Influence of Heavy Components on the Heavy Oil Emulsion Stability

doi:10.11885/j.issn.1674-5086.2013.07.03.02

Abstract

Abstract:

The heavy components of heavy oil have a great influence on the stability of emulsion. In this paper，taking heavy
oil of a Xinjiang reservoir as an example，we assayed its basic properties such as density，viscosity，solidifyig point and acid
value. After separated heavy oil into saturates aromatics，resins and asphaltenes by polarity separation，we tested the basic
properties and element content of the four components，Asphaltenes can stabilize the interfacial film of emulsion，and the water
extraction is at the minimum and stability of emulsion is at maximum when the asphaltene content is 0.5% and resin content
is 4.0%. The small amplitude oscillation experiment tests on simulation oil emulsion interfacial rheological behavior revealed
that in the resin/asphaltene model oil emulsion，complex modulus（E∗）increases first increased and then decreased with the
passage of time. When the asphaltene content is 0.5%，the resin content is 4.0%，after 2 000 s the complex modulus（E∗）is at
the maximum and the emulsion is stable.

Key words: resin, asphaltene, stability, emulsion

Lai Nanjun1，2, Peng Qin1, Ye Zhongbin1，2, Song Xiaohui1, Wen Yiping1. Influence of Heavy Components on the Heavy Oil Emulsion Stability[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.07.03.02.

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