STUDY ON THE GAS GENERATING ABILITY OF COAL IN DIFFERENT SYSTEMS

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  • (Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China)

Received date: 2006-12-26

  Revised date: 2007-03-14

  Online published: 2008-06-20

Abstract

In this paper, the authors simulated the gas generating ability of coal in semiopened and closed systems. The results show that there is a great difference in the gas generating process of coal in the two systems. The temperatures at which coal begins to generate gas and the gas-generating peak appears in the semi-opened system are higher than those in the closed system. The generated gas amount in the semi-opened system is less than that in the closed system at the same temperature, one reason for this is that the heavy hydrocarbons can be expelled out in the semi-opened system and can not be cracked into methane at high temperatures. The pressure can be an advantage for gas generation. The opening degree of a system has a great influence on the gas generation ability of coal.

Cite this article

MI Jing-kui;DAI Jin-xing;ZHANG Shui-chang;LI Xian-qing . STUDY ON THE GAS GENERATING ABILITY OF COAL IN DIFFERENT SYSTEMS[J]. Natural Gas Geoscience, 2007 , 18(2) : 245 -248 . DOI: 10.11764/j.issn.1672-1926.2007.02.245

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