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Advances in oil-soluble viscosity reducers for viscous crude oil

Fengying Zhang

Abstract

In this paper the article analyzes the mechanisms of the viscosity reduction by oil-soluble viscosity reducers.The viscosity reducers are classified and its monomers are introduced.The advances in oil-soluble viscosity reducers for viscous crude oil at home and abroad are reviewed.The application of overseas viscosity reducers in China is expatiated.The article discusses the possible problems in the research and development and the developing direction of oil-soluble viscosity reducers in the future.The analysis indicates that a notable characteristic of viscosity reducers is to induct side chain with polarity group and active surface on the original ester molecule matrix.

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Key concepts: Viscosity, Oil viscosity, Crude oil, Viscosity index, Petroleum engineering, Enhanced oil recovery, Chemical engineering, Monomer