Riser

Details Riser Riser

2007-01-16

2007-01-16

Beach, Thomas A (Department: 3671)

Wells

Submerged well

Riser

C166S355000, C405S224200

Reexamination Certificate

active

10857362

ABSTRACT:
A riser for conveying fluids from a subsea location to a surface vessel comprises an upper section which is located in a confining conduit, said upper section being allowed to deform elastically into a helical configuration against the inside of the confining conduit when subjected to axial compression. The riser further comprises a main section extending below the confining conduit to said subsea location. The riser also comprises a buoyancy arrangement which keeps the main section in tension. This arrangement allows the Christmas tree to be supported directly on the deck of the surface structure and allows the surface structure to support the weight of the tree as well as the tubing which is hung off from the tree.

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