The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1985
Filed:
Jun. 07, 1982
GEO Vann, Inc., Houston, TX (US);
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.