Thermal exploiting system and method for coalbed methane

A technology for thermal mining and coalbed methane, which is applied in the fields of mining fluids, earth-moving drilling, wellbore/well components, etc. It can solve the problems of high energy consumption, hidden dangers, low mining efficiency, etc., to achieve no pollution, prevent combustion and explosion, The effect of increased production pressure

Inactive Publication Date: 2017-11-24
SUZHOU UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a more efficient and safer coalbed methane thermal mining system and mining method for the problems of potential safety hazards, high energy consumption, and low mining efficiency in the existing coalbed methane mining technology

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  • Thermal exploiting system and method for coalbed methane
  • Thermal exploiting system and method for coalbed methane

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] like figure 1 , 2 As shown, the coalbed methane thermal exploitation system of this embodiment includes a set of gas injection system and a set of gas recovery system, and the gas injection system includes a gas heater 13, a booster pump 12, a high-tem...

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Abstract

The invention provides a thermal exploiting system and method for coalbed methane. The thermal exploiting system for the coalbed methane comprises a set of gas injecting system and a set of gas exploiting system; the gas injecting system comprises a gas heater, a booster pump, a high-temperature steam generator, a gas mixing box, two valves, a water storage tank, a water pumping pump and a ventilating pipeline; and the gas exploiting system comprises two gas exploiting pipelines and two valves. High temperature mixed gas is injected through the gas injecting system, heat is transferred to a coalbed, so that the temperature of the coalbed is increased to 50-80 DEG C, free energy of coalbed methane is improved and acting force between molecules is destroyed, the gas absorbed in a coalbed gap and on the surface of coal is desorbed, and the coalbed methane is obtained.

Description

technical field [0001] The invention relates to a coalbed gas thermal mining system and mining method, belonging to the field of coalbed gas mining, in particular to a system and mining method for coalbed gas thermal mining by using mixed gas. Background technique [0002] Coalbed methane refers to the hydrocarbon gas stored in coal seams with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water. It is an associated mineral resource of coal and belongs to unconventional natural gas. my country is rich in coalbed methane resources, and the total recoverable resources of coalbed methane are about 10 trillion cubic meters. However, due to the characteristics of low gas saturation, low porosity, low permeability, and low reservoir pressure in coal seams, the exploitation of coal bed methane has become very difficult. [0003] Some of the mining techniques currently in use do not...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24
CPCE21B43/24E21B43/006
Inventor 陈威周禹
Owner SUZHOU UNIV
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