Mining system and method for seabed combustible ice

A mining method and coiled tube technology, which are applied in the field of mining systems for seabed combustible ice, can solve the problem that seabed combustible ice cannot be put into large-scale commercial mining, and achieve the effects of solving the earth's energy shortage, realizing safe mining and high mining efficiency.

Active Publication Date: 2020-10-23
SHANGHAI FB OIL EQUIP TECH
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  • Abstract
  • Description
  • Claims
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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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  • Mining system and method for seabed combustible ice
  • Mining system and method for seabed combustible ice
  • Mining system and method for seabed combustible ice

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Embodiment Construction

[0058] 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 exploiting system for seabed combustible ice, and further discloses an exploiting method for the seabed combustible ice. The exploiting system comprises a seabed exploitingmechanism. The seabed exploiting mechanism is connected with the lower end of a composite coiled tubing through a downhole joint. The composite coiled tubing passes through a coiled tubing injection lifting mechanism. The upper end of the composite coiled tubing is fixedly connected with a coiled tubing extending-retracting mechanism. The composite coiled tubing is wound around a winding disc of the coiled tubing extending-retracting mechanism. The upper end of the composite coiled tubing is connected with a gaseous combustible ice liquefying furnace through a gaseous combustible ice conveyingpipeline. The gaseous combustible ice liquefying furnace is connected with a liquid combustible ice conveying pipeline. The coiled tubing injection lifting mechanism, the coiled tubing extending-retracting mechanism and the gaseous combustible ice liquefying furnace are arranged on a combustible ice offshore exploiting platform. According to the exploiting system, safety exploiting of the seabedcombustible ice can be achieved, and human makes it possible to take the seabed combustible ice as a new energy source for utilization; and the problem of shortage of earth energy is completely solved.

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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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/01
CPCE21B43/01E21B41/0099
Inventor 冯国竟吴盼
Owner SHANGHAI FB OIL EQUIP TECH
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