Experimental research of the chemical agent concentration toward the rheological properties of ASP displacing fluids

This paper discusses the relationship between the chemical fluids concentration and the rheological properties of ASP displacing fluids, and researches into their influences on the apparent viscosity and static adsorption of displacing fluids. The result shows:with the increase of concentration of alkali, the viscosity of ASP chemical system reduces gradually, zero shear viscosity is lower, shear performance becomes bad; with the increase of concentration of surfactant, and the viscosity of ASP chemical system increases to some extent; with the increase of equilibrium concentration, the amount of adsorption of alkali and surfactant are increasing constantly, and fit the Langmuir adsorption law; the adsorption of HASWP in core sand also has peak value of adsorption capacity, however, it doesn't fit the Langmuir adsorption law.