Integral-floating-box-type semi-submersible platform

Abstract

An integral-floating-box-type semi-submersible platform comprises an upper platform body and a lower floating body. Columns are connected between the upper platform body and the lower floating body, the lower floating body is an integral floating box, the upper surface and the lower surface of the floating box are parallel to the water surface, the vertical direction and the transverse direction of the floating box are consistent with the vertical direction and the transverse direction of the upper platform body, and the floating box extends along the vertical direction and the transverse direction of the upper platform body. At least three columns are connected between the upper platform body and the floating box and arranged at intervals along the vertical direction of the floating box, and the vertical section of each column is long-strip-shaped and is of a slice structure with two arc ends. The platform is small in draught, large in reserve cabin hold capacity, capable of keeping stable in storm and suitable for a shallow environment.

Description

technical field [0001] The invention relates to an offshore floating platform, in particular to a semi-submersible platform which adopts an integral buoyancy tank and a sheet structure column and is suitable for shallow water environments. Background technique [0002] The semi-submersible platform is also called column-stabilized platform, which has strong wind and wave resistance, good stability, wide range of water depth and large loading capacity, and is widely used in drilling and mining of offshore oil and gas resources. The semi-submersible platform is mainly composed of the lower floating body (or caisson), the middle column and the upper platform. The upper platform is the carrier of living and working places and equipment. The column is connected between the upper platform and the lower floating body to play a supporting role. The lower floating body controls the platform. The depth of submersion. Most of the existing semi-submersible platforms are deep-water type...

AI Technical Summary

Problems solved by technology

When the floating body of the semi-submersible platform is submerged into the water under operating conditions, the distance between it and the upper platform must be much greater than the maximum wave height in the sea area where it is located. Therefore, for the deep-water semi-submersible platform, the column is very high, generally above 20 meters. The height of the entire platform is very high. This kind of platform has a large draft and a heavy weight, which cannot be applied to shallow water environments.

Images