Hybrid riser configuration

Details Hybrid riser configuration Hybrid riser configuration

2005-01-04

2005-01-04

Will, Thomas B. (Department: 3671)

Wells

Submerged well

Means removably connected to permanent well structure

C166S350000, C166S345000, C405S224400

Reexamination Certificate

active

06837311

ABSTRACT:
Hybrid riser configuration comprising a plurality of steel riser pipes substantially inserted in aluminium guide conduits, with buoyancy means and tethering tension means, the guide conduits and riser pipes being rigidly connected to a base anchored to the ocean floor. The guide conduits serve as the tethering tension means and as radial constraint for the respective riser pipe therein to allow the riser pipe to buckle in elastic deformation (Euler) to form a spiral when expanding due to service pressure and temperature. A method for installing the riser configuration is also disclosed.

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