Small diameter external production riser tieback connector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 2003
Grant Date -
Nov 29, 2001
app pub date -
May 25, 2001
filing date -
May 26, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tieback connector includes a passive lower locking system and an active upper locking system to exert a positive locking force on the connection between a production riser and a high pressure wellhead. The tieback connector is composed of an outer housing which carries lower locking dogs, upper locking dogs and a piston. The piston is located above the lower end of the production riser and controls the movement of the outer housing. As the piston is stroked the outer housing cams the lower dogs into grooved profile in the wellhead housing. As the piston is stroked further the upper dogs exert a force onto the production riser that locks the riser to the wellhead housing.
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