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Study on the difference of gas adsorption amount of coal reservoirs in different areas based on principal component analysis
Author: LYU Baoyan, YANG Hongmin,CHEN Liwei, FAN Shangchong Time: 2021-03-10 Counts:

doi:10.16186/j.cnki.1673-9787.2019060046

Received:2019/06/18

Revised:2019/07/26

Published:2021/03/15

Study on the difference of gas adsorption amount of coal reservoirs in differentareas based on principal component analysis

LYU Baoyan1, YANG Hongmin1,2, CHEN Liwei1,2, FAN Shangchong1

1.School of Safety Science and Engineering Henan Polytechnic University Jiaozuo  454000 Henan China;2.Engineering Research Center of the Ministry of  Education for Coal Mine Disaster Prevention and Rescue and Disaster Relief Jiaozuo  454000 Henan China

Abstract:In order to accurately and effectively predict the gas adsorption amount of coal reservoirs the main components of the coalbed methane block in Qinshui basin and the eastern margin of the Ordos basin in China were studied. The principal component analysis method was used to determine the main components of the factors affecting the gas adsorption amount of coal reservoirs. Then by using the principal components a model of gas adsorption amount of coal reservoir was established. The principal component analysis was preferred by comparison of various dimensionality reduction methods. The results showed that four principal components were extracted from the eight indicators affecting the gas adsorption amount of coal reservoirs and the information interpretation of the four principal components to the original indicator system reached 86. 804% There were significant differences in gas adsorption amount of coal reservoirs in different blocks among them temperature pressure moisture and coal rock micro-components played a decisive role The predicted values of gas adsorption amount of coal reservoirs in different blocks were not much different from the actual measurements. The engineering requirements could be basically met and the unknown risks of underground mining were extremely effectively reduced which provided theoretical basis and guidance for the research and development of coalbed methane in China.

Key words:Qinshui basin;eastern margin of Ordos basin;coal reservoir;principal component analysis;gas adsorption amount

 基于主成分分析法的不同地区煤储层瓦斯吸附量差异性研究_吕宝艳.pdf

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