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- W2080303928 abstract "In Parts 1 and 2 of this series of papers, the importance of interfacial properties in determining the stability of water-in-Buchan crude oil emulsions has been demonstrated. In this third part of the series, we report on the chemical demulsification of water-in-crude oil emulsions. Two classes of experiment were carried out; bottle tests in which emulsion resolution was followed by the appearance of a separated aqueous layer in the bottom of the tube, and microscopic examinations, where resolution was directly followed by observing coalescence of the droplets. Demulsification was achieved by adding one of the commercial demulsifiers Unidem120 and BJI8. Unidem120 is a blend of non-ionic and anionic surfactants, whereas BJ18 was specially developed for the demulsification of Buchan crude. Some of the pure constituents of these blended surfactants were also used for resolving water-in-Buchan crude oil emulsions. Two types of behaviour were observed: type I behaviour, showing constant water separation with increased demulsifier concentration, and type II, showing reduced water separation with increased demulsifier concentration. To a small extent, there exists a degree of functional specificity in the demulsifier molecules towards interaction with the constituents of the interfacial film, and to a larger extent good emulsion resolution is governed by the interfacial properties of the demulsifier blend." @default.
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- W2080303928 date "1994-03-01" @default.
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- W2080303928 title "Dewatering of crude oil emulsions 3. Emulsion resolution by chemical means" @default.
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- W2080303928 doi "https://doi.org/10.1016/0927-7757(93)02706-k" @default.
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