The formation of wax deposits in oil wells is one of the most costly problems for oil production companies. The most common method of removing deposits is mechanical removal with a scraper. However, there is still no understanding of the critical conditions for wax removal. As part of this work, the authors consider the process of mechanical removal of wax from a high water cut oil well. The work carried out studies to assess the influence of the aqueous phase on the intensity of wax formation and simulated the thickness of wax deposits during the period of their removal under field conditions. It was found that the aqueous phase is actively included in the volume of deposits, increasing the rate of wax formation and their density. Based on the modeling, it was concluded that in wells with a low inclination, the critical thickness of wax deposits is 0.18 mm. The effect of water cut in production on the critical wax thickness has not been found, while with increasing well flow rate the critical thickness decreases. The work performed is extremely useful for understanding the process of mechanical removal of wax deposits from oil production wells producing water-cut oil.