Andrew John Grohmann

US Patent:

20130206427, Aug 15, 2013

Filed:

Jul 8, 2011

Appl. No.:

13/635069

Inventors:

Denise A.M. Antunes - , US
Andrew J. Grohmann - Cypress TX, US
Bruce J. Witwer - Houston TX, US

International Classification:

E21B 33/04

US Classification:

166387, 277328

Abstract:

A seal assembly () is provided for sealing between an interior surface () on a wellhead () and a tapered exterior surface () on a hanger (). A unitary seal body () includes an upper portion for engagement with a force tool and a lower portion for sealing with the wellhead and the hanger. A first locking ring () is movable, radially inward for securing the sealing assembly to the hanger, and a second locking ring () is movable radially outward for securing the seal assembly to the wellhead. An actuation member () including a plurality of downward extending fingers passing through slots in the seal body move downward through a portion of the body to force the first and second locking rings into engagement with the wellhead and the hanger.