Study on erosion wear and life prediction of double jet pump in fluid with high sand content

The erosion characteristics of high sand flow fields are essential to the durability and performance of double jet pumps in oil and gas production. Using solid–liquid two-phase flow theory and an erosion model, this study evaluated how particle size, mass flow rate, and power fluid flow rate affect the erosion of double jet pumps. The findings reveal that erosion mainly occurs on the inner wall at the throat inlet, throat outlet, and diffuser inlet. With an increase in power fluid flow rate from 11 to 15 L/s, the maximum erosion rate at the throat's inlet cone escalates by a factor of 14.2. The throat inlet's service life is estimated at 275 hours. These insights provide valuable guidance for optimizing double jet pump design and application.