The origin and formation of CO2 gas pools in the coal seam of the Yaojie coalfield in China
The origin and formation of CO2 gas pools in the coal seam of the Yaojie coalfield in China
复制标题
我国姚街煤田煤层CO2气藏的成因与形成
DOI：
10.1016/j.coal.2010.11.011
复制
发表时间：
2011-02
影响因子：
5.6
通讯作者：
Wang, Lei
中科院分区：
文献类型：
--
作者：
Li, Wei;Cheng, Yuan-Ping;Wang, Lei
窑街煤田2号煤层CO_2浓度较高。在煤矿开采过程中，发生了多起瞬间的CO2突出事件。东部煤田CO2浓度范围为18.79%~96.6%。δ_(13)CO_2值主要在−_(5.0)‰~+1.0‰(Pdb)范围内，表明其为无机成因。3He/4He比值为(0.6~2 5.9)×10−8，R/Ra为0.0042~0.185，为壳源CO2气体的特征。认为F19韧性-脆性剪切带的动力-热变质作用导致了基底大理岩的CO2释放，显示了窑街煤田CO2的无机来源。区域地质演化和多周期的F19断裂运动控制着窑街煤田CO2气藏的形成、运移和聚集，也控制着CO2气藏的发育。F19断裂在CO2形成过程中对天然气的生成、输导和封存起到了多方面的作用。CO2进入煤层后，由于一系列物理和化学作用，发生了CH4的置换、碳酸盐的生成和煤的孔结构变化。
High concentrations of CO2have been observed in the No. 2 coal seam in the Yaojie coalfield. A number of instantaneous CO2outbursts occurred during coal mining. The CO2concentration range in the eastern coalfield is 18.79 to 96.6%. The δ13CCO2values are mainly in the range of −5.0‰ to +1.0‰ (PDB), suggesting an inorganic origin of CO2. The3He/4He ratios are (0.6–25.9)×10−8, and the R/Ra is 0.0042–0.185, which is a characteristic of crust-derived CO2gas. The dynamic-thermal metamorphism of the F19 ductile-brittle shear zone is believed to result in the release of CO2from basement marble formations, which show an inorganic source of CO2in the Yaojie coalfield. The regional geological evolution and multi-periodical F19 fault movement control the formation, migration, and accumulation of the CO2, in addition to the development of CO2gas pools in the Yaojie coalfield. The F19 fault played multiple roles in the generation, transport, and sequestration of gas during the CO2formation. The displacement of CH4, carbonate generation, and pore structure transformation of coal due to a series of physical and chemical effects occurred after CO2flux into the coal seams.
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影响因子：
5
作者：
I. Hutcheon;H. Abercrombie;H. Krouse
通讯作者：
I. Hutcheon;H. Abercrombie;H. Krouse
DOI：
--
发表时间：
2001
期刊：
Rock and Mineral Analysis
影响因子：
--
作者：
Ye Xian
通讯作者：
Ye Xian
影响因子：
5.6
作者：
S. Mazumder;K. Wolf
通讯作者：
S. Mazumder;K. Wolf
影响因子：
1.8
作者：
Gao Yu
通讯作者：
Gao Yu
影响因子：
5.7
作者：
Ye Xianren;Tao Mingxin;Yu ChuanAo;Zhang Mingjie
通讯作者：
Ye Xianren;Tao Mingxin;Yu ChuanAo;Zhang Mingjie