Rheological Study of Light Waxy Crude Oil

The study of rheological of light waxy crude oil is very important in understanding the flow and performance of the oil from the reservoir to the surface. In oil and gas industries over the world, most of the crude oils will contains wax and asphaltene which effect viscosity of the crude oil and the flow of the oil from reservoir. The objective of this study is to investigate the rheological behavior of crude oil with different composition of wax on the yield stress and viscosity. In this study, the amount of wax was measured by using wax analyzer. Fann viscometer also has been used in this study to measure the viscosity of the crude oil. The viscosity for all samples was measured at 40°C and the samples were prepared by mixing Dulang crude oil with Tapis crude oil. When amount of Dulang is reducing, the viscosity and yield point also reduce. The result shown that amount of wax contains effect the viscosity and the yield point of the samples.