Deep sea natural gas hydrate exploitation control method

Abstract

The invention provides a deep sea natural gas hydrate exploitation control method. By exploitation of natural gas hydrates on the basis of a solid exploitation method, the method includes: crushing natural gas hydrate reserves into particles; performing solid-liquid two-phase hydraulic lifting through ejected seawater; keeping a stable state of the natural gas hydrates through a temperature and pressure maintaining control device arranged in a vertical exploitation pipeline; lifting through a closed pipeline to the sea surface to realize separation treatment. The method has advantages that safety and quickness in delivery of the deep sea natural gas hydrates in the exploitation pipeline can be realized, and potential hazards caused by decomposition of the natural gas hydrates in the high-temperature exploitation pipeline are avoided.

Description

[0001] Technical field [0002] The invention relates to a deep-sea natural gas hydrate exploitation method, which belongs to the field of natural gas hydrate exploitation. Background technique [0003] Since the first discovery of gas hydrate in the laboratory by Davy in England in 1810 and the artificial synthesis of gas hydrate by Villard in 1888, human beings have never stopped the research and exploration of gas hydrate. In the past 200 years, the research on gas hydrates in the world has roughly gone through three stages. The first stage is from the synthesis of chlorine gas hydrate by Davy in 1810 and the official naming of gas hydrate in this year and the writing of books to the early 1930s. In the past 120 years, the research on gas hydrate has only stayed in the laboratory, and there are many disputes. Since Hammerschmidt of the United States published relevant data on hydrate-caused gas pipeline blockage in 1934, people noticed the industrial importance of gas hyd...

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Problems solved by technology

Scientists pointed out that it should be feasible to obtain traditional gas deposits in the deep sea by means of drilling, but because of the instability of the continental slope and the long pipelines that need to be laid, there are technical and economic problems. have the potential to make it difficult to exploit gas hydrate resources using this method

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