Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method

Abstract

The invention belongs to the technical field of ocean engineering and relates to a cylinder oil storage device arranged at the bottom of deep sea. The oil storage device is a double-layered cylinder form steel structure without a bottom, comprising a double-layered circular deck as well as an internal toroidal steel plate and an external toroidal steel plate in the height direction; a bottom plate circular ring is arranged at the bottom of the toroidal steel plates; radial and toroidal sealed water tight bulkheads, radial human bulkhead and radial steel aggregates are arranged between the internal and external plates of the deck; the toroidal sealed water tight bulkhead and the steel aggregate in height direction are arranged between the internal and external toroidal steel plates; the steel aggregate is welded to the internal, external plates of the toroidal steel plates and the sealed water tight bulkheads; the deck and the internal plate of the toroidal steel plates form a water tight welded steel plate structure; an oil isolating system comprises an oil film, an oil isolating plate and an oil separating interlayer. The inside of the oil storage device can be communicated with the outside so that the device does not need to bear enormous pressure at the bottom of the sea, prevents the produced crude oil from polluting sea water and sea soil and is safe and practical.

Description

technical field [0001] The invention belongs to the field of marine engineering, and in particular relates to a novel cylindrical oil storage device placed on the bottom of the deep sea, which is suitable for storing crude oil in deep sea development. Background technique [0002] Oil and natural gas occupy a very important position in the energy structure. After long-term and large-scale exploitation of onshore oil and gas resources, worldwide oil and gas exploration and development have moved to the vast ocean, and gradually formed a new field of energy industry with high investment, high risk, and high-tech intensive. With the development of offshore oil development from offshore to far sea and deep sea, the storage of crude oil has also developed from onshore oil storage to offshore oil storage. Offshore oil storage can be divided into three main methods: above-water oil storage, surface oil storage and underwater oil storage. [0003] Oil storage on water refers to se...

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Problems solved by technology

[0008] The present invention proposes a large-scale oil storage device in the form of a cylinder suitable for deep-sea seabeds and its use method, to overcome the problems of insufficient strength of the deep-sea oil storage device and the pollution of seawater by the produced crude oil, and to meet the short-term oil storage needs of offshore platforms

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