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DOI | 10.1002/2017WR021083 |
Visualization and quantification of capillary drainage in the pore space of laminated sandstone by a porous plate method using differential imaging X-ray microtomography | |
Lin, Qingyang1; Bijeljic, Branko1; Rieke, Holger2; Blunt, Martin J.1 | |
2017-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Germany |
英文摘要 | The experimental determination of capillary pressure drainage curves at the pore scale is of vital importance for the mapping of reservoir fluid distribution. To fully characterize capillary drainage in a complex pore space, we design a differential imaging-based porous plate (DIPP) method using X-ray micro-tomography. For an exemplar mm-scale laminated sandstone microcore with a porous plate, we quantify the displacement from resolvable macropores and subresolution micropores. Nitrogen (N-2) was injected as the nonwetting phase at a constant pressure while the porous plate prevented its escape. The measured porosity and capillary pressure at the imaged saturations agree well with helium measurements and experiments on larger core samples, while providing a pore-scale explanation of the fluid distribution. We observed that the majority of the brine was displaced by N2 in macropores at low capillary pressures, followed by a further brine displacement in micropores when capillary pressure increases. Furthermore, we were able to discern that brine predominantly remained within the subresolution micropores, such as regions of fine lamination. The capillary pressure curve for pressures ranging from 0 to 1151 kPa is provided from the image analysis compares well with the conventional porous plate method for a cm-scale core but was conducted over a period of 10 days rather than up to few months with the conventional porous plate method. Overall, we demonstrate the capability of our method to provide quantitative information on two-phase saturation in heterogeneous core samples for a wide range of capillary pressures even at scales smaller than the micro-CT resolution. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411202000058 |
WOS关键词 | RESERVOIR CONDITIONS ; TRANSPORT ; PRESSURE ; ROCKS ; HETEROGENEITY ; TOMOGRAPHY ; CURVATURE ; POROSITY ; IMAGES ; 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/21498 |
专题 | 资源环境科学 |
作者单位 | 1.Imperial Coll London, Dept Earth Sci & Engn, London, England; 2.Deutsch Erdoel AG, DEA, Hamburg, Germany |
推荐引用方式 GB/T 7714 | Lin, Qingyang,Bijeljic, Branko,Rieke, Holger,et al. Visualization and quantification of capillary drainage in the pore space of laminated sandstone by a porous plate method using differential imaging X-ray microtomography[J]. WATER RESOURCES RESEARCH,2017,53(8). |
APA | Lin, Qingyang,Bijeljic, Branko,Rieke, Holger,&Blunt, Martin J..(2017).Visualization and quantification of capillary drainage in the pore space of laminated sandstone by a porous plate method using differential imaging X-ray microtomography.WATER RESOURCES RESEARCH,53(8). |
MLA | Lin, Qingyang,et al."Visualization and quantification of capillary drainage in the pore space of laminated sandstone by a porous plate method using differential imaging X-ray microtomography".WATER RESOURCES RESEARCH 53.8(2017). |
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