Exploitation system for seabed natural gas hydrate and exploitation method

A mining method and coiled tubing technology, applied in mineral mining, earth square drilling, special mining, etc., can solve the problem that seabed combustible ice cannot be put into large-scale commercial mining, achieve commercial mining, high mining efficiency, and solve pollution effect

Inactive Publication Date: 2018-08-10
SHANGHAI FB OIL EQUIP TECH
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  • Abstract
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Problems solved by technology

[0011] Based on the above reasons, seabed combustible ice cannot be put into large-scale commercial mining so far.

Method used

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  • Exploitation system for seabed natural gas hydrate and exploitation method
  • Exploitation system for seabed natural gas hydrate and exploitation method

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. As used herein, "first", "second" and similar words do not imply any order, quantity or importance, but are used only to distinguish different components. "Compr...

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Abstract

The invention discloses an exploitation system for seabed natural gas hydrate. The exploitation system comprises a natural gas hydrate seabed temporary storage container, wherein the natural gas hydrate seabed temporary storage container is connected with the lower end of a composite material continuing tube; the composite material continuing tube passes through a continuing tube injection liftingmechanism; a continuing tube withdrawing mechanism is fixedly connected with the upper end of the composite material continuing tube; the composite material continuing tube is wound on a winding discof the continuing tube withdrawing mechanism; a natural gas hydrate mixture separation container is connected with the upper end of the composite material continuing tube through a natural gas hydrate conveying pipeline; the continuing tube injection lifting mechanism, the continuing tube withdrawing mechanism and the natural gas hydrate mixture separation container are arranged on a natural gashydrate offshore exploitation platform; the natural gas hydrate seabed temporary storage container is connected with an isolation cover through a conveying pipeline; the isolation cover is fixedly connected with a seabed excavator. By adopting the exploitation system, complete exploitation of seabed natural gas hydrate can be achieved, and the seabed natural gas hydrate can be possibly utilized asnovel energy by human beings. The invention further discloses an exploitation method for the seabed natural gas hydrate.

Description

technical field [0001] The invention relates to a mining system for seabed combustible ice. The invention also relates to a mining method of seabed combustible ice. Background technique [0002] Combustible ice, that is, natural gas hydrate (Natural Gas Hydrate), with the molecular structure of CH4 H2O, is a solid cage-like crystalline compound formed by mixing water and natural gas under medium-high pressure and low temperature conditions under certain conditions. It is distributed in the deep sea Permafrost on the seabed or on land. Because it looks like ice and can burn when exposed to fire, it is called "combustible ice". [0003] The formation of combustible ice must meet at least three basic conditions: temperature, pressure and raw materials. First of all, combustible ice is formed below 0°C, and it will decompose once it exceeds 20°C, and the seabed temperature is generally maintained at about 2-4°C, which is most suitable for the formation of combustible ice; sec...

Claims

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Application Information

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IPC IPC(8): E21C50/00
CPCE21C50/00
Inventor 冯国竟吴盼
Owner SHANGHAI FB OIL EQUIP TECH
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