Floating platform working in sea area of ice region

Abstract

The invention discloses a floating platform used for operation in ice zone. The floating platform comprises an upper-layer deck, a platform body and upside facilities; the platform body comprises a vessel body with an axisymmetric reversed platform-shaped structure; the area of the water plane connected by the platform body and water is caused to be less than the area of the upper surface of the platform body. The vessel body with the axisymmetric reversed platform-shaped structure is a vessel body with a reversed positively round platform-shaped structure, a vessel body with a reversed positively elliptical platform-shaped structure or a vessel body with an axisymmetric reversed prismatic platform-shaped structure. The shape for floating platform which is easy to smash the sea ice leads the floating platform to have more excellent anti-ice performance of the floating body. The mooring system of the platform is designed to be that: the warping hawser is extended from the bottom of the vessel body to the seabed; the warping hawser is protected by the vessel body and does not directly suffer the effect of the sea ice so that the use reliability and safety of the mooring anchor chain are effectively improved. Under conditions of severe sea ices, the floating platform is characterized by better safety and reliability and can solve the technical problem that the floating body can not operate in severe sea ice zones for a long time.

Description

technical field [0001] The invention relates to a floating platform for operating in ice areas and sea areas, in particular to a floating platform for operating in ice areas and sea areas with resistance to sea ice. Background technique [0002] At present, my country's shallow water offshore oil and gas development is mainly concentrated in the Bohai Sea. Due to its high latitude, the Bohai Sea region is often accompanied by the appearance of sea ice in winter. Especially in severe cold years, the frozen area can reach 80% of the total area of ​​the Bohai Sea. Fixed platforms such as jackets play an important role in oil and gas exploitation in the Bohai Sea, but their applicability is limited due to their immovability and lack of oil storage capacity. Especially for some marginal oil fields with relatively deep water depth, the application of jacket platform will greatly reduce the economic efficiency of the whole project. [0003] For this reason, the use of floating pl...

AI Technical Summary

Problems solved by technology

For sea areas with ice conditions such as the Bohai Sea, the problem with the multi-point mooring method is that if the mooring point of the mooring line on the mooring structure is above the water surface, when the mooring structure moves under the action of external forces such as environmental forces , with the movement of the mooring structure, the mooring line will repeatedly collide with sea ice and erode, thereby accelerating the loss of the mooring line

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