Annulus pressure operated vent assembly

Patent · Tue Jan 31 04:00:00 EST 1989

OSTI ID:6228926

Haugen, D M; Wesson, D S; Luke, R R; George, K R

An apparatus is described for communicating an annilus outside a tubing string with an interior of the tubing string to which a perforator is connected, the apparatus comprising: vent means mounted in the tubing string for providing an actuatable opening in the tubing string above the perforator, the vent means comprising: a vent body having a port therein; and a sleeve slidably mounted in the vent body for movement between a closed position, wherein the port is closed to prevent communication of the annulus outside the tubing string with the interior of the tubing string through the port, and an open position, wherein the port is open to allow communication of the annulus outside the tubing string with the interior of the tubing string through the port; actuating means for actuating the vent means so that the position of the sleeve is changed in response to an external force existing above the vent means, the actuating means including means for connecting to the tubing above the vent means and means for connecting to the sleeve; and coupling means for coupling the sleeve to the perforator so that actuation of the vent means by the actuating means also provides an initiating force to the perforator.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4800958
• OSTI ID: 6228926
• Country of Publication: United States
• Language: English

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