Explosively opened production valve including a frangible breaku

Details Explosively opened production valve including a frangible breaku Explosively opened production valve including a frangible breaku

1992-10-02

1994-06-07

Dang, Hoang C.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

137 70, 166 551, 166 63, 166299, 166317, 166332, 166386, E21B 3408, E21B 43116, E21B 4312

Patent

active

053181263

ABSTRACT:
A production valve includes an outer housing having a production port, a piston disposed within the outer housing and adapted to move from one position to another position, a frangible breakup element supporting the piston in the one position, and a detonating cord adapted for propagating a detonation wave passing through the center of the piston and the breakup element. The detonation wave shatters the frangible breakup element when the detonation wave, propagating within the detonating cord, passes through the breakup element. When the breakup element shatters, the support provided to the piston by the breakup element is removed. When the support provided to the piston by the breakup element is removed, the piston moves from the one position to the other position in response to either tubing pressure or rathole pressure or both, and the production port of the production valve opens when the piston moves to the other position.

REFERENCES:
patent: 2674313 (1954-04-01), Chambers
patent: 3208355 (1965-09-01), Baker et al.
patent: 3209937 (1965-10-01), Hirst et al.
patent: 3589442 (1971-06-01), Kilgore
patent: 4515217 (1985-05-01), Stout
patent: 4557331 (1985-12-01), Stout
patent: 4603741 (1986-08-01), Edgmon
patent: 4616701 (1986-10-01), Stout et al.
patent: 4616718 (1986-10-01), Gambertoglio
patent: 4905759 (1990-03-01), Wesson et al.
Book entitled "Schlumberger Tubing Conveyed Perforating", dated 1988, pp. 4-7 and 4-8.

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