DOI: 10.1002/grl.50803
论文题名: Nanopore structures, statistically representative elementary volumes, and transport properties of chalk
作者: Yoon H. ; Dewers T.A.
刊名: Geophysical Research Letters
ISSN: 0094-8651
EISSN: 1944-8382
出版年: 2013
卷: 40, 期: 16 起始页码: 4294
结束页码: 4298
语种: 英语
英文关键词: 3DMA
; FIB-SEM
; Lattice Boltzmann Method
; nanopore
; statistical representive elementary volume
Scopus关键词: 3DMA
; Elementary volume
; FIB-SEM
; Focused ion beam-scanning electron microscopies
; Lattice Boltzmann method
; Lattice Boltzmann simulations
; Lattice-Boltzmann simulation
; Representative elementary volume
; Anisotropy
; Computational fluid dynamics
; Limestone
; Nanotechnology
; Pore structure
; Scanning electron microscopy
; Topology
; Transport properties
; Nanopores
; Cretaceous
; electron microscopy
; numerical model
; qualitative analysis
; statistical analysis
; volume
英文摘要: Dual focused ion beam-scanning electron microscopy (FIB-SEM) is frequently being used to characterize nano-scale pore structures observed in carbonate and shale gas rocks. However, applications are limited to qualitative analysis of nanopore structures. Herein, the concept of statistical representative elementary volumes (SREV) is applied to FIB-SEM data of a Cretaceous chalk sample. Lattice-Boltzmann (LB) simulations with multiple relaxation time and topological analysis show that the size of the SREV for this chalk sample can be established at ~ 10 microns based on anisotropic permeability, tortuosity, and specific surface area. This work confirms that the FIB-SEM technique can be used for the quantitative analysis of nanopore structures and highlights nano-scale basis for strong anisotropy in the presence of fractures. In addition, nanopores and pore throats are not resolved at voxel dimensions less than ~ 80 nm, resulting in significant underestimation of surface area and permeability. Key Points Quantitative analysis of FIB-SEM data of carbonate rock sample Statistically representative elementary volume for Chalk sample Lattice Boltzmann simulations and topological analysis of nano-pore structures. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881625930&doi=10.1002%2fgrl.50803&partnerID=40&md5=bf39cfe59406dfb255d7bc732f3d9841
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5915
Appears in Collections: 气候减缓与适应
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作者单位: Geomechanics Department, Sandia National Laboratories, 1515 Eubank, Albuquerque, NM 87185-0751, United States
Recommended Citation:
Yoon H.,Dewers T.A.. Nanopore structures, statistically representative elementary volumes, and transport properties of chalk[J]. Geophysical Research Letters,2013-01-01,40(16).