影响原油粘度因素的试验研究

STUDY ON INFLUENCING FACTORS TO VISCOSITY OF CRUDE DIL

应用高温高压流变仪,对塔河油田原油进行了试验研究,测量了不同含水率、不同气油比下的原油粘度,探讨了原油及油气水混合物粘度与温度、压力之间的关系,结果表明油气水混合物的粘温特性近似符合指数规律,原油粘度与压力呈线形关系,且随气油比变化剧烈,含有溶解气的原油粘度随压力变化存在极小值(泡点压力),原油粘度与含水率存在极大值(非乳化拐点),研究结果可为油田开发方案设计及油气集输提供理论指导。

Under the conditions of different temperature and pressure,we measured the viscosity of the crude oil of Tahe oil field and its mixture that the watercut and gas content are different with hightemperature and highpressure viscosimeter.The relationship between the viscosity of the crude oil and its mixture and the temperature or the pressure was also discussed.It has been indicated that the viscosity and temperature character fit to exponential law,the viscosity is linear transformation with the pressure.The gas content strongly influences the viscosity of the crude oil.The viscosity of the gas oil has a minimal value varying with the pressure,and the viscosity of the waterbearing oil has a maximal value varying with the watercut.