Submarine flammable ice mining method and device

Abstract

The invention discloses a submarine flammable ice mining method and device and relates to the technical field of flammable ice mining devices. The submarine flammable ice mining method comprises the following steps: drilling a well in the sea, inserting and mounting a well guide pipe, feeding hot water in the guide pipe, at the same time draining hot water after heat exchange, and after carrying out catalytic decomposition on flammable ice, discharging the flammable ice along the guide pipe and separating the flammable ice. The submarine flammable ice mining method solves the following problem: limited by the depth of the deep sea in the traditional technology, steam is likely to condensate when discharged from the bottom of a pipe orifice; when the steam is discharged out of an outlet, the steam is in direct contact with seawater, and the heat of the steam cannot act on the flammable ice; due to self condensation and heat exchange with seawater of the steam at the outlet, the steam cannot be discharged, so that the steam is accumulated in the pipeline and affects feeding of steam later.

Description

Technical field [0001] The invention relates to the technical field of combustible ice mining devices, in particular to a method and device for mining combustible ice on the seabed. Background technique [0002] With the continuous development of economic construction, the world’s demand for energy is increasing. The global conventional oil and natural gas reserves are expected to be exhausted in the next 40 to 50 years. The energy crisis has plunged society into anxiety and is increasing the conservation economy. While building the society, the development of new energy is also an important task of contemporary society. However, the discovery of combustible ice has brought confidence to human society to overcome the economic crisis. Only now, the proven reserves of combustible ice are twice as much as the existing fossil fuels such as oil and natural gas, which can be used by human society for at least 1,000 years. [0003] Combustible ice is an ice-like solid formed by filling n...

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Problems solved by technology

[0011] Aiming at the deficiencies in the prior art, the present invention provides a seabed combustible ice mining method and device to solve the problem in the traditional technology that the depth of the deep sea is limited, and the steam is easy to condense when it is discharged from the bottom of the nozzle; the steam is discharged from the outlet When it is in direct contact with seawater, its heat cannot be applied to the combustible ice; the steam at the outlet is subject to its own condensation and heat exchange with seawater, so it cannot be discharged, so that it accumulates in the pipeline and affects the subsequent introduction of steam. The problem

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