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Factors affecting spreadability and transportation of oil in regions of frozen ground

Published online by Cambridge University Press:  27 October 2009

E.M. Chuvilin ,
N.S. Naletova ,
E.C. Miklyaeva ,
E.V. Kozlova  and
A. Instanes
E.M. Chuvilin
Affiliation:
Department of Geocryology, Faculty of Geology, Moscow State University, Vorobjovy Gory, Moscow 119899, Russia
N.S. Naletova
Affiliation:
Department of Geocryology, Faculty of Geology, Moscow State University, Vorobjovy Gory, Moscow 119899, Russia
E.C. Miklyaeva
Affiliation:
Department of Geocryology, Faculty of Geology, Moscow State University, Vorobjovy Gory, Moscow 119899, Russia
E.V. Kozlova
Affiliation:
Department of Geocryology, Faculty of Geology, Moscow State University, Vorobjovy Gory, Moscow 119899, Russia
A. Instanes
Affiliation:
Norwegian Geotechnical Institute, PO Box 3930, Ullevaal Stadion, N-0806 Oslo, Norway
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Abstract

The physical behaviour of oil interacting with soils subjected to seasonal frost or permafrost was investigated. An experimental programme was carried out to investigate the transportation and spreading of oil on a frozen surface, and transportation and accumulation of oil into freezing or frozen soils. The results show that spreading of oil at the surface at air temperatures below freezing depends on oil composition, soil temperature, and the type of mineral surface. It was observed that an ice surface has the least spreading and the greatest wetting angle of the surfaces studied. The oil penetration into frozen soils depends on soil and oil composition and temperature conditions. It was observed, as expected, that oil accumulation in frozen soils decreases with increasing ice content in the pores. However, penetration of oil components is observed even in completely ice-saturated soils. Freezing of oil-saturated soils causes a redistribution of the oil components. In sandy soils, the oil concentrates in a thawed zone in front of the freezing front; in clay soils, the oil can accumulate in the frozen zone under certain temperature conditions. A summary of the influence of various factors affecting oil behaviour in frozen and freezing soils is presented based on the experimental data and published data from other authors.

Type
Articles
Information
Polar Record , Volume 37 , Issue 202 , July 2001 , pp. 229 - 238
Copyright
Copyright © Cambridge University Press 2001

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