抄録
Oil spill response requires multiphase flow techniques in various aspects. Among them, methods for treating water-in-oil emulsion, which is often formed when oil spills on the sea surface, are very important. W/O emulsion drastically increases its viscosity and makes oil recovery operation very difficult. This paper presents friction loss reduction techniques in a pipeline flow as well as rheological behavior of the emulsion. For friction reduction, water injection and chemical surfactant injection were experimentally studied. It was found that the both methods can reduce the friction loss to a considerable extent. They were applied to practical use for oil recovery vessels.
