| DOI: | 10.1002/2015GL064007
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| 论文题名: | From connected pathway flow to ganglion dynamics |
| 作者: | Rücker M.; Berg S.; Armstrong R.T.; Georgiadis A.; Ott H.; Schwing A.; Neiteler R.; Brussee N.; Makurat A.; Leu L.; Wolf M.; Khan F.; Enzmann F.; Kersten M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9607
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| EISSN: | 1944-9338
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| 出版年: | 2015
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| 卷: | 42, 期:10 | | 起始页码: | 3888
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| 结束页码: | 3894
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| 语种: | 英语
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| 英文关键词: | flow regime
; ganglion dynamics
; imbibition
; micro-CT
; multiphase flow
; tomography
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| Scopus关键词: | Dynamics
; Mass transfer
; Multiphase flow
; Tomography
; Breakup and coalescences
; Dynamic transients
; Flow regimes
; Ganglion dynamics
; Imbibition
; Micro CT
; Phase connectivities
; X-ray computed microtomography
; Computerized tomography
; coalescence
; Darcy law
; imbibition
; mass transfer
; multiphase flow
; porewater
; sandstone
; tomography
; X-ray spectroscopy
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| 英文摘要: | During imbibition, initially connected oil is displaced until it is trapped as immobile clusters. While initial and final states have been well described before, here we image the dynamic transient process in a sandstone rock using fast synchrotron-based X-ray computed microtomography. Wetting film swelling and subsequent snap off, at unusually high saturation, decreases nonwetting phase connectivity, which leads to nonwetting phase fragmentation into mobile ganglia, i.e., ganglion dynamics regime. We find that in addition to pressure-driven connected pathway flow, mass transfer in the oil phase also occurs by a sequence of correlated breakup and coalescence processes. For example, meniscus oscillations caused by snap-off events trigger coalescence of adjacent clusters. The ganglion dynamics occurs at the length scale of oil clusters and thus represents an intermediate flow regime between pore and Darcy scale that is so far dismissed in most upscaling attempts. ©2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931565706&doi=10.1002%2f2015GL064007&partnerID=40&md5=ec4b9cf481e842105141a02617e04e7d
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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/9222
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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: | Shell Global Solutions International B.V., Rijswijk, Netherlands
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| Recommended Citation: | |
Rücker M.,Berg S.,Armstrong R.T.,et al. From connected pathway flow to ganglion dynamics[J]. Geophysical Research Letters,2015-01-01,42(10).
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