Chemical destabilization of crude oil based emulsions and asphaltene stabilized emulsions |
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Authors: | J Djuve X Yang I J Fjellanger J Sjöblom E Pelizzetti |
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Institution: | (1) Department of Chemistry University of Bergen Allegt. 41, 5007 Bergen, Norway e-mail: jostein.djuve@kj.uib.no, NO;(2) Statoil A/S, R & D Centre Rotvoll, N-7005 Trondheim, Norway e-mail: johsj@statoil.com, NO;(3) Dipartimento di Chimica Analitica Università degli Studi di Torino via P.Giuria 5-10125 Torino, Italy e-mail: pelizzet@ch.unito.itl, IT |
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Abstract: | A comparison of low and high molecular weight demulsifiers and their effect on both crude oil and asphaltene based water-in-oil
emulsions is performed. Physical characteristics are given for crudes and for the chemicals. These parameters were then correlated
with the demulsifier performance. Results indicate that a significant lowering of interfacial tension is required, but not
sufficient for an efficient demulsification. Addition of the chemicals directly to the oil phase prior to emulsification,
i.e., as inhibitors, increased the performance of the chemicals significantly.
Received: 3 May 2000 Accepted: 10 July 2000 |
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Keywords: | Demulsifier Crude oil emulsions Interfacial tension Inhibitor Administration of chemicals |
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