Abstract
CO2injection into coal seams can not only enhance coalbed methane recovery (ECBM), but also reduce greenhouse gas emission into atmosphere. This paper describes some factors affecting CBM primary production, ECBM recovery and CO2sequestration in coal seams; and calculates CBM recovery quantity with primary production, the ECBM recovery potential quantity and CO2sequestration capacity in coal seams of West Henan Province. The results show that CBM primary and ECBM recovery potential quantity are estimated to be over 2147.278 and 1656.217 Gm3. The prediction also indicates that CO2sequestration potential quantity is about 3233.79 Gm3.
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