| DOI: | 10.1002/2015GL063354
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| 论文题名: | Nanoscale imaging of pore-scale fluid-fluid-solid contacts in sandstone |
| 作者: | Schmatz J.; Urai J.L.; Berg S.; Ott H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8802
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| EISSN: | 1944-8533
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| 出版年: | 2015
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| 卷: | 42, 期:7 | | 起始页码: | 2189
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| 结束页码: | 2195
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| 语种: | 英语
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| 英文关键词: | contact angle
; contact line
; digital rock modeling
; multiphase flow
; nanoscale
; pore scale
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| Scopus关键词: | Contact angle
; Energy dispersive X ray analysis
; Ion beams
; Ion selective electrodes
; Multiphase flow
; Nanotechnology
; Oil shale
; Quartz
; Sandstone
; Scanning electron microscopy
; X ray analysis
; Contact lines
; Mixed-wet reservoirs
; Nano scale
; Nanometer resolutions
; Phase identification
; Pore scale
; Rock models
; Three phase contacts
; Rocks
; film
; multiphase flow
; pore space
; quartz
; sandstone
; scanning electron microscopy
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| 英文摘要: | Direct observations of oil-water-rock contacts are key for improving our understanding of multiphase flow phenomena in mixed-wet reservoir rocks. In this study we imaged pore-scale fluid-fluid-solid contacts in sandstone with nanometer resolution using cryogenic broad ion-beam polishing in combination with scanning electron microscopy and phase identification by energy-dispersive X-ray analysis. We observed, as expected, the nonwetting oil phase separated from quartz surfaces by a thin brine film, but also direct contacts between oil and rock at asperities and clay aggregates, which act as pinning points and cause discontinuous motion of the oil-water-solid contact line. For the rare classical configuration of a three-phase contact the microscopic contact angle has been determined by serial sectioning. Our results call for improvements in models of multiphase pore-scale flow in digital rocks. ©2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928705827&doi=10.1002%2f2015GL063354&partnerID=40&md5=8d0466e096868510cda68d2d042c4136
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8418
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Structural Geology, Tectonics and Geomechanics, Energy and Mineral Resources Group, RWTH Aachen University, Aachen, Germany
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| Recommended Citation: | |
Schmatz J.,Urai J.L.,Berg S.,et al. Nanoscale imaging of pore-scale fluid-fluid-solid contacts in sandstone[J]. Geophysical Research Letters,2015-01-01,42(7).
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