Abstract
The viscosity of the oil-in-water or water-in-oil depends on the water-cut (WC) present in the system. At a certain WC, the water-crude oil emulsion gives the highest viscosity, showing phase inversion, at which the performance of a centrifugal pump drops. In this article, experimental and analytical investigations have been carried out to study the performance of a centrifugal pump for the crude oil-water emulsion systems prepared by mixing crude oil obtained from an Indian oil field and water. The viscosities of the emulsions having different WC were recorded and a phase inversion point within 60%-70% WC range was obtained. During testing of the pump, emulsion samples were collected and stability of the emulsions was determined. A performance study on the centrifugal pump has been carried out using various samples of the emulsions. The study shows that the increasing WC reduces the pump performance till the phase inversion point. It has been observed that the quality crude oil and the emulsion affect the performance of the centrifugal pump. [Received: February, 15 2016; Accepted: March 28, 2016]
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