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Solid-state combustible ice exploitation method

A mining method and solid-state technology, applied in ground mining, earth square drilling, underground mining, etc., to achieve the effect of low cost, simple and easy method, and suitable for industrialization

Active Publication Date: 2015-02-11
BEIJING START TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a solid-state mining method for combustible ice to solve the technical problem of large-scale and low-cost and simple and easy mining of combustible ice

Method used

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Embodiment Construction

[0016] The present invention is based on the principle of volatility of combustible ice, which is sealed and mined. As a solid, combustible ice will volatilize under normal temperature and pressure. It has infinite volatilization space when placed in an open style, and the volatilization will not be saturated until all volatilization is completed. If it is stored in a relatively airtight device, it is related to the volume of the container containing combustible ice excluding the volume occupied by combustible ice. When it reaches saturation, the volatilization volume will not increase. So if the volume other than the volume occupied by combustible ice is zero, then combustible ice will not volatilize even at ambient temperature and pressure where it can volatilize.

[0017] In the process of implementing this patent, for land mining, firstly drill a hole from the ground to a combustible ice layer with a diameter of 20 cm to 60 cm; drill the hole into the combustible ice layer, a...

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Abstract

The invention discloses a solid-state combustible ice exploitation method. The solid-state combustible ice exploitation method comprises the following steps of: firstly, carrying out well drilling to a combustible ice layer; then chambering to obtain a hole with a needed size, and loading a protection pipe with a heat-preservation layer; distributing a device for sealing and packaging combustible ice, a combustible ice conveying mechanism and a mechanical hand system through the protection pipe; digging the combustible ice layer and sealing the combustible ice in a digging position by a sealing device, wherein in a sealing process, an inner cavity of the sealing device is filled with by the combustible ice and then is rapidly sealed in a gap-free manner; and sending the explored combustible ice to a wellhead in a sealed state in a spiral ascending manner, a lifting manner or a conveying-belt conveying manner. According to the combustible ice solid-state exploitation method disclosed by the invention, the combustible ice can be explored in a large scale and with a low cost by a simple and feasible technology.

Description

Technical field [0001] The invention relates to a mining technology for combustible ice. Background technique [0002] Combustible ice is methane hydrate. One cubic meter of solid combustible ice can vaporize more than 160 cubic meters of methane at normal pressure and room temperature. So far, it has been 500-700 meters deep under the ocean surface and under the permafrost on the land. A large amount of combustible ice was found. But the mining of combustible ice is a difficult problem. Up to now, Russia has used hot gas injection to gasify underground solid combustible ice to produce gaseous methane for testing, but the cost is high and higher than the current selling price. Of course, testing is very necessary. [0003] A large amount of combustible ice has been found under the surface of the South my country Sea and underground in Qinghai. The reality of energy shortages in the world has caused major countries to carry out research on combustible ice mining. my country has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16
Inventor 李光武
Owner BEIJING START TRADE