NDLI: Sensitivity simulation and analysis of CO2 injection for enhanced coalbed methane recovery

Content Provider	IEEE Xplore Digital Library
Author	Lai Zhou Qiyan Feng Zhongwei Chen Jishan Liu
Copyright Year	2011
Description	Author affiliation: School of Mechanical Engineering, The University of Western Australia, Perth 6009, Australia (Zhongwei Chen; Jishan Liu) \|\| School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China (Lai Zhou; Qiyan Feng)
Abstract	Injecting CO2 into a coal seam with the purpose of enhancing desorption of coalbed methane can be applied to the long-term storage of CO2, which accompanies with complex coal gas interactions. In this study, a fully coupled coal deformation, gas flow, CH4-CO2 counter-diffusion and gas absorption/desorption finite element (FE) model was developed to investigate sensitivity of CO2 injection related parameters. Modeling results indicate that (1) CO2 injectivity is positively sensitive to injecting pressure, so trying to increase the injecting pressure within the safe pressure threshold of coal seam, is an efficient solution to improve the methane recovery efficiency; (2) Initial coal permeability has positive impact on the performance of CO2 replacing methane. Larger initial permeability accompanies with larger CO2 injectivity; (3) Increase to coal elastic modulus results in lower coal permeability and CO2 injectivity, showing that lower coal mechanical properties could be more suitable to binary gas diffusion.
Starting Page	6532
Ending Page	6535
File Size	255802
Page Count	4
File Format	PDF
ISBN	9781612847719
e-ISBN	9781612847740
DOI	10.1109/ICMT.2011.6002796
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensitivity Coal permeability Coal Carbon dioxide Permeability Sensitivity simulation Mathematical model Injectivity Equations Stress Strain Coalbed methane
Content Type	Text
Resource Type	Article

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