Three-stand-column floating platform

Abstract

The invention provides a three-stand-column floating platform. The three-stand-column floating platform comprises a floating box, three stand columns, a truss structure, an upper deck and a lower deck, wherein the floating box is constructed in the mode that the cross section is triangular in general, and a through hole penetrating through in the longitudinal direction is formed in the middle of the floating box; the three stand columns are in parallel and arranged on the outer side of the floating box at equal intervals, the lower portions of the three stand columns are connected with the floating box; the truss structure is arranged on the three stand columns, and is a double-layer structure in the mode that an upper truss and a lower truss are jointed through connecting rods, projection of the lower truss in the horizontal direction is triangular in general, and the lower truss is connected with the upper ends of the stand columns; the platform device is arranged on the upper deck and the lower deck. According to the three-stand-column floating platform of the embodiment, the special truss structure is adopted, and on the premise that the whole strength requirement of the three-stand-column floating platform is met, the weight of the whole platform structure is greatly decreased, arrangement of the device is considered at the same time, and the strength and the use efficiency of the deck structure can be quite effectively improved.

Description

technical field [0001] The invention relates to the field of offshore oil engineering, and relates to a floating platform used for oil and gas production and drilling, and more specifically, to a three-column floating platform. Background technique [0002] Semi-submersible platforms have been widely used in the exploration and development of offshore oil fields. Its economy and applicability have been widely recognized, and it is one of the main platform forms in the development of oil and gas fields with a water depth of more than 200 meters. Since this type of platform mainly relies on the waterline surface of the column to provide stability, it is also called a column-stabilized platform. Its characteristic is that under the same displacement, the water plane is much smaller than other forms of marine structures, and the natural cycle of the platform is far away from the main energy area of ​​the wave, so it can still maintain good motion performance in extremely harsh ...

AI Technical Summary

Problems solved by technology

The three-pillar floating platform is very difficult to use in diving

That is, after the design of the three-column floating platform meets the stability requirements, the span between the columns is relatively large. On the basis of the same displacement level, in order to meet the stability requirements, the column spacing of the three-column semi-submersible platform is larger than that of other The type of platform is large, and the large column spacing makes the layout of the platform deck and the design of the deck structure very difficult

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