STABILITY OF WATER-IN-CRUDE OIL EMULSIONS: ROLE PLAYED BY THE STATE OF SOLVATION OF ASPHALTENES AND BY WAXES

O. Mouraille Department of Chemistry, University of Bergen, Allégt 41, Bergen, N-5007, Norway

T. Skodvin Department of Chemistry, University of Bergen, Allégt 41, Bergen, N-5007, Norway

J. Sjöblom Department of Chemistry, University of Bergen, Allégt 41, Bergen, N-5007, Norway

J.-L Peytavy Elf Exploration Production, Lacq, F-64000, FRANCE

Abstract

The stability of water-in-crude oil (or model crude oil) emulsions was determined by means of separation/sedimentation tests and high voltage destabilization tests. First the impact of the state of solvation of asphaltencs on their ability to stabilize emulsions were studied. Secondly, we analyzed the role of naturally occurring waxes in the stabilization of emulsions. Finally, the emulsion stability when both asphaltenes and waxes are involved was investigated.

Notes

Present affiliation: Elf Exploration Production, F-64000 Lacq, FRANCE

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A critical review of development and demulsification mechanisms of crude oil emulsion in the petroleum industry

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STABILITY OF WATER-IN-CRUDE OIL EMULSIONS: ROLE PLAYED BY THE STATE OF SOLVATION OF ASPHALTENES AND BY WAXES

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