关键词: 化学驱, 三次采油, 取油机理, 相对渗透率曲线, 渗透率测定

Abstract:

This paper presents the conception of Darcy viscosity after the measurement of the rheo-logical property of ASP fluid flowing through porous medium and studies its relationship with the residual resistance factor (Fir3. The problem of how to determine the water phase visicosity in measuring the relative permeability curve of ASP/oil system has been trans-ferred to the study of the relationship betwwee^ Darcy viscosity and Frr as well as the appar-ent viscosity. The experimental results show that the idea advanced in this paper is an effec-tive method to measure the relative permeability curve in ASP flooding.

Key words: Chemical flooding, Tertiary oil recovery, Oil displacement mechanism iRelative permeability , Permeability determination