Water-in-crude oil emulsions from the Norwegian continental shelf 10. Ageing of the interfacially active components and the influence on the emulsion stability
1995; Elsevier BV; Volume: 96; Issue: 3 Linguagem: Inglês
10.1016/0927-7757(94)03038-2
ISSN1873-4359
AutoresJohan Sjöblom, Mingyuan Li, Alfred A. Christy, Hans Petter Rønningsen,
Tópico(s)Enhanced Oil Recovery Techniques
ResumoInterfacially active fractions have been separated from North Sea crude oils and have been exposed to ageing under normal atmospheric and ultraviolet conditions. Fourier transform-infrared spectra reveal that the carbonyl peak grows markedly on account of the CC mode. At the same time the spectral region between 900 and 700 cm−1 reveals that a condensation process takes place upon ageing. The interfacial activity increases in all fractions as the ageing proceeds. For two of the crude oils this is accompanied by an increase in the water/oil emulsion stability.
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