DOI: 10.1306/10210909074
Scopus记录号: 2-s2.0-79951541399
论文题名: Gas seepages in Germany: Revisited subsurface permeabilities in the German mining district
作者: Rudolph T. ; Melchers C. ; Minke A. ; Coldewey W.G.
刊名: AAPG Bulletin
ISSN: 0149-1933
EISSN: 1558-9663
出版年: 2010
发表日期: 2010
卷: 94, 期: 6 起始页码: 847
结束页码: 867
语种: 英语
Scopus关键词: Carboniferous coals
; Coal mining
; Drilling operation
; Fault planes
; Fault system
; Gas seepage
; Geological process
; Germany
; High probability
; Input datas
; Low permeability
; Mesozoic
; Mining district
; Modeling softwares
; Permeability distribution
; Shallow gas
; Shallow subsurface
; Subsurface model
; Tectonic structure
; Coal
; Coal industry
; Gas hazards
; Lithology
; Methane
; Wells
; Seepage
; assessment method
; Carboniferous
; coal mining
; Cretaceous
; data set
; fault
; gas seepage
; lithology
; methane
; numerical model
; permeability
; software
; subsurface flow
; tectonic structure
; well
; Germany
; North Rhine-Westphalia
; Ruhr
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The German mining district, the Ruhr area, has had a coal mining history for nearly two centuries. Even with this history, all the geological processes in the region are still not fully understood. For the coal mining, extensive exploration work was necessary, and thousands of wells were drilled. These wells targeted Carboniferous coal layers and were used to provide an understanding of its geology and tectonic structure. In the southern region, the Carboniferous pinches out at the surface. In the north, theses rocks are deeply buried under approximately 1200 m (3937 ft) of Mesozoic, mainly Cretaceous, layers. Although the Carboniferous is covered in the north, areas with methane seepages can be found. Because of regional and local changes in the lithology of the overlying Cretaceous successions, whether these gas seepages link the Carboniferous to the surface through the permeable Cretaceous has not been clear. The scope of this study was to understand the gas seepages at the surface and to identify potential pathways of a methane migration in the subsurface. Input data sets, which vary in availability and quality, include regional digital subsurface models. To improve the subsurface understanding, permeability distributions in the Cretaceous were simulated and an assessment of the known fault system was made using the modeling software Petrel. Constructing a detailed static subsurface model showed that the shallow subsurface has, in general, a high probability of low permeabilities and sealing faults. Streaks of higher permeability along the fault planes, however, could create pathways for a possible migration of methane. The methane migration and the degassing of the deeper subsurface could potentially influence further exploration activities in the region. The results could also be used to identify shallow gas hazards for drilling operations. Copyright ©2010. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951541399&doi=10.1306%2f10210909074&partnerID=40&md5=08414735f799c27220a3398daf430963
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13502
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:
Rudolph T.,Melchers C.,Minke A.,et al. Gas seepages in Germany: Revisited subsurface permeabilities in the German mining district[J]. AAPG Bulletin,2010-01-01,94(6)