DOI: 10.1306/10221414014
Scopus记录号: 2-s2.0-84930079114
论文题名: From Shale oil to biogenic Shale gas: Retracing organicinorganic interactions in the Alum Shale (furongian-lower Ordovician) in southern Sweden
作者: Schulz H.-M. ; Biermann S. ; Van Berk W. ; Krüger M. ; Straaten N. ; Bechtel A. ; Wirth R. ; Lüders V. ; Schovsbo N.H. ; Crabtree S.
刊名: AAPG Bulletin
ISSN: 0149-1472
EISSN: 1558-9202
出版年: 2015
发表日期: 2015
卷: 99, 期: 5 起始页码: 927
结束页码: 956
语种: 英语
Scopus关键词: Bituminous materials
; Carbon
; Gases
; Hydrocarbons
; Methane
; Oil shale
; Organic carbon
; Shale
; Shale gas
; Substrates
; Aqueous environment
; Hydrogeochemical model
; Inorganic reactions
; Magmatic intrusions
; Mineralogical compositions
; Organic-inorganic interactions
; Total dissolved solids
; Total Organic Carbon
; Shale oil
; biodegradation
; biogenic emission
; biomineralization
; bitumen
; Carboniferous
; methane
; microbial activity
; organic geochemistry
; Permian
; shale
; total organic carbon
; Michigan Basin
; Sweden
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Methane-rich gas occurs in the total organic carbon-rich Alum Shale (Furongian to Lower Ordovician) in southern Sweden. The lower part of the thermally immature Alum Shale was impregnated by bitumen locally generated by heating from magmatic intrusions from the Carboniferous to the Permian. Organic geochemical data indicate that the migrated bitumen is slightly degraded. In the upper Alum Shale, where methane is the main hydrocarbon in thermovaporization experiments, centimeter-size calcite crystals occur that contain fluid inclusions filled with oil, gas, or water. The Alum Shale is thus considered a mixed shale oil-biogenic shale gas play. The presented working hypothesis to explain the biogenic methane occurrence considers that water-soluble bitumen components of the Alum Shale were converted to methane. A hydrogeochemical modeling approach allows the quantitative retracing of inorganic reactions triggered by oil degradation. The modeling results reproduce the present-day gas and mineralogical composition. The conceptual model applied to explain the methane occurrence in the Alum Shale in southern Sweden resembles the formation of biogenic methane in the Antrim Shale (Michigan Basin, United States). In both models, melting water after the Pleistocene glaciafion and modern meteoric water may have diluted the contents of total dissolved solids (TDS) in basinal brines. Such pore waters with low TDS contents create a subsurface aqueous environment favorable for microbes that have the potential to form biogenic methane. Today, biogenic methane production rates, with shale as the substrate using different hydrocarbon-degrading microbial enrichment cultures in incubation experiments, range from 10 to 620 nmol per gram and per day. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930079114&doi=10.1306%2f10221414014&partnerID=40&md5=0d35e4f92eddadf86d14596aebf00e96
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13043
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:
Schulz H.-M.,Biermann S.,Van Berk W.,et al. From Shale oil to biogenic Shale gas: Retracing organicinorganic interactions in the Alum Shale (furongian-lower Ordovician) in southern Sweden[J]. AAPG Bulletin,2015-01-01,99(5)