Submarine natural gas collection device and method with built-in buoyancy tank hot water heating wall surface

Abstract

The invention discloses a seabed natural gas collecting device using hot water in built-in buoyancy tanks for wall surface heating, belonging to the technical field of natural gas collection. The seabed natural gas collecting device comprises a mother ship; the mother ship is provided with a natural gas collecting and storing unit; the natural gas collecting and storing unit is connected with the top of a natural gas collecting cover through a gas extracting pipeline; the natural gas collecting cover is connected with the bottom of the mother ship through a waterproof pipe; the gas extracting pipeline is arranged in the waterproof pipe; the periphery of the bottom of the natural gas collecting cover is provided with an anchoring system; the bottom of the natural gas collecting cover is provided with a pressure adjusting system; the outer wall of the bottom of the natural gas collecting cover is provided with a propulsion system; the sidewall of the natural gas collecting cover is provided with a density adjusting system; and a temperature adjusting system and a stirring system are arranged in the natural gas collecting cover. The seabed natural gas collecting device mainly overcomes the problems of loss and leakage of natural gas in decomposition, collection and exploitation of natural gas hydrate in a seabed.

Description

technical field [0001] The invention relates to the technical field of natural gas collection, in particular to the seabed natural gas hydrate collection technology. Background technique [0002] Submarine natural gas hydrate is a crystal formed by the combination of methane gas and water molecules in the low-temperature and high-pressure environment of the seabed. It is a clean energy with huge reserves, and it is expected to replace oil and coal as the main energy source. Gas hydrates are widely distributed in seabed sediments, and have the characteristics of large reserves, weak cementation, and poor stability. Once the temperature and pressure conditions in the area change, it may cause a large amount of decomposition, gasification and free release of seabed gas hydrates. [0003] Since natural gas hydrate is mainly decomposed into methane gas and water, however, methane gas is a greenhouse gas, and a large amount of release into the atmosphere will cause the greenhouse ...

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Problems solved by technology

[0006] The object of the present invention is to: aim at the above existing problems, provide a seabed natural gas collection device and method with built-in buoyancy tank hot water heating wall surface, mainly solve the natural gas hydrate in the seabed mud bed, in the process of decomposing, collecting and exploiting , will not cause the problem of the escape and leakage of natural gas. The present invention breaks through the conventional thinking mode and skillfully uses pressure regulation to form a negative pressure and temperature regulation system to increase the temperature, so as to promote the decomposition of natural gas hydrate in the seabed mud bed, which is beneficial to the seabed natural gas. The exploitation of hydrates will greatly increase the recovery rate of natural gas, and provide a new direction for the exploitation of natural gas hydrates on the seabed; it can be seen that the present invention can ensure stable production through the control of density, pressure and temperature, and the natural gas collection is convenient and efficient. High, can be reused many times

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