Patent ID: 9027653
Filing Date: 2015-05-12
Classification: E21B

Abstract:
1. A system for initiating a down hole operation in a wellbore, the system comprising: a primary activation system including a moveable member that is movable to open a port that provides fluid communication between a first chamber and a second chamber and thereby initiate the down hole operation; and a secondary activation system for performing the down hole operation when the primary activation system fails, the secondary activation system including a passageway defined in the moveable member and extending between the first and second chambers, and a rupture member positioned in the passageway, the rupture member having a first side exposed to the first chamber a second side exposed to the second chamber, wherein, upon experiencing a threshold pressure differential between the first side and the second side, the rupture member ruptures to afford fluid communication between the first chamber and the second chamber to thereby initiate the down hole operation.