'Offshore semi submersible floating structure, and method of improving the movement induced by the vortex of a platform offshore semi submersible floating.

摘要

Offshore semi submersible floating structure, and method of improving the movement induced by the vortex of a platform offshore semi submersible floating. The disclosure provides a platform offshore semi submersible (5) with columns (6), which has a broad base (8) at the bottom of each column with pontoons (10) attached between the columns.On the basis of enlarged column can be at least as high as a height of the pier and at least in the modality can be approximately 50% of the depth of the platform. The broad base can change a form of current flow around the base and columns for came down. An outer corner of the base can be trimmed at an angle.Alternatively, the lower portions of the columns may extend horizontally outward to form a broad base of effective way that has similar characteristics. In some arrangements, the volume of the pontoon can be reduced as inversely proportional to the enlargement of the basis for the total fluctuation comparable.