Device for combined mining of methane, volatile matters and carbon in coal field or oil gas in oil field and mining method thereof

Abstract

The invention relates to a device for the combined mining of methane, volatile matters and carbon in a coal field or oil gas in an oil field, which mainly comprises a steam injection well borehole or an extension-type steam injection extraction well borehole and a production well borehole or a production extraction well borehole. The upper end part of the well borehole is provided with a control device, an extraction device and a steam converter. The lower end part and the medium part as well as the lower part of the well are provided with space for a cutting section layer, or the cutting section layer space arranged on the lower end part of the well is internally provided with a steam heater or a catalytic heater which are used for conducting high-temperature high-pressure steam heating or catalytic heating to the coal layer or the oil layer, thus ensuring that the methane and the volatile matters in the coal field or the oil gas in the oil field are swiftly extracted to the ground by the extracting device. The device has the advantages of peculiar structure, advanced technology, simple and convenient mining and high extraction efficiency, and the device and the mining method have low investment and operation fee and low cost, thus being widely applied to the mining of the coal field and the oil field and the metallic minerals or the non-metallic minerals thereof.

Description

technical field [0001] The present invention relates to underground mineral resources, especially the field of coalfield or oilfield mining, in particular to coalfield methane gas (also known as coalbed methane or gas, whose main components are methane gas), volatile matter and charcoal Or oil field oil and gas facilities and devices and their exploitation methods. Background technique [0002] Underground mineral resources, especially raw coal and oil, are the two pillars of energy in the world today, with large reserves and wide distribution. For example, coal is a solid mineral fuel with abundant reserves in the world, and it is widely distributed in countries all over the world: China, North America, central Europe, Australia, South Africa, Russia and other countries and regions have a large amount of storage and mining, usually in the form of solid raw coal. A large amount of coalbed methane (or methane gas or gas) accompanies the raw coal in the original coalfield. The...

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Chinese patent CN1563664A discloses a method of mining coalbed methane by excavating well shafts, coal

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