Water oil storage device with mooring function and assembly method thereof

Abstract

The invention relates to a water oil storage device with a mooring function and an assembly method thereof. The oil storage device is characterized by comprising an oil storage tank, a mooring system, an output system and an oil transportation system; the oil storage tank comprises a buoyancy cabin, an oil storage cabin and a ballast cabin which are arranged from top to bottom; a top oil inlet is arranged in the side wall in the upper part of the oil storage cabin, an upper oil baffle is arranged below the top oil inlet, an oil inlet is arranged in the middle part of the upper oil baffle, oil film is connected with the lower part of the oil inlet in a sealing way, and a lower oil baffle is arranged on the lower end of the oil film; a plurality of oil separation interior rings and oil separation external rings are arranged inside and outside the oil film from top to bottom at intervals; a plurality of guide rails are vertically arranged on the bottom of the upper oil baffle, and each guide rail passes through the through hole in each oil separation external ring; a plurality of top water inlets are arranged in the side wall of the oil storage cabin below the upper oil baffle; a plurality of bottom water inlets are arranged in the bottom of the oil storage cabin; the mooring system comprises a mooring buoy connected with the ballast cabin; a plurality of mooring cables are connected with the lower part of the mooring buoy; one end of an oil transportation pipe of the output system passes through the buoyancy cabin and enters into the oil storage cabin, and the other end of the oil transportation pipe is connected with a boat stopping buoy; and one end of an oil transportation pipe of the oil transportation system is connected with a seabed oil extraction system, and the other end of the oil transportation pipe is embedded into the oil storage cabin through the top oil inlet.

Description

technical field [0001] The invention relates to an oil storage device and an installation method thereof, in particular to a water surface oil storage device with a mooring function and an installation method thereof. Background technique [0002] As offshore oilfields gradually enter a period of stable production and decline, it is imperative to develop deepwater and marginal oilfields. At present, the practical problems facing our country are: deep-water oilfields are far away from the shore, and there is no mature subsea pipeline network to rely on, and oilfield operations are highly dependent on FPSO; while some isolated marginal oilfields are small in scale, and their simple production platforms do not have With a large oil storage function, it is not economical to rely on sea pipelines to send crude oil ashore. Therefore, it is necessary to establish offshore oil storage facilities. It can be seen that the offshore oil storage solution for the development of deep-wate...

AI Technical Summary

Problems solved by technology

At present, the practical problems facing our country are: deep-water oilfields are far away from the shore, and there is no mature subsea pipeline network to rely on, and oilfield operations are highly dependent on FPSO; while some isolated marginal oilfields are small in scale, and their simple production platforms do not have Larger oil storage function, it is not economical to rely on sea pipelines to transport crude oil to shore, so it is necessary to establish offshore oil storage facilities

Its shortcoming is that it has high requirements on seabed soil properties and smoothness. When there are rocks or large undulations at the bottom of the seabed, it is difficult to meet the structural safety requirements. In addition, the amount of structural materials is large and cannot be recycled, so it is only suitable for large reserves. Large oil field; there are also great difficulties in underwater repair and maintenance

3) Surface oil storage is flexible, recyclable, and widely used, but it faces three difficulties: first, the displacement of crude oil varies greatly during loading and unloading, and the ballast needs to be adjusted at any time. In addition, there are hidden dangers in stability and safety; If a floating body with a large waterline surface is used, it is easily affected by environmental loads. If a floating body with a deep draft is used, in order to overcome the internal and external pressure difference, the floating body needs to be reinforced with a large number of structures, and the amount of materials is significantly increased; the third is the relationship between the oil storage tank and the air In contact with each other, it is difficult to prevent fire and riot; therefore, surface oil storage needs to effectively solve the above three difficult problems

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