Casing head slip lock connection for high temperature service
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United States of America Patent
Stats
-
Nov 22, 2011
Grant Date -
May 14, 2009
app pub date -
Nov 13, 2008
filing date -
Nov 13, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wellhead connection for connecting and sealing to a casing, including an upper head housing accommodating the upper end of the casing in its central bore, a stop shoulder in the central bore to allow the upper head housing to rest on the upper end of the casing, and a seal profile section formed at the lower end of the central bore below the stop shoulder. The wellhead connection is configured such that, first connecting the slip housing and bottom ring with a bottom connector energizes slip connectors into gripping engagement with the casing and locks the slip housing and bottom ring around the casing, while thereafter connecting the upper head housing and the bottom ring with a top connector energizes the metal seal ring so as to radially compress the metal seal ring against the casing to form a metal seal.
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