Abstract:

Based on the controlling factors of coalbed methane(CBM), the characteristics and distribution of CBM formation in Zhungaer Basin have been analyzed，and the results reveal that Zhungaer Basin is the main coal-bearing basin in northwest China，which has the characteristics of representative basin of low-rank CBM, such as big thickness, many coal seams and low-rank coal. In Zhungaer Basin, the CBM resources are very  abundant, and CBM indication is very active either in well or on the surface of the southern edge. The  formation  models of low-rank CBM reservoir include steep slope and gentle slope in the  basin edge. Based on the analysis of tectonic and hydrologic geological characteristics of Zhungaer basin, seven CBM reservoirs are divided as follows, Urumqi-Baiyanghe CBM reservoir, South Changji CBM reservoir, Sikeshu CBM reservoir, Xiaoguai CBM reservoir, Kelamayi CBM reservoir, Wuerhe CBM reservoir, and Cainan-Dajing CBM reservoir, these areas are profitable for CBM exploration．

Key words: coalbed methane resource, low-rank coal, reservoir, Zhungaer Basin