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多孔介质期刊
影响因子: 1.49 5年影响因子: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

多孔介质期刊

DOI: 10.1615/JPorMedia.v13.i7.10
pages 591-599

NONWETTING PHASE RESIDUAL SATURATION IN SAND PACKS

Paul Gittins
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Stefan Iglauer
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Christopher Holst Pentland
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK Shell Global Solutions International BV
Saleh Al-Mansoori
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Saif Al-Sayari
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Branko Bijeljic
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Martin J. Blunt
Department of Earth Science and Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, UK

ABSTRACT

We measure residual nonwetting phase saturation in six unconsolidated sands of different average grain sizes. We also analyze the pore structure using three-dimensional images from which topologically equivalent pore networks are extracted. The residual saturations range from 10.8% to 13.1%, which is lower than for most consolidated media. Higher porosity is associated with lower residual saturations, while there is little correlation between grain and pore shape and the degree of trapping. We also study layered packs: the residual saturations are reduced compared to comparable homogeneous systems. We discuss the results in the context of capillary trapping during carbon storage in aquifers.


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