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The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China

文献类型：期刊论文

作者Guo, Huijuan1,2; Jia, Wanglu1; Peng, Ping'an1; Lei, Yuhong3; Luo, Xiaorong3; Cheng, Ming3; Wang, Xiangzeng4; Zhang, Lixia4; Jiang, Chengfu4
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2014-11-01
卷号57页码:509-520
关键词Yanchang shales Methane sorption Residual bitumen Clay minerals Ordos Basin
ISSN号0264-8172
DOI10.1016/j.marpetgeo.2014.05.010
文献子类Article
英文摘要The organic geochemistry, mineralogy and methane sorption of lacustrine shales of the Upper Triassic Yanchang Formation, collected from the south-eastern Ordos Basin, were investigated to characterize them and clarify the effects of shale composition on their sorbed gas capacity. These Yanchang shales have recently been selected as a target area for shale gas exploration in typical terrestrial strata in China. The two main sections of these shales containing type II organic matters, Chang 7 and Chang 9, have relatively high total organic carbon content (TOC) of 2-10%. The two shales also have similar mineralogies, mainly comprising quartz, clay minerals and feldspars. Both the Chang 7 and Chang 9 shales are generally in the oil window; Chang 9 is slightly more mature than Chang 7. Higher methane sorption capacity was observed for Chang 9 than for Chang 7 shales, determined on a dried basis at 50 degrees C. Methane sorption measurements were further performed on three samples from which the residual bitumen had been extracted, and their corresponding kerogen fractions, to gain insight into the effects of shale composition on methane sorption. This was significantly higher in solvent-extracted samples than in raw samples, indicating that residual bitumen largely restricts methane sorption on such shales. A positive correlation between the amount of clay minerals and methane sorption capacity of bulk rocks was evident, suggesting that clay mineral content is relevant to methane sorption. This result was also supported by the much higher methane sorption capacity of solvent-extracted shales compared to the extracted kerogen from those shales, when measured sorption data was normalized to TOC values. The effects of both residual bitumen and clay mineral on the methane sorption of bulk rocks have complicated the evaluation of methane sorption on organic matter in these mature shales. (C) 2014 Elsevier Ltd. All rights reserved.
WOS关键词NORTHEASTERN BRITISH-COLUMBIA ; MISSISSIPPIAN BARNETT SHALE ; FORT-WORTH BASIN ; CRETACEOUS GAS SHALES ; NORTH-CENTRAL TEXAS ; ORGANIC-MATTER TYPE ; PETROLEUM EXPULSION ; OIL-FIELD ; GEOLOGICAL CONTROLS ; SEDIMENTARY BASIN
WOS研究方向Geology
语种英语
WOS记录号WOS:000342530100033
出版者ELSEVIER SCI LTD
资助机构State "973" Project(2012CB214704) ; State "973" Project(2012CB214704) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; State "973" Project(2012CB214704) ; State "973" Project(2012CB214704) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; State "973" Project(2012CB214704) ; State "973" Project(2012CB214704) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; State "973" Project(2012CB214704) ; State "973" Project(2012CB214704) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200) ; Strategic Priority Research Programs (Category B) of Chinese Academy of Sciences(XDB10010200)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85894]  
专题中国科学院地质与地球物理研究所
通讯作者Jia, Wanglu
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Shaanxi Yanchang Petr Corp Co Ltd, Xian 710075, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Huijuan,Jia, Wanglu,Peng, Ping'an,et al. The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China[J]. MARINE AND PETROLEUM GEOLOGY,2014,57:509-520.
APA Guo, Huijuan.,Jia, Wanglu.,Peng, Ping'an.,Lei, Yuhong.,Luo, Xiaorong.,...&Jiang, Chengfu.(2014).The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China.MARINE AND PETROLEUM GEOLOGY,57,509-520.
MLA Guo, Huijuan,et al."The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China".MARINE AND PETROLEUM GEOLOGY 57(2014):509-520.

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来源：地质与地球物理研究所

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