EFFECT OF ULTRASONIC IRRADIATION TREATMENT ON RHEOLOGICAL BEHAVIOUR OF EXTRA HEAVY CRUDE OIL: A SOLUTION METHOD FOR TRANSPORTATION IMPROVEMENT
EFFECT OF ULTRASONIC IRRADIATION TREATMENT ON RHEOLOGICAL BEHAVIOUR OF EXTRA HEAVY CRUDE OIL: A SOLUTION METHOD FOR TRANSPORTATION IMPROVEMENT
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DOI：
10.1002/cjce.22676
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发表时间：
2017-01-01
影响因子：
2.1
通讯作者：
Ghanavati, Mahdi
中科院分区：
文献类型：
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作者：
Rahimi, Mohammad Amin;Ramazani, Ahmad S. A.;Ghanavati, Mahdi
稠油的高粘度特性经常给管道输送带来问题。重油与轻油混合以及超声处理是解决这一问题的可行方法。在这项研究中，首先用0、0.05、0.1和0.15 mL/mL（0、5、10和15 vol%）的轻质原油稀释超重原油样品；然后将混合物用超声波照射0、5、10、15、20 min；最后测量了不同温度水平下不同剪切速率下的黏性剪切函数。结果表明，在超声辐照10 min时，得到了稀释后的特重质原油样品的最小粘度。此外，随着温度的升高，粘度降低率随温度的升高而降低。换句话说，最大的粘度降低率发生在0.05 mL/mL （5 vol%）的轻质原油。利用实验数据，得到了常用流变模型的参数，并提出了一种新的修正幂律模型，可以同时计算剪切速率和温度的影响。
The highly viscous property of heavy oil often causes problems in its transportation in pipelines. Mixing heavy oil with light oil as well as ultrasound treatment are viable solutions to this problem. In this study, extra heavy crude oil samples were first diluted with 0, 0.05, 0.1, and 0.15 mL/mL (0, 5, 10, and 15 vol%) of a light crude oil; then the mixture was irradiated by ultrasonic waves for 0, 5, 10, 15, and 20 min; finally the viscous shear functions of all mixtures was measured at different values of shear rate at different temperature levels. The results revealed that the minimum viscosity of the diluted extra heavy crude oil samples was obtained at 10 min of ultrasonic irradiation. Moreover, the viscosity reduction rate in relation to temperature decreases as temperature increases. In other words, the maximum viscosity reduction rate occurred at 0.05 mL/mL (5 vol%) of light crude oil. Using the experimental data, the parameters of common rheological models were obtained and a new modified Power Law model was presented to calculate the effect of shear rate and temperature simultaneously.