Dril-quip, Inc.

Timothy A Pillow

Lionel J Milberger

Morris B Wade

Gregory Dale Williams

A running tool, a lockdown sleeve, and a seal ringare provided for axially fixing upward movement of a tubular hanger with respect to a subsea wellhead. The running toolincludes a tool latching and unlatching mechanismfor axially connecting the running tool to the subsea wellhead housing, a tool force applicatorfor exerting a downward setting force, and a sleeve latching mechanismfor securing the lockdown sleeve to the subsea wellhead housing. The sealis provided between the lockdown sleeve and one of the tubular hanger and the wellhead housing. The method of the invention includes running the tool and sleeve in open water to the subsea wellhead housing, locking the tool to the housing, setting the seal, locking the sleeve to the housing, then retrieving the tool in open water.

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Houston, TX, United States of America

Timothy A Pillow