| DOI: | 10.1306/02141312091
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| Scopus记录号: | 2-s2.0-84883586419
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| 论文题名: | Mechanisms of shale gas storage: Implications for shale gas exploration in China |
| 作者: | Hao F.; Zou H.; Lu Y.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1661
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| EISSN: | 1558-9391
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| 出版年: | 2013
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| 发表日期: | 2013
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| 卷: | 97, 期:8 | | 起始页码: | 1325
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| 结束页码: | 1346
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| 语种: | 英语
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| Scopus关键词: | Elevated temperature and pressure
; Geologic conditions
; In-laboratory experiments
; Increasing temperatures
; Organic matter richness
; Sorption capacities
; Temperature and pressures
; Total organic carbon content
; Biogeochemistry
; Biological materials
; Gases
; Geological surveys
; Hydrostatic pressure
; Organic compounds
; Petroleum prospecting
; Sorption
; Temperature
; Shale
; clay
; gas production
; gas storage
; hydrostatic pressure
; moisture content
; organic matter
; pressure gradient
; shale
; sorption
; total organic carbon
; uplift
; China
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | This article reviews the mechanisms of shale gas storage and discusses the major risks or uncertainties for shale gas exploration in China. At a given temperature and pressure, the gas sorption capacities of organic-rich shales are primarily controlled by the organic matter richness but may be significantly influenced by the type and maturity of the organic matter, mineral composition (especially clay content), moisture content, pore volume and structure, resulting in different ratios of gas sorption capacity (GSC) to total organic carbon content for different shales. In laboratory experiments, the GSC of organicrich shales increases with increasing pressure and decreases with increasing temperature. Under geologic conditions (assuming hydrostatic pressure gradient and constant thermal gradient), the GSC increases initially with depth due to the predominating effect of pressure, passes through a maximum, and then decreases because of the influence of increasing temperature at greater depth. This pattern of variation is quite similar to that observed for coals and is of great significance for understanding the changes in GSC of organic-rich shales over geologic time as a function of burial history. At an elevated temperature and pressure and with the presence of moisture, the gas sorption capacities of organic-rich shales are quite low. As a result, adsorption alone cannot protect sufficient gas for highmaturity organic-rich shales to be commercial gas reservoirs. Two models are proposed to predict the variation of GSC and total gas content over geologic time as a function of burial history. High contents of free gas in organic-rich shales can be preserved in relatively closed systems. Loss of free gas during postgeneration uplift and erosion may result in undersaturation (the total gas contents lower than the sorption capacity) and is the major risk for gas exploration in marine organicrich shales in China. Copyright © 2013. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883586419&doi=10.1306%2f02141312091&partnerID=40&md5=c3c1591d06adae34ef761913324bdacf
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13231
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Hao F.,Zou H.,Lu Y.. Mechanisms of shale gas storage: Implications for shale gas exploration in China[J]. AAPG Bulletin,2013-01-01,97(8)
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