Heavy draught truss type floating platform

Abstract

The invention relates to a heavy draught truss type floating platform, which is characterized by comprising a lower buoyancy tank. A square hole is arranged in the center of the lower buoyancy tank, a plurality of watertight cabins are arranged in the lower buoyancy tank at intervals, counterweights used for pressing the cabins are disposed in the watertight cabins, a heave plate which is integrally connected with the lower buoyancy tank is disposed at the bottom of the lower buoyancy tank, a plurality of through holes are disposed on the heave plate, a plurality of connecting holes are arranged on the top of the lower buoyancy tank, a space truss which is integrally welded with the lower buoyancy tank is fixedly connected to the lower buoyancy tank by the connecting holes, the top of the space truss penetrates through a square hole disposed in the center of an upper buoyancy tank, a circle of a watertight channel is disposed in the upper buoyancy tank, a plurality of watertight cabins are arranged on two sides of the watertight channel at intervals, a plurality of upright columns with large sections are arranged on the top of the upper buoyancy tank, a group of mooring ropes connected with a seabed is arranged on each upright column, and oil and gas treating modules and well drilling modules are arranged on the insides and the tops of decks. The heavy drought truss type floating platform is widely used for offshore oil exploitation.

Description

technical field [0001] The invention relates to a floating platform, in particular to a deep draft truss floating platform. Background technique [0002] With the increasing scope of ocean mining, the development of deep-water oil has become an important frontier of the oil industry. In deepwater oil and gas development, according to different oil recovery modes, it can generally be divided into dry oil recovery, wet oil recovery and dry-wet combined oil recovery. Compared with dry-type trees, wet-type trees are installed underwater, which not only has higher investment costs, but also is not conducive to adjustment and control. Especially when the oil production rate is too low or even no oil is produced, it is necessary to use the mobile drilling device to take out the underwater Christmas tree system for workover operations, which greatly increases the operating cost. Usually, the maintenance of the Christmas tree system is relatively frequent, and the maintenance cost ...

AI Technical Summary

Problems solved by technology

However, these two platforms also have their own problems and application limitations in deep water development. When the water depth exceeds 1500 meters, the cost of the tension leg platform rises sharply, and the design and installation of the tension leg are more difficult; while the deep draft single column The upper deck area of ​​the type platform is relatively small, the design is difficult, and the oil and gas processing facilities are difficult to arrange; in addition, the dry towing, righting and offshore installation of the top module require a lot of cost, and there are certain risks

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