Statoil Asa

Sevan Marine Asa

Otto Skjåstad

Kåre Syvertsen

Pentti Paurola

Jørgen Eide

Jan Aarsnes

A floating production unit is operable for production and storage of hydrocarbons. The production unit exhibits in operation movement properties rendering connection of one or more loose hanging risers () of suitable material possible. Such a unit comprises a hull () and a deck () in an upper end of the hull, the deck being equipped adequately in accordance with the intended application. The floating production unit is distinguished in that the hull () is configured to allow suspension of the riser () on at least one frame () arranged in a shaft/moonpool () in a center of the hull () wherein vertical movements of the hull () are minimized, and that the moonpool () of the unit surrounds and protects an upper part of the one or more risers () and fixed tubes for transfer of fluid to a processing facility of the production unit against external forces such as waves, ice and vessel collisions, in addition to corresponding protection during connection of the one or more risers () unto the at least one frame ().

Production unit having a ballastable rotation symmetric hull and a moonpool

A system for supplying cooling water to a process on board a floating vessel for the production of hydrocarbons, wherein the vessel () is anchored by means of a bottom-anchored turning unit () mounted in a receiving space () in the hull () of the vessel and allowing turning of the vessel () about the turning unit, and wherein the turning unit () supports a swivel unit () for the transfer of hydrocarbons from production risers () extending between the seabed and the turning unit (), the system comprising a conduit means () depending from the vessel () to a depth for taking in cooled sea water, and a pump means () for pumping of the sea water from the conduit to a place of use for the process. The turning unit () is designed as a seawater swivel, the unit being provided with one or more passages () for receiving upper end portions of respective seawater risers () constituting the conduit means, and with a means for transferring sea water from the upper end portions of the risers () to an annulus () arranged at the boundary surface between mutually movable parts () of the turning unit () or between the tuning unit () and the vessel hull (), and communicating with one or more passages () arranged in the vessel hull and leading to said place of use, a seawater sealing means () being arranged on each side of the annulus ().

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Kolbjørnsvik, Norway

Otto Skjåstad