Slim-bore tubing hanger
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United States of America Patent
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-
Sep 13, 2005
Grant Date -
Jul 31, 2003
app pub date -
Jan 29, 2003
filing date -
Jan 30, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A subsea wellhead assembly has a wellhead housing at the upper end of the well. The wellhead housing supports one or more strings of casing, each having a casing hanger. A tubing spool connects to the upper end of the wellhead housing. The tubing spool has a landing shoulder with a plurality of auxiliary passages extending from the shoulder to the exterior of the tubing spool. The auxiliary passages are spaced circumferentially around the tubing spool. A receptacle on the exterior of the tubing spool communicates with these auxiliary passages. A tubing hanger lands in the tubing spool, the tubing hanger having auxiliary ports spaced circumferentially around it. These ports mate with the auxiliary passages to communicate with auxiliary lines extending alongside the tubing. A production tree mounts to the upper end of the tubing spool. A control unit mounted to the production tree assembly has a flexible lead that extend from it and plugs into the receptacle.
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