Title: A comparative study of the characteristics of coalbed methane reservoirs in the Zhina region, Guizhou Province and the Southern Qinshui Basin, Shanxi Province, China

Authors: Song Li; Dazhen Tang

Addresses: The Coalbed Methane Reservoir Laboratory, National Engineering Center, China University of Geosciences, Beijing 100083, China ' The Coalbed Methane Reservoir Laboratory, National Engineering Center, China University of Geosciences, Beijing 100083, China

Abstract: In order to explore the coalbed methane recovery potential of the Zhina region in the Southwest China, this paper compared the physical properties of coal reservoirs in the Zhina region and the successfully developed Southern Qinshui Basin. The results show that the pore structures of the coal samples in the two areas are dominated by adsorption pores, which is favourable for the accumulation of CBM. However, coal reservoir in the tectonically stable Southern Qinshui Basin has better homogeneity, while coal reservoir in the tectonic-intense Zhina region has higher heterogeneity. In addition, coal in the Southern Qinshui Basin which is mainly dominated by fresh-water swamp and forests swamp facies has high vitrinite contents, and better adsorption capacities. Moreover, coal reservoir affected from the whole-region magmatic metamorphism in the Southern Qinshui Basin has better physical property and homogeneity than coal reservoir in the Zhina region that only regionally affected by magma metamorphism. [Received: February 19, 2012; Accepted: July 15, 2012]

Keywords: adsorption capacity; seepage capacity; high rank coal; coal reservoirs; China; coalbed methane reservoirs; coalbed methane recovery; pore structure; regional comparison.

DOI: 10.1504/IJOGCT.2014.057790

International Journal of Oil, Gas and Coal Technology, 2014 Vol.7 No.1, pp.95 - 113

Received: 21 Feb 2012
Accepted: 15 Jul 2012
Published online: 24 May 2014 *

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