Abstract
The formation of paraffin deposits is a common problem faced by oil production companies, as it complicates the production and transportation of hydrocarbons. Paraffins are a mixture of saturated hydrocarbons (alkanes) contained in oil in a dissolved or, depending on temperature, crystalline state. Paraffins in the form of crystals can be released from oil if its temperature drops below a certain value - the temperature at which paraffins begin to crystallize. The crystallization temperature of paraffins depends on the chemical composition of the oil and the molecular weight of the paraffins dissolved in it. Thermodynamic modeling plays an important role in preventing wax formation. The article analyzes modifications of temperature correlations (melting point and pour point) included in the calculations of fusion properties. Temperature correlation data is used in thermodynamic prediction models of wax precipitation.Two correlations were taken for the study: Won's (1986) correlation and Nichita's (2001) correlation, and by modifying them, new correlations were obtained that give more accurate results with the experimental data. For the experiment, 3 samples with calculated molecular weights were taken from field X. As a result, the modified correlation for determining the melting point gives an accuracy of calculation results compared to the correlation of Won (1986) by 5%. The modified correlation for determining the solid-state transition temperature gives an accuracy of the calculation results compared to the Nichita (2001) correlation by 17.5% for the X field. These results provide valuable information for the practical application of modified theoretical temperature correlations, which will make it possible to more accurately characterize the behavior of the oil mixture, increase the accuracy of calculations, and improve the predictive model of wax deposition for various oils.