Viscosity Estimation for a Polymer Solution in a Porous Medium
In order to identify the working viscosity of a polymer solution in porous media during the injection process, an oil well in the center of a typical five-spot pattern for polymer flooding in the Daqing Oilfield was chosen.By dynamically integrating sealed coring data, oil-water relative permeability curves and production data, a novel method was established to estimate the working viscosity of a polymer solution in porous media.This method provided the technical foundation for understanding the mechanism of polymer flooding and the design of polymer flooding projects.This research revealed that the working viscosity of a polymer solution in porous media was much lower than that measured in the laboratory.Because of underground shearing and adsorption, the work viscosity of a polymer solution with medium molecular weight in a porous medium near the producer was between approximately 7.5-10mPa · s.
polymer flooding sealed coring water saturation water cut underground working viscosity
Changqing Wei
Exploration and Development Research Institute of Daqing Oilfield Company Ltd., Daqing 163712, China
国内会议
青岛
英文
47-51
2013-06-26（万方平台首次上网日期，不代表论文的发表时间）