期刊
PETROLEUM SCIENCE AND TECHNOLOGY
卷 32, 期 5, 页码 521-526出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10916466.2011.596886
关键词
heating temperature; prediction; viscosity; waxy crude
资金
- National Natural Science Foundation of China [51134006, 51304224]
Viscosities are important parameters for design and operation of crude pipelines. The heating temperature is the major factor affecting viscosities of waxy crude below the wax appearance temperature. Below the abnormal point, waxy crude exhibits non-Newtonian flow behavior with the viscosity dependent on the shear rate. Both of these make determination of the non-Newtonian viscosities of waxy crude a very time-consuming job. On the basis of the model for predicting non-Newtonian viscosity of waxy crudes as a function of temperature and precipitated wax, an approach to predict non-Newtonian viscosity of waxy crude heated to various temperatures has been developed only based on a few measurements. The accuracy of prediction by this approach has been verified by 468 viscosity data from the Daqing crude heated at various temperatures. The totally average relative deviation between the measured and predicted viscosity is 9.42%.
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