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A kind of mining method of seabed combustible ice

A mining method, seawater technology, used in the production of fluids, earth-moving drilling, wellbore/well components, etc.

Active Publication Date: 2018-01-30
迈瑞尔实验设备(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no mature large-scale commercial mining method in various countries at present

Method used

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  • A kind of mining method of seabed combustible ice

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Comparison scheme
Effect test

Embodiment 1

[0033] The resistance overcome by the axial flow pump 6 of the present invention is mainly pipeline friction and the static pressure difference above the sea surface, so the separation container 7 on the mining platform 9 floating on the sea surface 10 should be as low as possible. When the separation container 7 is 5 meters away from the sea surface 10 and the seabed excavation surface is 500 meters away from the sea surface, the five axial flow pumps 6 with rotating speeds between 400 and 600 rpm can realize the flow velocity requirement in the cylinder pipe 4 . The inner diameter of the barrel pipe 4 matches the capacity of the mechanical excavator 2, and the combustible ice content in the initial fluid is between 10% and 60%. The temperature of the liquid phase in the separation container 7 is maintained at 25-40° C., and the residence time of the liquid phase in the separation container 7 is greater than 10 minutes, so that the residual combustion ice can be completely dec...

Embodiment 2

[0035] When the separation container 7 is 5 meters away from the sea surface 10 and the seabed excavation surface is 1000 meters away from the sea surface, nine axial flow pumps 6 with rotation speeds between 400 and 600 rpm can realize the flow velocity requirements in the cylinder pipe 4 . The inner diameter of the barrel pipe 4 matches the capacity of the mechanical excavator 2, and the combustible ice content in the initial fluid is between 15% and 60%. Maintain the temperature of the liquid phase in the separation container 7 at 25-40° C., and the residence time of the liquid phase in the tank is greater than 10 minutes, so that the residual combustion ice can be completely decomposed.

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Abstract

The invention relates to a mechanical mining method of marine combustible ice, which refers to a method conceived by utilizing the properties of combustible ice, marine characteristics and the principles of fluid mechanics, and adopts mechanical excavation, liquid flow lifting and separation, and sea surface mining platform collection methods to realize mining. It can operate in shallow sea or deep sea, which is quite different from existing decompression, heating or chemical methods. It has the characteristics of low energy consumption, high efficiency and no leakage.

Description

technical field [0001] The invention relates to a method for mining combustible ice on the seabed. The combustible ice is excavated by a mechanical tunneling machine, and several axial flow pumps are installed to drive the seawater flow in the cylinder pipe, and the combustible ice is carried up, and the temperature rises while the pressure increases. As it descends, the combustible ice decomposes. Finally, the gas-liquid mixture flows to the separation container on the sea surface operation platform. The collected gas is simply processed and transported to the destination. It can be applied to the mining of combustible ice in shallow seas and deep seas. Background technique [0002] It is generally believed that the exploration and development of combustible ice is a systematic project involving many disciplines, such as marine geology, geophysics, geochemistry, fluid dynamics, thermodynamics, drilling engineering, etc., and requires the cooperation of experts in various fie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00E21B43/34
Inventor 朱博源
Owner 迈瑞尔实验设备(上海)有限公司
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