Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hans Paul Hopper0
Thomas G. Cassity0
Date of Patent
January 1, 2008
0Patent Application Number
110775870
Date Filed
March 10, 2005
0Patent Primary Examiner
Patent abstract
A wellhead has, instead of a conventional Christmas tree, a spool tree (34) in which a tubing hanger (54) is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the production casing hanger (21) for monitoring production casing annulus pressure, and the introduction of larger tools into the well hole without breaching the integrity of the well.
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