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Analytic analysis for oil recovery during counter-current imbibition in strongly water-wet systems
Dept. of Earth Science/Engineering, Imperial College, London, United Kingdom.
2005 (English)In: Transport in Porous Media, ISSN 0169-3913, E-ISSN 1573-1634, Vol. 58, no 1-2, 173-189 p.Article in journal (Refereed) Published
Abstract [en]

We study counter-current imbibition, where a strongly wetting phase ( water) displaces non-wetting phase spontaneously under the influence of capillary forces such that the non-wetting phase moves in the opposite direction to the water. We use an approximate analytical approach to derive an expression for saturation profile when the viscosity of the non-wetting phase is non-negligible. This makes the approach applicable to water flooding in hydrocarbon reservoirs, or the displacement of non-aqueous phase liquid (NAPL) by water. We find the recovery of non-wetting phase as a function of time for one-dimensional flow. We compare our predictions with experimental results in the literature. Our formulation reproduces experimental data accurately and is superior to previously proposed empirical models.

Place, publisher, year, edition, pages
2005. Vol. 58, no 1-2, 173-189 p.
Keyword [en]
imbibition, counter current flow, fractured reservoirs
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-87282DOI: 10.1007/s11242-004-5474-4ISI: 000226900100009OAI: oai:DiVA.org:kth-87282DiVA: diva2:501583
Note
QC 20120229Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2017-12-07Bibliographically approved

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