超声波频率对聚合物溶液流变性的影响

IMPACT OF FREQUENCY OF ULTRASONIC ON RHEOLOGICAL PROPERTY OF POLYMER SOLUTION

王常斌 魏淑惠 贾辉

Wang Changbin Wei Shuhui Jia Hui

大庆石油学院, 黑龙江大庆 163318

Daqing Petroleum Institute

提出了利用超声波改变聚合物溶液流变性的方法和声流变概念。通过超声波作用于聚合物溶液的室内试验,结果表明,在超声波作用下,聚合物溶液流变性将发生很大变化,变化幅值与超声波的频率有关。经超声波处理后聚合物溶液的流变性符合Carreau模式,给出了Carreau模式中参数μ∞,n,μ0,γb的确定方法,并给出了它们同频率之间的关系。通过回归分析,得出聚合物溶液视黏度与作用的超声波频率之间的经验关系式,给出了经超声波处理后聚合物溶液视黏度的预测模型。该研究结果,为改变聚合物溶液流变性提供了一种新途径。

The idea of sound rheology is put forward. By means of the ultrasonic acting polymer solution experiment finishod in the laboratory, The experiment results show that the rheological property of polymer solution can be changed by means of ultrasonic is introduced. According to experiment, the variety of rheological property of the polymer solution with the ultrasonic will be great, and the changed extent of rheological property depends upon the acting frequency. The changed rheological property conforms to the Carreau pattern. The way of making sure the parameters such as μ∞, n, μ0, γb and the relation between the parameters and the acting frequency in Carreau pattern are obtained. The empiristic formula shown the relation between the equivalent viscosity and the acting frequency is found by regressing analysis, then the forecast pattern of the equivalent viscosity of the polymer solution acted by ultrasonic.The achievement is that a new way changing rheological property of polymer solution is given, which can be served in the oilfield.

10.3969/j.issn.1000-7393.2004.01.022