DOI: 10.1306/10171111052
Scopus记录号: 2-s2.0-84862742477
论文题名: Characterization of gas shale pore systems by porosimetry, pycnometry,surfacearea,andfield emission scanning electron microscopy/ transmission electron microscopy image analyses: Examples from the Barnett, Woodford, Haynesville, Marcellus,andDoig units
作者: Chalmers G.R. ; Bustin R.M. ; Power I.M.
刊名: AAPG Bulletin
ISSN: 0149-1764
EISSN: 1558-9494
出版年: 2012
发表日期: 2012
卷: 96, 期: 6 起始页码: 1099
结束页码: 1119
语种: 英语
Scopus关键词: British Columbia , Canada
; Field emission scanning electron microscopy
; Focused ion beam milling
; Gas shales
; Helium pycnometry
; High resolution
; Intergranular porosity
; Macropore volume
; Macropores
; Meso-pores
; Micropore volumes
; North American
; Organic geochemistry
; Pore distribution
; Pore system
; Porosimetry
; Preferred orientations
; Pycnometry
; Surface area
; Total organic carbon content
; Total porosity
; Transmission electron microscopy images
; Visual appreciations
; Vitrinite reflectance
; Aggregates
; Crystallography
; Field emission microscopes
; Helium
; Image analysis
; Kerogen
; Mineralogy
; Minerals
; Pore size
; Quartz
; Transmission electron microscopy
; Fracturing fluids
; aggregate
; image analysis
; kerogen
; mineralogy
; organic geochemistry
; pore space
; quartz
; reservoir characterization
; reservoir rock
; scanning electron microscopy
; shale
; size distribution
; surface area
; transmission electron microscopy
; British Columbia
; Canada
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The nanometer-scaled pore systems of gas shale reservoirs were investigated from the Barnett, Marcellus, Woodford, and Haynesville gas shales in the United States and the Doig Formation of northeastern British Columbia, Canada. The purpose of this article is to provide awareness of the nature and variability in pore structures within gas shales and not to provide a representative evaluation on the previously mentioned North American reservoirs. To understand the pore system of these rocks, the total porosity, pore-size distribution, surface area, organic geochemistry, mineralogy, and image analyses by electron microscopy were performed. Total porosity from helium pycnometry ranges between 2.5 and 6.6%. Total organic carbon content ranges between 0.7 and 6.8 wt. %, and vitrinite reflectance measured between 1.45 and 2.37%. The gas shales in the United States are clay and quartz rich, with the Doig Formation samples being quartz and carbonate rich and clay poor. Higher porosity samples have higher values because of a greater abundance of mesopores compared with lower porosity samples. With decreasing total porosity, micropore volumes relatively increase whereas the sum of mesopores and macropore volumes decrease. Focused ion beam milling, field emission scanning electron microscopy, and transmission electron microscopy provide high-resolution (∼5 nm) images of pore distribution and geometries. Image analysis provides a visual appreciation of pore systems in gas shale reservoirs but is not a statistically valid method to evaluate gas shale reservoirs. Macropores and mesopores are observed as either intergranular porosity or are confined to kerogen-rich aggregates and show no preferred orientation or align parallel with the laminae of the shale. Networks of mesopores are observed to connect with the larger macropores within the kerogen-rich aggregates. Copyright © 2012. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862742477&doi=10.1306%2f10171111052&partnerID=40&md5=3d8d30ffc1653055f725bab9e95352f5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13334
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:
Chalmers G.R.,Bustin R.M.,Power I.M.. Characterization of gas shale pore systems by porosimetry, pycnometry,surfacearea,andfield emission scanning electron microscopy/ transmission electron microscopy image analyses: Examples from the Barnett, Woodford, Haynesville, Marcellus,andDoig units[J]. AAPG Bulletin,2012-01-01,96(6)