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Ultra-deep coal underground gasification technology

An underground gasification and ultra-deep technology, applied in coal gasification, underground mining, mining fluids, etc., can solve problems such as inability to mine, low mining efficiency, and long mining time

Active Publication Date: 2010-10-20
邓惠荣
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Problems solved by technology

[0002] At present: Coal mining is mainly done by open-pit mining, which has many unfavorable factors such as long mining time, low mining efficiency, and prone to mine disasters, and the processing of coal after mining into gas is harmful to the environment; therefore, coal gas in coal fields Gasification can reduce the environmental pollution caused by coal mining and reprocessing; at present, in my country, more than 1 trillion tons of deep coal fields below 1,000 meters are basically unable to be mined, and no one has researched and developed underground gasification technology for deep coal.

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  • Ultra-deep coal underground gasification technology

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[0005] The present invention is further described below: ultra-deep coal underground gasification technology: at first, carry out precise detection according to coal burial depth and delineated shape, design a main axis in the coal seam of deep gasification according to geological conditions and structure to be infinitely long and Continuously extend and infinitely extend the gasifier and gas storage channel cavity; among them: design a gas production vertical shaft and a horizontal well every 300 meters long, and burn a deep channel; after the combustion gas storage channel combustion furnace is established, every A 1,500-meter-long horizontal well is drilled at 50 meters, and every 300 meters is a horizontal section, which is infinitely enlarged according to the coal seam. Installed in the horizontal well: high temperature resistant movable retractable igniter, steam injection water pipe, special pipeline device for oxygen enrichment injection; then use butane and electric ig...

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Abstract

The invention relates to a super deep coal underground gasification technology, comprising: firstly detecting according to a coal buried depth and a delineation shape, designing a main axial line extending continuously in a deep gasified coal bed according to geological conditions, wherein a vertical shaft and a horizontal well are arranged every 300m in the main axial line; burning a deep passage; igniting to bidirectionally simultaneously burn by adopting butane and electricity through the pressure of an air compressor so as to generate a coal gas. The ultra-deep coal underground gasification technology carries out deep underground gasification by utilizing the shallow coal underground gasification technology and the oil extraction vertical well and horizontal well combination technology, enables the deep coal to be sufficiently utilized and the part of coal resources to play a role, has low extraction cost and thoroughly realizes the energy greening and the zero emission through a poly-generation recovery and reinjection technology.

Description

technical field [0001] The invention relates to an underground coal gasification technology, in particular: an ultra-deep underground coal gasification technology for deep (800-3000 meters) underground gasification by utilizing shallow coal underground gasification technology combined with oil production vertical wells and horizontal wells. Background technique [0002] At present: Coal mining is mainly done by open-pit mining, which has many unfavorable factors such as long mining time, low mining efficiency, and prone to mine disasters, and the processing of coal after mining into gas is harmful to the environment; therefore, coal gas in coal fields Gasification can reduce the environmental pollution caused by coal mining and reprocessing; at present, in my country, more than 1 trillion tons of deep coal fields below 1,000 meters are basically unable to be mined, and no one has researched and developed underground gasification technology for deep coal. . Contents of the in...

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Application Information

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IPC IPC(8): E21B43/295E21B43/30
Inventor 邓惠荣
Owner 邓惠荣
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