Abstract
The article presents the results of studies of the industrial hyperbranched polymer Boltorn W300 on the values of the dynamic viscosity of oil from Yakut fields in various concentrations and in different temperature ranges from 5 to 25 ° C in increments of 5 ° C, which can positively influence the processes of pipeline transportation of oils in conditions of complex rheological parameters of pipeline operation networks. A preliminary analysis of oil for physical and chemical properties was carried out and the rheological characteristics of the base oil were studied. It has been established that, according to the results of structural group analysis, the chemical composition of the oil is paraffinic. Using a rotational viscometer, the dynamic viscosity of the shear rate of an oil system containing an additive component in concentrations of 10, 30, 50, 80 and 100 ppm. It was revealed that the effectiveness of the hyperbranched polymer Boltorn W300 is observed only at low temperatures (below 10 0C); an increase in the effectiveness of the hyperbranched polymer Boltorn W300 from an increase in the concentration of the polymer additive in the oil system was also revealed. The most effective additive concentration in this study is 100 ppm, where the viscosity index is reduced by 40,7 %. The greatest effectiveness of the hyperbranched polymer Boltorn W300 in reducing dynamic viscosity and improving rheological properties is observed in the region of low shear rates - up to 3 s-1, which can be preliminarily assessed as a positive quality for use on pipelines for pumping oil media during the pipeline commissioning period, at which low shear rates are observed. shear rates and low oil flow rates.
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