破乳剂对含水稠油流变性的影响

Influence of Demulsifier on the Rheology of Water-content Heavy Crude Oil

含水稠油添加破乳剂后形成油水悬浮液,常规同轴圆筒旋转粘度计不能准确测试其粘度。为了研究破乳剂对含水稠油流变性的影响,利用可测试扭矩的搅拌器,测量了添加不同质量分数破乳剂、不同温度条件下油水悬浮液的扭矩,计算了其对应的粘度。研究认为:低温下破乳剂可明显降低含水稠油的粘度,改善稠油的流动特性;但高温下破乳剂对含水稠油的粘度影响不大。

Oil-water suspension is formed after demulsifier is added into water-content heavy crude oil,and its viscosity can not be accurately measured by conventional coaxial cylinder viscometer.To research the influence of demulsifier on rheology of watercontent heavy crude oil,the torque of oil-water suspension with demulsifier added and different mass fractions under the condition of different temperatures is tested by adopting torque-measurable blender,and its relative viscosity is computed.Research conclusion suggests that demulsifier at low temperature can remarkably decrease the viscosity of water-content heavy crude oil and improve its flow behavior,but demulsifier at high temperature has a scarce influence on the viscosity of water-content heavy crude oil.