Bar actuated vent assembly

Details Bar actuated vent assembly Bar actuated vent assembly

1982-06-07

1985-04-23

Purser, Ernest R.

Wells

Processes

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

166 551, 166318, 175 456, E21B 43116, E21B 4326

Patent

active

045124060

ABSTRACT:
A vent assembly is positioned downhole in a borehole in underlying relationship with respect to a packer device. The vent assembly is connected within a production tubing string and a perforating gun is supported by the lower end of the string. A bar of special design is dropped down through the interior of the tubing and falls through the vent assembly and continues to fall down the tubing string to impact against a gun firing head. The action of the bar passing through the vent assembly moves structures associated therewith to cause a port to assume an open position. The subsequent impact of the bar against the gun firing head detonates the shaped charges of the gun. Formation fluid is then free to flow into the perforations, up the lower annulus, into the port of the vent assembly, and up the production tubing to the surface of the ground.

REFERENCES:
patent: 2493650 (1950-01-01), Baker et al.
patent: 3054415 (1962-09-01), Baker et al.
patent: 3151681 (1964-10-01), Cochran
patent: 3198254 (1965-08-01), Wise et al.
patent: 4031957 (1977-06-01), Sanford
patent: 4176717 (1979-12-01), Hix
patent: 4299287 (1981-11-01), Vann et al.

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