Evaluation of Thixotropic Models of Waxy Crude
Thixotropy,which is an important rheological behavior of waxy crudes,is very important to the hydraulic characteristics and safety of the restart process of crude oil pipelines.Thixotropic behaviors of four waxy crudes were studied experimentally under three kinds of loading conditions,which were constant shear rate,stepwise increase of shear rate and cyclic change of shear rate,namely hysteresis loop.Eight thixotropic models were evaluated by least-square regressions based on experimental data.The average absolute deviation was taken as the measurement of fitness of a model.It is concluded that the model,which was established on the basis of Houska model and Chengs idea that wax crude oil contains both complete and partial reversibility structures,is the most suitable model to describe the thixotropy of wax crude oil.
waxy crude thixotropy thixotropic models evaluation
Guo Li-ping Wang Lei Zhang Yi-min
Petroleum Engineering Faculty, Northeast Petroleum University, Daqing Heilongjiang, 163318, China
国际会议
昆明
英文
85-88
2012-10-12（万方平台首次上网日期，不代表论文的发表时间）