DOI: 10.1306/04051211097
Scopus记录号: 2-s2.0-84864530939
论文题名: The importance of the degree of cataclasis in shear bands for fluid flow in porous sandstone Provence, France
作者: Ballas G. ; Soliva R. ; Sizun J.-P. ; Benedicto A. ; Cavailhes T. ; Raynaud S.
刊名: AAPG Bulletin
ISSN: 0149-1719
EISSN: 1558-9449
出版年: 2012
发表日期: 2012
卷: 96, 期: 11 起始页码: 2167
结束页码: 2186
语种: 英语
Scopus关键词: Cataclasis
; Damage zones
; Deformation band
; Field observations
; Geologic reservoirs
; Geometrical analysis
; Grain-size distribution
; Host rocks
; Iron hydroxides
; Microscopic scale
; Microstructural deformation
; Orders of magnitude
; Permeability reduction
; Porosity reduction
; Porous sandstone
; Sandstone reservoirs
; Shear displacement
; Subsurface fluid flow
; Uncemented
; Water flows
; Deformation
; Flow of fluids
; Sandstone
; Shear bands
; Reduction
; deformation mechanism
; fluid flow
; geometry
; host rock
; membrane
; microstructure
; porosity
; porous medium
; sandstone
; sealing
; shear band
; water flow
; France
; Provence
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Determination of the membrane seal capacity of deformation bands is critical for managing geologic reservoirs in porous sandstones. In this study, we have analyzed a cataclastic shearband network developed in uncemented porous sandstone in Provence, France. Geometrical analyses of the bands show significant differences between three types of bands (single strand, multistrand, and band cluster], sorted by their number of strands, their amount of shear displacement, and their thicknesses. At the microscopic scale, the image-analysis porosities and the grain-size distributions allow definition of three different types of microstructural deformation: damage zone, protocataclastic, and cataclastic. Whereas damage zone and protocataclastic deformations are observed in each type of band, cataclastic strands are observed in clusters and, sometimes, in multistrands. Cataclastic strands are characterized by a porosity reduction of 10 to 25% and a permeability reduction of three to five orders of magnitude compared to the host rock. Field observations of iron hydroxide precipitations around the bands suggest that cataclastic strands were membrane seals to water flow under vadose condition. This study therefore highlights the importance of the degree of cataclasis in shear bands as membrane seals to subsurface fluid flows in sandstone reservoirs. Copyright ©2012. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864530939&doi=10.1306%2f04051211097&partnerID=40&md5=646233fd3d961b85d874b6ebdd54fd7b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13289
Appears in Collections: 过去全球变化的重建 科学计划与规划 全球变化的国际研究计划 影响、适应和脆弱性 气候变化与战略 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Ballas G.,Soliva R.,Sizun J.-P.,et al. The importance of the degree of cataclasis in shear bands for fluid flow in porous sandstone Provence, France[J]. AAPG Bulletin,2012-01-01,96(11)