The main controlling factors of coal seam injection heat enhanced extraction technology

Abstract In order to improve the gas extraction rate in low permeability coal seam, the coal injection thermal theory was proposed. Coal seam heat injection technology is still at the stage of theoretical and laboratory research. Thermal coal injection process is a very complex multi-physics couplin...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 781; no. 2; pp. 22071 - 22075
Main Author Jia, Quanmin
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2021
Subjects
Coal
Coal injection
Coupling
Heat transfer
Injection
Permeability
Rock mechanics
Seepage
Technology
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Summary:Abstract In order to improve the gas extraction rate in low permeability coal seam, the coal injection thermal theory was proposed. Coal seam heat injection technology is still at the stage of theoretical and laboratory research. Thermal coal injection process is a very complex multi-physics coupling problem, involving factors such as temperature, humidity, pressure and other factors on the effect of heat injection. According to the research results of seepage mechanics, heat transfer, rock mechanics and predecessors, the main controlling factors of the coal seam heat injection process are analyzed in terms of gas adsorption, desorption and coal seam permeability, and a multi-field coupling model for coal seam heat injection is analyzed and the solution of the above provides research ideas.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/781/2/022071