The mercury isotope signatures of coalbed gas and oil-type gas: Implications for the origins of the gases | |
Shunlin Tang; Yuping Zhou; Xiaojie Yao; Xinbin Feng; Zhaopeng Li; Gaoen Wu; Zhu Guangyou | |
刊名 | Applied Geochemistry |
2019 | |
卷号 | 109页码:1-9 |
关键词 | Mercury mercury Isotopes Gas Genesis coalbed Gas oil-type Gas |
英文摘要 | The concentration of mercury vapor (elemental mercury, Hg0 ) in natural gases has been used to differentiate between coalbed gas and oil-type gas. However, the concentrations of Hg0 in coalbed gas and oil-type gas are highly variable, and its use as a genetic indicator is problematic. Here, for the first time, we report significant differences in the mass-dependent fractionation (MDF, measured with δ202Hg) and the mass-independent fractionation (MIF, measured with Δ199Hg, Δ200Hg and Δ201Hg) of Hg0 isotopes between coalbed gas and oil-type gas. Coalbed gas has an extremely negative δ202Hg (−5.8‰ to −3.08‰) and negative Δ199Hg (−0.19‰ to −0.01‰) relative to the assumed source, which is Permian coal from the Henan Province, China. Oil-type gas is characterized by less negative δ202Hg (−3.08‰ to −0.77‰) and positive Δ199Hg (0.06‰–0.30‰) relative to its E2-3s source rocks in the Liaohe oilfield (dark mudstones: δ202Hg = −1.96‰ to −2.48‰, Δ199Hg = 0.09‰–0.17‰). This significant difference in the MIF can be used to distinguish between coalbed gas and oil-type gas. Notably, the Δ200Hg values of our samples are as high as 0.15‰. We suggest that significant Hg0 MDF might occur during the formation of coalbed gas, but not during the formation of oil-type gas. This study highlights the potential of Hg0 isotopes as proxies for the source of natural gases. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10601] |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 2.Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan province, 454000, China 3.Department of Petroleum Geology, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China |
推荐引用方式 GB/T 7714 | Shunlin Tang,Yuping Zhou,Xiaojie Yao,et al. The mercury isotope signatures of coalbed gas and oil-type gas: Implications for the origins of the gases[J]. Applied Geochemistry,2019,109:1-9. |
APA | Shunlin Tang.,Yuping Zhou.,Xiaojie Yao.,Xinbin Feng.,Zhaopeng Li.,...&Zhu Guangyou.(2019).The mercury isotope signatures of coalbed gas and oil-type gas: Implications for the origins of the gases.Applied Geochemistry,109,1-9. |
MLA | Shunlin Tang,et al."The mercury isotope signatures of coalbed gas and oil-type gas: Implications for the origins of the gases".Applied Geochemistry 109(2019):1-9. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论