Bar actuated vent assembly

Patent · Tue Apr 23 04:00:00 EST 1985

OSTI ID:5251822

Vann, R R; George, F R; Warren, D F

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.

• Assignee: GEO Vann Inc.
• Patent Number(s): US 4512406
• OSTI ID: 5251822
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CHEMICAL EXPLOSIVES
CONTROL EQUIPMENT
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
EXPLOSIVES
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUIDS
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PERFORATION
PIPES
RESERVOIR FLUIDS
SHAPED CHARGES
VALVES
WELL CASINGS
WELL COMPLETION
WELL RECOVERY EQUIPMENT
WELLHEADS
WELLS