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DOI	10.1016/j.fuel.2021.121039
	Variation characteristic and mechanism of carbon isotope composition of coalbed methane under different conditions and its tracing significance
	Tao, Mingxin; Chen, Xiangrui; Li, Zhongping; Ma, Yuzhen; Xie, Guangxin; Wang, Yanlong; Wei, Lingjun; Wang, Zuodong; Tang, Xiuyi
通讯作者	Tao, MX (通讯作者)，Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China.
发表日期	2021
ISSN	0016-2361
EISSN	1873-7153
卷号	302
英文摘要	Coalbed gas (CBG) is a form of new energy with a large resource potential. The 813C1 is an important indicator in trace CBG origins and thermal evolution degrees. However, regarding CBG 813C1 as a genetic tracer still exists uncertainty. Here, we systematically studied the distribution characteristics, variation mechanisms and applications of the 813C1 of CBG samples produced under different conditions. The study shows CBG 813C1 are highly variable and complex. The 813C1 are from - 79.5%0 to - 10.1%0, and the correlation between 813C1 and Ro is week. The 813C1 of the production gas and coal core desorption gas are stable and could be used as an effective genetic tracer. The 813C1 of the mining coal desorption gas are significantly higher than the theoretical 813C1, however, the 813C1 of the drained coalmine gas are lower, suggesting that the mining coal desorption gas represents the residual CBG, however, the drained coalmine gas represents the first desorbed CBG. Therefore, their 813C1 cannot be used as genetic tracer, but have great potential in tracing the CBG prevention condition. The mixture of secondary biogenic gas (SBG) and thermogenic gas makes 813C1 high variability. It cannot be directly used as tracer, but is of great significant in study the mixing ratios of the two kinds of gases. The main reasons for the high variability and complexity of CBG 813C1 are the isotope desorption fractionation and the mixing of SBG and thermogenic gas. This study provides a new scientific basis for geochemical tracing and resource evaluation of CBG.
关键词	SAN-JUAN BASIN ORGANIC-MATTER ILLINOIS BASIN SHALE GAS ORIGIN GEOCHEMISTRY HYDROGEN BED BIOGEOCHEMISTRY ENVIRONMENTS
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000675736100006
来源期刊	FUEL
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255042
作者单位	[Tao, Mingxin; Chen, Xiangrui; Ma, Yuzhen] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Tao, Mingxin; Li, Zhongping; Wei, Lingjun; Wang, Zuodong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Gas Geochem, Lanzhou 730000, Peoples R China; [Xie, Guangxin; Wang, Yanlong] China Coal Technol & Engn Grp Corp, Xian Res Inst Co Ltd, Xian 710077, Peoples R China; [Tang, Xiuyi] Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232000, Peoples R China
推荐引用方式 GB/T 7714	Tao, Mingxin,Chen, Xiangrui,Li, Zhongping,et al. Variation characteristic and mechanism of carbon isotope composition of coalbed methane under different conditions and its tracing significance[J]. 中国科学院西北生态环境资源研究院,2021,302.
APA	Tao, Mingxin.,Chen, Xiangrui.,Li, Zhongping.,Ma, Yuzhen.,Xie, Guangxin.,...&Tang, Xiuyi.(2021).Variation characteristic and mechanism of carbon isotope composition of coalbed methane under different conditions and its tracing significance.FUEL,302.
MLA	Tao, Mingxin,et al."Variation characteristic and mechanism of carbon isotope composition of coalbed methane under different conditions and its tracing significance".FUEL 302(2021).