterior of the base pipe and including a first piston side exposed to the activation chamber and a second piston side biasing the down hole tool such that any movement of the piston causes the down hole tool to correspondingly move, wherein the piston is moveable within the activation chamber from a first position to a second position for activating the down hole tool; and

    a rupture member separating the activation chamber from the interior and preventing fluid communication therebetween until a pressure differential between the activation chamber and the interior reaches a predetermined threshold value, at which point the rupture member ruptures and allows fluid communication between the activation chamber and the interior,wherein when the rupture member is intact, the piston is in the first position, and when the rupture member ruptures, the piston moves to the second position and thereby activates the down hole tool.

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