OFP黏弹性液体对水膜输送的影响

OFP Viscoelastic Fluid Effects on Water Film Transport

超稠油水膜面减阻输送技术是能源领域的一项节能技术。OFP黏弹性液体在超稠油水膜输送过程中起支撑作用,即产生法向应力使水膜能够稳定地存在于管道中从而不产生偏心现象。通过实验深入了解黏弹性液体的法向应力差的变化,研究了OFP黏弹性液体的剪切频率对水膜输送的影响。随着油品剪切速率的减小,溶液的溶解度、黏度、法向应力差均逐渐降低。

Water film lubricated transport of super heavy oil is one of the energy-saving technologies in the energy sector. In water film transport of super heavy oil, OFP produces a normal-stress to make the water film stay steadily and no eccentrically phenomenon in the pipeline and plays a supporting role. To understand the change of the normal-stress of OFP in-depth in water film transport of super heavy oil, the effects of OFP to the stability of water film was analyzed through our experiments. The OFP is a viscoelastic liquid as the shear rate decreases and the solubility of OFP reduces gradually, and the normal-stress difference also reduces gradually.