油包水乳状液物性影响因素实验研究

Experimental Study on the Factors Influencing the Physical Properties of Water-in-Oil Emulsion

为了使原油乳状液安全经济管输,必须保证掺水的温度不能太低同时尽可能降低原油乳状液的黏度以减小管输摩阻损失。掺水温度和掺水比是影响掺水系统能耗的两个重要因素。实验测试并分析了两种胜利油田原油乳状液在不同含水率条件下的凝点,黏度及黏温曲线变化规律。实验结果表明,在含水率小于50%的条件下,随着含水率与温度的增大两种原油乳状液的黏度都有所上升,但在含水率超过50%后,渤三原油乳状液的黏度开始出现下降趋势。同时两种原油乳状液的凝点也随着含水率的升高逐步增大。结合现场调研与分析计算得出当两种原油乳状液的含水率为30%时,可以有效地满足输送要求且使掺水系统的能耗费用降到最低,与之前的历史数据比较,综合能耗费用降低约17%。

.In order to keep the safe and economic transportation of crude oil emulsions in pipeline,it must be ensured that the temperature of the water blending cannot be too low and the viscosity of the crude oil emulsions should be reduced as much as possible to reduce the friction loss.Both mixing temperature and mixing ratio are two important factors that affect the energy consumption of water mixing system.The curves of pour point,viscosity and viscosity temperature of two kinds of Shengli Oilfield crude oil emulsions were tested and analyzed.The results show that the crude oil emulsions formed by different components of crude oil have different physical property changes.Under the condition that the water content is less than 50%,the viscosity of both crude oil emulsions increases with the increase of the water content and temperature,but after the water content exceeds 50%,the viscosity of the Bosan oil emulsion begins to decrease,and the freezing point of the two crude oil emulsions also gradually increases as the water content increases.Combined with field investigation,it is calculated that when the water content of the two crude oil emulsions is 30%,it can effectively meet transportation requirements and minimize energy cost of the water mixing system.Compared with the previous historical data,the overall energy consumption cost is reduced by about 17%.