Research on the Differences in the Properties of the Crude Oil between H₂O Flooding and Polymer Flooding

Abstract

The Polymer is one of the efficient ways to increase to the crude oil production rate,but this method has big impact on the properties of crude oil. We studied the differences between the Polymer flooding sample and H2O flooding sample experimentally.The adsorption method was adopted to analyze the content of resins and asphaltenes in the oil samples. By measuring the exhalation rate of the H2O, the stability of the emulsifying properties which are affected by the resins and asphaltenes were studied. Then, we measured the viscosity and the interfacial tension of the crude oil samples to further explore the differences.The results shows that the contents of resins and asphaltenes and the stability of the emulsion in the Polymer flooding oil sample are all higher than that in the H2O flooding oil sample, the interfacial tension and the viscosity of the produced water in the Polymer flooding oil sample are all lower than that in the H2O flooding oil sample.