Analysing for Flow Field of Water Displacing Oil in Microscopic Pore

Abstract

At present, most of the oil fields have already got in high water cut period. For the problem of enhancing oil recovery, the impacts of pressure gradient, the width of the runner, the height of the oil film, the interfacial tension between oil and water, and viscosity on velocity distribution and stress distribution are considered. Using the constitutional equation of generalized Newtonian fluid under the isothermal condition, the flow equation of the water is set up which can describe the flow of the water flowing in the microscopic pores. A numerical simulation for the model is carried out by using Polyflow. The results show that the more pressure gradient, the greater of the oil film height, the smaller interfacial tension between oil and water, there is the better displacement efficiency.