A semi-fixed offshore platform

Abstract

The invention provides a semi-fixed ocean platform and belongs to the technical field of ocean engineering. The semi-fixed ocean platform comprises a base body, a carrier plate located below the basebody and a balance weight body located below the carrier plate. A mooring system capable of connecting the carrier plate with seabed land is arranged between the carrier plate and the seabed land. Themooring system comprises multiple mooring devices arranged on the edge of the carrier plate. Each mooring device comprises a coiling block rotationally connected to the carrier plate. A cable rope iswound round each coiling block. The lower end of each cable rope is connected with an automatic pile driving structure. One end of each rotary arm is provided with a hinged joint. The other end of each rotary arm is provided with a hinging cavity matched with the corresponding hinged joint. Each rotary arm is connected with a hydraulic input manifold. Each hydraulic input manifold communicates with a hydraulic input header pipe. Pressure stabilization cavities communicating with the hydraulic input manifolds are formed in the hinged joints. Each guide hole is internally connected with a locating pin in a sliding mode. The semi-fixed ocean platform has the advantage that the ocean platform can be temporarily fixed to the sea surface.

Description

technical field [0001] The invention belongs to the technical field of ocean engineering and relates to a semi-fixed ocean platform. Background technique [0002] Offshore platforms are structures that provide production and living facilities for drilling, oil production, container transportation, observation, navigation, construction and other activities at sea. According to structural characteristics and working conditions, they can be divided into three categories: fixed, movable and semi-fixed. The lower part of the fixed platform is directly supported by piles, expanded footings or other structures and is fixed to the seabed. According to the support situation, it is divided into two types: pile foundation type and gravity type. The movable platform floats in the water or is supported on the seabed, and can be displaced from one well to another. According to the supporting conditions, it can be divided into bottom type and floating type. In recent years, a novel semi-f...

AI Technical Summary

Problems solved by technology

In recent years, a novel semi-fixed offshore platform is being studied, which can be fixed in deep water and has mobility. The typical semi-fixed offshore platform is a tension leg platform. The principle of this platform is to use semi-compliant and semi-rigid The platform generates a buoyancy much greater than the self-weight of the structure, which is balanced with the pretension, so as to provide a relatively stable and safe working environment for production, and its own upright buoy structure can also make it have good motion performance. However, this kind of platform Affected by waves, etc., there is movement, which is not conducive to the smooth and stable coordinate operation of the platform

[0003] The fixed platform requires subsea operations, which are difficult and risky, and it takes a long period to relocate the platform

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