Combustible ice drilling, mining and gasification separation integrated mining device and combustible ice drilling, mining and gasification separation integrated mining method

Abstract

The invention relates to a combustible ice drilling, mining and gasification separation integrated mining device and a combustible ice drilling, mining and gasification separation integrated mining method. The combustible ice drilling, mining and gasification separation integrated mining device is formed by a separation short joint, a suction short joint, a bottom drill bit, a drill cylinder, a hot water pipe and a water injection pipe, wherein the suction short joint is connected with the bottom drill bit; the drill cylinder is connected between the suction short joint and the separation short joint; the length of the drill cylinder is determined according to needs; the water injection pipe and the hot water pipe penetrate through the drill cylinder and the two short joints. According to the combustible ice drilling, mining and gasification separation integrated mining device disclosed by the invention, integration of drilling, mining and gasification separation of combustible ice can be realized through the cooperation of five links of cutting and crushing of the bottom drill bit, water injection and fluidization of the water injection pipe, hot water injection, heat transfer and energy transfer of the hot water pipe, suction of the suction short joint and separation of the separation short joint; a drilling technology, a mining technology and a separation technology are combined, a process is simplified, the period is shortened, the efficiency is increased, and the cost and the risk are reduced.

Description

technical field [0001] The invention belongs to the technical field of seabed combustible ice mining, and in particular relates to an integrated mining device and method for combustible ice drilling and mining, gasification and separation. technical background [0002] Combustible ice is a cage-shaped crystal formed by methane-based natural gas and water under low-temperature and high-pressure environments. It has high density, high calorific value, and flammable properties. It is mainly stored in the seabed and land permafrost at high latitudes. , about 95% are stored in the deep water area of ​​0-1100m below the seabed with a water depth greater than 300m, and the shallow fine-grained fracture type and dispersed type are the main types. As a green and clean energy source, combustible ice has attracted worldwide attention since its discovery. It only exists under certain temperature and pressure conditions. Once the conditions are broken, it will cause gasification and deco...

AI Technical Summary

Problems solved by technology

However, when the seabed tunneling vehicle or crusher breaks the combustible ice, it is easy to cause the stratum to collapse, causing the tunneling vehicle or crusher to crash. The cost of salvage and maintenance is high, and it also seriously affects the progress of the operation.

In addition, when the lift pump sucks seawater to lift, the seawater carries combustible ice and formation sand particles to lift together, and is separated at the sea surface, which consumes a lot of energy and increases the load of the sea surface separator

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