摘要
指出不同显微组分具有不同的化学结构组成,壳质组具有最轻的碳同位素组成,芳构化程度最高的惰质组具有最重的碳同位素组成,因此产物甲烷的碳同位素组成具有半丝质组>丝质组>镜质组>壳质组的规律。结合不同显微组分产气率的特征(壳质组>镜质组>半丝质组>丝质组),计算了煤系源岩显微组分的差异对在塔里木盆地库车坳陷和吐哈盆地煤成气甲烷碳同位素可能产生的影响。认为这种显微组分组成上的差异不足以对所产生的天然气甲烷碳同位素产生影响。
Based on the analysis of desorption velocity and the capable desorption quantity of coalbed methane, we systemically discussed the desorption characteristics of coalbed methane of Panzhuang Coal mine and analyze the relationship between desorption velocity and desorption time , and the relationship between the capable desorption quantity and the burial depth of coal reservoir. In the area, there is quite high capable desorption rate in the middle area of the first mine field, most area of the fifth coal of the second mine field and the north area of the third coal of Panzhuang Coal mine, which is propitious to the exploitation of coalbed methane. In the layer region, the capable desorption rate mostly takes On a negative relationship with the increase of burial depth of coal reservoir, but the data is comparatively discrete.
出处
《天然气地球科学》
EI
CAS
CSCD
2005年第6期792-796,共5页
Natural Gas Geoscience
基金
国家"973"项目(编号:2001CB209102)资助
关键词
显微组分
产气率
甲烷碳同位素组成
化学结构
Coalbed methane
Desorption characteristics
Desorption velocity
Desorption rate..
