Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021736 |
X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method | |
Gao, Ying1,2; Lin, Qingyang1; Bijeljic, Branko1,2; Blunt, Martin J.1,2 | |
2017-12-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | We imaged the steady state flow of brine and decane in Bentheimer sandstone. We devised an experimental method based on differential imaging to examine how flow rate impacts impact the pore-scale distribution of fluids during coinjection. This allows us to elucidate flow regimes (connected, or breakup of the nonwetting phase pathways) for a range of fractional flows at two capillary numbers, Ca, namely 3.0 x 10(-7) and 7.5 x 10(-6). At the lower Ca, for a fixed fractional flow, the two phases appear to flow in connected unchanging subnetworks of the pore space, consistent with conventional theory. At the higher Ca, we observed that a significant fraction of the pore space contained sometimes oil and sometimes brine during the 1 h scan: this intermittent occupancy, which was interpreted as regions of the pore space that contained both fluid phases for some time, is necessary to explain the flow and dynamic connectivity of the oil phase; pathways of always oil-filled portions of the void space did not span the core. This phase was segmented from the differential image between the 30 wt % KI brine image and the scans taken at each fractional flow. Using the grey scale histogram distribution of the raw images, the oil proportion in the intermittent phase was calculated. The pressure drops at each fractional flow at low and high flow rates were measured by high-precision differential pressure sensors. The relative permeabilities and fractional flow obtained by our experiment at the mm-scale compare well with data from the literature on cm-scale samples. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423299000017 |
WOS关键词 | PORE-SCALE ; RELATIVE PERMEABILITY ; 2-PHASE FLOW ; TRANSPORT ; DYNAMICS ; TENSION ; MEDIA ; CO2 |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21571 |
专题 | 资源环境科学 |
作者单位 | 1.Imperial Coll London, Dept Earth Sci & Engn, London, England; 2.Imperial Coll London, Dept Earth Sci & Engn, Qatar Carbonates & Carbon Storage Res Ctr, London, England |
推荐引用方式 GB/T 7714 | Gao, Ying,Lin, Qingyang,Bijeljic, Branko,et al. X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method[J]. WATER RESOURCES RESEARCH,2017,53(12). |
APA | Gao, Ying,Lin, Qingyang,Bijeljic, Branko,&Blunt, Martin J..(2017).X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method.WATER RESOURCES RESEARCH,53(12). |
MLA | Gao, Ying,et al."X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method".WATER RESOURCES RESEARCH 53.12(2017). |
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