Water-rock interaction and methanogenesis in formation water in the southeast Huaibei coalfield, China | |
Qingguang Li; Yiwen Ju; Weiqi Lu; Guochang Wang; Bhupati Neupane; Yue Sun | |
2016 | |
Source Publication | Marine and Petroleum Geology
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Volume | 77Pages:435-447 |
Abstract | The hydrogeochemical characteristics of aquifers in coal-bearing strata can provide an important foundation for understanding the evolution of the aquifers and recognizing the formation process and occurrence of biogenic gas. By analyzing the hydrogeochemical characteristics of water produced from the Cenozoic, the limestone, and the coal strata aquifers and the coalbed gas wells, this study focused on water-rock interactions and methanogenesis in the formation water of the Suzhou mining area, Huaibei coalfield, China. Tectonically, this is one of the most complex coalfields in China. The dissolution of evaporites, silicates, and carbonates controlled the chemical composition of the formation water. The Cenozoic aquifers have a relatively stable water quality type and balanced ionic composition, but more complex water-rock interactions occur in the coal strata and the limestone aquifers. Extensive methanogenic activity and methanogenesis could be recognized by the meteoric water recharge, positive δ13C signatures for dissolved inorganic carbon(DIC; 15.4‰–26.2‰), lower sulfate concentrations (<2 mM), and higher levels of dissolved methane and DIC. The generation and enrichment of secondary biogenic gas in the coal seams was after the microbes’ inoculation along with the freshwater infilling the fracture network. |
Keyword | Water-rock Interactions end Member Discrimination methanogenesis microbial Gas isotope Geochemistry |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/9608 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.Environmental Science and Engineering Postdoctoral Research Center, School of Earth and Environment, Anhui University of Science and Technology, 232001, Huainan, China 2.Key Lab of Computational Geodynamics of Chinese Academy of Sciences, College of Earth Science, University of Chinese Academy of Sciences, 100049, Beijing, China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002, Guiyang, China |
Recommended Citation GB/T 7714 | Qingguang Li;Yiwen Ju;Weiqi Lu;Guochang Wang;Bhupati Neupane;Yue Sun. Water-rock interaction and methanogenesis in formation water in the southeast Huaibei coalfield, China[J]. Marine and Petroleum Geology,2016,77:435-447. |
APA | Qingguang Li;Yiwen Ju;Weiqi Lu;Guochang Wang;Bhupati Neupane;Yue Sun.(2016).Water-rock interaction and methanogenesis in formation water in the southeast Huaibei coalfield, China.Marine and Petroleum Geology,77,435-447. |
MLA | Qingguang Li;Yiwen Ju;Weiqi Lu;Guochang Wang;Bhupati Neupane;Yue Sun."Water-rock interaction and methanogenesis in formation water in the southeast Huaibei coalfield, China".Marine and Petroleum Geology 77(2016):435-447. |
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