关键词: 含蜡原油, 油水体系,  , 流变性, 剪切稀释性

Abstract: The rheological characteristics of high waxy oil and water system in different condition were studied, which provided theoretical support for produced fluid of high pourpoint oil gathering and transferring. Oilwater viscosity distribution characteristics were measured under different conditions with VT550 viscometer. Effection of temperature and water cut on thixotropic and dilution shearing characteristics was obtained. Oil and water distribution with different water cut was observation using CCDADAPTER micro meter. The results show that the higher the temperature, the smaller the yield stress. With the temperature increasing, the dropping speed of yield stress becomes smaller. When water cut of the oil/water system is high, the apparent viscosity is still low even the temperature is below freezing point. The more close to the freezing point temperature, the more close to the phase inversion point moisture content, the more obvious shear thinning characteristic, the stronger the nonNewtonian fluid properties are. When the water cut is near the phase inversion point, water phase is distributed in the oil phase with uniform and dense form, which leads to the huge apparent viscosity.

Key words: Waxy crude,    ,  Oil and water system,     ,  Rheological property,   , Shear thinning behavior