Integral type foundation of tension leg platform provided with compression resistant water storage cabins and penetration method thereof

Abstract

The invention belongs to ocean engineering structure foundation of the ocean engineering field, and relates to an integral type foundation of a tension leg platform provided with compression resistant water storage cabins. The integral type foundation comprises four similar compression resistant water storage cabins, four similar barrel-shaped bases and girder grillage connecting elements; wherein, the four water storage cabins are arranged in a rectangle, a main body of each water storage cabin is a column, and the water storage cabins are connected with each other by the girder grillage connecting elements arranged on the side length of the rectangle; the lower part of each compression resistant water storage cabin is fixed with a barrel-shaped base which has an axle center being the same as that of the corresponding water storage cabin and is communicated with the barrel-shaped base by a first electronic valve, the upper end of the wall of the barrel-shaped base is provided with a one-way hull valve, and the compression resistant water storage cabins are also provided with second electronic valves connected with an exhaust duct. The invention also provides a penetration method adopting the foundation. The barrel-shaped bases can be sunk into the bottom of the sea within 24h, so that the offshore construction time is greatly shortened, and the invention is easy to control.

Description

technical field [0001] The invention belongs to the foundation of marine engineering structures in the field of marine engineering, and relates to a foundation suitable for tension leg platforms. Background technique [0002] my country's current development of oil and gas resources is mainly in sea areas below 200 meters in depth, and the research on deep-sea platform technology is still in its infancy. In the face of fierce competition in the deep-sea resources shared by all countries in the world, we must attach great importance to the development of deep-sea platform technology. Research. As an ideal platform type for deep sea, tension leg platform has been widely valued and developed, and has become the main force of deep sea development. [0003] At present, the anchorage foundation of the tension leg platform is divided into two forms: pile foundation and negative pressure barrel foundation. Through the comparative study of these two foundation forms, it can be seen t...

AI Technical Summary

Problems solved by technology

First of all, when relying on the pump to suck the seawater in the barrel, the pump body cannot withstand the huge pressure on the seabed of thousands of meters, cannot sink to the required depth, and cannot perform suction, so the negative pressure environment cannot be generated inside the barrel base, resulting in The base of the barrel cannot sink to the bottom of the sea

Even if the pump body is placed in the pressure-resistant box, the invention of the pressure-resistant box, assembly with the pump body, and internal pipeline layout are very cumbersome, and there are certain difficulties

Secondly, on the seabed of thousands of meters, it is difficult to ensure the accuracy of the sinking position for a single barrel sinking. Difficult to control and may require long offshore construction times

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