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US 2003/0143034 A1Published application
Shallow water riser system
OwnerRon L. Kelm, Janet T. Leawood +1inventors
InventorsRon L. Kelm, Janet T. Leawood, Peter A. Lunde
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OwnerRon L. Kelm, Janet T. Leawood +1inventors
InventorsRon L. Kelm, Janet T. Leawood, Peter A. Lunde
Estimating the term…
A conduit structure (44) connects subsea oil wells to a floating structure (12) such as a vessel, in shallow water, the conduit structure providing a low cost and reliable fluid connection during drift of the vessel. The conduit structure includes a seafloor riser support (50) with a lower end (52) fixed to the seafloor and an upper end (54) lying a plurality of meters above the seafloor. A flexible pipe or hose (46) extends in a double catenary curve from the top of the seafloor riser support, at a downward incline away from the seafloor riser support and then at an upward incline to the floating structure. A rigid pipe (70) can extend along a plurality of meters of the height of the riser support to minimize the required length of flexible hose and facilitate installation.
An offshore fluid transfer system which includes a fluid-passing seafloor structure such as one connected to a seafloor well or pipeline, a compliantly anchored floating structure such as a vessel, at least one mooring line that is anchored to the seafloor and that holds said floating structure in the vicinity of said seafloor structure and at an initial position in a calm environment, and a fluid-carrying conduit structure that extends up from said seafloor structure to said floating structure, wherein:
An offshore fluid transfer system that lies in a sea of predetermined depth for transferring fluid between a fluid-carrying seafloor structure that lies at the seafloor and a floating structure that floats at the sea surface and that is compliantly anchored to remain in the vicinity of the seafloor structure, the system including a conduit comprising a flexible conduit member that extends along much of the sea depth, said conduit having upper and lower ends coupled respectively to said floating structure and to said seafloor structure, comprising:
An offshore fluid transfer system that lies in a sea of predetermined depth for transferring fluid between a fluid-carrying seafloor structure that lies at the seafloor and a floating structure that floats at the sea surface and that is compliantly anchored to remain in the vicinity of the seafloor structure, the system including a conduit comprising a flexible conduit member that extends along much of the sea depth, said conduit having upper and lower ends coupled respectively to said floating structure and to said seafloor structure, comprising:
Dependencies are inferred from the claim text.