ISSN: 0973-7510
E-ISSN: 2581-690X
The permeability of coal reservoir is the critical parameter of CBM (coalbed methane) development and mine gas control, but at present only the physical measures on increasing permeability are widely used in coal reservoir. According to the formation mechanism of biogenic methane, the author put forward an idea of microbial increasing permeability for coal reservoir. Through microbial enrichment in mine water, microscope observation, isothermal adsorption and permeability test, the results show the width and number of fracture increased significantly after microbial treatment, which indicates the effect of the microbial increasing permeability of coal reservoir. Meanwhile, the higher the original permeability of coal reservoir is, the more obvious the effect is, and low rank coal is more advantageous in that way. This paper provides an experimental support for biological technology in CBM development and the application of mine gas disaster control.
Microbe, Microbial enrichment, Coal reservoir, Permeability, Coal rank, Coalbed methane
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