Abstract
pecially during the production, transportation and refining of crude oil. This problem is related to changes in temperature and pressure, crude oil composition, and flow conditions. Research in the petroleum industry is actively focused on developing improved models and correlations to accurately predict wax deposition. The authors of the paper consider approaches based on thermodynamic principles to develop a model capable of predicting the conditions under which wax deposition occurs. The model takes into account the chemical and physical interactions in the system, and also includes parameters determined from laboratory experiments and data on the characteristics of crude oil. This article presents an analysis of scientific research literature and publications on calculation methods for predicting paraffin precipitation, and a comparative analysis of existing current correlations is carried out. Also shown is the calculation of the critical parameters (PVT) from the obtained data, which is the first step towards a model for calculating the precipitated wax.